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4/8/2010

This structure identifies the key used to sign a certificate. The CERT_AUTHORITY_KEY_ID_INFOstructure differentiates among distinct keys used by the same certification authority (CA) as, for example, keys changed when an update occurs.

The key can be identified by an explicit key identifier, by giving a certificate's issuer and serial number, or by giving both. If both are used, the certificate issuer must ensure that the explicit key identifier, the certificate issuer, and the serial number are consistent.

The CryptDecodeObjectfunction creates an instance of this structure when performed on a CERT_EXTENSIONstructure's Valuemember with the structure's pszObjIdmember set to szOID_AUTHORITY_KEY_IDENTIFIER.

An instance of this structure can be used as input to the CryptEncodeObjectfunction to create an appropriate CERT_EXTENSIONstructure.

Syntax 

typedef struct _CERT_AUTHORITY_KEY_ID_INFO {
  CRYPT_DATA_BLOB 
KeyId;
  CERT_NAME_BLOB 
CertIssuer;
  CRYPT_INTEGER_BLOB 
CertSerialNumber;
} CERT_AUTHORITY_KEY_ID_INFO, *PCERT_AUTHORITY_KEY_ID_INFO;

Members

KeyId

CRYPT_DATA_BLOBstructure containing a unique identifier of a public key.

CertIssuer

CERT_NAME_BLOBstructure containing the encoded distinguished name of the CA that issued the certificate.

CertSerialNumber

CRYPT_INTEGER_BLOBstructure containing the serial number of the certificate associated with the private key used to sign this certificate. For more details, see the CERT_INFOstructure.

Requirements

Header wincrypt.h
Windows Embedded CE Windows CE 3.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also