2 * Copyright (c) 2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <krb5-types.h>
42 #include "camellia-ntt.h"
48 CAMELLIA_set_key(const unsigned char *userkey
,
49 const int bits
, CAMELLIA_KEY
*key
)
52 Camellia_Ekeygen(bits
, userkey
, key
->key
);
57 CAMELLIA_encrypt(const unsigned char *in
, unsigned char *out
,
58 const CAMELLIA_KEY
*key
)
60 Camellia_EncryptBlock(key
->bits
, in
, key
->key
, out
);
65 CAMELLIA_decrypt(const unsigned char *in
, unsigned char *out
,
66 const CAMELLIA_KEY
*key
)
68 Camellia_DecryptBlock(key
->bits
, in
, key
->key
, out
);
72 CAMELLIA_cbc_encrypt(const unsigned char *in
, unsigned char *out
,
73 unsigned long size
, const CAMELLIA_KEY
*key
,
74 unsigned char *iv
, int mode_encrypt
)
76 unsigned char tmp
[CAMELLIA_BLOCK_SIZE
];
80 while (size
>= CAMELLIA_BLOCK_SIZE
) {
81 for (i
= 0; i
< CAMELLIA_BLOCK_SIZE
; i
++)
82 tmp
[i
] = in
[i
] ^ iv
[i
];
83 CAMELLIA_encrypt(tmp
, out
, key
);
84 memcpy(iv
, out
, CAMELLIA_BLOCK_SIZE
);
85 size
-= CAMELLIA_BLOCK_SIZE
;
86 in
+= CAMELLIA_BLOCK_SIZE
;
87 out
+= CAMELLIA_BLOCK_SIZE
;
90 for (i
= 0; i
< size
; i
++)
91 tmp
[i
] = in
[i
] ^ iv
[i
];
92 for (i
= size
; i
< CAMELLIA_BLOCK_SIZE
; i
++)
94 CAMELLIA_encrypt(tmp
, out
, key
);
95 memcpy(iv
, out
, CAMELLIA_BLOCK_SIZE
);
98 while (size
>= CAMELLIA_BLOCK_SIZE
) {
99 memcpy(tmp
, in
, CAMELLIA_BLOCK_SIZE
);
100 CAMELLIA_decrypt(tmp
, out
, key
);
101 for (i
= 0; i
< CAMELLIA_BLOCK_SIZE
; i
++)
103 memcpy(iv
, tmp
, CAMELLIA_BLOCK_SIZE
);
104 size
-= CAMELLIA_BLOCK_SIZE
;
105 in
+= CAMELLIA_BLOCK_SIZE
;
106 out
+= CAMELLIA_BLOCK_SIZE
;
109 memcpy(tmp
, in
, CAMELLIA_BLOCK_SIZE
);
110 CAMELLIA_decrypt(tmp
, out
, key
);
111 for (i
= 0; i
< size
; i
++)
113 memcpy(iv
, tmp
, CAMELLIA_BLOCK_SIZE
);