ISmimeCapability::get_BitCount method (certenroll.h)
The BitCount property retrieves the length, in bits, of the encryption key.
This property is read-only.
Syntax
HRESULT get_BitCount(
LONG *pValue
);
Parameters
pValue
Return value
None
Remarks
Call the Initialize method to specify the BitCount property. The following symmetric encryption algorithms and key lengths are supported by the Certificate Enrollment API.
| OID | Key Length |
|---|---|
| XCN_OID_OIWSEC_desCBC1.3.14.3.2.7 | 56 |
| XCN_OID_RSA_DES_EDE3_CBC1.2.840.113549.3.7 | 168 |
| XCN_OID_RSA_RC2CBC1.2.840.113549.3.2 | 40 to 128 |
| XCN_OID_RSA_RC41.2.840.113549.3.4 | 40 to 128 |
| XCN_OID_RSA_SMIMEalgCMS3DESwrap1.2.840.113549.1.9.16.3.6 | 168 |
| XCN_OID_RSA_SMIMEalgCMSRC2wrap1.2.840.113549.1.9.16.3.7 | 128 |
| XCN_OID_NIST_AES128_CBC2.16.840.1.101.3.4.1.2 | 128 |
| XCN_OID_NIST_AES192_CBC2.16.840.1.101.3.4.1.22 | 192 |
| XCN_OID_NIST_AES256_CBC2.16.840.1.101.3.4.1.42 | 256 |
| XCN_OID_NIST_AES128_WRAP2.16.840.1.101.3.4.1.5 | 128 |
| XCN_OID_NIST_AES192_WRAP2.16.840.1.101.3.4.1.25 | 192 |
| XCN_OID_NIST_AES256_WRAP2.16.840.1.101.3.4.1.45 | 256 |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | certenroll.h |
| DLL | CertEnroll.dll |