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/*
* Copyright 2006-2017 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
*/
/* ====================================================================
* Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
*/
#include "internal/cryptlib.h"
#ifndef OPENSSL_NO_ARIA
# include <openssl/evp.h>
# include <openssl/modes.h>
# include"internal/aria.h"
# include "internal/evp_int.h"
/* ARIA subkey Structure */
typedef struct {
ARIA_KEY ks;
} EVP_ARIA_KEY;
/* The subkey for ARIA is generated. */
static int aria_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret;
int mode = EVP_CIPHER_CTX_mode(ctx);
if (enc || (mode != EVP_CIPH_ECB_MODE && mode != EVP_CIPH_CBC_MODE))
ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
EVP_CIPHER_CTX_get_cipher_data(ctx));
else
ret = aria_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
EVP_CIPHER_CTX_get_cipher_data(ctx));
if (ret < 0) {
EVPerr(EVP_F_ARIA_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
static void aria_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const ARIA_KEY *key,
unsigned char *ivec, const int enc)
{
if (enc)
CRYPTO_cbc128_encrypt(in, out, len, key, ivec,
(block128_f) aria_encrypt);
else
CRYPTO_cbc128_decrypt(in, out, len, key, ivec,
(block128_f) aria_encrypt);
}
static void aria_cfb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const ARIA_KEY *key,
unsigned char *ivec, int *num, const int enc)
{
CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc,
(block128_f) aria_encrypt);
}
static void aria_cfb1_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const ARIA_KEY *key,
unsigned char *ivec, int *num, const int enc)
{
CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc,
(block128_f) aria_encrypt);
}
static void aria_cfb8_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const ARIA_KEY *key,
unsigned char *ivec, int *num, const int enc)
{
CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc,
(block128_f) aria_encrypt);
}
static void aria_ecb_encrypt(const unsigned char *in, unsigned char *out,
const ARIA_KEY *key, const int enc)
{
aria_encrypt(in, out, key);
}
static void aria_ofb128_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const ARIA_KEY *key,
unsigned char *ivec, int *num)
{
CRYPTO_ofb128_encrypt(in, out, length, key, ivec, num,
(block128_f) aria_encrypt);
}
IMPLEMENT_BLOCK_CIPHER(aria_128, ks, aria, EVP_ARIA_KEY,
NID_aria_128, 16, 16, 16, 128,
0, aria_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
IMPLEMENT_BLOCK_CIPHER(aria_192, ks, aria, EVP_ARIA_KEY,
NID_aria_192, 16, 24, 16, 128,
0, aria_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
IMPLEMENT_BLOCK_CIPHER(aria_256, ks, aria, EVP_ARIA_KEY,
NID_aria_256, 16, 32, 16, 128,
0, aria_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
# define IMPLEMENT_ARIA_CFBR(ksize,cbits) \
IMPLEMENT_CFBR(aria,aria,EVP_ARIA_KEY,ks,ksize,cbits,16,0)
IMPLEMENT_ARIA_CFBR(128,1)
IMPLEMENT_ARIA_CFBR(192,1)
IMPLEMENT_ARIA_CFBR(256,1)
IMPLEMENT_ARIA_CFBR(128,8)
IMPLEMENT_ARIA_CFBR(192,8)
IMPLEMENT_ARIA_CFBR(256,8)
# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
static const EVP_CIPHER aria_##keylen##_##mode = { \
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
flags|EVP_CIPH_##MODE##_MODE, \
aria_init_key, \
aria_##mode##_cipher, \
NULL, \
sizeof(EVP_ARIA_KEY), \
NULL,NULL,NULL,NULL }; \
const EVP_CIPHER *EVP_aria_##keylen##_##mode(void) \
{ return &aria_##keylen##_##mode; }
static int aria_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
unsigned int num = EVP_CIPHER_CTX_num(ctx);
EVP_ARIA_KEY *dat = EVP_C_DATA(EVP_ARIA_KEY,ctx);
CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
EVP_CIPHER_CTX_iv_noconst(ctx),
EVP_CIPHER_CTX_buf_noconst(ctx), &num,
(block128_f) aria_encrypt);
EVP_CIPHER_CTX_set_num(ctx, num);
return 1;
}
BLOCK_CIPHER_generic(NID_aria, 128, 1, 16, ctr, ctr, CTR, 0)
BLOCK_CIPHER_generic(NID_aria, 192, 1, 16, ctr, ctr, CTR, 0)
BLOCK_CIPHER_generic(NID_aria, 256, 1, 16, ctr, ctr, CTR, 0)
#endif
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