A local copy of OpenSSL from GitHub
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/*
* 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];
}
}