# DSA Module

The DSA (Digital Signature Algorithm) module enables users to generate DSA hash signatures.

## Syntax

```text
IPWorksEncrypt.DSA
```

## Remarks

The DSA (Digital Signature Algorithm) class enables users to generate DSA hash signatures.

To begin you must either specify an existing key or create a new key. Existing private keys may be specified by setting [Key](#key-property-dsa-module). To create a new key call [CreateKey](#createkey-method-dsa-module). Alternatively an existing certificate may be specified by setting [Certificate](#certificate-property-dsa-module)

**Signing**

To sign data first set [Key](#key-property-dsa-module) or [Certificate](#certificate-property-dsa-module). Select the input file by setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module). Next call [Sign](#sign-method-dsa-module). The [Sign](#sign-method-dsa-module) method will automatically compute the hash, and then sign the hash with the specified key.

Send the public key (see [CreateKey](#createkey-method-dsa-module) for details), file, and [HashSignature](#hashsignature-property-dsa-module) to the recipient.

To sign a hash without recomputing the hash simply set [HashValue](#hashvalue-property-dsa-module) to the pre-computed hash value before calling [Sign](#sign-method-dsa-module).

**Signature Verification**

To verify a signature specify the input data using [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module). Set [SignerKey](#signerkey-property-dsa-module) or [SignerCert](#signercert-property-dsa-module). Next set [HashSignature](#hashsignature-property-dsa-module) and call [VerifySignature](#verifysignature-method-dsa-module). The [VerifySignature](#verifysignature-method-dsa-module) method will return True if the signature was successfully verified.

To verify a hash signature without recomputing the hash simply set [HashValue](#hashvalue-property-dsa-module) to the pre-computed hash value before calling [VerifySignature](#verifysignature-method-dsa-module).

**Hash Notes**

The class will determine whether or not to recompute the hash based on the properties that are set. If a file is specified by [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module), the hash will be recomputed when calling [Sign](#sign-method-dsa-module) or [VerifySignature](#verifysignature-method-dsa-module). If the [HashValue](#hashvalue-property-dsa-module) property is set, the class will only sign the hash or verify the hash signature. Setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module) clears the [HashValue](#hashvalue-property-dsa-module) property. Setting the [HashValue](#hashvalue-property-dsa-module) property clears the input file selection.

**DSA Key Notes**

A DSA key is made up of a number of individual parameters. When calling [CreateKey](#createkey-method-dsa-module) the [key](#key-property-dsa-module) property is populated with a new private and public key.

After calling [Sign](#sign-method-dsa-module) the public key must be sent to the recipient along with [HashSignature](#hashsignature-property-dsa-module) so they may perform signature verification. Likewise you must obtain the public key along with [HashSignature](#hashsignature-property-dsa-module) in order to perform signature verification.

The public key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both signature creation and verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY
- KeyX

 The class also include the KeyPrivateKey property which holds the PEM formatted private key for ease of use. This is helpful for storing the private key more easily..

## Property List

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

|  |  |
| --- | --- |
| [Certificate](#certificate-property-dsa-module) | The certificate used for signing. |
| [HashAlgorithm](#hashalgorithm-property-dsa-module) | The hash algorithm used for hash computation. |
| [HashSignature](#hashsignature-property-dsa-module) | The hash signature. |
| [HashValue](#hashvalue-property-dsa-module) | The hash value of the data. |
| [InputFile](#inputfile-property-dsa-module) | The file to process. |
| [InputMessage](#inputmessage-property-dsa-module) | The message to process. |
| [Key](#key-property-dsa-module) | The DSA key. |
| [SignerCert](#signercert-property-dsa-module) | The certificate used for signature verification. |
| [SignerKey](#signerkey-property-dsa-module) | The public key used to verify the signature. |
| [UseHex](#usehex-property-dsa-module) | Whether HashValue and HashSignature are hex encoded. |

