CmsGetSigDataDigest Method

Extract the message digest from a signed-data CMS object file and verify the signature.

Namespace: CryptoSysPKI
Assembly: diCrSysPKINet (in diCrSysPKINet.dll) Version: 23.0.0.30549 (23.1.0.0)

Syntax

public static string GetSigDataDigest(
	string inputFile,
	string certFile
)

Public Shared Function GetSigDataDigest ( 
	inputFile As String,
	certFile As String
) As String

inputFile String: name of file containing CMS signed-data object
certFile String: an (optional) X.509 certificate file to be used to identify the signer

String
Hash value in hex format or an empty string if error

Remarks

If no certificate is given, it will use the first valid SignerInfo and certificate pair it finds in the SignedData. RSASSA-PKCS1V1_5 only.