bftest.c

/*
 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (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
 */

/*
 * BF low level APIs are deprecated for public use, but still ok for internal
 * use.
 */
#include "internal/deprecated.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <openssl/opensslconf.h> /* To see if OPENSSL_NO_BF is defined */
#include "testutil.h"

#include "internal/nelem.h"

#ifndef OPENSSL_NO_BF
# include <openssl/blowfish.h>

# ifdef CHARSET_EBCDIC
#  include <openssl/ebcdic.h>
# endif

static char bf_key[2][30] = {
    "abcdefghijklmnopqrstuvwxyz",
    "Who is John Galt?"
};

/* big endian */
static BF_LONG bf_plain[2][2] = {
    {0x424c4f57L, 0x46495348L},
    {0xfedcba98L, 0x76543210L}
};

static BF_LONG bf_cipher[2][2] = {
    {0x324ed0feL, 0xf413a203L},
    {0xcc91732bL, 0x8022f684L}
};

/************/

/* Lets use the DES test vectors :-) */
# define NUM_TESTS 34
static unsigned char ecb_data[NUM_TESTS][8] = {
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
    {0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10},
    {0x7C, 0xA1, 0x10, 0x45, 0x4A, 0x1A, 0x6E, 0x57},
    {0x01, 0x31, 0xD9, 0x61, 0x9D, 0xC1, 0x37, 0x6E},
    {0x07, 0xA1, 0x13, 0x3E, 0x4A, 0x0B, 0x26, 0x86},
    {0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E},
    {0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6},
    {0x01, 0x13, 0xB9, 0x70, 0xFD, 0x34, 0xF2, 0xCE},
    {0x01, 0x70, 0xF1, 0x75, 0x46, 0x8F, 0xB5, 0xE6},
    {0x43, 0x29, 0x7F, 0xAD, 0x38, 0xE3, 0x73, 0xFE},
    {0x07, 0xA7, 0x13, 0x70, 0x45, 0xDA, 0x2A, 0x16},
    {0x04, 0x68, 0x91, 0x04, 0xC2, 0xFD, 0x3B, 0x2F},
    {0x37, 0xD0, 0x6B, 0xB5, 0x16, 0xCB, 0x75, 0x46},
    {0x1F, 0x08, 0x26, 0x0D, 0x1A, 0xC2, 0x46, 0x5E},
    {0x58, 0x40, 0x23, 0x64, 0x1A, 0xBA, 0x61, 0x76},
    {0x02, 0x58, 0x16, 0x16, 0x46, 0x29, 0xB0, 0x07},
    {0x49, 0x79, 0x3E, 0xBC, 0x79, 0xB3, 0x25, 0x8F},
    {0x4F, 0xB0, 0x5E, 0x15, 0x15, 0xAB, 0x73, 0xA7},
    {0x49, 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF},
    {0x01, 0x83, 0x10, 0xDC, 0x40, 0x9B, 0x26, 0xD6},
    {0x1C, 0x58, 0x7F, 0x1C, 0x13, 0x92, 0x4F, 0xEF},
    {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
    {0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E},
    {0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10}
};

