XMLSig Class

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The XMLSig class is used to sign XML and verify signed XML.

Syntax

class ipworksencrypt.XMLSig

Remarks

The XMLSig component provides an easy to use API for signing and verifying signed XML. The sign method will create signed XML with an enveloped signature. The verify_signature method will attempt to verify the signature(s) within a XML document.

Sign

Before calling sign specify the XML to sign by setting input_file, or input_xml.

The references property must be set. At least one reference must be set. A reference defines the XML element to sign, and the options that specify how it is transformed and hashed during the signing process.

Set certificate to a certificate with private key.

Optionally set the canonicalization_method. This determines how the signature itself is canonicalized. signing_algorithm defines the algorithm used to sign. The signature_xpath property may be set to specify the location in the XML document where the signature will be placed.

Lastly, call sign to sign the XML.

The following properties are applicable when calling this method:

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

Verify a Signature

When verify_signature is called, the class will scan the XML document and fire the on_signature_info event for each signature that is found. When the on_signature_info event fires the references collection will be populated.

Within the on_signature_info event the reference_xml_element property must be set to the location of the XML element to which the signature applies. The reference_uri property may contain data helpful to locating the XML element.

The reference_xml_element property specifies the XPath to the element. For instance:

/root/myElement XPath syntax
/root/[1] XPath syntax using an index
/root/ns:myElement XPath syntax where the element has a namespace
myElement Just the element name
@id=myid Attribute selector: This will select an element with an attribute "id" whose value is "myid".
/root/myElement[1]/ns:name2[@attr=attrValue] XPath syntax using an index and attribute selector

The signature is verified either using a key parsed from the signed XML, or using the certificate specified by the signer_cert property. The class will automatically parse the signer certificate (if present) from the signed XML and populate the signer_cert property with the parsed value.

When on_signature_info fires, if the SignerCertParsed parameter is True the signer_cert property may be inspected to see the details of the parsed certificate. If SignerCertParsed is False, then the signer_cert property must be set to a valid certificate for signature verification to proceed.

When the on_signature_info event finishes firing, the certificate present in the signer_cert property will be used to verify the signature, whether this is the certificate automatically parsed by the class or a different certificate specified within the event.

If the signature was successfully verified the method will return without error. If the signature was not verified the method fails with an error.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.

canonicalization_methodThe canonicalization method applied to the signature.
cert_effective_dateThe date on which this certificate becomes valid.
cert_expiration_dateThe date on which the certificate expires.
cert_extended_key_usageA comma-delimited list of extended key usage identifiers.
cert_fingerprintThe hex-encoded, 16-byte MD5 fingerprint of the certificate.
cert_fingerprint_sha1The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
cert_fingerprint_sha256The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
cert_issuerThe issuer of the certificate.
cert_private_keyThe private key of the certificate (if available).
cert_private_key_availableWhether a PrivateKey is available for the selected certificate.
cert_private_key_containerThe name of the PrivateKey container for the certificate (if available).
cert_public_keyThe public key of the certificate.
cert_public_key_algorithmThe textual description of the certificate's public key algorithm.
cert_public_key_lengthThe length of the certificate's public key (in bits).
cert_serial_numberThe serial number of the certificate encoded as a string.
cert_signature_algorithmThe text description of the certificate's signature algorithm.
cert_storeThe name of the certificate store for the client certificate.
cert_store_passwordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
cert_store_typeThe type of certificate store for this certificate.
cert_subject_alt_namesComma-separated lists of alternative subject names for the certificate.
cert_thumbprint_md5The MD5 hash of the certificate.
cert_thumbprint_sha1The SHA-1 hash of the certificate.
cert_thumbprint_sha256The SHA-256 hash of the certificate.
cert_usageThe text description of UsageFlags .
cert_usage_flagsThe flags that show intended use for the certificate.
cert_versionThe certificate's version number.
cert_subjectThe subject of the certificate used for client authentication.
cert_encodedThe certificate (PEM/Base64 encoded).
hmac_keyThe HMAC key used with the 'HMAC-SHA1' signing algorithm.
input_fileThe XML file to process.
input_xmlThe XML to process.
output_fileThe output file.
output_xmlThe output XML after processing.
overwriteIndicates whether or not the class should overwrite files.
reference_countThe number of records in the Reference arrays.
reference_hash_algorithmThis property defines the hash algorithm to apply to the element specified by XMLElement .
reference_hash_valueThis property holds the calculated hash value for the specified XMLElement .
reference_transform_algorithmsThis property specifies a comma separated list of canonicalization algorithms to be applied to XMLElement .
reference_uriThis property is the URI of the reference.
reference_xml_elementThis property specifies XML element to sign or verify using XPath notation.
signature_xpathThe XPath of the signature.
signer_cert_effective_dateThe date on which this certificate becomes valid.
signer_cert_expiration_dateThe date on which the certificate expires.
signer_cert_extended_key_usageA comma-delimited list of extended key usage identifiers.
signer_cert_fingerprintThe hex-encoded, 16-byte MD5 fingerprint of the certificate.
signer_cert_fingerprint_sha1The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.
signer_cert_fingerprint_sha256The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.
signer_cert_issuerThe issuer of the certificate.
signer_cert_private_keyThe private key of the certificate (if available).
signer_cert_private_key_availableWhether a PrivateKey is available for the selected certificate.
signer_cert_private_key_containerThe name of the PrivateKey container for the certificate (if available).
signer_cert_public_keyThe public key of the certificate.
signer_cert_public_key_algorithmThe textual description of the certificate's public key algorithm.
signer_cert_public_key_lengthThe length of the certificate's public key (in bits).
signer_cert_serial_numberThe serial number of the certificate encoded as a string.
signer_cert_signature_algorithmThe text description of the certificate's signature algorithm.
signer_cert_storeThe name of the certificate store for the client certificate.
signer_cert_store_passwordIf the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.
signer_cert_store_typeThe type of certificate store for this certificate.
signer_cert_subject_alt_namesComma-separated lists of alternative subject names for the certificate.
signer_cert_thumbprint_md5The MD5 hash of the certificate.
signer_cert_thumbprint_sha1The SHA-1 hash of the certificate.
signer_cert_thumbprint_sha256The SHA-256 hash of the certificate.
signer_cert_usageThe text description of UsageFlags .
signer_cert_usage_flagsThe flags that show intended use for the certificate.
signer_cert_versionThe certificate's version number.
signer_cert_subjectThe subject of the certificate used for client authentication.
signer_cert_encodedThe certificate (PEM/Base64 encoded).
signing_algorithmThe signing algorithm.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.

configSets or retrieves a configuration setting.
do_eventsThis method processes events from the internal message queue.
resetResets the class.
signSigns the XML.
verify_signatureVerifies signed XML.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.

on_errorFired when information is available about errors during data delivery.
on_progressFired as progress is made.
on_signature_infoFired when a signature is found.
on_statusProvides information about the current operation.

