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.