DCAuth Class
Properties Methods Events Configuration Settings Errors
The DCAuth class represents the private key side of the SecureBlackbox distributed cryptography protocol.
Syntax
DCAuth
Remarks
The purpose of DCAuth is to sign async requests produced by SignAsyncBegin calls. For each incoming async request containing a document hash, DCAuth produces the corresponding async response containing a signature over that hash.
Protocol Overview
The distributed cryptography protocol involves two principal parties. The signing party, represented by classes such as PDFSigner, XAdESSigner, or OfficeSigner, pre-signs documents (such as PDF files), and encapsulates their hashes into what is called an async request. It then communicates the async request to the private key side, where the DCAuth class extracts the hash and signs it with a local private key. DCAuth then encapsulates the signature into an async response, which is sent back to the signing party. The signing party completes the signing operation by extracting the signature from the async response and embedding it into the pre-signed document.
The protocol supports a variety of uses. The scheme above describes the most typical of them, where the signing party is represented by a web application, and the private key side is represented by a workstation. In that particular scenario DC provides a mechanism for the web app to sign documents residing on the web server with private keys residing on the users workstations, perhaps in non-exportable form (e.g. a USB dongle). Other uses include creation of a signing server for a team of driver developers, or an automated signing gateway for outgoing official documents.
In the webapp-to-browser setting the DCAuth control would normally be used within a web server running on the users workstation. That web server would accept async requests from the web page running in the browser, use DCAuth to generate the matching async response, and feed that response back to the web page. The web page will then submit it back to the web server.
Configuring and Using DCAuth
To process an async request, you need to set up a DCAuth object first, and then call its ProcessRequest method:
- Set the KeyId and KeySecret properties so they match the credentials used by the signing party - e.g. those of PDFSigner object:
DCAuth.KeyId = "mykeyid"; DCAuth.KeySecret = "mykeysecret123";
These two properties are used to verify the integrity of the incoming async requests. Keep them safe.
- Provide the signing certificate:
DCAuth.SigningCertificate = "C:\Certs\SigningCert.pfx"; DCAuth.CertPassword = "password789";
Alternatively, use StorageId to provide a certificate residing elsewhere, such as a PKCS#11 device.
- Assign the async request to the Input property:
DCAuth.Input = Request;
Make sure to provide the request in its original XML format. Some technologies and SecureBlackbox code samples may apply additional encoding when conveying async requests from their origin to the DCAuth endpoint. Please double check that you assign the request without any encodings applied. An async request is a properly formed XML document with the root element of SecureBlackboxAsyncState.
- Call the ProcessRequest method:
DCAuth.ProcessRequest;
This method performs the actual signing of the hash. Make sure your code is prepared for potential signing errors.
- If the ProcessRequest call has succeeded, grab the async response from the Output property:
Result = DCAuth.Output;
Property List
The following is the full list of the properties of the class with short descriptions. Click on the links for further details.
ExternalCryptoAsyncDocumentID | Specifies the document ID for SignAsyncEnd() call Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch. |
ExternalCryptoCustomParams | Custom parameters to be passed to the signing service (uninterpreted). |
ExternalCryptoData | Additional data to be included in the async state and mirrored back by the requestor. |
ExternalCryptoExternalHashCalculation | Specifies whether the message hash is to be calculated at the external endpoint. |
ExternalCryptoHashAlgorithm | Specifies the request's signature hash algorithm. |
ExternalCryptoKeyID | The ID of the pre-shared key used for DC request authentication. |
ExternalCryptoKeySecret | The pre-shared key used for DC request authentication. |
ExternalCryptoMethod | Specifies the asynchronous signing method. |
ExternalCryptoMode | Specifies the external cryptography mode. |
ExternalCryptoPublicKeyAlgorithm | Provide public key algorithm here if the certificate is not available on the pre-signing stage. |
FIPSMode | Reserved. |
Input | Contains the signing request to process. |
InputEncoding | Specifies request encoding. |
KeyId | Specifies the KeyID of the pre-shared authentication key. |
KeySecret | The pre-shared authentication key. |
Output | Contains the output of the request processing. |
OutputEncoding | Specifies response encoding. |
Profile | Specifies a pre-defined profile to apply when creating the signature. |
SigningCertBytes | Returns raw certificate data in DER format. |
SigningCertHandle | Allows to get or set a 'handle', a unique identifier of the underlying property object. |
StorageId | Specifies the signing certificate residing in an alternative location. |
Method List
The following is the full list of the methods of the class with short descriptions. Click on the links for further details.
Config | Sets or retrieves a configuration setting. |
DoAction | Performs an additional action. |
ProcessRequest | Processes the request. |
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.
