mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
33388b44b6
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11616)
60 lines
1.7 KiB
C
60 lines
1.7 KiB
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
|
|
*/
|
|
|
|
/*
|
|
* DES low level APIs are deprecated for public use, but still ok for internal
|
|
* use.
|
|
*/
|
|
#include "internal/deprecated.h"
|
|
|
|
#include "des_local.h"
|
|
|
|
DES_LONG DES_cbc_cksum(const unsigned char *in, DES_cblock *output,
|
|
long length, DES_key_schedule *schedule,
|
|
const_DES_cblock *ivec)
|
|
{
|
|
register DES_LONG tout0, tout1, tin0, tin1;
|
|
register long l = length;
|
|
DES_LONG tin[2];
|
|
unsigned char *out = &(*output)[0];
|
|
const unsigned char *iv = &(*ivec)[0];
|
|
|
|
c2l(iv, tout0);
|
|
c2l(iv, tout1);
|
|
for (; l > 0; l -= 8) {
|
|
if (l >= 8) {
|
|
c2l(in, tin0);
|
|
c2l(in, tin1);
|
|
} else
|
|
c2ln(in, tin0, tin1, l);
|
|
|
|
tin0 ^= tout0;
|
|
tin[0] = tin0;
|
|
tin1 ^= tout1;
|
|
tin[1] = tin1;
|
|
DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT);
|
|
tout0 = tin[0];
|
|
tout1 = tin[1];
|
|
}
|
|
if (out != NULL) {
|
|
l2c(tout0, out);
|
|
l2c(tout1, out);
|
|
}
|
|
tout0 = tin0 = tin1 = tin[0] = tin[1] = 0;
|
|
/*
|
|
* Transform the data in tout1 so that it will match the return value
|
|
* that the MIT Kerberos mit_des_cbc_cksum API returns.
|
|
*/
|
|
tout1 = ((tout1 >> 24L) & 0x000000FF)
|
|
| ((tout1 >> 8L) & 0x0000FF00)
|
|
| ((tout1 << 8L) & 0x00FF0000)
|
|
| ((tout1 << 24L) & 0xFF000000);
|
|
return tout1;
|
|
}
|