## Method List

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

|  |  |
| --- | --- |
| [Config](#config-method-dsa-module) | Sets or retrieves a configuration setting. |
| [CreateKey](#createkey-method-dsa-module) | Creates a new key. |
| [Reset](#reset-method-dsa-module) | Resets the module. |
| [Sign](#sign-method-dsa-module) | Creates a hash signature. |
| [VerifySignature](#verifysignature-method-dsa-module) | Verifies the signature for the specified data. |

## Event List

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

|  |  |
| --- | --- |
| [Error](#error-event-dsa-module) | Fired when information is available about errors during data delivery. |
| [Progress](#progress-event-dsa-module) | Fired as progress is made. |

## Config Settings

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

|  |  |
| --- | --- |
| [HashSignatureFormat](#HashSignatureFormat) | The format of the HashSignature. |
| [KeyFormat](#KeyFormat) | How the public and private key are formatted. |
| [KeySize](#KeySize) | The size, in bits, of the secret key. |
| [BuildInfo](#BuildInfo) | Information about the product's build. |
| [CodePage](#CodePage) | The system code page used for Unicode to Multibyte translations. |
| [LicenseInfo](#LicenseInfo) | Information about the current license. |
| [MaskSensitiveData](#MaskSensitiveData) | Whether sensitive data is masked in log messages. |
| [UseInternalSecurityAPI](#UseInternalSecurityAPI) | Whether or not to use the system security libraries or an internal implementation. |

# Certificate Property ([DSA](#dsa-module) Module)

The certificate used for signing.

## Syntax

```text
public var certificate: Certificate {
  get {...}
  set {...}
}
```

## Default Value

False

## Remarks

This property specifies a certificate with private key.

This may be set instead of [Key](#key-property-dsa-module). This allows a [Certificate](#certificate-type) object to be used instead of a [DSAKey](#dsakey-type) object. This certificate is used when calling [Sign](#sign-method-dsa-module). The specified certificate must have a private key.

If both this property and [Key](#key-property-dsa-module) are specified, [Key](#key-property-dsa-module) will be used and this property will be ignored.

# HashAlgorithm Property ([DSA](#dsa-module) Module)

The hash algorithm used for hash computation.

## Syntax

```text
public var hashAlgorithm: DSAHashAlgorithms {
  get {...}
  set {...}
}
public enum DSAHashAlgorithms: Int32 {
  case dhaSHA1 = 0
  case dhaSHA224 = 1
  case dhaSHA256 = 2
  case dhaSHA384 = 3
  case dhaSHA512 = 4
  case dhaRIPEMD160 = 5
}
```

## Default Value

2

## Remarks

This property specifies the hash algorithm used for hash computation. This is only applicable when calling [Sign](#sign-method-dsa-module) or [VerifySignature](#verifysignature-method-dsa-module) and [HashValue](#hashvalue-property-dsa-module) is computed. Possible values are:

|  |  |
| --- | --- |
| 0 (dhaSHA1) | SHA-1 |
| 1 (dhaSHA224) | SHA-224 |
| 2 (dhaSHA256 - default) | SHA-256 |
| 3 (dhaSHA384) | SHA-384 |
| 4 (dhaSHA512) | SHA-512 |
| 5 (dhaRIPEMD160) | RIPEMD-160 |

# HashSignature Property ([DSA](#dsa-module) Module)

The hash signature.

## Syntax

```text
public var hashSignature: String {
  get {...}
  set {...}
}
public var hashSignatureB: Data {
  get {...}
  set {...}
}
```

## Default Value

""

## Remarks

This property holds the computed hash signature. This is populated after calling [Sign](#sign-method-dsa-module). This must be set before calling [VerifySignature](#verifysignature-method-dsa-module).

# HashValue Property ([DSA](#dsa-module) Module)

The hash value of the data.