CustomParametersReceived | Passes custom request parameters to the application. |
Error | Reports information about errors during request processing or signing. |
ExternalSign | Handles remote or external signing initiated by the SignExternal method or other source. |
KeySecretNeeded | Requests the key secret from the application. |
Notification | This event notifies the application about an underlying control flow event. |
ParameterReceived | Passes a standard request parameter to the user code. |
SignRequest | This event signifies the processing of an atomic signing request. |
SignRequestCompleted | This event signifies completion of the processing of an atomic signing request. |
Configuration Settings
The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.
DataURL | (obsolete) The DataURL parameter to pass to the signer. |
GoURL | (obsolete) The GoURL parameter to pass to the signer. |
RequireDefinedSignCert | (obsolete) The RequireDefinedSignCert parameter to pass to the signer. |
SchemeParams | The algorithm scheme parameters to employ. |
SessionID | (obsolete) The SessionID parameter to pass to the signer. |
TokenName | The TokenName parameter to pass to the signer. |
TokensLibraries | (obsolete) The TokensLibraries parameter to pass to the signer. |
CheckKeyIntegrityBeforeUse | Enables or disable private key integrity check before use. |
CookieCaching | Specifies whether a cookie cache should be used for HTTP(S) transports. |
Cookies | Gets or sets local cookies for the class (supported for HTTPClient, RESTClient and SOAPClient only). |
DefDeriveKeyIterations | Specifies the default key derivation algorithm iteration count. |
EnableClientSideSSLFFDHE | Enables or disables finite field DHE key exchange support in TLS clients. |
GlobalCookies | Gets or sets global cookies for all the HTTP transports. |
HttpUserAgent | Specifies the user agent name to be used by all HTTP clients. |
LogDestination | Specifies the debug log destination. |
LogDetails | Specifies the debug log details to dump. |
LogFile | Specifies the debug log filename. |
LogFilters | Specifies the debug log filters. |
LogFlushMode | Specifies the log flush mode. |
LogLevel | Specifies the debug log level. |
LogMaxEventCount | Specifies the maximum number of events to cache before further action is taken. |
LogRotationMode | Specifies the log rotation mode. |
MaxASN1BufferLength | Specifies the maximal allowed length for ASN.1 primitive tag data. |
MaxASN1TreeDepth | Specifies the maximal depth for processed ASN.1 trees. |
OCSPHashAlgorithm | Specifies the hash algorithm to be used to identify certificates in OCSP requests. |
Tag | Allows to store any custom data. |
UseSharedSystemStorages | Specifies whether the validation engine should use a global per-process copy of the system certificate stores. |
UseSystemOAEPAndPSS | Enforces or disables the use of system-driven RSA OAEP and PSS computations. |
UseSystemRandom | Enables or disables the use of the OS PRNG. |
ExternalCryptoAsyncDocumentID Property (DCAuth Class)
Specifies the document ID for SignAsyncEnd() call Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch.
Syntax
QString GetExternalCryptoAsyncDocumentID();
int SetExternalCryptoAsyncDocumentID(QString qsExternalCryptoAsyncDocumentID);
Default Value
""
Remarks
Specifies the document ID for SignAsyncEnd() call
Use this property when working with multi-signature DCAuth requests and responses to uniquely identify documents signed within a larger batch. This value helps ASiCSigner identify the correct signature in the returned batch of responses. If using batched requests, make sure to set this property to the same value on both pre-signing (SignAsyncBegin) and completion (SignAsyncEnd) stages.
Data Type
String
ExternalCryptoCustomParams Property (DCAuth Class)
Custom parameters to be passed to the signing service (uninterpreted).
Syntax
QString GetExternalCryptoCustomParams();
int SetExternalCryptoCustomParams(QString qsExternalCryptoCustomParams);
Default Value
""
Remarks
Custom parameters to be passed to the signing service (uninterpreted).
This property is not available at design time.
Data Type
String
ExternalCryptoData Property (DCAuth Class)
Additional data to be included in the async state and mirrored back by the requestor.
Syntax
QString GetExternalCryptoData();
int SetExternalCryptoData(QString qsExternalCryptoData);
Default Value
""
Remarks
Additional data to be included in the async state and mirrored back by the requestor
This property is not available at design time.
Data Type
String
ExternalCryptoExternalHashCalculation Property (DCAuth Class)
Specifies whether the message hash is to be calculated at the external endpoint.
Syntax
bool GetExternalCryptoExternalHashCalculation();
int SetExternalCryptoExternalHashCalculation(bool bExternalCryptoExternalHashCalculation);
Default Value
false
Remarks
Specifies whether the message hash is to be calculated at the external endpoint. Please note that this mode is not supported by all components. In particular, components operating with larger objects (PDFSigner, CAdESSigner, XAdESSigner) do not support it.
Data Type
Boolean
ExternalCryptoHashAlgorithm Property (DCAuth Class)
Specifies the request's signature hash algorithm.