Config Settings

The following is a list of config settings for the class with short descriptions. Click on the links for further details.

KeyNameThe name of the key used to sign the XML.
LogLevelSpecifies the level of detail that is logged.
NormalizeLineEndingsWhether to normalize line endings when calculating the reference digest.
PreserveWhitespaceWhether to preserve whitespace in the signature.
ReadFromProgressEventWhether to read input data from inside the progress event.
SignatureRelationshipWhether the signature is a child or sibling of the SignatureXPath.
SignerCertCountThe number of parsed signer certificates when verifying a signature.
SignerCertEncoded[i]The parsed signer certificate.
SignWithCryptoAPIWhether to use the Crypto API for signing operations.
WriteToProgressEventWhether to write output data so it is accessible from inside the progress event.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
MaskSensitiveDataWhether sensitive data is masked in log messages.
ProcessIdleEventsWhether the class uses its internal event loop to process events when the main thread is idle.
SelectWaitMillisThe length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.
UseFIPSCompliantAPITells the class whether or not to use FIPS certified APIs.
UseInternalSecurityAPIWhether or not to use the system security libraries or an internal implementation.

canonicalization_method Property

The canonicalization method applied to the signature.

Syntax

def get_canonicalization_method() -> int: ...
def set_canonicalization_method(value: int) -> None: ...

canonicalization_method = property(get_canonicalization_method, set_canonicalization_method)

Default Value

0

Remarks

This property specifies the canonicalization method that is applied to the signature. This may be set before calling sign. This will be set automatically after calling verify_signature. Possible values are:

0 (cmC14N - default) Canonical XML version 1.0
1 (cmC14NComments) Canonical XML version 1.0 with comments
2 (cmC14N11) Canonical XML version 1.1
3 (cmC14N11) Canonical XML version 1.1 with comments
4 (cmExcC14N) Exclusive XML canonicalization version 1.0
5 (cmExcC14NComments) Exclusive XML canonicalization version 1.0 with comments

cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_cert_effective_date() -> str: ...

cert_effective_date = property(get_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_cert_expiration_date() -> str: ...

cert_expiration_date = property(get_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_cert_extended_key_usage() -> str: ...

cert_extended_key_usage = property(get_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_cert_fingerprint() -> str: ...

cert_fingerprint = property(get_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_cert_fingerprint_sha1() -> str: ...

cert_fingerprint_sha1 = property(get_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_cert_fingerprint_sha256() -> str: ...

cert_fingerprint_sha256 = property(get_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

cert_issuer Property

The issuer of the certificate.

Syntax

def get_cert_issuer() -> str: ...

cert_issuer = property(get_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_cert_private_key() -> str: ...

cert_private_key = property(get_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The cert_private_key may be available but not exportable. In this case, cert_private_key returns an empty string.

This property is read-only.

cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_cert_private_key_available() -> bool: ...

cert_private_key_available = property(get_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a cert_private_key is available for the selected certificate. If cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_cert_private_key_container() -> str: ...

cert_private_key_container = property(get_cert_private_key_container, None)

Default Value

""

Remarks

The name of the cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

cert_public_key Property

The public key of the certificate.

Syntax

def get_cert_public_key() -> str: ...

cert_public_key = property(get_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_cert_public_key_algorithm() -> str: ...

cert_public_key_algorithm = property(get_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_cert_public_key_length() -> int: ...

cert_public_key_length = property(get_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_cert_serial_number() -> str: ...

cert_serial_number = property(get_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_cert_signature_algorithm() -> str: ...

cert_signature_algorithm = property(get_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_cert_store() -> bytes: ...
def set_cert_store(value: bytes) -> None: ...

cert_store = property(get_cert_store, set_cert_store)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The cert_store_type property denotes the type of the certificate store specified by cert_store. If the store is password-protected, specify the password in cert_store_password.

cert_store is used in conjunction with the cert_subject property to specify client certificates. If cert_store has a value, and cert_subject or cert_encoded is set, a search for a certificate is initiated. Please see the cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_cert_store_password() -> str: ...
def set_cert_store_password(value: str) -> None: ...

cert_store_password = property(get_cert_store_password, set_cert_store_password)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_cert_store_type() -> int: ...
def set_cert_store_type(value: int) -> None: ...

cert_store_type = property(get_cert_store_type, set_cert_store_type)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

0 (cstUser - default)For Windows, this specifies that the certificate store is a certificate store owned by the current user.

Note: This store type is not available in Java.

1 (cstMachine)For Windows, this specifies that the certificate store is a machine store.

Note: This store type is not available in Java.

2 (cstPFXFile)The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)The certificate store is the name of a Java Key Store (JKS) file containing certificates.

Note: This store type is only available in Java.

5 (cstJKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format.

Note: This store type is only available in Java.

6 (cstPEMKeyFile)The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store).

Note: This store type is only available in Java and .NET.

22 (cstBCFKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format.

Note: This store type is only available in Java and .NET.

23 (cstPKCS11)The certificate is present on a physical security key accessible via a PKCS#11 interface.

To use a security key, the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to cstPKCS11, cert_store_password to the PIN, and cert_store to the full path of the PKCS#11 DLL. The certificate information returned in the on_cert_list event's CertEncoded parameter may be saved for later use.

When using a certificate, pass the previously saved security key information as the cert_store and set cert_store_password to the PIN.

Code Example. SSH Authentication with Security Key: certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);

99 (cstAuto)The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_cert_subject_alt_names() -> str: ...

cert_subject_alt_names = property(get_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_cert_thumbprint_md5() -> str: ...

cert_thumbprint_md5 = property(get_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_cert_thumbprint_sha1() -> str: ...

cert_thumbprint_sha1 = property(get_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_cert_thumbprint_sha256() -> str: ...

cert_thumbprint_sha256 = property(get_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

cert_usage Property

The text description of UsageFlags .

