ICspAlgorithm::get_DefaultLength method (certenroll.h)
The DefaultLength property retrieves the default length of a key. This property is web enabled.
This property is read-only.
Syntax
HRESULT get_DefaultLength(
LONG *pValue
);
Parameters
pValue
Return value
None
Remarks
You can use this property to retrieve the default size, in bits, of a key. The DefaultLength, IncrementLength, MaxLength, and MinLength properties can vary by algorithm and provider. The following table lists a few algorithms for which multiple key sizes can be set. The list is not inclusive.
| Algorithm OID | Cryptographic provider | Key length (bits) |
|---|---|---|
| XCN_OID_RSA_RSA(1.2.840.113549.1.1.1) |
Microsoft Smart Card Key Storage Provider
Microsoft Base Smart Card Crypto Provider |
Minimum: 1,024
Maximum: 4,096 Default: 1,024 Increment: 512 |
| XCN_OID_RSA_RSA(1.2.840.113549.1.1.1) |
Microsoft Software Key Storage Provider
Microsoft Base Cryptographic Provider v1.0 Microsoft Enhanced Cryptographic Provider v1.0 Microsoft Enhanced RSA and AES Cryptographic Provider Microsoft RSA Schannel Cryptographic Provider Microsoft Strong Cryptographic Provider |
Minimum: 384
Maximum: 16,384 Default: 1,024 Increment: 8 |
| XCN_OID_X957_DSA(1.2.840.10040.4.1) |
Microsoft Software Key Storage Provider
Microsoft Base DSS and Diffie-Hellman Cryptographic Provider Microsoft Base DSS Cryptographic Provider Microsoft DH Schannel Cryptographic Provider Microsoft Enhanced DSS and Diffie-Hellman Cryptographic Provider |
Minimum: 512
Maximum: 1,024 Default: 1,024 Increment: 64 |
| XCN_OID_ANSI_X942_DH(1.2.840.10046.2.1) | Diffie-Hellman key exchange algorithm. |
Minimum: 512
Maximum: 1,024 Default: 1,024 Increment: 64 |
| XCN_OID_ANSI_X942_DH(1.2.840.10046.2.1) |
Microsoft DH Schannel Cryptographic Provider
Microsoft Enhanced DSS and Diffie-Hellman Cryptographic Provider |
Minimum: 512
Maximum: 4,096 Default: 1,024 Increment: 64 |
| XCN_OID_RSA_RC2CBC(1.2.840.113549.3.2) |
Microsoft Software Key Storage Provider
Microsoft Smart Card Key Storage Provider Microsoft Base Smart Card Crypto Provider Microsoft DH Schannel Cryptographic Provider Microsoft Enhanced Cryptographic Provider v1.0 Microsoft Enhanced DSS and Diffie-Hellman Cryptographic Provider Microsoft Enhanced RSA and AES Cryptographic Provider Microsoft RSA Schannel Cryptographic Provider Microsoft Strong Cryptographic Provider |
Minimum: 40
Maximum: 128 Default: 128 Increment: 8 |
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 |