Syntax
QString GetExternalCryptoHashAlgorithm();
int SetExternalCryptoHashAlgorithm(QString qsExternalCryptoHashAlgorithm);
Default Value
"SHA256"
Remarks
Specifies the request's signature hash algorithm.
SB_HASH_ALGORITHM_SHA1 | SHA1 | |
SB_HASH_ALGORITHM_SHA224 | SHA224 | |
SB_HASH_ALGORITHM_SHA256 | SHA256 | |
SB_HASH_ALGORITHM_SHA384 | SHA384 | |
SB_HASH_ALGORITHM_SHA512 | SHA512 | |
SB_HASH_ALGORITHM_MD2 | MD2 | |
SB_HASH_ALGORITHM_MD4 | MD4 | |
SB_HASH_ALGORITHM_MD5 | MD5 | |
SB_HASH_ALGORITHM_RIPEMD160 | RIPEMD160 | |
SB_HASH_ALGORITHM_CRC32 | CRC32 | |
SB_HASH_ALGORITHM_SSL3 | SSL3 | |
SB_HASH_ALGORITHM_GOST_R3411_1994 | GOST1994 | |
SB_HASH_ALGORITHM_WHIRLPOOL | WHIRLPOOL | |
SB_HASH_ALGORITHM_POLY1305 | POLY1305 | |
SB_HASH_ALGORITHM_SHA3_224 | SHA3_224 | |
SB_HASH_ALGORITHM_SHA3_256 | SHA3_256 | |
SB_HASH_ALGORITHM_SHA3_384 | SHA3_384 | |
SB_HASH_ALGORITHM_SHA3_512 | SHA3_512 | |
SB_HASH_ALGORITHM_BLAKE2S_128 | BLAKE2S_128 | |
SB_HASH_ALGORITHM_BLAKE2S_160 | BLAKE2S_160 | |
SB_HASH_ALGORITHM_BLAKE2S_224 | BLAKE2S_224 | |
SB_HASH_ALGORITHM_BLAKE2S_256 | BLAKE2S_256 | |
SB_HASH_ALGORITHM_BLAKE2B_160 | BLAKE2B_160 | |
SB_HASH_ALGORITHM_BLAKE2B_256 | BLAKE2B_256 | |
SB_HASH_ALGORITHM_BLAKE2B_384 | BLAKE2B_384 | |
SB_HASH_ALGORITHM_BLAKE2B_512 | BLAKE2B_512 | |
SB_HASH_ALGORITHM_SHAKE_128 | SHAKE_128 | |
SB_HASH_ALGORITHM_SHAKE_256 | SHAKE_256 | |
SB_HASH_ALGORITHM_SHAKE_128_LEN | SHAKE_128_LEN | |
SB_HASH_ALGORITHM_SHAKE_256_LEN | SHAKE_256_LEN |
Data Type
String
ExternalCryptoKeyID Property (DCAuth Class)
The ID of the pre-shared key used for DC request authentication.
Syntax
QString GetExternalCryptoKeyID();
int SetExternalCryptoKeyID(QString qsExternalCryptoKeyID);
Default Value
""
Remarks
The ID of the pre-shared key used for DC request authentication.
Asynchronous DCAuth-driven communication requires that parties authenticate each other with a secret pre-shared cryptographic key. This provides extra protection layer for the protocol and diminishes the risk of private key becoming abused by foreign parties. Use this property to provide the pre-shared key identifier, and use ExternalCryptoKeySecret to pass the key itself.
The same KeyID/KeySecret pair should be used on the DCAuth side for the signing requests to be accepted.
Note: The KeyID/KeySecret scheme is very similar to the AuthKey scheme used in various Cloud service providers to authenticate users.
Example:
signer.ExternalCrypto.KeyID = "MainSigningKey";
signer.ExternalCrypto.KeySecret = "abcdef0123456789";
Data Type
String
ExternalCryptoKeySecret Property (DCAuth Class)
The pre-shared key used for DC request authentication.
Syntax
QString GetExternalCryptoKeySecret();
int SetExternalCryptoKeySecret(QString qsExternalCryptoKeySecret);
Default Value
""
Remarks
The pre-shared key used for DC request authentication. This key must be set and match the key used by the DCAuth counterpart for the scheme to work.
Read more about configuring authentication in the ExternalCryptoKeyID topic.
Data Type
String
ExternalCryptoMethod Property (DCAuth Class)
Specifies the asynchronous signing method.
Syntax
int GetExternalCryptoMethod();
int SetExternalCryptoMethod(int iExternalCryptoMethod);
Possible Values
ASMD_PKCS1(0),
ASMD_PKCS7(1)
Default Value
0
Remarks
Specifies the asynchronous signing method. This is typically defined by the DC server capabilities and setup.
Available options:
asmdPKCS1 | 0 |
asmdPKCS7 | 1 |
Data Type
Integer
ExternalCryptoMode Property (DCAuth Class)
Specifies the external cryptography mode.
