X509CertCmsVerify (FUN)

FUNCTION X509CertCmsVerify : RTS_IEC_RESULT

Verifies a CMS signature. This function can handle both (detached and attached) signatures. The signers certificate has to be located in the CMS container. Otherwise the verify will fail. The signers certificate is always verified against the trusted certificate store on the PLC.

InOut:

Scope	Name	Type	Comment
Return	X509CertCmsVerify	RTS_IEC_RESULT	ERR_OK if the signature is valid and the signer was trustworthy. ERR_SIGNATURE_MISMATCH if the signature is invalid and / or the signer was not trustworthy. ERR_PARAMETER if the given parameters are not consistent.
Input	hCertStore	RTS_IEC_HANDLE	Handle to the certificate store.
	pCms	POINTER TO RtsByteString	Pointer to a byte string storing the CMS container.
	encoding	RtsCertEncoding	Encoding of the CMS container.
	pInData	POINTER TO RtsByteString	Used only if the signature is detached. In this case this byte string has to store the data to be verified
	pOutData	POINTER TO RtsByteString	Pointer to a byte string where to store the extracted data.