static unsigned char plain_data[NUM_TESTS][8] = {
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
    {0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
    {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11},
    {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0x01, 0xA1, 0xD6, 0xD0, 0x39, 0x77, 0x67, 0x42},
    {0x5C, 0xD5, 0x4C, 0xA8, 0x3D, 0xEF, 0x57, 0xDA},
    {0x02, 0x48, 0xD4, 0x38, 0x06, 0xF6, 0x71, 0x72},
    {0x51, 0x45, 0x4B, 0x58, 0x2D, 0xDF, 0x44, 0x0A},
    {0x42, 0xFD, 0x44, 0x30, 0x59, 0x57, 0x7F, 0xA2},
    {0x05, 0x9B, 0x5E, 0x08, 0x51, 0xCF, 0x14, 0x3A},
    {0x07, 0x56, 0xD8, 0xE0, 0x77, 0x47, 0x61, 0xD2},
    {0x76, 0x25, 0x14, 0xB8, 0x29, 0xBF, 0x48, 0x6A},
    {0x3B, 0xDD, 0x11, 0x90, 0x49, 0x37, 0x28, 0x02},
    {0x26, 0x95, 0x5F, 0x68, 0x35, 0xAF, 0x60, 0x9A},
    {0x16, 0x4D, 0x5E, 0x40, 0x4F, 0x27, 0x52, 0x32},
    {0x6B, 0x05, 0x6E, 0x18, 0x75, 0x9F, 0x5C, 0xCA},
    {0x00, 0x4B, 0xD6, 0xEF, 0x09, 0x17, 0x60, 0x62},
    {0x48, 0x0D, 0x39, 0x00, 0x6E, 0xE7, 0x62, 0xF2},
    {0x43, 0x75, 0x40, 0xC8, 0x69, 0x8F, 0x3C, 0xFA},
    {0x07, 0x2D, 0x43, 0xA0, 0x77, 0x07, 0x52, 0x92},
    {0x02, 0xFE, 0x55, 0x77, 0x81, 0x17, 0xF1, 0x2A},
    {0x1D, 0x9D, 0x5C, 0x50, 0x18, 0xF7, 0x28, 0xC2},
    {0x30, 0x55, 0x32, 0x28, 0x6D, 0x6F, 0x29, 0x5A},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
};

static unsigned char cipher_data[NUM_TESTS][8] = {
    {0x4E, 0xF9, 0x97, 0x45, 0x61, 0x98, 0xDD, 0x78},
    {0x51, 0x86, 0x6F, 0xD5, 0xB8, 0x5E, 0xCB, 0x8A},
    {0x7D, 0x85, 0x6F, 0x9A, 0x61, 0x30, 0x63, 0xF2},
    {0x24, 0x66, 0xDD, 0x87, 0x8B, 0x96, 0x3C, 0x9D},
    {0x61, 0xF9, 0xC3, 0x80, 0x22, 0x81, 0xB0, 0x96},
    {0x7D, 0x0C, 0xC6, 0x30, 0xAF, 0xDA, 0x1E, 0xC7},
    {0x4E, 0xF9, 0x97, 0x45, 0x61, 0x98, 0xDD, 0x78},
    {0x0A, 0xCE, 0xAB, 0x0F, 0xC6, 0xA0, 0xA2, 0x8D},
    {0x59, 0xC6, 0x82, 0x45, 0xEB, 0x05, 0x28, 0x2B},
    {0xB1, 0xB8, 0xCC, 0x0B, 0x25, 0x0F, 0x09, 0xA0},
    {0x17, 0x30, 0xE5, 0x77, 0x8B, 0xEA, 0x1D, 0xA4},
    {0xA2, 0x5E, 0x78, 0x56, 0xCF, 0x26, 0x51, 0xEB},
    {0x35, 0x38, 0x82, 0xB1, 0x09, 0xCE, 0x8F, 0x1A},
    {0x48, 0xF4, 0xD0, 0x88, 0x4C, 0x37, 0x99, 0x18},
    {0x43, 0x21, 0x93, 0xB7, 0x89, 0x51, 0xFC, 0x98},
    {0x13, 0xF0, 0x41, 0x54, 0xD6, 0x9D, 0x1A, 0xE5},
    {0x2E, 0xED, 0xDA, 0x93, 0xFF, 0xD3, 0x9C, 0x79},
    {0xD8, 0x87, 0xE0, 0x39, 0x3C, 0x2D, 0xA6, 0xE3},
    {0x5F, 0x99, 0xD0, 0x4F, 0x5B, 0x16, 0x39, 0x69},
    {0x4A, 0x05, 0x7A, 0x3B, 0x24, 0xD3, 0x97, 0x7B},
    {0x45, 0x20, 0x31, 0xC1, 0xE4, 0xFA, 0xDA, 0x8E},
    {0x75, 0x55, 0xAE, 0x39, 0xF5, 0x9B, 0x87, 0xBD},
    {0x53, 0xC5, 0x5F, 0x9C, 0xB4, 0x9F, 0xC0, 0x19},
    {0x7A, 0x8E, 0x7B, 0xFA, 0x93, 0x7E, 0x89, 0xA3},
    {0xCF, 0x9C, 0x5D, 0x7A, 0x49, 0x86, 0xAD, 0xB5},
    {0xD1, 0xAB, 0xB2, 0x90, 0x65, 0x8B, 0xC7, 0x78},
    {0x55, 0xCB, 0x37, 0x74, 0xD1, 0x3E, 0xF2, 0x01},
    {0xFA, 0x34, 0xEC, 0x48, 0x47, 0xB2, 0x68, 0xB2},
    {0xA7, 0x90, 0x79, 0x51, 0x08, 0xEA, 0x3C, 0xAE},
    {0xC3, 0x9E, 0x07, 0x2D, 0x9F, 0xAC, 0x63, 0x1D},
    {0x01, 0x49, 0x33, 0xE0, 0xCD, 0xAF, 0xF6, 0xE4},
    {0xF2, 0x1E, 0x9A, 0x77, 0xB7, 0x1C, 0x49, 0xBC},
    {0x24, 0x59, 0x46, 0x88, 0x57, 0x54, 0x36, 0x9A},
    {0x6B, 0x5C, 0x5A, 0x9C, 0x5D, 0x9E, 0x0A, 0x5A},
};