Syntax

def get_cert_usage() -> str: ...

cert_usage = property(get_cert_usage, None)

Default Value

""

Remarks

The text description of cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

  • Digital Signature
  • Non-Repudiation
  • Key Encipherment
  • Data Encipherment
  • Key Agreement
  • Certificate Signing
  • CRL Signing
  • Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_cert_usage_flags() -> int: ...

cert_usage_flags = property(get_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of cert_usage_flags is a combination of the following flags:

0x80Digital Signature
0x40Non-Repudiation
0x20Key Encipherment
0x10Data Encipherment
0x08Key Agreement
0x04Certificate Signing
0x02CRL Signing
0x01Encipher Only

Please see the cert_usage property for a text representation of cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

cert_version Property

The certificate's version number.

Syntax

def get_cert_version() -> str: ...

cert_version = property(get_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_cert_subject() -> str: ...
def set_cert_subject(value: str) -> None: ...

cert_subject = property(get_cert_subject, set_cert_subject)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

FieldMeaning
CNCommon Name. This is commonly a hostname like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma, it must be quoted.

cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_cert_encoded() -> bytes: ...
def set_cert_encoded(value: bytes) -> None: ...

cert_encoded = property(get_cert_encoded, set_cert_encoded)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The cert_store and cert_subject properties also may be used to specify a certificate.

When cert_encoded is set, a search is initiated in the current cert_store for the private key of the certificate. If the key is found, cert_subject is updated to reflect the full subject of the selected certificate; otherwise, cert_subject is set to an empty string.

hmac_key Property

The HMAC key used with the 'HMAC-SHA1' signing algorithm.

Syntax

def get_hmac_key() -> bytes: ...
def set_hmac_key(value: bytes) -> None: ...

hmac_key = property(get_hmac_key, set_hmac_key)

Default Value

""

Remarks

This property defines the HMAC key to be used when signing_algorithm is set to "HMAC-SHA1". This must be set before calling before calling sign.

This property is also applicable when calling verify_signature. This may be set before calling verify_signature or from within the on_signature_info event.

input_file Property

The XML file to process.

Syntax

def get_input_file() -> str: ...
def set_input_file(value: str) -> None: ...

input_file = property(get_input_file, set_input_file)

Default Value

""

Remarks

This property specifies the file to be processed. Set this property to the full or relative path to the file which will be processed.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

input_xml Property

The XML to process.

Syntax

def get_input_xml() -> str: ...
def set_input_xml(value: str) -> None: ...

input_xml = property(get_input_xml, set_input_xml)

Default Value

""

Remarks

This property specifies the XML to be processed.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

output_file Property

The output file.

Syntax

def get_output_file() -> str: ...
def set_output_file(value: str) -> None: ...

output_file = property(get_output_file, set_output_file)

Default Value

""

Remarks

This property specifies the file to which the output will be written. This may be set to an absolute or relative path.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:
  • output_file
  • output_xml: The output data is written to this property if no other destination is specified.

output_xml Property

The output XML after processing.

Syntax

def get_output_xml() -> str: ...
def set_output_xml(value: str) -> None: ...

output_xml = property(get_output_xml, set_output_xml)

Default Value

""

Remarks

This property will be populated with the output from the operation if output_file is not set.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:
  • output_file
  • output_xml: The output data is written to this property if no other destination is specified.

overwrite Property

Indicates whether or not the class should overwrite files.

Syntax

def get_overwrite() -> bool: ...
def set_overwrite(value: bool) -> None: ...

overwrite = property(get_overwrite, set_overwrite)

Default Value

FALSE

Remarks

This property indicates whether or not the class will overwrite output_file. If overwrite is False, an error will be thrown whenever output_file exists before an operation. The default value is False.

reference_count Property

The number of records in the Reference arrays.

Syntax

def get_reference_count() -> int: ...
def set_reference_count(value: int) -> None: ...

reference_count = property(get_reference_count, set_reference_count)

Default Value

0

Remarks

This property controls the size of the following arrays:

The array indices start at 0 and end at reference_count - 1.

reference_hash_algorithm Property

This property defines the hash algorithm to apply to the element specified by XMLElement .

Syntax

def get_reference_hash_algorithm(reference_index: int) -> str: ...
def set_reference_hash_algorithm(reference_index: int, value: str) -> None: ...

Default Value

"SHA1"

Remarks

This property defines the hash algorithm to apply to the element specified by reference_xml_element. Possible values are:

  • "SHA1" (default)
  • "SHA256"
  • "SHA512"

The reference_index parameter specifies the index of the item in the array. The size of the array is controlled by the reference_count property.

reference_hash_value Property

This property holds the calculated hash value for the specified XMLElement .

Syntax

def get_reference_hash_value(reference_index: int) -> str: ...

Default Value

""

Remarks

This property holds the calculated hash value for the specified reference_xml_element.

The reference_index parameter specifies the index of the item in the array. The size of the array is controlled by the reference_count property.

This property is read-only.

reference_transform_algorithms Property

This property specifies a comma separated list of canonicalization algorithms to be applied to XMLElement .

Syntax

def get_reference_transform_algorithms(reference_index: int) -> str: ...
def set_reference_transform_algorithms(reference_index: int, value: str) -> None: ...

Default Value

"C14N"

Remarks

This property specifies a comma separated list of canonicalization algorithms to be applied to reference_xml_element. The XML data specified by reference_xml_element will be transformed using the specified algorithm(s) before the hash_algorithm is applied. The default value is "C14N". Possible values are:

"C14N" Canonical XML version 1.0
"C14N_COMMENTS" Canonical XML version 1.0 with comments
"C14N11" Canonical XML version 1.1
"C14N11_COMMENTS" Canonical XML version 1.1 with comments
"EXC_C14N" Exclusive XML canonicalization version 1.0
"EXC_C14N_COMMENTS" Exclusive XML canonicalization version 1.0 with comments

The reference_index parameter specifies the index of the item in the array. The size of the array is controlled by the reference_count property.

reference_uri Property

This property is the URI of the reference.

Syntax

def get_reference_uri(reference_index: int) -> str: ...
def set_reference_uri(reference_index: int, value: str) -> None: ...

