/*
 * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* Internal tests for the siphash module */

#include <stdio.h>
#include <string.h>

#include <openssl/bio.h>
#include "testutil.h"
#include "test_main_custom.h"
#include "internal/siphash.h"
#include "../crypto/siphash/siphash_local.h"
#include "e_os.h"

static BIO* b_stderr = NULL;
static BIO* b_stdout = NULL;

typedef struct {
    size_t size;
    unsigned char data[64];
} SIZED_DATA;

typedef struct {
    int idx;
    SIZED_DATA expected;
} TESTDATA;

/**********************************************************************
 *
 * Test of siphash internal functions
 *
 ***/

static int benchmark_siphash(void)
{
# ifdef OPENSSL_CPUID_OBJ
    SIPHASH siphash;
    unsigned char key[SIPHASH_KEY_SIZE];
    unsigned char buf[8192];
    unsigned long long stopwatch;
    unsigned long long OPENSSL_rdtsc();
    unsigned int i;

    memset (buf,0x55,sizeof(buf));
    memset (key,0xAA,sizeof(key));

    (void)SipHash_Init(&siphash, key, 0, 0, 0);

    for (i=0;i<100000;i++)
        SipHash_Update(&siphash, buf, sizeof(buf));

    stopwatch = OPENSSL_rdtsc();
    for (i=0;i<10000;i++)
        SipHash_Update(&siphash, buf, sizeof(buf));
    stopwatch = OPENSSL_rdtsc() - stopwatch;

    BIO_printf(b_stdout, "%g\n",stopwatch/(double)(i*sizeof(buf)));

    stopwatch = OPENSSL_rdtsc();
    for (i=0;i<10000;i++) {
        (void)SipHash_Init(&siphash, key, 0, 0, 0);
        SipHash_Update(&siphash, buf, 16);
        (void)SipHash_Final(&siphash, buf, SIPHASH_MAX_DIGEST_SIZE);
    }
    stopwatch = OPENSSL_rdtsc() - stopwatch;

    BIO_printf(b_stdout, "%g\n",stopwatch/(double)(i));
# else
    BIO_printf(b_stderr,
               "Benchmarking of siphash isn't available on this platform\n");
# endif
    return 1;
}