static unsigned char cbc_key[16] = {
    0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
    0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87
};
static unsigned char cbc_iv[8] =
    { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 };
static char cbc_data[40] = "7654321 Now is the time for ";
static unsigned char cbc_ok[32] = {
    0x6B, 0x77, 0xB4, 0xD6, 0x30, 0x06, 0xDE, 0xE6,
    0x05, 0xB1, 0x56, 0xE2, 0x74, 0x03, 0x97, 0x93,
    0x58, 0xDE, 0xB9, 0xE7, 0x15, 0x46, 0x16, 0xD9,
    0x59, 0xF1, 0x65, 0x2B, 0xD5, 0xFF, 0x92, 0xCC
};

static unsigned char cfb64_ok[] = {
    0xE7, 0x32, 0x14, 0xA2, 0x82, 0x21, 0x39, 0xCA,
    0xF2, 0x6E, 0xCF, 0x6D, 0x2E, 0xB9, 0xE7, 0x6E,
    0x3D, 0xA3, 0xDE, 0x04, 0xD1, 0x51, 0x72, 0x00,
    0x51, 0x9D, 0x57, 0xA6, 0xC3
};

static unsigned char ofb64_ok[] = {
    0xE7, 0x32, 0x14, 0xA2, 0x82, 0x21, 0x39, 0xCA,
    0x62, 0xB3, 0x43, 0xCC, 0x5B, 0x65, 0x58, 0x73,
    0x10, 0xDD, 0x90, 0x8D, 0x0C, 0x24, 0x1B, 0x22,
    0x63, 0xC2, 0xCF, 0x80, 0xDA
};

# define KEY_TEST_NUM    25
static unsigned char key_test[KEY_TEST_NUM] = {
    0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87,
    0x78, 0x69, 0x5a, 0x4b, 0x3c, 0x2d, 0x1e, 0x0f,
    0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
    0x88
};

static unsigned char key_data[8] =
    { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 };