## Syntax

```text
public var hashData: String {
  get {...}
  set {...}
}
public var hashDataB: Data {
  get {...}
  set {...}
}
```

## Default Value

""

## Remarks

This property holds the computed hash value for the specified data. This is populated when calling [Sign](#sign-method-dsa-module) or [VerifySignature](#verifysignature-method-dsa-module) when an input file is specified by setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module).

If you know the hash value prior to using the class you may specify the pre-computed hash value here.

**Hash Notes**

The class will determine whether or not to recompute the hash based on the properties that are set. If a file is specified by [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module), the hash will be recomputed when calling [Sign](#sign-method-dsa-module) or [VerifySignature](#verifysignature-method-dsa-module). If the HashValue property is set, the class will only sign the hash or verify the hash signature. Setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module) clears the HashValue property. Setting the HashValue property clears the input file selection.

# InputFile Property ([DSA](#dsa-module) Module)

The file to process.

## Syntax

```text
public var inputFile: String {
  get {...}
  set {...}
}
```

## 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:

- InputFile
- [InputMessage](#inputmessage-property-dsa-module)

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

- OutputFile
- OutputMessage: The output data is written to this property if no other destination is specified.

# InputMessage Property ([DSA](#dsa-module) Module)

The message to process.

## Syntax

```text
public var inputMessage: String {
  get {...}
  set {...}
}
public var inputMessageB: Data {
  get {...}
  set {...}
}
```

## Default Value

""

## Remarks

This property specifies the message 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:

- [InputFile](#inputfile-property-dsa-module)
- InputMessage

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

- OutputFile
- OutputMessage: The output data is written to this property if no other destination is specified.

# Key Property ([DSA](#dsa-module) Module)

The DSA key.

## Syntax

```text
public var key: DSAKey {
  get {...}
  set {...}
}
```

## Default Value

False

## Remarks

This property specifies the DSA key used to create a signature. This property must be set before calling [Sign](#sign-method-dsa-module). Alternatively, a certificate may be specified by setting [Certificate](#certificate-property-dsa-module)

**DSA Key Notes**

A DSA key is made up of a number of individual parameters. When calling [CreateKey](#createkey-method-dsa-module) the [key](#key-property-dsa-module) property is populated with a new private and public key.

After calling [Sign](#sign-method-dsa-module) the public key must be sent to the recipient along with [HashSignature](#hashsignature-property-dsa-module) so they may perform signature verification. Likewise you must obtain the public key along with [HashSignature](#hashsignature-property-dsa-module) in order to perform signature verification.

The public key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both signature creation and verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY
- KeyX

 The class also include the KeyPrivateKey property which holds the PEM formatted private key for ease of use. This is helpful for storing the private key more easily.

# SignerCert Property ([DSA](#dsa-module) Module)

The certificate used for signature verification.

## Syntax

```text
public var signerCert: Certificate {
  get {...}
  set {...}
}
```

## Default Value

False

## Remarks

This property specifies a certificate for signature verification.

This may be set instead of [SignerKey](#signerkey-property-dsa-module). This allows a [Certificate](#certificate-type) object to be used instead of a [DSAKey](#dsakey-type) object. This certificate is used when calling [VerifySignature](#verifysignature-method-dsa-module).

If both this property and [SignerKey](#signerkey-property-dsa-module) are specified, [SignerKey](#signerkey-property-dsa-module) will be used and this property will be ignored.

# SignerKey Property ([DSA](#dsa-module) Module)

The public key used to verify the signature.

## Syntax

```text
public var signerKey: DSAKey {
  get {...}
  set {...}
}
```

## Default Value

False

## Remarks

This property specifies the public key used to verify the signature. This public key corresponds to the private key used when creating the signature. This must be set before calling [VerifySignature](#verifysignature-method-dsa-module). Alternatively, a certificate may be specified by setting [SignerCert](#signercert-property-dsa-module)

**DSA Key Notes**

A DSA key is made up of a number of individual parameters. When calling [CreateKey](#createkey-method-dsa-module) the [key](#key-property-dsa-module) property is populated with a new private and public key.

