/*

 * 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 <openssl/blowfish.h>

#include "bf_local.h"

#include "bf_pi.h"

void BF_set_key(BF_KEY *key, int len, const unsigned char *data)

{

    int i;

    BF_LONG *p, ri, in[2];

    const unsigned char *d, *end;

    memcpy(key, &bf_init, sizeof(BF_KEY));

    p = key->P;

    if (len > ((BF_ROUNDS + 2) * 4))

        len = (BF_ROUNDS + 2) * 4;

    d = data;

    end = &(data[len]);

    for (i = 0; i < (BF_ROUNDS + 2); i++) {

        ri = *(d++);

        if (d >= end)

            d = data;

        ri <<= 8;

        ri |= *(d++);

        if (d >= end)

            d = data;

        ri <<= 8;

        ri |= *(d++);

        if (d >= end)

            d = data;

        ri <<= 8;

        ri |= *(d++);

        if (d >= end)

            d = data;

        p[i] ^= ri;

    }

    in[0] = 0L;

    in[1] = 0L;

    for (i = 0; i < (BF_ROUNDS + 2); i += 2) {

        BF_encrypt(in, key);

        p[i] = in[0];

        p[i + 1] = in[1];

    }

    p = key->S;

    for (i = 0; i < 4 * 256; i += 2) {

        BF_encrypt(in, key);

        p[i] = in[0];

        p[i + 1] = in[1];

    }

}