static unsigned char key_out[KEY_TEST_NUM][8] = {
    {0xF9, 0xAD, 0x59, 0x7C, 0x49, 0xDB, 0x00, 0x5E},
    {0xE9, 0x1D, 0x21, 0xC1, 0xD9, 0x61, 0xA6, 0xD6},
    {0xE9, 0xC2, 0xB7, 0x0A, 0x1B, 0xC6, 0x5C, 0xF3},
    {0xBE, 0x1E, 0x63, 0x94, 0x08, 0x64, 0x0F, 0x05},
    {0xB3, 0x9E, 0x44, 0x48, 0x1B, 0xDB, 0x1E, 0x6E},
    {0x94, 0x57, 0xAA, 0x83, 0xB1, 0x92, 0x8C, 0x0D},
    {0x8B, 0xB7, 0x70, 0x32, 0xF9, 0x60, 0x62, 0x9D},
    {0xE8, 0x7A, 0x24, 0x4E, 0x2C, 0xC8, 0x5E, 0x82},
    {0x15, 0x75, 0x0E, 0x7A, 0x4F, 0x4E, 0xC5, 0x77},
    {0x12, 0x2B, 0xA7, 0x0B, 0x3A, 0xB6, 0x4A, 0xE0},
    {0x3A, 0x83, 0x3C, 0x9A, 0xFF, 0xC5, 0x37, 0xF6},
    {0x94, 0x09, 0xDA, 0x87, 0xA9, 0x0F, 0x6B, 0xF2},
    {0x88, 0x4F, 0x80, 0x62, 0x50, 0x60, 0xB8, 0xB4},
    {0x1F, 0x85, 0x03, 0x1C, 0x19, 0xE1, 0x19, 0x68},
    {0x79, 0xD9, 0x37, 0x3A, 0x71, 0x4C, 0xA3, 0x4F},
    {0x93, 0x14, 0x28, 0x87, 0xEE, 0x3B, 0xE1, 0x5C},
    {0x03, 0x42, 0x9E, 0x83, 0x8C, 0xE2, 0xD1, 0x4B},
    {0xA4, 0x29, 0x9E, 0x27, 0x46, 0x9F, 0xF6, 0x7B},
    {0xAF, 0xD5, 0xAE, 0xD1, 0xC1, 0xBC, 0x96, 0xA8},
    {0x10, 0x85, 0x1C, 0x0E, 0x38, 0x58, 0xDA, 0x9F},
    {0xE6, 0xF5, 0x1E, 0xD7, 0x9B, 0x9D, 0xB2, 0x1F},
    {0x64, 0xA6, 0xE1, 0x4A, 0xFD, 0x36, 0xB4, 0x6F},
    {0x80, 0xC7, 0xD7, 0xD4, 0x5A, 0x54, 0x79, 0xAD},
    {0x05, 0x04, 0x4B, 0x62, 0xFA, 0x52, 0xD0, 0x80},
};

static int print_test_data(void)
{
    unsigned int i, j;

    printf("ecb test data\n");
    printf("key bytes\t\tclear bytes\t\tcipher bytes\n");
    for (i = 0; i < NUM_TESTS; i++) {
        for (j = 0; j < 8; j++)
            printf("%02X", ecb_data[i][j]);
        printf("\t");
        for (j = 0; j < 8; j++)
            printf("%02X", plain_data[i][j]);
        printf("\t");
        for (j = 0; j < 8; j++)
            printf("%02X", cipher_data[i][j]);
        printf("\n");
    }

    printf("set_key test data\n");
    printf("data[8]= ");
    for (j = 0; j < 8; j++)
        printf("%02X", key_data[j]);
    printf("\n");
    for (i = 0; i < KEY_TEST_NUM - 1; i++) {
        printf("c=");
        for (j = 0; j < 8; j++)
            printf("%02X", key_out[i][j]);
        printf(" k[%2u]=", i + 1);
        for (j = 0; j < i + 1; j++)
            printf("%02X", key_test[j]);
        printf("\n");
    }

    printf("\nchaining mode test data\n");
    printf("key[16]   = ");
    for (j = 0; j < 16; j++)
        printf("%02X", cbc_key[j]);
    printf("\niv[8]     = ");
    for (j = 0; j < 8; j++)
        printf("%02X", cbc_iv[j]);
    printf("\ndata[%d]  = '%s'", (int)strlen(cbc_data) + 1, cbc_data);
    printf("\ndata[%d]  = ", (int)strlen(cbc_data) + 1);
    for (j = 0; j < strlen(cbc_data) + 1; j++)
        printf("%02X", cbc_data[j]);
    printf("\n");
    printf("cbc cipher text\n");
    printf("cipher[%d]= ", 32);
    for (j = 0; j < 32; j++)
        printf("%02X", cbc_ok[j]);
    printf("\n");