After calling [Sign](#sign-method-dsa-module) the public key must be sent to the recipient along with [HashSignature](#hashsignature-property-dsa-module) so they may perform signature verification. Likewise you must obtain the public key along with [HashSignature](#hashsignature-property-dsa-module) in order to perform signature verification.

The public key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both signature creation and verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY
- KeyX

 The class also include the KeyPrivateKey property which holds the PEM formatted private key for ease of use. This is helpful for storing the private key more easily.

# UseHex Property ([DSA](#dsa-module) Module)

Whether HashValue and HashSignature are hex encoded.

## Syntax

```text
public var useHex: Bool {
  get {...}
  set {...}
}
```

## Default Value

False

## Remarks

This property specifies whether [HashValue](#hashvalue-property-dsa-module) and [HashSignature](#hashsignature-property-dsa-module) are hex encoded.

If set to True, when [Sign](#sign-method-dsa-module) is called the class will compute the hash for the specified file and populate [HashValue](#hashvalue-property-dsa-module) with the hex encoded hash value. It will then create the hash signature and populate [HashSignature](#hashsignature-property-dsa-module) with the hex encoded hash signature value. If [HashValue](#hashvalue-property-dsa-module) is specified directly, it must be a hex encoded value.

If set to True, when [VerifySignature](#verifysignature-method-dsa-module) is called the class will compute the hash value for the specified file and populate [HashValue](#hashvalue-property-dsa-module) with the hex encoded hash value. It will then hex decode [HashSignature](#hashsignature-property-dsa-module) and verify the signature. [HashSignature](#hashsignature-property-dsa-module) must hold a hex encoded value. If [HashValue](#hashvalue-property-dsa-module) is specified directly, it must be a hex encoded value.

# Config Method ([DSA](#dsa-module) Module)

Sets or retrieves a configuration setting.

## Syntax

```text
public func config(configurationString: String) throws -> String
```

## Remarks

Config is a generic method available in every class. It is used to set and retrieve [configuration settings](#config-settings-dsa-module) 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](#config-settings-dsa-module), you must call *Config("PROPERTY")*. The value will be returned as a string.

# CreateKey Method ([DSA](#dsa-module) Module)

Creates a new key.

## Syntax

```text
public func createKey() throws -> Void
```

## Remarks

This method creates a new public and private key.

**DSA Key Notes**

A DSA key is made up of a number of individual parameters. When calling CreateKey the [key](#key-property-dsa-module) property is populated with a new private and public key.

After calling [Sign](#sign-method-dsa-module) the public key must be sent to the recipient along with [HashSignature](#hashsignature-property-dsa-module) so they may perform signature verification. Likewise you must obtain the public key along with [HashSignature](#hashsignature-property-dsa-module) in order to perform signature verification.

The public key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both signature creation and verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY
- KeyX

 The class also include the KeyPrivateKey property which holds the PEM formatted private key for ease of use. This is helpful for storing the private key more easily.

# Reset Method ([DSA](#dsa-module) Module)

Resets the component.

## Syntax

```text
public func reset() throws -> Void
```

## Remarks

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

# Sign Method ([DSA](#dsa-module) Module)

Creates a hash signature.

## Syntax

```text
public func sign() throws -> Void
```

## Remarks

This method will create a hash signature.

Before calling this method specify the input file by setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module).

A key is required to create the hash signature. You may create a new key by calling [CreateKey](#createkey-method-dsa-module), or specify an existing key pair in [Key](#key-property-dsa-module). Alternatively, a certificate may be specified by setting [Certificate](#certificate-property-dsa-module). When this method is called the class will compute the hash for the specified file and populate [HashValue](#hashvalue-property-dsa-module). It will then create the hash signature using the specified [Key](#key-property-dsa-module) and populate [HashSignature](#hashsignature-property-dsa-module).