Default Value

""

Remarks

This property is the URI of the reference. The value specified here identifies the data within the document.

When signing, this value may be set to a URI reference which identifies reference_xml_element. reference_xml_element must be set separately.

When verifying, this value may be checked within the on_signature_info event to identify the location of reference_xml_element. reference_xml_element must be set separately.

The reference_index parameter specifies the index of the item in the array. The size of the array is controlled by the reference_count property.

reference_xml_element Property

This property specifies XML element to sign or verify using XPath notation.

Syntax

def get_reference_xml_element(reference_index: int) -> str: ...
def set_reference_xml_element(reference_index: int, value: str) -> None: ...

Default Value

"/"

Remarks

This property specifies XML element to sign or verify using XPath notation. When signing, this must be set before calling sign. When verifying, this must be set from within the on_signature_info event. The reference_uri property may be used to help identify the correct XML element.

/root/myElement XPath syntax
/root/[1] XPath syntax using an index
/root/ns:myElement XPath syntax where the element has a namespace
myElement Just the element name
@id=myid Attribute selector: This will select an element with an attribute "id" whose value is "myid".
/root/myElement[1]/ns:name2[@attr=attrValue] XPath syntax using an index and attribute selector

The reference_index parameter specifies the index of the item in the array. The size of the array is controlled by the reference_count property.

signature_xpath Property

The XPath of the signature.

Syntax

def get_signature_xpath() -> str: ...
def set_signature_xpath(value: str) -> None: ...

signature_xpath = property(get_signature_xpath, set_signature_xpath)

Default Value

"/"

Remarks

This property specifies the XPath in the XML where the signature will be placed.

This may be set before calling sign. This property will be populated when calling verify_signature.

The default value is "/".

signer_cert_effective_date Property

The date on which this certificate becomes valid.

Syntax

def get_signer_cert_effective_date() -> str: ...

signer_cert_effective_date = property(get_signer_cert_effective_date, None)

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

signer_cert_expiration_date Property

The date on which the certificate expires.

Syntax

def get_signer_cert_expiration_date() -> str: ...

signer_cert_expiration_date = property(get_signer_cert_expiration_date, None)

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

signer_cert_extended_key_usage Property

A comma-delimited list of extended key usage identifiers.

Syntax

def get_signer_cert_extended_key_usage() -> str: ...

signer_cert_extended_key_usage = property(get_signer_cert_extended_key_usage, None)

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

signer_cert_fingerprint Property

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

def get_signer_cert_fingerprint() -> str: ...

signer_cert_fingerprint = property(get_signer_cert_fingerprint, None)

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

signer_cert_fingerprint_sha1 Property

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

def get_signer_cert_fingerprint_sha1() -> str: ...

signer_cert_fingerprint_sha1 = property(get_signer_cert_fingerprint_sha1, None)

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

signer_cert_fingerprint_sha256 Property

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

def get_signer_cert_fingerprint_sha256() -> str: ...

signer_cert_fingerprint_sha256 = property(get_signer_cert_fingerprint_sha256, None)

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

signer_cert_issuer Property

The issuer of the certificate.

Syntax

def get_signer_cert_issuer() -> str: ...

signer_cert_issuer = property(get_signer_cert_issuer, None)

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

signer_cert_private_key Property

The private key of the certificate (if available).

Syntax

def get_signer_cert_private_key() -> str: ...

signer_cert_private_key = property(get_signer_cert_private_key, None)

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The signer_cert_private_key may be available but not exportable. In this case, signer_cert_private_key returns an empty string.

This property is read-only.

signer_cert_private_key_available Property

Whether a PrivateKey is available for the selected certificate.

Syntax

def get_signer_cert_private_key_available() -> bool: ...

signer_cert_private_key_available = property(get_signer_cert_private_key_available, None)

Default Value

FALSE

Remarks

Whether a signer_cert_private_key is available for the selected certificate. If signer_cert_private_key_available is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

signer_cert_private_key_container Property

The name of the PrivateKey container for the certificate (if available).

Syntax

def get_signer_cert_private_key_container() -> str: ...

signer_cert_private_key_container = property(get_signer_cert_private_key_container, None)

Default Value

""

Remarks

The name of the signer_cert_private_key container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

signer_cert_public_key Property

The public key of the certificate.

Syntax

def get_signer_cert_public_key() -> str: ...

signer_cert_public_key = property(get_signer_cert_public_key, None)

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

signer_cert_public_key_algorithm Property

The textual description of the certificate's public key algorithm.

Syntax

def get_signer_cert_public_key_algorithm() -> str: ...

signer_cert_public_key_algorithm = property(get_signer_cert_public_key_algorithm, None)

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

signer_cert_public_key_length Property

The length of the certificate's public key (in bits).

Syntax

def get_signer_cert_public_key_length() -> int: ...

signer_cert_public_key_length = property(get_signer_cert_public_key_length, None)

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

signer_cert_serial_number Property

The serial number of the certificate encoded as a string.

Syntax

def get_signer_cert_serial_number() -> str: ...

signer_cert_serial_number = property(get_signer_cert_serial_number, None)

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

signer_cert_signature_algorithm Property

The text description of the certificate's signature algorithm.

Syntax

def get_signer_cert_signature_algorithm() -> str: ...

signer_cert_signature_algorithm = property(get_signer_cert_signature_algorithm, None)

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

signer_cert_store Property

The name of the certificate store for the client certificate.

Syntax

def get_signer_cert_store() -> bytes: ...
def set_signer_cert_store(value: bytes) -> None: ...

signer_cert_store = property(get_signer_cert_store, set_signer_cert_store)

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The signer_cert_store_type property denotes the type of the certificate store specified by signer_cert_store. If the store is password-protected, specify the password in signer_cert_store_password.

signer_cert_store is used in conjunction with the signer_cert_subject property to specify client certificates. If signer_cert_store has a value, and signer_cert_subject or signer_cert_encoded is set, a search for a certificate is initiated. Please see the signer_cert_subject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

MYA certificate store holding personal certificates with their associated private keys.
CACertifying authority certificates.
ROOTRoot certificates.

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

signer_cert_store_password Property

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

def get_signer_cert_store_password() -> str: ...
def set_signer_cert_store_password(value: str) -> None: ...

signer_cert_store_password = property(get_signer_cert_store_password, set_signer_cert_store_password)

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

signer_cert_store_type Property

The type of certificate store for this certificate.