/* From C reference: https://131002.net/siphash/ */

static TESTDATA tests[] = {
    { 0, { 8, { 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, } } },
    { 1, { 8, { 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, } } },
    { 2, { 8, { 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, } } },
    { 3, { 8, { 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, } } },
    { 4, { 8, { 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, } } },
    { 5, { 8, { 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, } } },
    { 6, { 8, { 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, } } },
    { 7, { 8, { 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, } } },
    { 8, { 8, { 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, } } },
    { 9, { 8, { 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, } } },
    { 10, { 8, { 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, } } },
    { 11, { 8, { 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, } } },
    { 12, { 8, { 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, } } },
    { 13, { 8, { 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, } } },
    { 14, { 8, { 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, } } },
    { 15, { 8, { 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, } } },
    { 16, { 8, { 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, } } },
    { 17, { 8, { 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, } } },
    { 18, { 8, { 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, } } },
    { 19, { 8, { 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, } } },
    { 20, { 8, { 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, } } },
    { 21, { 8, { 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, } } },
    { 22, { 8, { 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, } } },
    { 23, { 8, { 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, } } },
    { 24, { 8, { 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, } } },
    { 25, { 8, { 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, } } },
    { 26, { 8, { 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, } } },
    { 27, { 8, { 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, } } },
    { 28, { 8, { 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, } } },
    { 29, { 8, { 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, } } },
    { 30, { 8, { 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, } } },
    { 31, { 8, { 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, } } },
    { 32, { 8, { 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, } } },
    { 33, { 8, { 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, } } },
    { 34, { 8, { 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, } } },
    { 35, { 8, { 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, } } },
    { 36, { 8, { 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, } } },
    { 37, { 8, { 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, } } },
    { 38, { 8, { 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, } } },
    { 39, { 8, { 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, } } },
