Импорт ключа (Страница 2 из 2)

CK_ATTRIBUTE    stAttrValue[] = { { CKA_VALUE, NULL, 0 } };
        if( lRetCode == CKR_OK )
            lRetCode = pstFL->C_GetAttributeValue( m_hSession, hPublicKey, &stAttrValue[0], sizeof( stAttrValue ) / sizeof( stAttrValue[0] ));
        if( lRetCode == CKR_OK )
        {
            stAttrValue[0].pValue = ( stAttrValue[0].ulValueLen != 0 ? new BYTE[stAttrValue[0].ulValueLen] : NULL );
            if( stAttrValue[0].pValue == NULL )
                lRetCode = CKR_HOST_MEMORY;
            else
            {
                lRetCode = pstFL->C_GetAttributeValue( m_hSession, hPublicKey, &stAttrValue[0], sizeof( stAttrValue ) / sizeof( stAttrValue[0] ));
                if( lRetCode == CKR_OK )
                {
                    UINT    nSizeKeyParams = 0;
                    BYTE*    pbtKeyParams = NULL;
                    // Формируем поле параметров алгоритма электронной подписи
                    CSCLTLVField*    pfieldParameters = CProvider::asn1NewFieldParameters( m_nAlgorithm, nAlgParams );
                    if( pfieldParameters != NULL )
                    {
                        nSizeKeyParams = pfieldParameters->MakeBuffer( NULL );
                        pbtKeyParams = new BYTE[nSizeKeyParams];
                        if( pbtKeyParams != NULL )
                            nSizeKeyParams = pfieldParameters->MakeBuffer( pbtKeyParams );
                        else
                            nSizeKeyParams = 0;

                        delete pfieldParameters;
                    }

                    dwBlobLen = sizeof( CRYPT_PUBLICKEYBLOB::CRYPT_PUBKEY_INFO_HEADER ) + nSizeKeyParams + stAttrValue[0].ulValueLen;
                    pbtEphemBlob = new BYTE[dwBlobLen];
                    if( pbtEphemBlob != NULL )
                    {
                        CRYPT_PUBLICKEYBLOB*    pstCPKB = ( CRYPT_PUBLICKEYBLOB* )pbtEphemBlob;
                        pstCPKB->stPublicKeyParam.BlobHeader.bType = 0x06/*PUBLICKEYBLOB*/;
                        pstCPKB->stPublicKeyParam.BlobHeader.bVersion = 0x20/*BLOB_VERSION*/;
                        pstCPKB->stPublicKeyParam.BlobHeader.reserved = 0;
                        pstCPKB->stPublicKeyParam.BlobHeader.aiKeyAlg = 0x00002E23/*CALG_GR3410EL*/;
                        pstCPKB->stPublicKeyParam.KeyParam.Magic = 0x3147414D/*GR3410_1_MAGIC*/;
                        pstCPKB->stPublicKeyParam.KeyParam.BitLen = (nKeySize+nSizeKeyParams) * 8;
                        memcpy( &pbtEphemBlob[sizeof( CRYPT_PUBLICKEYBLOB::CRYPT_PUBKEY_INFO_HEADER )], pbtKeyParams, nSizeKeyParams );
                        memcpy( &pbtEphemBlob[sizeof( CRYPT_PUBLICKEYBLOB::CRYPT_PUBKEY_INFO_HEADER ) + nSizeKeyParams], stAttrValue[0].pValue, stAttrValue[0].ulValueLen );
                    }
                    if(pbtKeyParams)
                        delete [] pbtKeyParams;
                }

                delete [] ( BYTE* )stAttrValue[0].pValue;
            }
        }

    BYTE* pbtKeyInfo=(BYTE*)&pbtPublicKeyBlob[sizeof( CRYPT_PUBLICKEYBLOB::CRYPT_PUBKEY_INFO_HEADER )];
    CK_ULONG ulKeylength=((CRYPT_PUBLICKEYBLOB*)pbtPublicKeyBlob)->stPublicKeyParam.KeyParam.BitLen/8;
    ASSERT(ulKeylength==64);
    nKeySize=ulKeylength;
    return pbtKeyInfo;