To create the hash signature without first computing the hash simply specify [HashValue](#hashvalue-property-dsa-module) before calling this method.

The [Progress](#progress-event-dsa-module) event will fire with updates for the hash computation progress only. The hash signature creation process is quick and does not require progress updates.

# VerifySignature Method ([DSA](#dsa-module) Module)

Verifies the signature for the specified data.

## Syntax

```text
public func verifySignature() throws -> Bool
```

## Remarks

This method will verify a hash signature.

Before calling this method specify the input file by setting [InputFile](#inputfile-property-dsa-module) or [InputMessage](#inputmessage-property-dsa-module).

A public key and the hash signature are required to perform the signature verification. Specify the public key in [SignerKey](#signerkey-property-dsa-module). Alternatively, a certificate may be specified by setting [SignerCert](#signercert-property-dsa-module). Specify the hash signature in [HashSignature](#hashsignature-property-dsa-module).

When this method is called the class will compute the hash for the specified file and populate [HashValue](#hashvalue-property-dsa-module). It will verify the signature using the specified [SignerKey](#signerkey-property-dsa-module) and [HashSignature](#hashsignature-property-dsa-module).

To verify the hash signature without first computing the hash simply specify [HashValue](#hashvalue-property-dsa-module) before calling this method.

The [Progress](#progress-event-dsa-module) event will fire with updates for the hash computation progress only. The hash signature verification process is quick and does not require progress updates.

# Error Event ([DSA](#dsa-module) Module)

Fired when information is available about errors during data delivery.

## Syntax

```text
func onError(errorCode: Int32, description: String)
```

## Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class .

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](#trappable-errors-dsa-module) section.

# Progress Event ([DSA](#dsa-module) Module)

Fired as progress is made.

## Syntax

```text
func onProgress(bytesProcessed: Int64, percentProcessed: Int32)
```

## 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.

# Certificate Type

This is the digital certificate being used.

## Remarks

This type describes the current digital certificate. The certificate may be a public or private key. The fields are used to identify or select certificates.

The following fields are available:

- [EffectiveDate](#Certificate_f_EffectiveDate)

- [ExpirationDate](#Certificate_f_ExpirationDate)

- [ExtendedKeyUsage](#Certificate_f_ExtendedKeyUsage)

- [Fingerprint](#Certificate_f_Fingerprint)

- [FingerprintSHA1](#Certificate_f_FingerprintSHA1)

- [FingerprintSHA256](#Certificate_f_FingerprintSHA256)

- [Issuer](#Certificate_f_Issuer)

- [PrivateKey](#Certificate_f_PrivateKey)

- [PrivateKeyAvailable](#Certificate_f_PrivateKeyAvailable)

- [PrivateKeyContainer](#Certificate_f_PrivateKeyContainer)

- [PublicKey](#Certificate_f_PublicKey)

- [PublicKeyAlgorithm](#Certificate_f_PublicKeyAlgorithm)

- [PublicKeyLength](#Certificate_f_PublicKeyLength)

- [SerialNumber](#Certificate_f_SerialNumber)

- [SignatureAlgorithm](#Certificate_f_SignatureAlgorithm)

- [Store](#Certificate_f_Store)

- [StorePassword](#Certificate_f_StorePassword)

- [StoreType](#Certificate_f_StoreType)

- [SubjectAltNames](#Certificate_f_SubjectAltNames)

- [ThumbprintMD5](#Certificate_f_ThumbprintMD5)

- [ThumbprintSHA1](#Certificate_f_ThumbprintSHA1)

- [ThumbprintSHA256](#Certificate_f_ThumbprintSHA256)

- [Usage](#Certificate_f_Usage)

- [UsageFlags](#Certificate_f_UsageFlags)

- [Version](#Certificate_f_Version)

- [Subject](#Certificate_f_Subject)

- [Encoded](#Certificate_f_Encoded)

## Fields

 **effectiveDate** *String (read-only)*
*Default Value: ""*

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.