Syntax
int GetExternalCryptoMode();
int SetExternalCryptoMode(int iExternalCryptoMode);
Possible Values
ECM_DEFAULT(0),
ECM_DISABLED(1),
ECM_GENERIC(2),
ECM_DCAUTH(3),
ECM_DCAUTH_JSON(4)
Default Value
0
Remarks
Specifies the external cryptography mode.
Available options:
ecmDefault | The default value (0) |
ecmDisabled | Do not use DC or external signing (1) |
ecmGeneric | Generic external signing with OnExternalSign event (2) |
ecmDCAuth | DCAuth signing (3) |
ecmDCAuthJSON | DCAuth signing in JSON format (4) |
This property is not available at design time.
Data Type
Integer
ExternalCryptoPublicKeyAlgorithm Property (DCAuth Class)
Provide public key algorithm here if the certificate is not available on the pre-signing stage.
Syntax
QString GetExternalCryptoPublicKeyAlgorithm();
int SetExternalCryptoPublicKeyAlgorithm(QString qsExternalCryptoPublicKeyAlgorithm);
Default Value
""
Remarks
Provide public key algorithm here if the certificate is not available on the pre-signing stage.
SB_CERT_ALGORITHM_ID_RSA_ENCRYPTION | rsaEncryption | |
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTION | md2withRSAEncryption | |
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTION | md5withRSAEncryption | |
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTION | sha1withRSAEncryption | |
SB_CERT_ALGORITHM_ID_DSA | id-dsa | |
SB_CERT_ALGORITHM_ID_DSA_SHA1 | id-dsa-with-sha1 | |
SB_CERT_ALGORITHM_DH_PUBLIC | dhpublicnumber | |
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTION | sha224WithRSAEncryption | |
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTION | sha256WithRSAEncryption | |
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTION | sha384WithRSAEncryption | |
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTION | sha512WithRSAEncryption | |
SB_CERT_ALGORITHM_ID_RSAPSS | id-RSASSA-PSS | |
SB_CERT_ALGORITHM_ID_RSAOAEP | id-RSAES-OAEP | |
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160 | ripemd160withRSA | |
SB_CERT_ALGORITHM_ID_ELGAMAL | elGamal | |
SB_CERT_ALGORITHM_SHA1_ECDSA | ecdsa-with-SHA1 | |
SB_CERT_ALGORITHM_RECOMMENDED_ECDSA | ecdsa-recommended | |
SB_CERT_ALGORITHM_SHA224_ECDSA | ecdsa-with-SHA224 | |
SB_CERT_ALGORITHM_SHA256_ECDSA | ecdsa-with-SHA256 | |
SB_CERT_ALGORITHM_SHA384_ECDSA | ecdsa-with-SHA384 | |
SB_CERT_ALGORITHM_SHA512_ECDSA | ecdsa-with-SHA512 | |
SB_CERT_ALGORITHM_EC | id-ecPublicKey | |
SB_CERT_ALGORITHM_SPECIFIED_ECDSA | ecdsa-specified | |
SB_CERT_ALGORITHM_GOST_R3410_1994 | id-GostR3410-94 | |
SB_CERT_ALGORITHM_GOST_R3410_2001 | id-GostR3410-2001 | |
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994 | id-GostR3411-94-with-GostR3410-94 | |
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001 | id-GostR3411-94-with-GostR3410-2001 | |
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAIN | ecdsa-plain-SHA1 | |
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAIN | ecdsa-plain-SHA224 | |
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAIN | ecdsa-plain-SHA256 | |
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAIN | ecdsa-plain-SHA384 | |
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAIN | ecdsa-plain-SHA512 | |
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAIN | ecdsa-plain-RIPEMD160 | |
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTION | whirlpoolWithRSAEncryption | |
SB_CERT_ALGORITHM_ID_DSA_SHA224 | id-dsa-with-sha224 | |
SB_CERT_ALGORITHM_ID_DSA_SHA256 | id-dsa-with-sha256 | |
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-sha3-224 | |
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-sha3-256 | |
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-sha3-384 | |
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-sha3-512 | |
SB_CERT_ALGORITHM_SHA3_224_ECDSA | id-ecdsa-with-sha3-224 | |
SB_CERT_ALGORITHM_SHA3_256_ECDSA | id-ecdsa-with-sha3-256 | |
SB_CERT_ALGORITHM_SHA3_384_ECDSA | id-ecdsa-with-sha3-384 | |
SB_CERT_ALGORITHM_SHA3_512_ECDSA | id-ecdsa-with-sha3-512 | |
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAIN | id-ecdsa-plain-with-sha3-224 | |
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAIN | id-ecdsa-plain-with-sha3-256 | |
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAIN | id-ecdsa-plain-with-sha3-384 | |
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAIN | id-ecdsa-plain-with-sha3-512 | |
SB_CERT_ALGORITHM_ID_DSA_SHA3_224 | id-dsa-with-sha3-224 | |
SB_CERT_ALGORITHM_ID_DSA_SHA3_256 | id-dsa-with-sha3-256 | |
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2s128 | |
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2s160 | |
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2s224 | |
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2s256 | |
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2b160 | |