Syntax

def get_signer_cert_store_type() -> int: ...
def set_signer_cert_store_type(value: int) -> None: ...

signer_cert_store_type = property(get_signer_cert_store_type, set_signer_cert_store_type)

Default Value

0

Remarks

The type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

0 (cstUser - default)For Windows, this specifies that the certificate store is a certificate store owned by the current user.

Note: This store type is not available in Java.

1 (cstMachine)For Windows, this specifies that the certificate store is a machine store.

Note: This store type is not available in Java.

2 (cstPFXFile)The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)The certificate store is the name of a Java Key Store (JKS) file containing certificates.

Note: This store type is only available in Java.

5 (cstJKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format.

Note: This store type is only available in Java.

6 (cstPEMKeyFile)The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store).

Note: This store type is only available in Java and .NET.

22 (cstBCFKSBlob)The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format.

Note: This store type is only available in Java and .NET.

23 (cstPKCS11)The certificate is present on a physical security key accessible via a PKCS#11 interface.

To use a security key, the necessary data must first be collected using the CertMgr class. The list_store_certificates method may be called after setting cert_store_type to cstPKCS11, cert_store_password to the PIN, and cert_store to the full path of the PKCS#11 DLL. The certificate information returned in the on_cert_list event's CertEncoded parameter may be saved for later use.

When using a certificate, pass the previously saved security key information as the signer_cert_store and set signer_cert_store_password to the PIN.

Code Example. SSH Authentication with Security Key: certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);

99 (cstAuto)The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

signer_cert_subject_alt_names Property

Comma-separated lists of alternative subject names for the certificate.

Syntax

def get_signer_cert_subject_alt_names() -> str: ...

signer_cert_subject_alt_names = property(get_signer_cert_subject_alt_names, None)

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

signer_cert_thumbprint_md5 Property

The MD5 hash of the certificate.

Syntax

def get_signer_cert_thumbprint_md5() -> str: ...

signer_cert_thumbprint_md5 = property(get_signer_cert_thumbprint_md5, None)

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

signer_cert_thumbprint_sha1 Property

The SHA-1 hash of the certificate.

Syntax

def get_signer_cert_thumbprint_sha1() -> str: ...

signer_cert_thumbprint_sha1 = property(get_signer_cert_thumbprint_sha1, None)

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

signer_cert_thumbprint_sha256 Property

The SHA-256 hash of the certificate.

Syntax

def get_signer_cert_thumbprint_sha256() -> str: ...

signer_cert_thumbprint_sha256 = property(get_signer_cert_thumbprint_sha256, None)

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

signer_cert_usage Property

The text description of UsageFlags .

Syntax

def get_signer_cert_usage() -> str: ...

signer_cert_usage = property(get_signer_cert_usage, None)

Default Value

""

Remarks

The text description of signer_cert_usage_flags.

This value will be one or more of the following strings and will be separated by commas:

  • Digital Signature
  • Non-Repudiation
  • Key Encipherment
  • Data Encipherment
  • Key Agreement
  • Certificate Signing
  • CRL Signing
  • Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

signer_cert_usage_flags Property

The flags that show intended use for the certificate.

Syntax

def get_signer_cert_usage_flags() -> int: ...

signer_cert_usage_flags = property(get_signer_cert_usage_flags, None)

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of signer_cert_usage_flags is a combination of the following flags:

0x80Digital Signature
0x40Non-Repudiation
0x20Key Encipherment
0x10Data Encipherment
0x08Key Agreement
0x04Certificate Signing
0x02CRL Signing
0x01Encipher Only

Please see the signer_cert_usage property for a text representation of signer_cert_usage_flags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

signer_cert_version Property

The certificate's version number.

Syntax

def get_signer_cert_version() -> str: ...

signer_cert_version = property(get_signer_cert_version, None)

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

signer_cert_subject Property

The subject of the certificate used for client authentication.

Syntax

def get_signer_cert_subject() -> str: ...
def set_signer_cert_subject(value: str) -> None: ...

signer_cert_subject = property(get_signer_cert_subject, set_signer_cert_subject)

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

FieldMeaning
CNCommon Name. This is commonly a hostname like www.server.com.
OOrganization
OUOrganizational Unit
LLocality
SState
CCountry
EEmail Address

If a field value contains a comma, it must be quoted.

signer_cert_encoded Property

The certificate (PEM/Base64 encoded).

Syntax

def get_signer_cert_encoded() -> bytes: ...
def set_signer_cert_encoded(value: bytes) -> None: ...

signer_cert_encoded = property(get_signer_cert_encoded, set_signer_cert_encoded)

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The signer_cert_store and signer_cert_subject properties also may be used to specify a certificate.

When signer_cert_encoded is set, a search is initiated in the current signer_cert_store for the private key of the certificate. If the key is found, signer_cert_subject is updated to reflect the full subject of the selected certificate; otherwise, signer_cert_subject is set to an empty string.

signing_algorithm Property

The signing algorithm.

Syntax

def get_signing_algorithm() -> str: ...
def set_signing_algorithm(value: str) -> None: ...

signing_algorithm = property(get_signing_algorithm, set_signing_algorithm)

Default Value

""

Remarks

This property specifies the signing algorithm.

This may be set before calling sign. This value will be set after calling verify_signature. Possible values are:

  • "RSA-SHA1" (default)
  • "RSA-SHA256"
  • "DSA-SHA1"
  • "HMAC-SHA1"
Note: When set to "HMAC-SHA1" hmac_key must also be set.

config Method

Sets or retrieves a configuration setting.

Syntax

def config(configuration_string: str) -> str: ...

Remarks

config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

do_events Method

This method processes events from the internal message queue.

Syntax

def do_events() -> None: ...

Remarks

When do_events is called, the class processes any available events. If no events are available, it waits for a preset period of time, and then returns.

reset Method

Resets the class.

Syntax

def reset() -> None: ...

Remarks

When called, the component will reset all of its properties to their default values.

sign Method

Signs the XML.

Syntax

def sign() -> None: ...

Remarks

This methods signs the XML.

Before calling sign specify the XML to sign by setting input_file, or input_xml.