 **expirationDate** *String (read-only)*
*Default Value: ""*

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.

 **extendedKeyUsage** *String (read-only)*
*Default Value: ""*

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

 **fingerprint** *String (read-only)*
*Default Value: ""*

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*

 **fingerprintSHA1** *String (read-only)*
*Default Value: ""*

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*

 **fingerprintSHA256** *String (read-only)*
*Default Value: ""*

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*

 **issuer** *String (read-only)*
*Default Value: ""*

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

 **privateKey** *String (read-only)*
*Default Value: ""*

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

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

 **privateKeyAvailable** *Bool (read-only)*
*Default Value: False*

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

 **privateKeyContainer** *String (read-only)*
*Default Value: ""*

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

 **publicKey** *String (read-only)*
*Default Value: ""*

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

 **publicKeyAlgorithm** *String (read-only)*
*Default Value: ""*

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.

 **publicKeyLength** *Int32 (read-only)*
*Default Value: 0*

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

 **serialNumber** *String (read-only)*
*Default Value: ""*

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.

 **signatureAlgorithm** *String (read-only)*
*Default Value: ""*

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.

 **storeB** *Data*
*Default Value: "MY"*

The name of the certificate store for the client certificate.

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

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

 Designations of certificate stores are platform dependent.

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

|  |  |
| --- | --- |
| MY | A certificate store holding personal certificates with their associated private keys. |
| CA | Certifying authority certificates. |
| ROOT | Root 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).

 **store** *String*
*Default Value: "MY"*

The name of the certificate store for the client certificate.

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

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

 Designations of certificate stores are platform dependent.

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

|  |  |
| --- | --- |
| MY | A certificate store holding personal certificates with their associated private keys. |
| CA | Certifying authority certificates. |
| ROOT | Root 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).

 **storePassword** *String*
*Default Value: ""*

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

 **storeType** *CertStoreTypes*
*Default Value: 0*

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:

```csharp
sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11,
                               @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll",
                               "123456", // PIN
                               "CN=cert_subject");
sftp.SSHUser = "test";
sftp.SSHLogon("myhost", 22);
```

```csharp
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);
```

|  |  |
| --- | --- |
| 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, create a new [Certificate](#certificate-type) object and pass cstPKCS11 as the [](#f_StoreType), the full path of the PKCS#11 DLL as the [](#f_Store), and the PIN as the [](#f_StorePassword). Code Example. SSH Authentication with Security Key (without CertMgr): Alternatively, collect the necessary data using the [CertMgr](CertMgr.md#CertMgr) class by calling the [ListStoreCertificates](CertMgr.md#CertMgr_m_ListStoreCertificates) method after setting the corresponding properties accordingly. The certificate information returned in the [CertList](CertMgr.md#CertMgr_e_CertList) event's CertEncoded parameter may be saved for later use. When using a certificate obtained with this approach, pass the previously saved security key information as the [](#f_Store) and set [](#f_StorePassword) to the PIN. Code Example. SSH Authentication with Security Key (with CertMgr): |
| 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. |

 **subjectAltNames** *String (read-only)*
*Default Value: ""*

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

 **thumbprintMD5** *String (read-only)*
*Default Value: ""*

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.

 **thumbprintSHA1** *String (read-only)*
*Default Value: ""*

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.

 **thumbprintSHA256** *String (read-only)*
*Default Value: ""*

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.

 **usage** *String (read-only)*
*Default Value: ""*

The text description of .

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.

 **usageFlags** *Int32 (read-only)*
*Default Value: 0*

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

|  |  |
| --- | --- |
| 0x80 | Digital Signature |
| 0x40 | Non-Repudiation |
| 0x20 | Key Encipherment |
| 0x10 | Data Encipherment |
| 0x08 | Key Agreement |
| 0x04 | Certificate Signing |
| 0x02 | CRL Signing |
| 0x01 | Encipher Only |

Please see the  property for a text representation of .

