TElPublicKeyCrypto.VerifyDetached method

TElPublicKeyCrypto.VerifyDetached

This method verifies detached signature.

Declaration

[C#]
TSBPublicKeyVerificationResult VerifyDetached(byte[] InBuffer, int InIndex, int InSize, byte[] SigBuffer, int SigIndex, int SigSize);
TSBPublicKeyVerificationResult VerifyDetached(System.IO.Stream InStream, System.IO.Stream SigStream, int InCount, int SigCount);

[VB.NET]
Function VerifyDetached(ByVal InBuffer As Byte(), ByVal InIndex As Integer, ByVal InSize As Integer, ByVal SigBuffer As Byte(), ByVal SigIndex As Integer, ByVal SigSize As Integer) As TSBPublicKeyVerificationResult
Function VerifyDetached(ByVal InStream As System.IO.Stream, ByVal SigStream As System.IO.Stream, ByVal InCount As Integer, ByVal SigCount As Integer) As TSBPublicKeyVerificationResult

[Pascal]
function VerifyDetached(InBuffer: pointer; InSize: integer; SigBuffer: pointer; var SigSize: integer): TSBPublicKeyVerificationResult;
function VerifyDetached(InStream, SigStream : TStream; InCount : integer = 0; SigCount : integer = 0): TSBPublicKeyVerificationResult;

[C++]
    TSBPublicKeyVerificationResult VerifyDetached(void * InBuffer, int32_t InSize, void * SigBuffer, int32_t SigSize);
    TSBPublicKeyVerificationResult VerifyDetached(TStream &InStream, TStream &SigStream, int32_t InCount, int32_t SigCount);
    TSBPublicKeyVerificationResult VerifyDetached(TStream *InStream, TStream *SigStream, int32_t InCount, int32_t SigCount);

[Java]
TSBPublicKeyVerificationResult verifyDetached(InputStream InStream, InputStream SigStream, int InCount, int SigCount);
TSBPublicKeyVerificationResult verifyDetached(byte[] InBuffer, int InIndex, int InSize, byte[] SigBuffer, int SigIndex, int SigSize);

Parameters

InBuffer - data buffer to verify
InIndex - offset of actual data from the beginning of the array
InSize - size of input data in bytes
SigBuffer - buffer with signature
SigIndex - signature buffer start offset
SigSize - size of signature data in bytes
InStream - the stream with data to verify.
SigStream - the stream with signature data.
InCount - the number of bytes to be read from data buffer. If this parameter is zero, the whole stream is processed.
Default value is 0.
SigCount - the number of bytes to be read from signature buffer. If this parameter is zero, the whole stream is processed.
Default value is 0.

Return value

Verification result

Possible values:

[.NET] [C++]	[Pascal]	Description
pkvrSuccess = 0	pkvrSuccess	The verification operation was successful (i.e., the signature is valid)
pkvrInvalidSignature = 1	pkvrInvalidSignature	Verification failed, the signature is not valid or the document was corrupted
pkvrKeyNotFound = 2	pkvrKeyNotFound	Verification failed, because the key was not found
pkvrFailure = 3	pkvrFailure	General failure

Description

Use this method to validate a detached signature. You need both original message and a signature value to be able to perform validation.