CMSG_CTRL_DECRYPT_PARA (Windows Embedded CE 6.0)
1/6/2010
This structure contains information used to decrypt an enveloped message for a key transport recipient. This structure is passed to CryptMsgControl if the dwCtrlType parameter is CMSG_CTRL_DECRYPT.
Important changes affecting the handling of enveloped messages have been made to CryptoAPI to support S/MIME e-mail interoperability. For details, see the Remarks section of CryptMsgOpenToEncode.
Syntax
typedef struct _CMSG_CTRL_DECRYPT_PARA {
DWORD cbSize;
HCRYPTPROV hCryptProv;
DWORD dwKeySpec;
DWORD dwRecipientIndex;
} CMSG_CTRL_DECRYPT_PARA, *PCMSG_CTRL_DECRYPT_PARA;
Members
- cbSize
Size of this structure in bytes.
- hCryptProv
Cryptographic service provider (CSP) handle.
dwKeySpec
The private key to be used.The following dwKeySpec values are defined for the default provider.
Value Description AT_KEYEXCHANGE
Keys used to encrypt/decrypt session keys.
AT_SIGNATURE
Keys used to create and verify digital signatures.
If dwKeySpec is zero, the default AT_KEYEXCHANGE is used.
- dwRecipientIndex
Index of the recipient in the message associated with the hCryptProv private key.
Requirements
| Header | wincrypt.h |
| Windows Embedded CE | Windows CE .NET 4.0 and later |