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

 **version** *String (read-only)*
*Default Value: ""*

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

 **subject** *String*
*Default Value: ""*

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=example@email.com". Common fields and their meanings are as follows:

| Field | Meaning |
| --- | --- |
| CN | Common Name. This is commonly a hostname like www.server.com. |
| O | Organization |
| OU | Organizational Unit |
| L | Locality |
| S | State |
| C | Country |
| E | Email Address |

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

 **encodedB** *Data*
*Default Value: ""*

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

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

 **encoded** *String*
*Default Value: ""*

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

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

## Constructors

*Swift Syntax*

```text
public init()
```

 Creates a instance whose properties can be set.

*Swift Syntax*

```text
public init(encoded: )
```

 Parses * Encoded * as an X.509 public key.

*Swift Syntax*

```text
public init(storeType: , store: , storePassword: , subject: )
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a file containing the certificate store. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the component will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

*Swift Syntax*

```text
public init(storeType: , store: , storePassword: , subject: )
```

 * StoreType * identifies the type of certificate store to use. See for descriptions of the different certificate stores. * Store * is a byte array containing the certificate data. * StorePassword * is the password used to protect the store.

 After the store has been successfully opened, the component will attempt to find the certificate identified by * Subject * . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN). The * Subject * parameter can also take an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load in a "Thumbprint=value" format.

# DSAKey Type

Contains the parameters for the DSA algorithm.

## Remarks

This type is made up of fields that represent the private and public key parameters used by the DSA algorithm.

**DSA Key Notes**

A DSA key is made up of a number of individual parameters. When calling [CreateKey](#createkey-method-dsa-module) the [key](#key-property-dsa-module) property is populated with a new private and public key.

After calling [Sign](#sign-method-dsa-module) the public key must be sent to the recipient along with [HashSignature](#hashsignature-property-dsa-module) so they may perform signature verification. Likewise you must obtain the public key along with [HashSignature](#hashsignature-property-dsa-module) in order to perform signature verification.

The public key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both signature creation and verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key consists of the following parameters:

- KeyP
- KeyQ
- KeyG
- KeyY
- KeyX

 The class also include the KeyPrivateKey property which holds the PEM formatted private key for ease of use. This is helpful for storing the private key more easily.

The following fields are available:

- [G](#DSAKey_f_G)

- [P](#DSAKey_f_P)

- [PrivateKey](#DSAKey_f_PrivateKey)

- [PublicKey](#DSAKey_f_PublicKey)

- [Q](#DSAKey_f_Q)

- [X](#DSAKey_f_X)

- [Y](#DSAKey_f_Y)

## Fields

 **gB** *Data*
*Default Value: ""*

Represents the G parameter for the DSA algorithm.

 **g** *String*
*Default Value: ""*

Represents the G parameter for the DSA algorithm.

 **pB** *Data*
*Default Value: ""*

Represents the P parameter for the DSA algorithm.

 **p** *String*
*Default Value: ""*

Represents the P parameter for the DSA algorithm.

 **privateKey** *String*
*Default Value: ""*

This property is a PEM formatted private key. The purpose of this property is to allow easier management of the private key parameters by using only a single value.

 **publicKey** *String*
*Default Value: ""*

This property is a PEM formatted public key. The purpose of this property is to allow easier management of the public key parameters by using only a single value.

 **qB** *Data*
*Default Value: ""*

Represents the Q parameter for the DSA algorithm.

 **q** *String*
*Default Value: ""*

Represents the Q parameter for the DSA algorithm.

 **xB** *Data*
*Default Value: ""*

Represents the X parameter for the DSA algorithm.

 **x** *String*
*Default Value: ""*

Represents the X parameter for the DSA algorithm.

 **yB** *Data*
*Default Value: ""*

Represents the Y parameter for the DSA algorithm.

 **y** *String*
*Default Value: ""*

Represents the Y parameter for the DSA algorithm.

## Constructors

*Swift Syntax*