The references property must be set. At least one reference must be set. A reference defines the XML element to sign, and the options that specify how it is transformed and hashed during the signing process.

Set certificate to a certificate with private key.

Optionally set the canonicalization_method. This determines how the signature itself is canonicalized. signing_algorithm defines the algorithm used to sign. The signature_xpath property may be set to specify the location in the XML document where the signature will be placed.

Lastly, call sign to sign the XML.

The following properties are applicable when calling this method:

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

When a valid source is found, the search stops. The order in which the output properties are checked is as follows:

verify_signature Method

Verifies signed XML.

Syntax

def verify_signature() -> None: ...

Remarks

This method verifies signatures contained in the XML.

When verify_signature is called, the class will scan the XML document and fire the on_signature_info event for each signature that is found. When the on_signature_info event fires the references collection will be populated.

Within the on_signature_info event the reference_xml_element property must be set to the location of the XML element to which the signature applies. The reference_uri property may contain data helpful to locating the XML element.

The reference_xml_element property specifies the XPath to the element. For instance:

/root/myElement XPath syntax
/root/[1] XPath syntax using an index
/root/ns:myElement XPath syntax where the element has a namespace
myElement Just the element name
@id=myid Attribute selector: This will select an element with an attribute "id" whose value is "myid".
/root/myElement[1]/ns:name2[@attr=attrValue] XPath syntax using an index and attribute selector

The signature is verified either using a key parsed from the signed XML, or using the certificate specified by the signer_cert property. The class will automatically parse the signer certificate (if present) from the signed XML and populate the signer_cert property with the parsed value.

When on_signature_info fires, if the SignerCertParsed parameter is True the signer_cert property may be inspected to see the details of the parsed certificate. If SignerCertParsed is False, then the signer_cert property must be set to a valid certificate for signature verification to proceed.

When the on_signature_info event finishes firing, the certificate present in the signer_cert property will be used to verify the signature, whether this is the certificate automatically parsed by the class or a different certificate specified within the event.

If the signature was successfully verified the method will return without error. If the signature was not verified the method fails with an error.

on_error Event

Fired when information is available about errors during data delivery.

Syntax

class XMLSigErrorEventParams(object):
  @property
  def error_code() -> int: ...

  @property
  def description() -> str: ...

# In class XMLSig:
@property
def on_error() -> Callable[[XMLSigErrorEventParams], None]: ...
@on_error.setter
def on_error(event_hook: Callable[[XMLSigErrorEventParams], None]) -> None: ...

Remarks

The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

on_progress Event

Fired as progress is made.

Syntax

class XMLSigProgressEventParams(object):
  @property
  def bytes_processed() -> int: ...

  @property
  def percent_processed() -> int: ...

  @property
  def operation() -> int: ...

  @property
  def is_eof() -> bool: ...
  @is_eof.setter
  def is_eof(value) -> None: ...

# In class XMLSig:
@property
def on_progress() -> Callable[[XMLSigProgressEventParams], None]: ...
@on_progress.setter
def on_progress(event_hook: Callable[[XMLSigProgressEventParams], None]) -> None: ...

Remarks

This event is fired automatically as data is processed by the class.

The PercentProcessed parameter indicates the current status of the operation.

The BytesProcessed parameter holds the total number of bytes processed so far.

The Operation parameter is only applicable when either ReadFromProgressEvent or WriteToProgressEvent is set to True. This parameter defines whether a Read or Write operation is required. If the configuration settings are not set this parameter will always return 0. Possible values are:

0None
1Read
2Write

The IsEOF parameter is only applicable when either ReadFromProgressEvent or WriteToProgressEvent is set to True. This parameter defines whether the Read or Write operation is complete. When the Operation is Read (1) this parameter must be set to indicate that all data has been supplied to the class. When the Operation is Write (2) this value may be queried to determine when all data has been processed.

on_signature_info Event

Fired when a signature is found.

Syntax

class XMLSigSignatureInfoEventParams(object):
  @property
  def signature_id() -> str: ...

  @property
  def signer_cert_parsed() -> bool: ...

# In class XMLSig:
@property
def on_signature_info() -> Callable[[XMLSigSignatureInfoEventParams], None]: ...
@on_signature_info.setter
def on_signature_info(event_hook: Callable[[XMLSigSignatureInfoEventParams], None]) -> None: ...

Remarks

This event fires when calling verify_signature for each signature found within the XML document.

SignatureId is the id of the signature.

SignerCertParsed indicates whether the signer's certificate was automatically parsed from the signed XML.

Verification Notes

When verify_signature is called, the class will scan the XML document and fire the on_signature_info event for each signature that is found. When the on_signature_info event fires the references collection will be populated.

Within the on_signature_info event the reference_xml_element property must be set to the location of the XML element to which the signature applies. The reference_uri property may contain data helpful to locating the XML element.

The reference_xml_element property specifies the XPath to the element. For instance:

/root/myElement XPath syntax
/root/[1] XPath syntax using an index
/root/ns:myElement XPath syntax where the element has a namespace
myElement Just the element name
@id=myid Attribute selector: This will select an element with an attribute "id" whose value is "myid".
/root/myElement[1]/ns:name2[@attr=attrValue] XPath syntax using an index and attribute selector

The signature is verified either using a key parsed from the signed XML, or using the certificate specified by the signer_cert property. The class will automatically parse the signer certificate (if present) from the signed XML and populate the signer_cert property with the parsed value.

When on_signature_info fires, if the SignerCertParsed parameter is True the signer_cert property may be inspected to see the details of the parsed certificate. If SignerCertParsed is False, then the signer_cert property must be set to a valid certificate for signature verification to proceed.

When the on_signature_info event finishes firing, the certificate present in the signer_cert property will be used to verify the signature, whether this is the certificate automatically parsed by the class or a different certificate specified within the event.

If the signature was successfully verified the method will return without error. If the signature was not verified the method fails with an error.

on_status Event

Provides information about the current operation.

Syntax

class XMLSigStatusEventParams(object):
  @property
  def message() -> str: ...

# In class XMLSig:
@property
def on_status() -> Callable[[XMLSigStatusEventParams], None]: ...
@on_status.setter
def on_status(event_hook: Callable[[XMLSigStatusEventParams], None]) -> None: ...

Remarks

The event is fired for informational and logging purposes only. It may be used to track the progress of an operation.

