static int32_t completeHmac()

in source/sigv4.c [2558:2592]

• 30 lines of code
• 3 McCabe index (conditional complexity)

static int32_t completeHmac( HmacContext_t * pHmacContext,
                             const char * pKey,
                             size_t keyLen,
                             const char * pData,
                             size_t dataLen,
                             char * pOutput,
                             size_t outputLen )
{
    int32_t returnStatus = 0;

    assert( pHmacContext != NULL );
    assert( pKey != NULL );
    assert( keyLen > 0U );
    assert( pData != NULL );
    assert( dataLen > 0U );
    assert( pOutput != NULL );
    assert( outputLen >= pHmacContext->pCryptoInterface->hashDigestLen );

    returnStatus = hmacAddKey( pHmacContext,
                               pKey,
                               keyLen,
                               false /* Not a key prefix. */ );

    if( returnStatus == 0 )
    {
        returnStatus = hmacIntermediate( pHmacContext, pData, dataLen );
    }

    if( returnStatus == 0 )
    {
        returnStatus = hmacFinal( pHmacContext, pOutput, outputLen );
    }

    return returnStatus;
}