    { 40, { 8, { 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, } } },
    { 41, { 8, { 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, } } },
    { 42, { 8, { 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, } } },
    { 43, { 8, { 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, } } },
    { 44, { 8, { 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, } } },
    { 45, { 8, { 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, } } },
    { 46, { 8, { 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, } } },
    { 47, { 8, { 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, } } },
    { 48, { 8, { 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, } } },
    { 49, { 8, { 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, } } },
    { 50, { 8, { 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, } } },
    { 51, { 8, { 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, } } },
    { 52, { 8, { 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, } } },
    { 53, { 8, { 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, } } },
    { 54, { 8, { 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, } } },
    { 55, { 8, { 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, } } },
    { 56, { 8, { 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, } } },
    { 57, { 8, { 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, } } },
    { 58, { 8, { 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, } } },
    { 59, { 8, { 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, } } },
    { 60, { 8, { 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, } } },
    { 61, { 8, { 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, } } },
    { 62, { 8, { 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, } } },
    { 63, { 8, { 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, } } },
    { 0, { 16, { 0xa3, 0x81, 0x7f, 0x04, 0xba, 0x25, 0xa8, 0xe6, 0x6d, 0xf6, 0x72, 0x14, 0xc7, 0x55, 0x02, 0x93, } } },
    { 1, { 16, { 0xda, 0x87, 0xc1, 0xd8, 0x6b, 0x99, 0xaf, 0x44, 0x34, 0x76, 0x59, 0x11, 0x9b, 0x22, 0xfc, 0x45, } } },
    { 2, { 16, { 0x81, 0x77, 0x22, 0x8d, 0xa4, 0xa4, 0x5d, 0xc7, 0xfc, 0xa3, 0x8b, 0xde, 0xf6, 0x0a, 0xff, 0xe4, } } },
    { 3, { 16, { 0x9c, 0x70, 0xb6, 0x0c, 0x52, 0x67, 0xa9, 0x4e, 0x5f, 0x33, 0xb6, 0xb0, 0x29, 0x85, 0xed, 0x51, } } },
    { 4, { 16, { 0xf8, 0x81, 0x64, 0xc1, 0x2d, 0x9c, 0x8f, 0xaf, 0x7d, 0x0f, 0x6e, 0x7c, 0x7b, 0xcd, 0x55, 0x79, } } },
    { 5, { 16, { 0x13, 0x68, 0x87, 0x59, 0x80, 0x77, 0x6f, 0x88, 0x54, 0x52, 0x7a, 0x07, 0x69, 0x0e, 0x96, 0x27, } } },
    { 6, { 16, { 0x14, 0xee, 0xca, 0x33, 0x8b, 0x20, 0x86, 0x13, 0x48, 0x5e, 0xa0, 0x30, 0x8f, 0xd7, 0xa1, 0x5e, } } },
    { 7, { 16, { 0xa1, 0xf1, 0xeb, 0xbe, 0xd8, 0xdb, 0xc1, 0x53, 0xc0, 0xb8, 0x4a, 0xa6, 0x1f, 0xf0, 0x82, 0x39, } } },
    { 8, { 16, { 0x3b, 0x62, 0xa9, 0xba, 0x62, 0x58, 0xf5, 0x61, 0x0f, 0x83, 0xe2, 0x64, 0xf3, 0x14, 0x97, 0xb4, } } },
    { 9, { 16, { 0x26, 0x44, 0x99, 0x06, 0x0a, 0xd9, 0xba, 0xab, 0xc4, 0x7f, 0x8b, 0x02, 0xbb, 0x6d, 0x71, 0xed, } } },
    { 10, { 16, { 0x00, 0x11, 0x0d, 0xc3, 0x78, 0x14, 0x69, 0x56, 0xc9, 0x54, 0x47, 0xd3, 0xf3, 0xd0, 0xfb, 0xba, } } },