The level of detail is controlled by the LogLevel setting.

XMLSig Config Settings

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the config method.

XMLSig Config Settings

KeyName:   The name of the key used to sign the XML.

This setting optionally holds the key name which may be useful to the recipient to help identify the key used to create the signature. This may be set before calling sign. When calling verify_signature this may be queried inside the on_signature_info event.

Note that this value is only informative, it does not affect processing.

LogLevel:   Specifies the level of detail that is logged.

This setting controls the level of detail that is logged through the on_status event. Possible values are:

0 (None)No events are logged.
1 (Info - default)Informational events are logged.
2 (Verbose)Detailed data is logged.
3 (Debug)Debug data is logged.
NormalizeLineEndings:   Whether to normalize line endings when calculating the reference digest.

This setting specifies whether to normalize line endings when calculating the reference digest. When set to True all line endings will be converted to LF. The default value is True.

PreserveWhitespace:   Whether to preserve whitespace in the signature.

This setting specifies whether whitespace is preserved when canonicalizing XML. The default value is False.

ReadFromProgressEvent:   Whether to read input data from inside the progress event.

When set to True this setting allows input data to be specified from within the on_progress event. The class will repeatedly fire the on_progress event to ask for data. Inside the event set input_xml when the Operation parameter of the event is 1 (Read). When all data has been provided set the IsEOF parameter of the event to True. This allows input data to be chunked and provided piece by piece. The default value is False.

SignatureRelationship:   Whether the signature is a child or sibling of the SignatureXPath.

This setting specifies whether the created signature is included as a child or sibling of the element specified by signature_xpath. If this is set to 0 (default), the signature is inserted as a child of the element. If this is set to 1, the signature is inserted as a sibling after the element. The default value is 0 (child).

Example: SignatureRelationship is set to 0 (child - default) xmlsig1.SignatureXPath = "/root/node1"; Produces XML like: 

<root>
  <node1>
    <ds:Signature>...</ds:Signature>
  </node1>
  <node2></node2>
  <node3></node3>
</root>

Example: SignatureRelationship is set to 1 (sibling) xmlsig1.SignatureXPath = "/root/node1"; xmlsig1.Config("SignatureRelationship=1"); Produces XML like: 

<root>
  <node1></node1>
  <ds:Signature>...</ds:Signature>
  <node2></node2>
  <node3></node3>
</root>

SignerCertCount:   The number of parsed signer certificates when verifying a signature.

This setting is populated when calling verify_signature. It holds the number of signer certificates that were parsed from the message. In most cases a single certificate is present and signer_cert is populated. In some cases, multiple certificates in a chain may be present, in that case each parsed certificate can be accessed via this property and SignerCertEncoded. For instance: int certCount = Int32.Parse(xmlsig.Config("SignerCertCount")); for(int i=0;i<certCount;i++) { Console.WriteLine(xmlsig.Config("SignerCertEncoded[ " + i + "]")); }

SignerCertEncoded[i]:   The parsed signer certificate.

This setting is used in conjunction with SignerCertCount to retrieve the base64 encoded signer certificate parsed from the message. Valid values for the index are from 0 to SignerCertCount - 1. SignerCertEncoded

SignWithCryptoAPI:   Whether to use the Crypto API for signing operations.

This setting determines whether to use the Microsoft Crypto API to sign. This is helpful in cases where the certificate is present in the Windows Certificate Store but the private key is not marked as exportable. For instance when using a USB security key. The default value is False.

Note: This functionality is only available on Windows.

WriteToProgressEvent:   Whether to write output data so it is accessible from inside the progress event.

When set to True this setting allows output data to be obtained from within the on_progress event. The class will repeatedly fire the on_progress event to provide output data. Inside the event check output_xml when the Operation parameter of the event is 2 (Write). The IsEOF parameter should be checked inside the event to determine when all output data has been provided. This allows output data to be chunked and obtained piece by piece. The default value is False.

Base Config Settings

BuildInfo:   Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage:   The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