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2b256 | |
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2b384 | |
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTION | id-rsassa-pkcs1-v1_5-with-blake2b512 | |
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA | id-ecdsa-with-blake2s128 | |
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA | id-ecdsa-with-blake2s160 | |
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA | id-ecdsa-with-blake2s224 | |
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA | id-ecdsa-with-blake2s256 | |
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA | id-ecdsa-with-blake2b160 | |
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA | id-ecdsa-with-blake2b256 | |
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA | id-ecdsa-with-blake2b384 | |
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA | id-ecdsa-with-blake2b512 | |
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAIN | id-ecdsa-plain-with-blake2s128 | |
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAIN | id-ecdsa-plain-with-blake2s160 | |
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAIN | id-ecdsa-plain-with-blake2s224 | |
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAIN | id-ecdsa-plain-with-blake2s256 | |
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAIN | id-ecdsa-plain-with-blake2b160 | |
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAIN | id-ecdsa-plain-with-blake2b256 | |
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAIN | id-ecdsa-plain-with-blake2b384 | |
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAIN | id-ecdsa-plain-with-blake2b512 | |
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224 | id-dsa-with-blake2s224 | |
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256 | id-dsa-with-blake2s256 | |
SB_CERT_ALGORITHM_EDDSA_ED25519 | id-Ed25519 | |
SB_CERT_ALGORITHM_EDDSA_ED448 | id-Ed448 | |
SB_CERT_ALGORITHM_EDDSA_ED25519_PH | id-Ed25519ph | |
SB_CERT_ALGORITHM_EDDSA_ED448_PH | id-Ed448ph | |
SB_CERT_ALGORITHM_EDDSA | id-EdDSA | |
SB_CERT_ALGORITHM_EDDSA_SIGNATURE | id-EdDSA-sig |
Data Type
String
FIPSMode Property (DCAuth Class)
Reserved.
Syntax
bool GetFIPSMode();
int SetFIPSMode(bool bFIPSMode);
Default Value
false
Remarks
This property is reserved for future use.
Data Type
Boolean
Input Property (DCAuth Class)
Contains the signing request to process.
Syntax
QString GetInput();
int SetInput(QString qsInput);
Default Value
""
Remarks
Assign the request you received from the counterparty to this property before calling the ProcessRequest method. Use Output to read the resulting signature response after ProcessRequest completes.
Data Type
String
InputEncoding Property (DCAuth Class)
Specifies request encoding.
Syntax
int GetInputEncoding();
int SetInputEncoding(int iInputEncoding);
Possible Values
ENC_NONE(0),
ENC_AUTO(1),
ENC_BASE_64(2)
Default Value
0
Remarks
Use this property to specify the encoding to expect the requests to be in.
Data Type
Integer
KeyId Property (DCAuth Class)
Specifies the KeyID of the pre-shared authentication key.
Syntax
QString GetKeyId();
int SetKeyId(QString qsKeyId);
Default Value
""
Remarks
If processing requests from a single known party, assign the Id of the key you pre-shared with them to this property, and the key itself to the KeySecret property. If you expect to receive requests from many parties with different authentication keys, use KeySecretNeeded event instead.
Data Type
String
KeySecret Property (DCAuth Class)
The pre-shared authentication key.
Syntax
QString GetKeySecret();
int SetKeySecret(QString qsKeySecret);
Default Value
""
Remarks
If processing requests from a single known party, assign the key you pre-shared with them to this property. Use KeyId property to assign the ID of that key. If you expect to receive requests from many parties with different authentication keys, use KeySecretNeeded event instead.
Data Type
String
Output Property (DCAuth Class)
Contains the output of the request processing.
Syntax
QString GetOutput();
Default Value
""
Remarks
When ProcessRequest method completes it saves the processing output to this property. The output typically contains the response to be sent back to the requestor.
This property is read-only.
Data Type
String
OutputEncoding Property (DCAuth Class)
Specifies response encoding.
Syntax
int GetOutputEncoding();
int SetOutputEncoding(int iOutputEncoding);
Possible Values
ENC_NONE(0),
ENC_AUTO(1),
ENC_BASE_64(2)
Default Value
0
Remarks
Use this property to specify the encoding you want the response to be produced in.
Data Type
Integer
Profile Property (DCAuth Class)
Specifies a pre-defined profile to apply when creating the signature.