    { 11, { 16, { 0x01, 0x51, 0xc5, 0x68, 0x38, 0x6b, 0x66, 0x77, 0xa2, 0xb4, 0xdc, 0x6f, 0x81, 0xe5, 0xdc, 0x18, } } },
    { 12, { 16, { 0xd6, 0x26, 0xb2, 0x66, 0x90, 0x5e, 0xf3, 0x58, 0x82, 0x63, 0x4d, 0xf6, 0x85, 0x32, 0xc1, 0x25, } } },
    { 13, { 16, { 0x98, 0x69, 0xe2, 0x47, 0xe9, 0xc0, 0x8b, 0x10, 0xd0, 0x29, 0x93, 0x4f, 0xc4, 0xb9, 0x52, 0xf7, } } },
    { 14, { 16, { 0x31, 0xfc, 0xef, 0xac, 0x66, 0xd7, 0xde, 0x9c, 0x7e, 0xc7, 0x48, 0x5f, 0xe4, 0x49, 0x49, 0x02, } } },
    { 15, { 16, { 0x54, 0x93, 0xe9, 0x99, 0x33, 0xb0, 0xa8, 0x11, 0x7e, 0x08, 0xec, 0x0f, 0x97, 0xcf, 0xc3, 0xd9, } } },
    { 16, { 16, { 0x6e, 0xe2, 0xa4, 0xca, 0x67, 0xb0, 0x54, 0xbb, 0xfd, 0x33, 0x15, 0xbf, 0x85, 0x23, 0x05, 0x77, } } },
    { 17, { 16, { 0x47, 0x3d, 0x06, 0xe8, 0x73, 0x8d, 0xb8, 0x98, 0x54, 0xc0, 0x66, 0xc4, 0x7a, 0xe4, 0x77, 0x40, } } },
    { 18, { 16, { 0xa4, 0x26, 0xe5, 0xe4, 0x23, 0xbf, 0x48, 0x85, 0x29, 0x4d, 0xa4, 0x81, 0xfe, 0xae, 0xf7, 0x23, } } },
    { 19, { 16, { 0x78, 0x01, 0x77, 0x31, 0xcf, 0x65, 0xfa, 0xb0, 0x74, 0xd5, 0x20, 0x89, 0x52, 0x51, 0x2e, 0xb1, } } },
    { 20, { 16, { 0x9e, 0x25, 0xfc, 0x83, 0x3f, 0x22, 0x90, 0x73, 0x3e, 0x93, 0x44, 0xa5, 0xe8, 0x38, 0x39, 0xeb, } } },
    { 21, { 16, { 0x56, 0x8e, 0x49, 0x5a, 0xbe, 0x52, 0x5a, 0x21, 0x8a, 0x22, 0x14, 0xcd, 0x3e, 0x07, 0x1d, 0x12, } } },
    { 22, { 16, { 0x4a, 0x29, 0xb5, 0x45, 0x52, 0xd1, 0x6b, 0x9a, 0x46, 0x9c, 0x10, 0x52, 0x8e, 0xff, 0x0a, 0xae, } } },
    { 23, { 16, { 0xc9, 0xd1, 0x84, 0xdd, 0xd5, 0xa9, 0xf5, 0xe0, 0xcf, 0x8c, 0xe2, 0x9a, 0x9a, 0xbf, 0x69, 0x1c, } } },
    { 24, { 16, { 0x2d, 0xb4, 0x79, 0xae, 0x78, 0xbd, 0x50, 0xd8, 0x88, 0x2a, 0x8a, 0x17, 0x8a, 0x61, 0x32, 0xad, } } },
    { 25, { 16, { 0x8e, 0xce, 0x5f, 0x04, 0x2d, 0x5e, 0x44, 0x7b, 0x50, 0x51, 0xb9, 0xea, 0xcb, 0x8d, 0x8f, 0x6f, } } },
    { 26, { 16, { 0x9c, 0x0b, 0x53, 0xb4, 0xb3, 0xc3, 0x07, 0xe8, 0x7e, 0xae, 0xe0, 0x86, 0x78, 0x14, 0x1f, 0x66, } } },
    { 27, { 16, { 0xab, 0xf2, 0x48, 0xaf, 0x69, 0xa6, 0xea, 0xe4, 0xbf, 0xd3, 0xeb, 0x2f, 0x12, 0x9e, 0xeb, 0x94, } } },
    { 28, { 16, { 0x06, 0x64, 0xda, 0x16, 0x68, 0x57, 0x4b, 0x88, 0xb9, 0x35, 0xf3, 0x02, 0x73, 0x58, 0xae, 0xf4, } } },
    { 29, { 16, { 0xaa, 0x4b, 0x9d, 0xc4, 0xbf, 0x33, 0x7d, 0xe9, 0x0c, 0xd4, 0xfd, 0x3c, 0x46, 0x7c, 0x6a, 0xb7, } } },
    { 30, { 16, { 0xea, 0x5c, 0x7f, 0x47, 0x1f, 0xaf, 0x6b, 0xde, 0x2b, 0x1a, 0xd7, 0xd4, 0x68, 0x6d, 0x22, 0x87, } } },
    { 31, { 16, { 0x29, 0x39, 0xb0, 0x18, 0x32, 0x23, 0xfa, 0xfc, 0x17, 0x23, 0xde, 0x4f, 0x52, 0xc4, 0x3d, 0x35, } } },
    { 32, { 16, { 0x7c, 0x39, 0x56, 0xca, 0x5e, 0xea, 0xfc, 0x3e, 0x36, 0x3e, 0x9d, 0x55, 0x65, 0x46, 0xeb, 0x68, } } },
    { 33, { 16, { 0x77, 0xc6, 0x07, 0x71, 0x46, 0xf0, 0x1c, 0x32, 0xb6, 0xb6, 0x9d, 0x5f, 0x4e, 0xa9, 0xff, 0xcf, } } },
    { 34, { 16, { 0x37, 0xa6, 0x98, 0x6c, 0xb8, 0x84, 0x7e, 0xdf, 0x09, 0x25, 0xf0, 0xf1, 0x30, 0x9b, 0x54, 0xde, } } },
    { 35, { 16, { 0xa7, 0x05, 0xf0, 0xe6, 0x9d, 0xa9, 0xa8, 0xf9, 0x07, 0x24, 0x1a, 0x2e, 0x92, 0x3c, 0x8c, 0xc8, } } },
    { 36, { 16, { 0x3d, 0xc4, 0x7d, 0x1f, 0x29, 0xc4, 0x48, 0x46, 0x1e, 0x9e, 0x76, 0xed, 0x90, 0x4f, 0x67, 0x11, } } },