IdentifierName
037IBM EBCDIC - U.S./Canada
437OEM - United States
500IBM EBCDIC - International
708Arabic - ASMO 708
709Arabic - ASMO 449+, BCON V4
710Arabic - Transparent Arabic
720Arabic - Transparent ASMO
737OEM - Greek (formerly 437G)
775OEM - Baltic
850OEM - Multilingual Latin I
852OEM - Latin II
855OEM - Cyrillic (primarily Russian)
857OEM - Turkish
858OEM - Multilingual Latin I + Euro symbol
860OEM - Portuguese
861OEM - Icelandic
862OEM - Hebrew
863OEM - Canadian-French
864OEM - Arabic
865OEM - Nordic
866OEM - Russian
869OEM - Modern Greek
870IBM EBCDIC - Multilingual/ROECE (Latin-2)
874ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875IBM EBCDIC - Modern Greek
932ANSI/OEM - Japanese, Shift-JIS
936ANSI/OEM - Simplified Chinese (PRC, Singapore)
949ANSI/OEM - Korean (Unified Hangul Code)
950ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026IBM EBCDIC - Turkish (Latin-5)
1047IBM EBCDIC - Latin 1/Open System
1140IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141IBM EBCDIC - Germany (20273 + Euro symbol)
1142IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144IBM EBCDIC - Italy (20280 + Euro symbol)
1145IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147IBM EBCDIC - France (20297 + Euro symbol)
1148IBM EBCDIC - International (500 + Euro symbol)
1149IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201Unicode UCS-2 Big-Endian
1250ANSI - Central European
1251ANSI - Cyrillic
1252ANSI - Latin I
1253ANSI - Greek
1254ANSI - Turkish
1255ANSI - Hebrew
1256ANSI - Arabic
1257ANSI - Baltic
1258ANSI/OEM - Vietnamese
1361Korean (Johab)
10000MAC - Roman
10001MAC - Japanese
10002MAC - Traditional Chinese (Big5)
10003MAC - Korean
10004MAC - Arabic
10005MAC - Hebrew
10006MAC - Greek I
10007MAC - Cyrillic
10008MAC - Simplified Chinese (GB 2312)
10010MAC - Romania
10017MAC - Ukraine
10021MAC - Thai
10029MAC - Latin II
10079MAC - Icelandic
10081MAC - Turkish
10082MAC - Croatia
12000Unicode UCS-4 Little-Endian
12001Unicode UCS-4 Big-Endian
20000CNS - Taiwan
20001TCA - Taiwan
20002Eten - Taiwan
20003IBM5550 - Taiwan
20004TeleText - Taiwan
20005Wang - Taiwan
20105IA5 IRV International Alphabet No. 5 (7-bit)
20106IA5 German (7-bit)
20107IA5 Swedish (7-bit)
20108IA5 Norwegian (7-bit)
20127US-ASCII (7-bit)
20261T.61
20269ISO 6937 Non-Spacing Accent
20273IBM EBCDIC - Germany
20277IBM EBCDIC - Denmark/Norway
20278IBM EBCDIC - Finland/Sweden
20280IBM EBCDIC - Italy
20284IBM EBCDIC - Latin America/Spain
20285IBM EBCDIC - United Kingdom
20290IBM EBCDIC - Japanese Katakana Extended
20297IBM EBCDIC - France
20420IBM EBCDIC - Arabic
20423IBM EBCDIC - Greek
20424IBM EBCDIC - Hebrew
20833IBM EBCDIC - Korean Extended
20838IBM EBCDIC - Thai
20866Russian - KOI8-R
20871IBM EBCDIC - Icelandic
20880IBM EBCDIC - Cyrillic (Russian)
20905IBM EBCDIC - Turkish
20924IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932JIS X 0208-1990 & 0121-1990
20936Simplified Chinese (GB2312)
21025IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027Extended Alpha Lowercase
21866Ukrainian (KOI8-U)
28591ISO 8859-1 Latin I
28592ISO 8859-2 Central Europe
28593ISO 8859-3 Latin 3
28594ISO 8859-4 Baltic
28595ISO 8859-5 Cyrillic
28596ISO 8859-6 Arabic
28597ISO 8859-7 Greek
28598ISO 8859-8 Hebrew
28599ISO 8859-9 Latin 5
28605ISO 8859-15 Latin 9
29001Europa 3
38598ISO 8859-8 Hebrew
50220ISO 2022 Japanese with no halfwidth Katakana
50221ISO 2022 Japanese with halfwidth Katakana
50222ISO 2022 Japanese JIS X 0201-1989
50225ISO 2022 Korean
50227ISO 2022 Simplified Chinese
50229ISO 2022 Traditional Chinese
50930Japanese (Katakana) Extended
50931US/Canada and Japanese
50933Korean Extended and Korean
50935Simplified Chinese Extended and Simplified Chinese
50936Simplified Chinese
50937US/Canada and Traditional Chinese
50939Japanese (Latin) Extended and Japanese
51932EUC - Japanese
51936EUC - Simplified Chinese
51949EUC - Korean
51950EUC - Traditional Chinese
52936HZ-GB2312 Simplified Chinese
54936Windows XP: GB18030 Simplified Chinese (4 Byte)
57002ISCII Devanagari
57003ISCII Bengali
57004ISCII Tamil
57005ISCII Telugu
57006ISCII Assamese
57007ISCII Oriya
57008ISCII Kannada
57009ISCII Malayalam
57010ISCII Gujarati
57011ISCII Punjabi
65000Unicode UTF-7
65001Unicode UTF-8
The following is a list of valid code page identifiers for Mac OS only:
IdentifierName
1ASCII
2NEXTSTEP
3JapaneseEUC
4UTF8
5ISOLatin1
6Symbol
7NonLossyASCII
8ShiftJIS
9ISOLatin2
10Unicode
11WindowsCP1251
12WindowsCP1252
13WindowsCP1253
14WindowsCP1254
15WindowsCP1250
21ISO2022JP
30MacOSRoman
10UTF16String
0x90000100UTF16BigEndian
0x94000100UTF16LittleEndian
0x8c000100UTF32String
0x98000100UTF32BigEndian
0x9c000100UTF32LittleEndian
65536Proprietary

LicenseInfo:   Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

  • Product: The product the license is for.
  • Product Key: The key the license was generated from.
  • License Source: Where the license was found (e.g., RuntimeLicense, License File).
  • License Type: The type of license installed (e.g., Royalty Free, Single Server).
  • Last Valid Build: The last valid build number for which the license will work.
MaskSensitiveData:   Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to True to mask sensitive data. The default is True.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

ProcessIdleEvents:   Whether the class uses its internal event loop to process events when the main thread is idle.

If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

SelectWaitMillis:   The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.

If there are no events to process when do_events is called, the class will wait for the amount of time specified here before returning. The default value is 20.

UseFIPSCompliantAPI:   Tells the class whether or not to use FIPS certified APIs.

When set to True, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle Federal Information Processing Standards (FIPS), while all other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the UseFIPSCompliantAPI configuration setting to True. This is a static setting that applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details, please see the FIPS 140-2 Compliance article.

Note: This setting is applicable only on Windows.

Note: Enabling FIPS compliance requires a special license; please contact sales@nsoftware.com for details.

UseInternalSecurityAPI:   Whether or not to use the system security libraries or an internal implementation.

When set to False, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to True tells the class to use the internal implementation instead of using the system security libraries.

On Windows, this setting is set to False by default. On Linux/macOS, this setting is set to True by default.

To use the system security libraries for Linux, OpenSSL support must be enabled. For more information on how to enable OpenSSL, please refer to the OpenSSL Notes section.

XMLSig Errors

XMLSig Errors

602   Unsupported value. Check the description for details.
603   Failed to match the digest value during signature verification.
604   Signature verification failed.
605   Could not find the referenced element.
606   No valid signature was found in the document.
607   Failed to write output.
608   Invalid SignatureXPath value.
611   Failed parsing certificate data.

XML Errors

101   Invalid attribute index.
102   No attributes available.
103   Invalid namespace index.
104   No namespaces available.
105   Invalid element index.
106   No elements available.
107   Attribute does not exist.
201   Unbalanced element tag.
202   Unknown element prefix (cannot find namespace).
203   Unknown attribute prefix (cannot find namespace).
204   Invalid XML markup.
205   Invalid end state for parser.
206   Document contains unbalanced elements.
207   Invalid xpath.
208   No such child.
209   Top element does not match start of path.
210   DOM tree unavailable (set build_dom to True and reparse).
302   Cannot open file.
401   Invalid XML would be generated.
402   An invalid XML name has been specified.