CMSG_SIGNER_INFO (Compact 2013)

3/28/2014

This 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
  CERT_NAME_BLOB that contains the issuer of a certificate with the public key needed to verify a signature.

• SerialNumber
  CRYPT_INTEGER_BLOB that contains the serial number of the certificate containing the public key needed to verify a signature. See CERT_INFO for details.

• HashAlgorithm
  CRYPT_ALGORITHM_IDENTIFIER structure that specifies the algorithm used in generating the hash of a message.

• HashEncryptionAlgorithm
  CRYPT_ALGORITHM_IDENTIFIER structure that specifies the algorithm used to encrypt the hash.

• EncryptedHash
  CRYPT_DATA_BLOB that contains the encrypted hash of the message, the signature.

• AuthAttrs
  CRYPT_ATTRIBUTES structure that contains authenticated attributes of the signer.

• UnauthAttrs
  CRYPT_ATTRIBUTES structure that contains unauthenticated attributes of the signer.

Requirements

Header

wincrypt.h

See Also

Reference

Cryptography Structures
CRYPTOAPI_BLOB
CRYPT_ALGORITHM_IDENTIFIER
CRYPT_ATTRIBUTES