    { 37, { 16, { 0x0d, 0x62, 0xbf, 0x01, 0xe6, 0xfc, 0x0e, 0x1a, 0x0d, 0x3c, 0x47, 0x51, 0xc5, 0xd3, 0x69, 0x2b, } } },
    { 38, { 16, { 0x8c, 0x03, 0x46, 0x8b, 0xca, 0x7c, 0x66, 0x9e, 0xe4, 0xfd, 0x5e, 0x08, 0x4b, 0xbe, 0xe7, 0xb5, } } },
    { 39, { 16, { 0x52, 0x8a, 0x5b, 0xb9, 0x3b, 0xaf, 0x2c, 0x9c, 0x44, 0x73, 0xcc, 0xe5, 0xd0, 0xd2, 0x2b, 0xd9, } } },
    { 40, { 16, { 0xdf, 0x6a, 0x30, 0x1e, 0x95, 0xc9, 0x5d, 0xad, 0x97, 0xae, 0x0c, 0xc8, 0xc6, 0x91, 0x3b, 0xd8, } } },
    { 41, { 16, { 0x80, 0x11, 0x89, 0x90, 0x2c, 0x85, 0x7f, 0x39, 0xe7, 0x35, 0x91, 0x28, 0x5e, 0x70, 0xb6, 0xdb, } } },
    { 42, { 16, { 0xe6, 0x17, 0x34, 0x6a, 0xc9, 0xc2, 0x31, 0xbb, 0x36, 0x50, 0xae, 0x34, 0xcc, 0xca, 0x0c, 0x5b, } } },
    { 43, { 16, { 0x27, 0xd9, 0x34, 0x37, 0xef, 0xb7, 0x21, 0xaa, 0x40, 0x18, 0x21, 0xdc, 0xec, 0x5a, 0xdf, 0x89, } } },
    { 44, { 16, { 0x89, 0x23, 0x7d, 0x9d, 0xed, 0x9c, 0x5e, 0x78, 0xd8, 0xb1, 0xc9, 0xb1, 0x66, 0xcc, 0x73, 0x42, } } },
    { 45, { 16, { 0x4a, 0x6d, 0x80, 0x91, 0xbf, 0x5e, 0x7d, 0x65, 0x11, 0x89, 0xfa, 0x94, 0xa2, 0x50, 0xb1, 0x4c, } } },
    { 46, { 16, { 0x0e, 0x33, 0xf9, 0x60, 0x55, 0xe7, 0xae, 0x89, 0x3f, 0xfc, 0x0e, 0x3d, 0xcf, 0x49, 0x29, 0x02, } } },
    { 47, { 16, { 0xe6, 0x1c, 0x43, 0x2b, 0x72, 0x0b, 0x19, 0xd1, 0x8e, 0xc8, 0xd8, 0x4b, 0xdc, 0x63, 0x15, 0x1b, } } },
    { 48, { 16, { 0xf7, 0xe5, 0xae, 0xf5, 0x49, 0xf7, 0x82, 0xcf, 0x37, 0x90, 0x55, 0xa6, 0x08, 0x26, 0x9b, 0x16, } } },
    { 49, { 16, { 0x43, 0x8d, 0x03, 0x0f, 0xd0, 0xb7, 0xa5, 0x4f, 0xa8, 0x37, 0xf2, 0xad, 0x20, 0x1a, 0x64, 0x03, } } },
    { 50, { 16, { 0xa5, 0x90, 0xd3, 0xee, 0x4f, 0xbf, 0x04, 0xe3, 0x24, 0x7e, 0x0d, 0x27, 0xf2, 0x86, 0x42, 0x3f, } } },
    { 51, { 16, { 0x5f, 0xe2, 0xc1, 0xa1, 0x72, 0xfe, 0x93, 0xc4, 0xb1, 0x5c, 0xd3, 0x7c, 0xae, 0xf9, 0xf5, 0x38, } } },
    { 52, { 16, { 0x2c, 0x97, 0x32, 0x5c, 0xbd, 0x06, 0xb3, 0x6e, 0xb2, 0x13, 0x3d, 0xd0, 0x8b, 0x3a, 0x01, 0x7c, } } },
    { 53, { 16, { 0x92, 0xc8, 0x14, 0x22, 0x7a, 0x6b, 0xca, 0x94, 0x9f, 0xf0, 0x65, 0x9f, 0x00, 0x2a, 0xd3, 0x9e, } } },
    { 54, { 16, { 0xdc, 0xe8, 0x50, 0x11, 0x0b, 0xd8, 0x32, 0x8c, 0xfb, 0xd5, 0x08, 0x41, 0xd6, 0x91, 0x1d, 0x87, } } },
    { 55, { 16, { 0x67, 0xf1, 0x49, 0x84, 0xc7, 0xda, 0x79, 0x12, 0x48, 0xe3, 0x2b, 0xb5, 0x92, 0x25, 0x83, 0xda, } } },
    { 56, { 16, { 0x19, 0x38, 0xf2, 0xcf, 0x72, 0xd5, 0x4e, 0xe9, 0x7e, 0x94, 0x16, 0x6f, 0xa9, 0x1d, 0x2a, 0x36, } } },
    { 57, { 16, { 0x74, 0x48, 0x1e, 0x96, 0x46, 0xed, 0x49, 0xfe, 0x0f, 0x62, 0x24, 0x30, 0x16, 0x04, 0x69, 0x8e, } } },
    { 58, { 16, { 0x57, 0xfc, 0xa5, 0xde, 0x98, 0xa9, 0xd6, 0xd8, 0x00, 0x64, 0x38, 0xd0, 0x58, 0x3d, 0x8a, 0x1d, } } },
    { 59, { 16, { 0x9f, 0xec, 0xde, 0x1c, 0xef, 0xdc, 0x1c, 0xbe, 0xd4, 0x76, 0x36, 0x74, 0xd9, 0x57, 0x53, 0x59, } } },
    { 60, { 16, { 0xe3, 0x04, 0x0c, 0x00, 0xeb, 0x28, 0xf1, 0x53, 0x66, 0xca, 0x73, 0xcb, 0xd8, 0x72, 0xe7, 0x40, } } },
    { 61, { 16, { 0x76, 0x97, 0x00, 0x9a, 0x6a, 0x83, 0x1d, 0xfe, 0xcc, 0xa9, 0x1c, 0x59, 0x93, 0x67, 0x0f, 0x7a, } } },
    { 62, { 16, { 0x58, 0x53, 0x54, 0x23, 0x21, 0xf5, 0x67, 0xa0, 0x05, 0xd5, 0x47, 0xa4, 0xf0, 0x47, 0x59, 0xbd, } } },
    { 63, { 16, { 0x51, 0x50, 0xd1, 0x77, 0x2f, 0x50, 0x83, 0x4a, 0x50, 0x3e, 0x06, 0x9a, 0x97, 0x3f, 0xbd, 0x7c, } } }
};