Syntax
QString GetProfile();
int SetProfile(QString qsProfile);
Default Value
""
Remarks
Advanced signatures come in many variants, which are often defined by parties that needs to process them or by local standards. SecureBlackbox profiles are sets of pre-defined configurations which correspond to particular signature variants. By specifying a profile, you are pre-configuring the component to make it produce the signature that matches the configuration corresponding to that profile.
Data Type
String
SigningCertBytes Property (DCAuth Class)
Returns raw certificate data in DER format.
Syntax
QByteArray GetSigningCertBytes();
Remarks
Returns raw certificate data in DER format.
This property is read-only and not available at design time.
Data Type
Byte Array
SigningCertHandle Property (DCAuth Class)
Allows to get or set a 'handle', a unique identifier of the underlying property object.
Syntax
qint64 GetSigningCertHandle();
int SetSigningCertHandle(qint64 lSigningCertHandle);
Default Value
0
Remarks
Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.
When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object
after such operation.
pdfSigner.setSigningCertHandle(certMgr.getCertHandle());
This property is not available at design time.
Data Type
Long64
StorageId Property (DCAuth Class)
Specifies the signing certificate residing in an alternative location.
Syntax
QString GetStorageId();
int SetStorageId(QString qsStorageId);
Default Value
""
Remarks
Use this property to specify the signing certificate contained on alternative media, such as a hardware device or in a system certificate store.
Example 1: The certificate resides on a PKCS#11 device
pkcs11://user:pin@/c:/windows/system32/pkcsdriver.dll?slot=0&readonly=1
Example 2: The certificate resides in a system store
system://localmachine@/?store=MY
You can use the following URI modifiers to provide more accurate specifiers for the needed certificate:
- cn: the common name of the certificate subject.
- keyid: the unique identifier included in subject key identifier extension of the certificate.
- keyusage: a comma-separated list of enabled (+) or disabled (-) key usages. The following usages are supported: signature, nonrepudiation, keyencipherment, dataencipherment, keyagreement, keycertsign, crlsign, encipheronly, decipheronly, serverauth, clientauth, codesigning, emailprotection, timestamping, ocspsigning, smartcardlogon, keypurposeclientauth, keypurposekdc.
- fingerprint: the fingerprint of the certificate.
Example 3: selecting the certificate with a given fingerprint:
pkcs11://user:pin@/c:/windows/system32/pkcsdriver.dll?slot=0&readonly=1&fingerprint=001122334455667788aabbccddeeff0011223344
Data Type
String
Config Method (DCAuth Class)
Sets or retrieves a configuration setting.
Syntax
QString Config(const QString& qsConfigurationString);
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.
Error Handling
This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
DoAction Method (DCAuth Class)
Performs an additional action.
Syntax
QString DoAction(const QString& qsActionID, const QString& qsActionParams);
Remarks
DoAction is a generic method available in every class. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.
The unique identifier of the action is provided in ActionID parameter. ActionParams contains a list of parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....
Error Handling
This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
ProcessRequest Method (DCAuth Class)
Processes the request.
Syntax
int ProcessRequest();
Remarks
Use this method to process the request, sign the hashes, and produce the response. This is the main method of the class. Note that a single request received from the counterparty may contain more than one signature request. This method processes them all, reporting each atomic signature request with SignRequest and SignRequestCompleted events. Before calling this method, make sure you assign the request content to Input. Upon completion, read the response (containing all the signatures) from Output property.
Error Handling
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)
CustomParametersReceived Event (DCAuth Class)
Passes custom request parameters to the application.
Syntax
class DCAuthCustomParametersReceivedEventParams { public: const QString &Value(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void CustomParametersReceived(DCAuthCustomParametersReceivedEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireCustomParametersReceived(DCAuthCustomParametersReceivedEventParams *e) {...}
Remarks
Subscribe to this event to access custom signing parameters supplied by the signer in their request. The Value string contains the parameters as included by the requestor.
Error Event (DCAuth Class)
Reports information about errors during request processing or signing.
Syntax
class DCAuthErrorEventParams { public: int ErrorCode(); const QString &Description(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void Error(DCAuthErrorEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireError(DCAuthErrorEventParams *e) {...}
Remarks
The event is fired if an error occurs during the request processing. Use the ErrorCode and Description parameters to get the details.
ExternalSign Event (DCAuth Class)
Handles remote or external signing initiated by the SignExternal method or other source.
Syntax
class DCAuthExternalSignEventParams { public: const QString &OperationId(); const QString &HashAlgorithm(); const QString &Pars(); const QString &Data(); const QString &SignedData(); void SetSignedData(const QString &qsSignedData); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void ExternalSign(DCAuthExternalSignEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireExternalSign(DCAuthExternalSignEventParams *e) {...}
Remarks
Assign a handler to this event if you need to delegate a low-level signing operation to an external, remote, or custom signing engine. Depending on the settings, the handler will receive a hashed or unhashed value to be signed.
