CRYPT_OID_INFO

The CRYPT_OID_INFO structure is used for finding or registering OID information.

typedef struct _CRYPT_OID_INFO {
    DWORD               cbSize;
    LPCSTR              pszOID;
    LPCWSTR             pwszName;
    DWORD               dwGroupId;
    union {
        DWORD               dwValue;
        ALG_ID              Algid;
        DWORD               dwLength;
    };
    CRYPT_DATA_BLOB     ExtraInfo;
} CRYPT_OID_INFO, *PCRYPT_OID_INFO;
typedef const CRYPT_OID_INFO CCRYPT_OID_INFO, *PCCRYPT_OID_INFO; 

Members

cbSize

Must be set to the size of this data structure.

pszOID

The object identifier associated with this OID information.

pwszName

The friendly name associated with the object identifier.

dwGroupId

Specifies the group ID associated with this OID information.

Currently defined group IDs are shown in the following table.

dwGroupId	Value
CRYPT_HASH_ALG_OID_GROUP_ID	1
CRYPT_ENCRYPT_ALG_OID_GROUP_ID	2
CRYPT_PUBKEY_ALG_OID_GROUP_ID	3
CRYPT_SIGN_ALG_OID_GROUP_ID	4
CRYPT_RDN_ATTR_OID_GROUP_ID	5
CRYPT_EXT_OR_ATTR_OID_GROUP_ID	6
CRYPT_ENHKEY_USAGE_OID_GROUP_ID	7
CRYPT_POLICY_OID_GROUP_ID	8

dwValue

An arbitrary value associated with this OID information.

Applies for the following values of dwGroupId:

CRYPT_SIGN_ALG_OID_GROUP_ID

Algid

The algorithm identifier associated with this OID information.

Applies for the following values of dwGroupId:

CRYPT_HASH_ALG_OID_GROUP_ID,
CRYPT_ENCRYPT_ALG_OID_GROUP_ID,
CRYPT_PUBKEY_ALG_OID_GROUP_ID,
CRYPT_SIGN_ALG_OID_GROUP_ID

dwLength

The maximum length for the attribute string.

Applies for the following values of dwGroupId:

CRYPT_RDN_ATTR_OID_GROUP_ID

ExtraInfo

Specifies optional extra information for which the find or register of OID information is being performed.

Applies for the following values of dwGroupId:

CRYPT_PUBKEY_ALG_OID_GROUP_ID

CRYPT_SIGN_ALG_OID_GROUP_ID

CRYPT_RDN_ATTR_OID_GROUP_ID

See Also

CryptFindOIDInfo, CryptRegisterOIDInfo, CryptUnregisterOIDInfo