Table of Contents

Codeunit DSACryptoServiceProvider

ID 1447
Namespace: System.Security.Encryption

Defines a wrapper object to access the cryptographic service provider (CSP) implementation of the DSA algorithm.

Properties

Name Value
Access Public
InherentEntitlements X
InherentPermissions X

Methods

ToXmlString

Creates and returns an XML string representation of the current DSA object.

[NonDebuggable]
procedure ToXmlString(IncludePrivateParameters: Boolean): Text

Parameters

Name Type Description
IncludePrivateParameters Boolean

true to include private parameters; otherwise, false.

Returns

Type Description
Text

An XML string encoding of the current DSA object.

SignData

Computes the hash value of the specified stream using the specified hash algorithm and signs the resulting hash value.

procedure SignData(XmlString: SecretText, DataInStream: InStream, HashAlgorithm: Enum "Hash Algorithm", SignatureOutStream: OutStream)

Parameters

Name Type Description
XmlString SecretText

The XML string containing DSA key information.
DataInStream InStream

The input stream to hash and sign.
HashAlgorithm Enum System.Security.Encryption."Hash Algorithm"

The hash algorithm to use to create the hash value.
SignatureOutStream OutStream

The DSA signature stream for the specified data.

VerifyData

Verifies that a digital signature is valid by calculating the hash value of the specified stream using the specified hash algorithm and comparing it to the provided signature.

procedure VerifyData(XmlString: SecretText, DataInStream: InStream, HashAlgorithm: Enum "Hash Algorithm", SignatureInStream: InStream): Boolean

Parameters

Name Type Description
XmlString SecretText

The XML string containing DSA key information.
DataInStream InStream

The input stream of data that was signed.
HashAlgorithm Enum System.Security.Encryption."Hash Algorithm"

The name of the hash algorithm used to create the hash value of the data.
SignatureInStream InStream

The stream of signature data to be verified.

Returns

Type Description
Boolean

True if the signature is valid; otherwise, false.

See also