The event handler must pass the value of Data to the signer, obtain the signature, and pass it back to the component via SignedData parameter.
OperationId provides a comment about the operation and its origin. It depends on the exact component being used, and may be empty. HashAlgorithm specifies the hash algorithm being used for the operation, and Pars contain algorithm-dependent parameters.
The component uses base16 (hex) encoding for Data, SignedData, and Pars parameters. If your signing engine uses a different input and output encoding, you may need to decode and/or encode the data before and/or after the signing.
A sample MD5 hash encoded in base16: a0dee2a0382afbb09120ffa7ccd8a152 - lower case base16 A0DEE2A0382AFBB09120FFA7CCD8A152 - upper case base16
A sample event handler that uses a .NET RSACryptoServiceProvider class may look like the following:
signer.OnExternalSign += (s, e) =>
{
var cert = new X509Certificate2("cert.pfx", "", X509KeyStorageFlags.Exportable);
var key = (RSACryptoServiceProvider)cert.PrivateKey;
var dataToSign = e.Data.FromBase16String();
var signedData = key.SignHash(dataToSign, "2.16.840.1.101.3.4.2.1");
e.SignedData = signedData.ToBase16String();
};
KeySecretNeeded Event (DCAuth Class)
Requests the key secret from the application.
Syntax
class DCAuthKeySecretNeededEventParams { public: const QString &KeyId(); const QString &KeySecret(); void SetKeySecret(const QString &qsKeySecret); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void KeySecretNeeded(DCAuthKeySecretNeededEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireKeySecretNeeded(DCAuthKeySecretNeededEventParams *e) {...}
Remarks
Subscribe to this event to pass the key secret (a pre-shared request authentication code) to the signing component when it is needed. The authentication combination consists of the KeyId, a non-secret unique key identifier, and the KeySecret, shared by the parties, which should be kept private. This event is an alternative for KeySecret property. Use it when you expect to process requests from requestors with different KeyIds and secrets. If you only expect to receive requests from a single requestor with a known KeyId, providing the key secret via KeyId and KeySecret properties would be an easier route.
Notification Event (DCAuth Class)
This event notifies the application about an underlying control flow event.
Syntax
class DCAuthNotificationEventParams { public: const QString &EventID(); const QString &EventParam(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void Notification(DCAuthNotificationEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireNotification(DCAuthNotificationEventParams *e) {...}
Remarks
The class fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.
The unique identifier of the event is provided in EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.
ParameterReceived Event (DCAuth Class)
Passes a standard request parameter to the user code.
Syntax
class DCAuthParameterReceivedEventParams { public: const QString &Name(); const QString &Value(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void ParameterReceived(DCAuthParameterReceivedEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireParameterReceived(DCAuthParameterReceivedEventParams *e) {...}
Remarks
This event is fired when one of 'standard' protocol parameters has been found in the request: - SessionID - DataURL - GoURL - Token - PKCS11Libraries - AllowFileStorage - AllowTokenStorage - AllowWindowsStorage - AllowOSStorage Parameters are reported one-by-one upon being processed.
SignRequest Event (DCAuth Class)
This event signifies the processing of an atomic signing request.
Syntax
class DCAuthSignRequestEventParams { public: const QByteArray &Hash(); const QString &Username(); bool Allow(); void SetAllow(bool bAllow); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void SignRequest(DCAuthSignRequestEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireSignRequest(DCAuthSignRequestEventParams *e) {...}
Remarks
Subscribe to this event to be notified of every signature request processed by the DC server. Note that any one request coming from the requestor may contain multiple individual signature requests (so-called 'batching'). This event is a good mechanism to track signature requests for accountability purposes, and provide basic access control over the signing operations. The Hash parameter contains the hash that is going to be signed. Username contains the HTTP user name of the connected user. Set Allow to false to stop the request from being served. Use the SignRequestCompleted event to track completion of the initiated operation.
SignRequestCompleted Event (DCAuth Class)
This event signifies completion of the processing of an atomic signing request.
Syntax
class DCAuthSignRequestCompletedEventParams { public: const QByteArray &Hash(); const QString &Username(); const QByteArray &Signature(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void SignRequestCompleted(DCAuthSignRequestCompletedEventParams *e);
// Or, subclass DCAuth and override this emitter function. virtual int FireSignRequestCompleted(DCAuthSignRequestCompletedEventParams *e) {...}
Remarks
Use this event to track completion of signing request processing. The Hash parameter contains the hash that is signed, as supplied by the requestor, and the Signature parameter contains the resulting cryptographic signature. The Username parameter matches the parameter in SignRequest event.
