CMSG_SIGNER_INFO structure (wincrypt.h)
The CMSG_SIGNER_INFO structure contains the content of the PKCS #7 defined SignerInfo in signed messages. In decoding a received message, CryptMsgGetParam is called for each signer to get a CMSG_SIGNER_INFO structure.
Syntax
typedef struct _CMSG_SIGNER_INFO {
DWORD dwVersion;
CERT_NAME_BLOB Issuer;
CRYPT_INTEGER_BLOB SerialNumber;
CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
CRYPT_ALGORITHM_IDENTIFIER HashEncryptionAlgorithm;
CRYPT_DATA_BLOB EncryptedHash;
CRYPT_ATTRIBUTES AuthAttrs;
CRYPT_ATTRIBUTES UnauthAttrs;
} CMSG_SIGNER_INFO, *PCMSG_SIGNER_INFO;
Members
dwVersion
The version of this structure.
Issuer
A CERT_NAME_BLOB structure that contains the issuer of a certificate with the public key needed to verify a signature.
SerialNumber
A CRYPT_INTEGER_BLOB structure that contains the serial number of the certificate that contains the public key needed to verify a signature. For more information, see CERT_INFO.
HashAlgorithm
CRYPT_ALGORITHM_IDENTIFIER structure specifying the algorithm used in generating the hash of a message.
HashEncryptionAlgorithm
CRYPT_ALGORITHM_IDENTIFIER structure specifying the algorithm used to encrypt the hash.
EncryptedHash
A CRYPT_DATA_BLOB that contains the encrypted hash of the message, the signature.
AuthAttrs
CRYPT_ATTRIBUTES structure containing authenticated attributes of the signer.
UnauthAttrs
CRYPT_ATTRIBUTES structure containing unauthenticated attributes of the signer.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | wincrypt.h |