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/*
* Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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
*/
#include <openssl/opensslconf.h>
#ifdef OPENSSL_NO_CAMELLIA
NON_EMPTY_TRANSLATION_UNIT
#else
# include <openssl/evp.h>
# include <openssl/err.h>
# include <string.h>
# include <assert.h>
# include <openssl/camellia.h>
# include "internal/evp_int.h"
# include "modes_lcl.h"
static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
/* Camellia subkey Structure */
typedef struct {
CAMELLIA_KEY ks;
block128_f block;
union {
cbc128_f cbc;
ctr128_f ctr;
} stream;
} EVP_CAMELLIA_KEY;
# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
/* Attribute operation for Camellia */
# define data(ctx) EVP_C_DATA(EVP_CAMELLIA_KEY,ctx)
# if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
/* ---------^^^ this is not a typo, just a way to detect that
* assembler support was in general requested... */
# include "sparc_arch.h"
extern unsigned int OPENSSL_sparcv9cap_P[];
# define SPARC_CMLL_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_CAMELLIA)
void cmll_t4_set_key(const unsigned char *key, int bits, CAMELLIA_KEY *ks);
void cmll_t4_encrypt(const unsigned char *in, unsigned char *out,
const CAMELLIA_KEY *key);
void cmll_t4_decrypt(const unsigned char *in, unsigned char *out,
const CAMELLIA_KEY *key);
void cmll128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const CAMELLIA_KEY *key,
unsigned char *ivec);
void cmll128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
size_t len, const CAMELLIA_KEY *key,
unsigned char *ivec);
void cmll256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const CAMELLIA_KEY *key,
unsigned char *ivec);
void cmll256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
size_t len, const CAMELLIA_KEY *key,
unsigned char *ivec);
void cmll128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
size_t blocks, const CAMELLIA_KEY *key,
unsigned char *ivec);
void cmll256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
size_t blocks, const CAMELLIA_KEY *key,
unsigned char *ivec);
static int cmll_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret, mode, bits;
EVP_CAMELLIA_KEY *dat =
(EVP_CAMELLIA_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx);
mode = EVP_CIPHER_CTX_mode(ctx);
bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
cmll_t4_set_key(key, bits, &dat->ks);
if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
&& !enc) {
ret = 0;
dat->block = (block128_f) cmll_t4_decrypt;
switch (bits) {
case 128:
dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
(cbc128_f) cmll128_t4_cbc_decrypt : NULL;
break;
case 192:
case 256:
dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
(cbc128_f) cmll256_t4_cbc_decrypt : NULL;
break;
default:
ret = -1;
}
} else {
ret = 0;
dat->block = (block128_f) cmll_t4_encrypt;
switch (bits) {
case 128:
if (mode == EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f) cmll128_t4_cbc_encrypt;
else if (mode == EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f) cmll128_t4_ctr32_encrypt;
else
dat->stream.cbc = NULL;
break;
case 192:
case 256:
if (mode == EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f) cmll256_t4_cbc_encrypt;
else if (mode == EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f) cmll256_t4_ctr32_encrypt;
else
dat->stream.cbc = NULL;
break;
default:
ret = -1;
}
}
if (ret < 0) {
EVPerr(EVP_F_CMLL_T4_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
# define cmll_t4_cbc_cipher camellia_cbc_cipher
static int cmll_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_ecb_cipher camellia_ecb_cipher
static int cmll_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_ofb_cipher camellia_ofb_cipher
static int cmll_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_cfb_cipher camellia_cfb_cipher
static int cmll_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_cfb8_cipher camellia_cfb8_cipher
static int cmll_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_cfb1_cipher camellia_cfb1_cipher
static int cmll_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define cmll_t4_ctr_cipher camellia_ctr_cipher
static int cmll_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
static const EVP_CIPHER cmll_t4_##keylen##_##mode = { \
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
flags|EVP_CIPH_##MODE##_MODE, \
cmll_t4_init_key, \
cmll_t4_##mode##_cipher, \
NULL, \
sizeof(EVP_CAMELLIA_KEY), \
NULL,NULL,NULL,NULL }; \
static const EVP_CIPHER camellia_##keylen##_##mode = { \
nid##_##keylen##_##nmode,blocksize, \
keylen/8,ivlen, \
flags|EVP_CIPH_##MODE##_MODE, \
camellia_init_key, \
camellia_##mode##_cipher, \
NULL, \
sizeof(EVP_CAMELLIA_KEY), \
NULL,NULL,NULL,NULL }; \
const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
{ return SPARC_CMLL_CAPABLE?&cmll_t4_##keylen##_##mode:&camellia_##keylen##_##mode; }
# else
# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
static const EVP_CIPHER camellia_##keylen##_##mode = { \
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
flags|EVP_CIPH_##MODE##_MODE, \
camellia_init_key, \
camellia_##mode##_cipher, \
NULL, \
sizeof(EVP_CAMELLIA_KEY), \
NULL,NULL,NULL,NULL }; \
const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
{ return &camellia_##keylen##_##mode; }
# endif
# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
BLOCK_CIPHER_generic(nid, keylen, 1, 16, ctr, ctr, CTR, flags)
/* The subkey for Camellia is generated. */
static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret, mode;
EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
ret = Camellia_set_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &dat->ks);
if (ret < 0) {
EVPerr(EVP_F_CAMELLIA_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
return 0;
}
mode = EVP_CIPHER_CTX_mode(ctx);
if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
&& !enc) {
dat->block = (block128_f) Camellia_decrypt;
dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
(cbc128_f) Camellia_cbc_encrypt : NULL;
} else {
dat->block = (
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