Configuration Settings (DCAuth Class)
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.DCAuth Configuration Settings | ||||||||||||||||||||||||||||||
DataURL: (obsolete) The DataURL parameter to pass to the signer.(obsolete) The DataURL parameter to pass to the signer. | ||||||||||||||||||||||||||||||
GoURL: (obsolete) The GoURL parameter to pass to the signer.(obsolete) The GoURL parameter to pass to the signer. | ||||||||||||||||||||||||||||||
RequireDefinedSignCert: (obsolete) The RequireDefinedSignCert parameter to pass to the signer.(obsolete) The RequireDefinedSignCert parameter to pass to the signer. | ||||||||||||||||||||||||||||||
SchemeParams:
The algorithm scheme parameters to employ.Use this property to specify the parameters of the algorithm scheme if needed.
TBD |
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SessionID: (obsolete) The SessionID parameter to pass to the signer.(obsolete) The SessionID parameter to pass to the signer. | ||||||||||||||||||||||||||||||
TokenName: The TokenName parameter to pass to the signer.(obsolete) The TokenName parameter to pass to the signer. | ||||||||||||||||||||||||||||||
TokensLibraries: (obsolete) The TokensLibraries parameter to pass to the signer.(obsolete) The TokensLibraries parameter to pass to the signer. | ||||||||||||||||||||||||||||||
Base Configuration Settings | ||||||||||||||||||||||||||||||
CheckKeyIntegrityBeforeUse:
Enables or disable private key integrity check before use.This global property enables or disables private key material check before each signing operation. This slows down performance a bit,
but prevents a selection of attacks on RSA keys where keys with unknown origins are used.
You can switch this property off to improve performance if your project only uses known, good private keys. |
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CookieCaching:
Specifies whether a cookie cache should be used for HTTP(S) transports.Set this property to enable or disable cookies caching for the class.
Supported values are:
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Cookies: Gets or sets local cookies for the class (supported for HTTPClient, RESTClient and SOAPClient only).Use this property to get cookies from the internal cookie storage of the class and/or restore them back between application sessions. | ||||||||||||||||||||||||||||||
DefDeriveKeyIterations: Specifies the default key derivation algorithm iteration count.This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided. | ||||||||||||||||||||||||||||||
EnableClientSideSSLFFDHE:
Enables or disables finite field DHE key exchange support in TLS clients.This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower
algorithm if compared to EC DHE; enabling it may result in slower connections.
This setting only applies to sessions negotiated with TLS version 1.3. |
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GlobalCookies: Gets or sets global cookies for all the HTTP transports.Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the classes that have its CookieCaching property set to "global". | ||||||||||||||||||||||||||||||
HttpUserAgent: Specifies the user agent name to be used by all HTTP clients.This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other classes. | ||||||||||||||||||||||||||||||
LogDestination:
Specifies the debug log destination.Contains a comma-separated list of values that specifies where debug log should be dumped.
Supported values are:
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LogDetails:
Specifies the debug log details to dump.Contains a comma-separated list of values that specifies which debug log details to dump.
Supported values are:
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LogFile: Specifies the debug log filename.Use this property to provide a path to the log file. | ||||||||||||||||||||||||||||||
LogFilters:
Specifies the debug log filters.Contains a comma-separated list of value pairs ("name:value") that describe filters.
Supported filter names are:
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LogFlushMode:
Specifies the log flush mode.Use this property to set the log flush mode. The following values are defined:
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LogLevel:
Specifies the debug log level.Use this property to provide the desired debug log level.
Supported values are:
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LogMaxEventCount:
Specifies the maximum number of events to cache before further action is taken.Use this property to specify the log event number threshold. This threshold may have different effects,
depending on the rotation setting and/or the flush mode.
The default value of this setting is 100. |
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LogRotationMode:
Specifies the log rotation mode.Use this property to set the log rotation mode. The following values are defined:
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MaxASN1BufferLength: Specifies the maximal allowed length for ASN.1 primitive tag data.This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks. | ||||||||||||||||||||||||||||||
MaxASN1TreeDepth: Specifies the maximal depth for processed ASN.1 trees.This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks. | ||||||||||||||||||||||||||||||
OCSPHashAlgorithm: Specifies the hash algorithm to be used to identify certificates in OCSP requests.This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful. | ||||||||||||||||||||||||||||||
Tag: Allows to store any custom data.Use this config property to store any custom data. | ||||||||||||||||||||||||||||||
UseSharedSystemStorages: Specifies whether the validation engine should use a global per-process copy of the system certificate stores.Set this global property to false to make each validation run use its own copy of system certificate stores. | ||||||||||||||||||||||||||||||
UseSystemOAEPAndPSS:
Enforces or disables the use of system-driven RSA OAEP and PSS computations.This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable.
If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations
using its own OAEP/PSS implementation.
This setting only applies to certificates originating from a Windows system store. |
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UseSystemRandom: Enables or disables the use of the OS PRNG.Use this global property to enable or disable the use of operating system-driven pseudorandom number generation. |