/*

 * Copyright 1995-2017 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

 */

#include <string.h>

#include "internal/nelem.h"

#include "testutil.h"

#ifndef OPENSSL_NO_RC4

# include <openssl/rc4.h>

# include <openssl/sha.h>

static unsigned char keys[6][30] = {

    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},

    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},

    {8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},

    {4, 0xef, 0x01, 0x23, 0x45},

    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},

    {4, 0xef, 0x01, 0x23, 0x45},

};

static unsigned char data_len[6] = { 8, 8, 8, 20, 28, 10 };

static unsigned char data[6][30] = {

    {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xff},

    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},

    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},

    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

     0x00, 0x00, 0x00, 0x00, 0xff},

    {0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,

     0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,

     0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,

     0x12, 0x34, 0x56, 0x78, 0xff},

    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},

};

static unsigned char output[6][30] = {

    {0x75, 0xb7, 0x87, 0x80, 0x99, 0xe0, 0xc5, 0x96, 0x00},

    {0x74, 0x94, 0xc2, 0xe7, 0x10, 0x4b, 0x08, 0x79, 0x00},

    {0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a, 0x00},

    {0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf,

     0xbd, 0x61, 0x5a, 0x11, 0x62, 0xe1, 0xc7, 0xba,

     0x36, 0xb6, 0x78, 0x58, 0x00},

    {0x66, 0xa0, 0x94, 0x9f, 0x8a, 0xf7, 0xd6, 0x89,

     0x1f, 0x7f, 0x83, 0x2b, 0xa8, 0x33, 0xc0, 0x0c,

     0x89, 0x2e, 0xbe, 0x30, 0x14, 0x3c, 0xe2, 0x87,

     0x40, 0x01, 0x1e, 0xcf, 0x00},

    {0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf, 0xbd, 0x61, 0x00},

};

static int test_rc4_encrypt(const int i)

{

    unsigned char obuf[512];

    RC4_KEY key;

    RC4_set_key(&key, keys[i][0], &(keys[i][1]));

    memset(obuf, 0, sizeof(obuf));

    RC4(&key, data_len[i], &(data[i][0]), obuf);

    return TEST_mem_eq(obuf, data_len[i] + 1, output[i], data_len[i] + 1);

}

static int test_rc4_end_processing(const int i)

{

    unsigned char obuf[512];

    RC4_KEY key;

    RC4_set_key(&key, keys[3][0], &(keys[3][1]));

    memset(obuf, 0, sizeof(obuf));

    RC4(&key, i, &(data[3][0]), obuf);

    if (!TEST_mem_eq(obuf, i, output[3], i))

        return 0;

    return TEST_uchar_eq(obuf[i], 0);

}

static int test_rc4_multi_call(const int i)

{

    unsigned char obuf[512];

    RC4_KEY key;

    RC4_set_key(&key, keys[3][0], &(keys[3][1]));

    memset(obuf, 0, sizeof(obuf));

    RC4(&key, i, &(data[3][0]), obuf);

    RC4(&key, data_len[3] - i, &(data[3][i]), &(obuf[i]));

    return TEST_mem_eq(obuf, data_len[3] + 1, output[3], data_len[3] + 1);

}

static int test_rc_bulk(void)

{

    RC4_KEY key;

    unsigned char buf[513];

    SHA_CTX c;

    unsigned char md[SHA_DIGEST_LENGTH];

    int i;

    static unsigned char expected[] = {

        0xa4, 0x7b, 0xcc, 0x00, 0x3d, 0xd0, 0xbd, 0xe1, 0xac, 0x5f,

        0x12, 0x1e, 0x45, 0xbc, 0xfb, 0x1a, 0xa1, 0xf2, 0x7f, 0xc5

    };

    RC4_set_key(&key, keys[0][0], &(keys[3][1]));

    memset(buf, 0, sizeof(buf));

    SHA1_Init(&c);

    for (i = 0; i < 2571; i++) {

        RC4(&key, sizeof(buf), buf, buf);

        SHA1_Update(&c, buf, sizeof(buf));

    }

    SHA1_Final(md, &c);

    return TEST_mem_eq(md, sizeof(md), expected, sizeof(expected));

}

#endif

int setup_tests(void)

{

#ifndef OPENSSL_NO_RC4

    ADD_ALL_TESTS(test_rc4_encrypt, OSSL_NELEM(data_len));

    ADD_ALL_TESTS(test_rc4_end_processing, data_len[3]);

    ADD_ALL_TESTS(test_rc4_multi_call, data_len[3]);

    ADD_TEST(test_rc_bulk);

#endif

    return 1;

}