static void hex_out(BIO *b, char *prefix, int width, unsigned char* data, size_t n)
{
    /*
     * this could be modified to handle multiple lines, but as it is
     * used here, this only displays up to 16 bytes
     */
    BIO_printf(b, "%s", prefix);
    BIO_hex_string(b, 0, width, data, n);
    BIO_printf(b, "\n");
}


static int test_siphash(int idx)
{
    SIPHASH siphash;
    TESTDATA test = tests[idx];
    unsigned char key[SIPHASH_KEY_SIZE];
    unsigned char in[64];
    size_t inlen = test.idx;
    unsigned char *expected = test.expected.data;
    size_t expectedlen = test.expected.size;
    unsigned char out[SIPHASH_MAX_DIGEST_SIZE];
    size_t i;

    if (expectedlen != SIPHASH_MIN_DIGEST_SIZE &&
        expectedlen != SIPHASH_MAX_DIGEST_SIZE)
        return 0;

    if (inlen > sizeof(in))
        return 0;

    /* key and in data are 00 01 02 ... */
    for (i = 0; i < sizeof(key); i++)
        key[i] = i;

    for (i = 0; i < inlen; i++)
        in[i] = i;

    if (!SipHash_Init(&siphash, key, expectedlen, 0, 0)) {
        BIO_printf(b_stderr, "SipHash_Init failed\n");
        return 0;
    }
    SipHash_Update(&siphash, in, inlen);
    if (!SipHash_Final(&siphash, out, expectedlen)) {
        BIO_printf(b_stderr, "SipHash_Final failed\n");
        return 0;
    }

    if (memcmp(out, expected, expectedlen) != 0) {
        BIO_printf(b_stderr, "SipHash test #%d failed.\n", idx);
        hex_out(b_stderr, "got:      ", 16, out, expectedlen);
        hex_out(b_stderr, "expected: ", 16, expected, expectedlen);
        return 0;
    }

    if (inlen > 16) {
        if (!SipHash_Init(&siphash, key, expectedlen, 0, 0)) {
            BIO_printf(b_stderr, "SipHash_Init failed\n");
            return 0;
        }
        SipHash_Update(&siphash, in, 1);
        SipHash_Update(&siphash, in+1, inlen-1);
        if (!SipHash_Final(&siphash, out, expectedlen)) {
            BIO_printf(b_stderr, "SipHash_Final failed\n");
            return 0;
        }

        if (memcmp(out, expected, expectedlen) != 0) {
            BIO_printf(b_stderr, "SipHash test #%d/1+(N-1) failed.\n", idx);
            hex_out(b_stderr, "got:      ", 16, out, expectedlen);
            hex_out(b_stderr, "expected: ", 16, expected, expectedlen);
            return 0;
        }
    }

    if (inlen > 32) {
        size_t half = inlen / 2;

        if (!SipHash_Init(&siphash, key, expectedlen, 0, 0)) {
            BIO_printf(b_stderr, "SipHash_Init failed\n");
            return 0;
        }
        SipHash_Update(&siphash, in, half);
        SipHash_Update(&siphash, in+half, inlen-half);
        if (!SipHash_Final(&siphash, out, expectedlen)) {
            BIO_printf(b_stderr, "SipHash_Final failed\n");
            return 0;
        }

        if (memcmp(out, expected, expectedlen) != 0) {
            BIO_printf(b_stderr, "SipHash test #%d/2 failed.\n", idx);
            hex_out(b_stderr, "got:      ", 16, out, expectedlen);
            hex_out(b_stderr, "expected: ", 16, expected, expectedlen);
            return 0;
        }

