Cryptoki: a cryptographic Token Interface
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pkcs11-base-v2.40-cos01
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- 10.12. Functions for verifying signatures and MACs
C_SignRecoverCK_DEFINE_FUNCTION(CK_RV, C_SignRecover)( CK_SESSION_HANDLE hSession, CK_BYTE_PTR pData, CK_ULONG ulDataLen, CK_BYTE_PTR pSignature, CK_ULONG_PTR pulSignatureLen ); C_SignRecover signs data in a single operation, where the data can be recovered from the signature. hSession is the session’s handle; pData points to the data; uLDataLen is the length of the data; pSignature points to the location that receives the signature; pulSignatureLen points to the location that holds the length of the signature. C_SignRecover uses the convention described in Section on producing output. The signing operation must have been initialized with C_SignRecoverInit. A call to C_SignRecover always terminates the active signing operation unless it returns CKR_BUFFER_TOO_SMALL or is a successful call (i.e., one which returns CKR_OK) to determine the length of the buffer needed to hold the signature. Return values: CKR_BUFFER_TOO_SMALL, CKR_CRYPTOKI_NOT_INITIALIZED, CKR_DATA_INVALID, CKR_DATA_LEN_RANGE, CKR_DEVICE_ERROR, CKR_DEVICE_MEMORY, CKR_DEVICE_REMOVED, CKR_FUNCTION_CANCELED, CKR_FUNCTION_FAILED, CKR_GENERAL_ERROR, CKR_HOST_MEMORY, CKR_OK, CKR_OPERATION_NOT_INITIALIZED, CKR_SESSION_CLOSED, CKR_SESSION_HANDLE_INVALID. Example: CK_SESSION_HANDLE hSession; CK_OBJECT_HANDLE hKey; CK_MECHANISM mechanism = { CKM_RSA_9796, NULL_PTR, 0 }; CK_BYTE data[] = {...}; CK_BYTE signature[128]; CK_ULONG ulSignatureLen; CK_RV rv; .
rv = C_SignRecoverInit(hSession, &mechanism, hKey); if (rv == CKR_OK) { ulSignatureLen = sizeof(signature); rv = C_SignRecover( hSession, data, sizeof(data), signature, &ulSignatureLen); if (rv == CKR_OK) { . . . } } 10.12. Functions for verifying signatures and MACsCryptoki provides the following functions for verifying signatures on data (for the purposes of Cryptoki, these operations also encompass message authentication codes): Download 360.55 Kb. Share with your friends:
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