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CmsQuerySigData Method

Query a CMS signed-data object for selected information.

Namespace: CryptoSysPKI
Assembly: diCrSysPKINet (in diCrSysPKINet.dll) Version: 23.0.0.30549 (23.1.0.0)
Syntax
Copy
public static string QuerySigData(
	string inputFile,
	string query
)

Parameters

inputFile  String
file containing CMS signed-data object
query  String
Query string (case insensitive)

Return Value

String
String containing the result or an empty string if not found or error.
Remarks

Valid queries are:

"version"signedData version (sdVer) value, e.g. "1".
"eContentType"ContentType of the EncapsulatedContentInfo, e.g. "data".
"HASeContent""1" if eContent is present; "0" if not.
"CountOfCertificates"Number of certificates included in the data.
"CountOfSignerInfos"Number of SignerInfos included in the data.
"signerInfoVersion"signerInfo version (siVer) value.
"digestAlgorithm"digestAlgorithm, e.g. "sha1".
"signatureAlgorithm"signatureAlgorithm, e.g. "rsaEncryption".
"signatureValue"Signature value encoded in hex.
"HASsignedAttributes""1" if signedAttributes (authenticatedAttributes) are present; "0" if not.
"DigestOfSignedAttrs"Computed digest over signed attributes, if present, using digestAlgorithm.
"DigestOfeContent"Computed digest over eContent, if present, using digestAlgorithm.
"signingTime"signingTime attribute in format "2005-12-31 23:30:59"
"messageDigest"messageDigest attribute in hexadecimal format, if present
"pssParams"Parameters used for RSA-PSS (if applicable).
"HASsigningCertificate""1" if an ESS signingCertificate is present; "0" if not.
"signingCertHash"certHash value of ESS signing certificate, if present, encoded in hex.
"HASalgorithmProtection""1" if a cmsAlgorithmProtection attribute is present; "0" if not.
By default, the function queries the first signerInfo in the file. To query the Nth signerInfo append "/N" to the query string, e.g. "signerInfoVersion/2" to find the version number of the second signerInfo in the file.
See Also