        for (half = 16; half < inlen; half += 16) {
            if (!SipHash_Init(&siphash, key, expectedlen, 0, 0)) {
                BIO_printf(b_stderr, "SipHash_Init failed\n");
                return 0;
            }
            SipHash_Update(&siphash, in, half);
            SipHash_Update(&siphash, in+half, inlen-half);
            if (!SipHash_Final(&siphash, out, expectedlen)) {
                BIO_printf(b_stderr, "SipHash_Final failed\n");
                return 0;
            }

            if (memcmp(out, expected, expectedlen) != 0) {
                BIO_printf(b_stderr, "SipHash test #%d/%" OSSLzu "+%" OSSLzu " failed.\n",
                       idx, half, inlen-half);
                hex_out(b_stderr, "got:      ", 16, out, expectedlen);
                hex_out(b_stderr, "expected: ", 16, expected, expectedlen);
                return 0;
            }
        }
    }

    return 1;
}

static int test_siphash_basic(void)
{
    SIPHASH siphash;
    unsigned char key[SIPHASH_KEY_SIZE];
    unsigned char output[SIPHASH_MAX_DIGEST_SIZE];

    /* Use invalid hash size */
    if (SipHash_Init(&siphash, key, 4, 0, 0)) {
        BIO_printf(b_stderr, "SipHash_Init(output size = 4) should have failed\n");
        return 0;
    }

    /* Use hash size = 8 */
    if (!SipHash_Init(&siphash, key, 8, 0, 0)) {
        BIO_printf(b_stderr, "SipHash_Init(output size = 8) should have succeeded\n");
        return 0;
    }
    if (!SipHash_Final(&siphash, output, 8)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 8) should have succeeded\n");
        return 0;
    }
    if (SipHash_Final(&siphash, output, 16)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 16) should have failed\n");
        return 0;
    }

    /* Use hash size = 16 */
    if (!SipHash_Init(&siphash, key, 16, 0, 0)) {
        BIO_printf(b_stderr, "SipHash_Init(output size = 16) should have succeeded\n");
        return 0;
    }
    if (SipHash_Final(&siphash, output, 8)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 8) should have failed\n");
        return 0;
    }
    if (!SipHash_Final(&siphash, output, 16)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 16) should have succeeded\n");
        return 0;
    }

    /* Use hash size = 0 (default = 16) */
    if (!SipHash_Init(&siphash, key, 0, 0, 0)) {
        BIO_printf(b_stderr, "SipHash_Init(output size = 0) should have succeeded\n");
        return 0;
    }
    if (SipHash_Final(&siphash, output, 8)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 8) should have failed\n");
        return 0;
    }
    if (!SipHash_Final(&siphash, output, 16)) {
        BIO_printf(b_stderr, "SipHash_Final(output size = 16) should have succeeded\n");
        return 0;
    }
    return 1;
}


int test_main(int argc, char **argv)
{
    int result = 0;
    int iter_argv;
    int benchmark = 0;

    b_stderr = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
    b_stdout = BIO_new_fp(stdout, BIO_NOCLOSE | BIO_FP_TEXT);
#ifdef OPENSSL_SYS_VMS
    b_stderr = BIO_push(BIO_new(BIO_f_linebuffer()), b_stderr);
    b_stdout = BIO_push(BIO_new(BIO_f_linebuffer()), b_stdout);
#endif

    for (iter_argv = 1; iter_argv < argc; iter_argv++) {
        if (strcmp(argv[iter_argv], "-b") == 0)
            benchmark = 1;
        else if (strcmp(argv[iter_argv], "-h") == 0)
            goto help;
    }

    ADD_TEST(test_siphash_basic);
    ADD_ALL_TESTS(test_siphash, OSSL_NELEM(tests));
    if (benchmark)
        ADD_TEST(benchmark_siphash);

    result = run_tests(argv[0]);
    goto out;

 help:
    BIO_printf(b_stdout, "-h\tThis help\n");
    BIO_printf(b_stdout, "-b\tBenchmark in addition to the tests\n");

 out:
    BIO_free(b_stdout);
    BIO_free(b_stderr);

    return result;
}