```text
public init()
```

 The default constructor creates a new DSAKey instance but does not assign a public or private key.

*Swift Syntax*

```text
public init(p: , q: , g: , y: )
```

 The public key constructor assigns an existing public key.

*Swift Syntax*

```text
public init(p: , q: , g: , y: , x: )
```

 The private key constructor assigns an existing private key.

# Config Settings ([DSA](#dsa-module) Module)

 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](#config-method-dsa-module) method.

### DSA Config Settings

**HashSignatureFormat**: The format of the HashSignature.This setting specifies the format of [HashSignature](#hashsignature-property-dsa-module) when calling [Sign](#sign-method-dsa-module). The way the [HashSignature](#hashsignature-property-dsa-module) parameters are represented can be changed to be interoperable with other implementations. Possible values are:

|  |  |
| --- | --- |
| 0 (Concatenated - default) | Compatible with Windows/.NET |
| 1 (ASN) | Compatible with OpenSSL/Mac/iOS |

 The default value is 0 (Concatenated). This setting is only applicable when calling [Sign](#sign-method-dsa-module). When calling [VerifySignature](#verifysignature-method-dsa-module) the format is automatically determined by the class.

**KeyFormat**: How the public and private key are formatted.This setting controls the format of KeyPublicKey and KeyPrivateKey. By default these properties hold PEM formatted public and private key data. When set to 1 (XML) the keys are stored in a XML format. This only affects the values returned by the class; the actual keys remain the same regardless of this setting. Possible values are:

- 0 (PEM - PKCS#1)
- 1 (XML)
- 2 (PEM - PKCS#8 - default)

 The default value is 2 (PEM - PKCS#8).

**KeySize**: The size, in bits, of the secret key.This specifies the size, in bits, of the secret key. The minimum key size for DSA is 512. The maximum key size is 4096. Note that large values such as 4096 will impact performance. The default value is 1024.

### 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:

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

 The following is a list of valid code page identifiers for Mac OS only:

|  |  |
| --- | --- |
| Identifier | Name |
| 1 | ASCII |
| 2 | NEXTSTEP |
| 3 | JapaneseEUC |
| 4 | UTF8 |
| 5 | ISOLatin1 |
| 6 | Symbol |
| 7 | NonLossyASCII |
| 8 | ShiftJIS |
| 9 | ISOLatin2 |
| 10 | Unicode |
| 11 | WindowsCP1251 |
| 12 | WindowsCP1252 |
| 13 | WindowsCP1253 |
| 14 | WindowsCP1254 |
| 15 | WindowsCP1250 |
| 21 | ISO2022JP |
| 30 | MacOSRoman |
| 10 | UTF16String |
| 0x90000100 | UTF16BigEndian |
| 0x94000100 | UTF16LittleEndian |
| 0x8c000100 | UTF32String |
| 0x98000100 | UTF32BigEndian |
| 0x9c000100 | UTF32LittleEndian |
| 65536 | Proprietary |

**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*.

**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.

 This setting is set to *false* by default on all platforms.

# Trappable Errors ([DSA](#dsa-module) Module)

### DSA Errors

|  |  |
| --- | --- |
| 102 | No Key specified. |
| 104 | Cannot read or write file. |
| 105 | Key parameters incorrect. |
| 106 | Cannot create hash. |
| 113 | Input data or HashValue must be specified. |
| 121 | Invalid certificate. |
| 124 | HashSignature must be specified. |
| 304 | Cannot write file. |
| 305 | Cannot read file. |
| 1201 | Specified DSA parameters are invalid. |
| 1202 | Missing hash value. |
| 1203 | Public key must be specified. |
| 1204 | Key must be specified. |
| 1205 | HashSignature must be specified. |
| 1206 | Invalid key size. |