C++ (Cpp) cipher_get_iv_size 예제들

예제 #1

파일: cipher.c 프로젝트: Ga-vin/libsylixos

int cipher_reset( cipher_context_t *ctx, const unsigned char *iv )
{
    if( NULL == ctx || NULL == ctx->cipher_info || NULL == iv )
        return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;

    ctx->unprocessed_len = 0;

    memcpy( ctx->iv, iv, cipher_get_iv_size( ctx ) );

    return 0;
}

예제 #2

파일: cipher.c 프로젝트: Ga-vin/libsylixos

int cipher_finish( cipher_context_t *ctx, unsigned char *output, size_t *olen)
{
    int ret = 0;

    if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen )
        return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;

    *olen = 0;

    if( POLARSSL_MODE_CFB == ctx->cipher_info->mode ||
        POLARSSL_MODE_CTR == ctx->cipher_info->mode ||
        POLARSSL_MODE_NULL == ctx->cipher_info->mode )
    {
        return 0;
    }

    if( POLARSSL_MODE_CBC == ctx->cipher_info->mode )
    {
        if( POLARSSL_ENCRYPT == ctx->operation )
        {
            add_pkcs_padding( ctx->unprocessed_data, cipher_get_iv_size( ctx ),
                    ctx->unprocessed_len );
        }
        else if ( cipher_get_block_size( ctx ) != ctx->unprocessed_len )
        {
            /* For decrypt operations, expect a full block */
            return POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED;
        }

        /* cipher block */
        if( 0 != ( ret = ctx->cipher_info->base->cbc_func( ctx->cipher_ctx,
                ctx->operation, cipher_get_block_size( ctx ), ctx->iv,
                ctx->unprocessed_data, output ) ) )
        {
            return ret;
        }

        /* Set output size for decryption */
        if( POLARSSL_DECRYPT == ctx->operation )
            return get_pkcs_padding( output, cipher_get_block_size( ctx ), olen );

        /* Set output size for encryption */
        *olen = cipher_get_block_size( ctx );
        return 0;
    }

    return POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE;
}

예제 #3

파일: cipher.c 프로젝트: RuralHunter/showtime

int cipher_finish( cipher_context_t *ctx,
                   unsigned char *output, size_t *olen )
{
    if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen )
        return( POLARSSL_ERR_CIPHER_BAD_INPUT_DATA );

    *olen = 0;

    if( POLARSSL_MODE_CFB == ctx->cipher_info->mode ||
        POLARSSL_MODE_CTR == ctx->cipher_info->mode ||
        POLARSSL_MODE_GCM == ctx->cipher_info->mode ||
        POLARSSL_MODE_STREAM == ctx->cipher_info->mode )
    {
        return( 0 );
    }

    if( POLARSSL_MODE_ECB == ctx->cipher_info->mode )
    {
        if( ctx->unprocessed_len != 0 )
            return( POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED );

        return( 0 );
    }

#if defined(POLARSSL_CIPHER_MODE_CBC)
    if( POLARSSL_MODE_CBC == ctx->cipher_info->mode )
    {
        int ret = 0;

        if( POLARSSL_ENCRYPT == ctx->operation )
        {
            /* check for 'no padding' mode */
            if( NULL == ctx->add_padding )
            {
                if( 0 != ctx->unprocessed_len )
                    return( POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED );

                return( 0 );
            }

            ctx->add_padding( ctx->unprocessed_data, cipher_get_iv_size( ctx ),
                    ctx->unprocessed_len );
        }
        else if( cipher_get_block_size( ctx ) != ctx->unprocessed_len )
        {
            /*
             * For decrypt operations, expect a full block,
             * or an empty block if no padding
             */
            if( NULL == ctx->add_padding && 0 == ctx->unprocessed_len )
                return( 0 );

            return( POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED );
        }

        /* cipher block */
        if( 0 != ( ret = ctx->cipher_info->base->cbc_func( ctx->cipher_ctx,
                ctx->operation, cipher_get_block_size( ctx ), ctx->iv,
                ctx->unprocessed_data, output ) ) )
        {
            return( ret );
        }

        /* Set output size for decryption */
        if( POLARSSL_DECRYPT == ctx->operation )
            return ctx->get_padding( output, cipher_get_block_size( ctx ),
                                     olen );

        /* Set output size for encryption */
        *olen = cipher_get_block_size( ctx );
        return( 0 );
    }
#else
    ((void) output);
#endif /* POLARSSL_CIPHER_MODE_CBC */

    return( POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE );
}

예제 #4

파일: crypto_polarssl.c 프로젝트: cryptotronix/openvpn-nl

int cipher_ctx_iv_length (const cipher_context_t *ctx)
{
  return cipher_get_iv_size(ctx);
}

예제 #5

파일: Cipher.cpp 프로젝트: cwyiu/fibjs

result_t Cipher::get_ivSize(int32_t &retVal)
{
    retVal = cipher_get_iv_size(&m_ctx);
    return 0;
}