CRYPT_KEY_VERIFY_MESSAGE_PARA structure (wincrypt.h)

The CRYPT_KEY_VERIFY_MESSAGE_PARA structure contains information needed to verify signed messages without a certificate for the signer.

Syntax

typedef struct _CRYPT_KEY_VERIFY_MESSAGE_PARA {
  DWORD             cbSize;
  DWORD             dwMsgEncodingType;
  HCRYPTPROV_LEGACY hCryptProv;
} CRYPT_KEY_VERIFY_MESSAGE_PARA, *PCRYPT_KEY_VERIFY_MESSAGE_PARA;

Members

cbSize

The size, in bytes, of this structure.

dwMsgEncodingType

Type of encoding used. It is always acceptable to specify both the certificate and message encoding types by combining them with a bitwise-OR operation as shown in the following example:

X509_ASN_ENCODING | PKCS_7_ASN_ENCODING

Currently defined encoding types are:

• X509_ASN_ENCODING
• PKCS_7_ASN_ENCODING

hCryptProv

This member is not used and should be set to NULL.

Windows Server 2003 and Windows XP:  A handle to the cryptographic service provider (CSP) to be used to verify a signed message. The CSP identified by this handle is used for hashing and for signature verification.Unless there is a strong reason for using a specific cryptographic provider, set this member to zero to use the default RSA or DSS provider.

This member's data type is HCRYPTPROV.

Requirements