![]() | Cryptographic Token Interface Standard |
PKCS#11 |
Data Fields | |
CK_ULONG | ulMinKeySize |
the minimum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent). More... | |
CK_ULONG | ulMaxKeySize |
the maximum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent). More... | |
CK_FLAGS | flags |
bit flags specifying mechanism capabilities. More... |
ulMinKeySize | the minimum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent) |
ulMaxKeySize | the maximum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent) |
flags | bit flags specifying mechanism capabilities |
For some mechanisms, the ulMinKeySize and ulMaxKeySize fields have meaningless values.
The following table defines the flags field:
Table 13, Mechanism Information Flags
Bit Flag | Mask | Meaning |
CKF_HW | 0x00000001 | True if the mechanism is performed by the device; false if the mechanism is performed in software |
CKF_ENCRYPT | 0x00000100 | True if the mechanism can be used with C_EncryptInit |
CKF_DECRYPT | 0x00000200 | True if the mechanism can be used with C_DecryptInit |
CKF_DIGEST | 0x00000400 | True if the mechanism can be used with C_DigestInit |
CKF_SIGN | 0x00000800 | True if the mechanism can be used with C_SignInit |
CKF_SIGN_RECOVER | 0x00001000 | True if the mechanism can be used with C_SignRecoverInit |
CKF_VERIFY | 0x00002000 | True if the mechanism can be used with C_VerifyInit |
CKF_VERIFY_RECOVER | 0x00004000 | True if the mechanism can be used with C_VerifyRecoverInit |
CKF_GENERATE | 0x00008000 | True if the mechanism can be used with C_GenerateKey |
CKF_GENERATE_KEY_PAIR | 0x00010000 | True if the mechanism can be used with C_GenerateKeyPair |
CKF_WRAP | 0x00020000 | True if the mechanism can be used with C_WrapKey |
CKF_UNWRAP | 0x00040000 | True if the mechanism can be used with C_UnwrapKey |
CKF_DERIVE | 0x00080000 | True if the mechanism can be used with C_DeriveKey |
CKF_EXTENSION | 0x80000000 | True if there is an extension to the flags; false if no extensions. Must be false for this version. |
CK_MECHANISM_INFO_PTR is a pointer to a CK_MECHANISM_INFO.
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the minimum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent). |
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the maximum size of the key for the mechanism (whether this is measured in bits or in bytes is mechanism-dependent). |
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bit flags specifying mechanism capabilities. |