    printf("cfb64 cipher text\n");
    printf("cipher[%d]= ", (int)strlen(cbc_data) + 1);
    for (j = 0; j < strlen(cbc_data) + 1; j++)
        printf("%02X", cfb64_ok[j]);
    printf("\n");

    printf("ofb64 cipher text\n");
    printf("cipher[%d]= ", (int)strlen(cbc_data) + 1);
    for (j = 0; j < strlen(cbc_data) + 1; j++)
        printf("%02X", ofb64_ok[j]);
    printf("\n");
    return 0;
}

static int test_bf_ecb_raw(int n)
{
    int ret = 1;
    BF_KEY key;
    BF_LONG data[2];

    BF_set_key(&key, strlen(bf_key[n]), (unsigned char *)bf_key[n]);

    data[0] = bf_plain[n][0];
    data[1] = bf_plain[n][1];
    BF_encrypt(data, &key);
    if (!TEST_mem_eq(&(bf_cipher[n][0]), BF_BLOCK, &(data[0]), BF_BLOCK))
        ret = 0;

    BF_decrypt(&(data[0]), &key);
    if (!TEST_mem_eq(&(bf_plain[n][0]), BF_BLOCK, &(data[0]), BF_BLOCK))
        ret = 0;

    return ret;
}

static int test_bf_ecb(int n)
{
    int ret = 1;
    BF_KEY key;
    unsigned char out[8];

    BF_set_key(&key, 8, ecb_data[n]);

    BF_ecb_encrypt(&(plain_data[n][0]), out, &key, BF_ENCRYPT);
    if (!TEST_mem_eq(&(cipher_data[n][0]), BF_BLOCK, out, BF_BLOCK))
        ret = 0;

    BF_ecb_encrypt(out, out, &key, BF_DECRYPT);
    if (!TEST_mem_eq(&(plain_data[n][0]), BF_BLOCK, out, BF_BLOCK))
        ret = 0;

    return ret;
}

static int test_bf_set_key(int n)
{
    int ret = 1;
    BF_KEY key;
    unsigned char out[8];

    BF_set_key(&key, n+1, key_test);
    BF_ecb_encrypt(key_data, out, &key, BF_ENCRYPT);
    /* mips-sgi-irix6.5-gcc  vv  -mabi=64 bug workaround */
    if (!TEST_mem_eq(out, 8, &(key_out[n][0]), 8))
        ret = 0;

    return ret;
}

static int test_bf_cbc(void)
{
    unsigned char cbc_in[40], cbc_out[40], iv[8];
    int ret = 1;
    BF_KEY key;
    BF_LONG len;

    len = strlen(cbc_data) + 1;

    BF_set_key(&key, 16, cbc_key);
    memset(cbc_in, 0, sizeof(cbc_in));
    memset(cbc_out, 0, sizeof(cbc_out));
    memcpy(iv, cbc_iv, sizeof(iv));
    BF_cbc_encrypt((unsigned char *)cbc_data, cbc_out, len,
                   &key, iv, BF_ENCRYPT);
    if (!TEST_mem_eq(cbc_out, 32, cbc_ok, 32))
        ret = 0;

    memcpy(iv, cbc_iv, 8);
    BF_cbc_encrypt(cbc_out, cbc_in, len, &key, iv, BF_DECRYPT);
    if (!TEST_mem_eq(cbc_in, len, cbc_data, strlen(cbc_data) + 1))
        ret = 0;

    return ret;
}

static int test_bf_cfb64(void)
{
    unsigned char cbc_in[40], cbc_out[40], iv[8];
    int n, ret = 1;
    BF_KEY key;
    BF_LONG len;

    len = strlen(cbc_data) + 1;

