|
Packit |
c4476c |
/*
|
|
Packit |
c4476c |
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
Packit |
c4476c |
*
|
|
Packit |
c4476c |
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
Packit |
c4476c |
* this file except in compliance with the License. You can obtain a copy
|
|
Packit |
c4476c |
* in the file LICENSE in the source distribution or at
|
|
Packit |
c4476c |
* https://www.openssl.org/source/license.html
|
|
Packit |
c4476c |
*/
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
#include <openssl/idea.h>
|
|
Packit |
c4476c |
#include "idea_local.h"
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
void IDEA_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
|
Packit |
c4476c |
long length, IDEA_KEY_SCHEDULE *ks, unsigned char *iv,
|
|
Packit |
c4476c |
int encrypt)
|
|
Packit |
c4476c |
{
|
|
Packit |
c4476c |
register unsigned long tin0, tin1;
|
|
Packit |
c4476c |
register unsigned long tout0, tout1, xor0, xor1;
|
|
Packit |
c4476c |
register long l = length;
|
|
Packit |
c4476c |
unsigned long tin[2];
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
if (encrypt) {
|
|
Packit |
c4476c |
n2l(iv, tout0);
|
|
Packit |
c4476c |
n2l(iv, tout1);
|
|
Packit |
c4476c |
iv -= 8;
|
|
Packit |
c4476c |
for (l -= 8; l >= 0; l -= 8) {
|
|
Packit |
c4476c |
n2l(in, tin0);
|
|
Packit |
c4476c |
n2l(in, tin1);
|
|
Packit |
c4476c |
tin0 ^= tout0;
|
|
Packit |
c4476c |
tin1 ^= tout1;
|
|
Packit |
c4476c |
tin[0] = tin0;
|
|
Packit |
c4476c |
tin[1] = tin1;
|
|
Packit |
c4476c |
IDEA_encrypt(tin, ks);
|
|
Packit |
c4476c |
tout0 = tin[0];
|
|
Packit |
c4476c |
l2n(tout0, out);
|
|
Packit |
c4476c |
tout1 = tin[1];
|
|
Packit |
c4476c |
l2n(tout1, out);
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
if (l != -8) {
|
|
Packit |
c4476c |
n2ln(in, tin0, tin1, l + 8);
|
|
Packit |
c4476c |
tin0 ^= tout0;
|
|
Packit |
c4476c |
tin1 ^= tout1;
|
|
Packit |
c4476c |
tin[0] = tin0;
|
|
Packit |
c4476c |
tin[1] = tin1;
|
|
Packit |
c4476c |
IDEA_encrypt(tin, ks);
|
|
Packit |
c4476c |
tout0 = tin[0];
|
|
Packit |
c4476c |
l2n(tout0, out);
|
|
Packit |
c4476c |
tout1 = tin[1];
|
|
Packit |
c4476c |
l2n(tout1, out);
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
l2n(tout0, iv);
|
|
Packit |
c4476c |
l2n(tout1, iv);
|
|
Packit |
c4476c |
} else {
|
|
Packit |
c4476c |
n2l(iv, xor0);
|
|
Packit |
c4476c |
n2l(iv, xor1);
|
|
Packit |
c4476c |
iv -= 8;
|
|
Packit |
c4476c |
for (l -= 8; l >= 0; l -= 8) {
|
|
Packit |
c4476c |
n2l(in, tin0);
|
|
Packit |
c4476c |
tin[0] = tin0;
|
|
Packit |
c4476c |
n2l(in, tin1);
|
|
Packit |
c4476c |
tin[1] = tin1;
|
|
Packit |
c4476c |
IDEA_encrypt(tin, ks);
|
|
Packit |
c4476c |
tout0 = tin[0] ^ xor0;
|
|
Packit |
c4476c |
tout1 = tin[1] ^ xor1;
|
|
Packit |
c4476c |
l2n(tout0, out);
|
|
Packit |
c4476c |
l2n(tout1, out);
|
|
Packit |
c4476c |
xor0 = tin0;
|
|
Packit |
c4476c |
xor1 = tin1;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
if (l != -8) {
|
|
Packit |
c4476c |
n2l(in, tin0);
|
|
Packit |
c4476c |
tin[0] = tin0;
|
|
Packit |
c4476c |
n2l(in, tin1);
|
|
Packit |
c4476c |
tin[1] = tin1;
|
|
Packit |
c4476c |
IDEA_encrypt(tin, ks);
|
|
Packit |
c4476c |
tout0 = tin[0] ^ xor0;
|
|
Packit |
c4476c |
tout1 = tin[1] ^ xor1;
|
|
Packit |
c4476c |
l2nn(tout0, tout1, out, l + 8);
|
|
Packit |
c4476c |
xor0 = tin0;
|
|
Packit |
c4476c |
xor1 = tin1;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
l2n(xor0, iv);
|
|
Packit |
c4476c |
l2n(xor1, iv);
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
|
|
Packit |
c4476c |
tin[0] = tin[1] = 0;
|
|
Packit |
c4476c |
}
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
void IDEA_encrypt(unsigned long *d, IDEA_KEY_SCHEDULE *key)
|
|
Packit |
c4476c |
{
|
|
Packit |
c4476c |
register IDEA_INT *p;
|
|
Packit |
c4476c |
register unsigned long x1, x2, x3, x4, t0, t1, ul;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
x2 = d[0];
|
|
Packit |
c4476c |
x1 = (x2 >> 16);
|
|
Packit |
c4476c |
x4 = d[1];
|
|
Packit |
c4476c |
x3 = (x4 >> 16);
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
p = &(key->data[0][0]);
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
E_IDEA(0);
|
|
Packit |
c4476c |
E_IDEA(1);
|
|
Packit |
c4476c |
E_IDEA(2);
|
|
Packit |
c4476c |
E_IDEA(3);
|
|
Packit |
c4476c |
E_IDEA(4);
|
|
Packit |
c4476c |
E_IDEA(5);
|
|
Packit |
c4476c |
E_IDEA(6);
|
|
Packit |
c4476c |
E_IDEA(7);
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
x1 &= 0xffff;
|
|
Packit |
c4476c |
idea_mul(x1, x1, *p, ul);
|
|
Packit |
c4476c |
p++;
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
t0 = x3 + *(p++);
|
|
Packit |
c4476c |
t1 = x2 + *(p++);
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
x4 &= 0xffff;
|
|
Packit |
c4476c |
idea_mul(x4, x4, *p, ul);
|
|
Packit |
c4476c |
|
|
Packit |
c4476c |
d[0] = (t0 & 0xffff) | ((x1 & 0xffff) << 16);
|
|
Packit |
c4476c |
d[1] = (x4 & 0xffff) | ((t1 & 0xffff) << 16);
|
|
Packit |
c4476c |
}
|