    BF_set_key(&key, 16, cbc_key);
    memset(cbc_in, 0, 40);
    memset(cbc_out, 0, 40);
    memcpy(iv, cbc_iv, 8);
    n = 0;
    BF_cfb64_encrypt((unsigned char *)cbc_data, cbc_out, (long)13,
                     &key, iv, &n, BF_ENCRYPT);
    BF_cfb64_encrypt((unsigned char *)&(cbc_data[13]), &(cbc_out[13]),
                     len - 13, &key, iv, &n, BF_ENCRYPT);
    if (!TEST_mem_eq(cbc_out, (int)len, cfb64_ok, (int)len))
        ret = 0;

    n = 0;
    memcpy(iv, cbc_iv, 8);
    BF_cfb64_encrypt(cbc_out, cbc_in, 17, &key, iv, &n, BF_DECRYPT);
    BF_cfb64_encrypt(&(cbc_out[17]), &(cbc_in[17]), len - 17,
                     &key, iv, &n, BF_DECRYPT);
    if (!TEST_mem_eq(cbc_in, (int)len, cbc_data, (int)len))
        ret = 0;

    return ret;
}

static int test_bf_ofb64(void)
{
    unsigned char cbc_in[40], cbc_out[40], iv[8];
    int n, ret = 1;
    BF_KEY key;
    BF_LONG len;

    len = strlen(cbc_data) + 1;

    BF_set_key(&key, 16, cbc_key);
    memset(cbc_in, 0, 40);
    memset(cbc_out, 0, 40);
    memcpy(iv, cbc_iv, 8);
    n = 0;
    BF_ofb64_encrypt((unsigned char *)cbc_data, cbc_out, (long)13, &key, iv,
                     &n);
    BF_ofb64_encrypt((unsigned char *)&(cbc_data[13]), &(cbc_out[13]),
                     len - 13, &key, iv, &n);
    if (!TEST_mem_eq(cbc_out, (int)len, ofb64_ok, (int)len))
        ret = 0;

    n = 0;
    memcpy(iv, cbc_iv, 8);
    BF_ofb64_encrypt(cbc_out, cbc_in, 17, &key, iv, &n);
    BF_ofb64_encrypt(&(cbc_out[17]), &(cbc_in[17]), len - 17, &key, iv, &n);
    if (!TEST_mem_eq(cbc_in, (int)len, cbc_data, (int)len))
        ret = 0;

    return ret;
}
#endif

typedef enum OPTION_choice {
    OPT_ERR = -1,
    OPT_EOF = 0,
    OPT_PRINT,
    OPT_TEST_ENUM
} OPTION_CHOICE;

const OPTIONS *test_get_options(void)
{
    static const OPTIONS test_options[] = {
        OPT_TEST_OPTIONS_DEFAULT_USAGE,
        { "print", OPT_PRINT, '-', "Output test tables instead of running tests"},
        { NULL }
    };
    return test_options;
}

int setup_tests(void)
{
#ifndef OPENSSL_NO_BF
    OPTION_CHOICE o;
# ifdef CHARSET_EBCDIC
    int n;
    ebcdic2ascii(cbc_data, cbc_data, strlen(cbc_data));
    for (n = 0; n < 2; n++) {
        ebcdic2ascii(bf_key[n], bf_key[n], strlen(bf_key[n]));
    }
# endif

    while ((o = opt_next()) != OPT_EOF) {
        switch (o) {
        case OPT_PRINT:
            print_test_data();
            return 1;
        case OPT_TEST_CASES:
            break;
        default:
           return 0;
        }
    }

    ADD_ALL_TESTS(test_bf_ecb_raw, 2);
    ADD_ALL_TESTS(test_bf_ecb, NUM_TESTS);
    ADD_ALL_TESTS(test_bf_set_key, KEY_TEST_NUM-1);
    ADD_TEST(test_bf_cbc);
    ADD_TEST(test_bf_cfb64);
    ADD_TEST(test_bf_ofb64);
#endif
    return 1;
}