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366 lines
14 KiB
C
366 lines
14 KiB
C
/*
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* Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/opensslconf.h>
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#ifdef OPENSSL_NO_CAMELLIA
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NON_EMPTY_TRANSLATION_UNIT
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#else
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# include <openssl/evp.h>
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# include <openssl/err.h>
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# include <string.h>
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# include <assert.h>
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# include <openssl/camellia.h>
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# include "crypto/evp.h"
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# include "modes_local.h"
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static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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/* Camellia subkey Structure */
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typedef struct {
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CAMELLIA_KEY ks;
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block128_f block;
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union {
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cbc128_f cbc;
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ctr128_f ctr;
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} stream;
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} EVP_CAMELLIA_KEY;
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# define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
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/* Attribute operation for Camellia */
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# define data(ctx) EVP_C_DATA(EVP_CAMELLIA_KEY,ctx)
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# if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
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/* ---------^^^ this is not a typo, just a way to detect that
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* assembler support was in general requested... */
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# include "sparc_arch.h"
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extern unsigned int OPENSSL_sparcv9cap_P[];
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# define SPARC_CMLL_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_CAMELLIA)
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void cmll_t4_set_key(const unsigned char *key, int bits, CAMELLIA_KEY *ks);
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void cmll_t4_encrypt(const unsigned char *in, unsigned char *out,
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const CAMELLIA_KEY *key);
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void cmll_t4_decrypt(const unsigned char *in, unsigned char *out,
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const CAMELLIA_KEY *key);
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void cmll128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
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size_t len, const CAMELLIA_KEY *key,
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unsigned char *ivec, int /*unused*/);
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void cmll128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
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size_t len, const CAMELLIA_KEY *key,
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unsigned char *ivec, int /*unused*/);
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void cmll256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
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size_t len, const CAMELLIA_KEY *key,
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unsigned char *ivec, int /*unused*/);
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void cmll256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
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size_t len, const CAMELLIA_KEY *key,
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unsigned char *ivec, int /*unused*/);
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void cmll128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
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size_t blocks, const CAMELLIA_KEY *key,
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unsigned char *ivec);
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void cmll256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
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size_t blocks, const CAMELLIA_KEY *key,
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unsigned char *ivec);
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static int cmll_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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int ret, mode, bits;
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EVP_CAMELLIA_KEY *dat =
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(EVP_CAMELLIA_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx);
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mode = EVP_CIPHER_CTX_mode(ctx);
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bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
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cmll_t4_set_key(key, bits, &dat->ks);
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if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
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&& !enc) {
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ret = 0;
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dat->block = (block128_f) cmll_t4_decrypt;
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switch (bits) {
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case 128:
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dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
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(cbc128_f) cmll128_t4_cbc_decrypt : NULL;
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break;
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case 192:
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case 256:
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dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
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(cbc128_f) cmll256_t4_cbc_decrypt : NULL;
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break;
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default:
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ret = -1;
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}
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} else {
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ret = 0;
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dat->block = (block128_f) cmll_t4_encrypt;
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switch (bits) {
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case 128:
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if (mode == EVP_CIPH_CBC_MODE)
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dat->stream.cbc = (cbc128_f) cmll128_t4_cbc_encrypt;
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else if (mode == EVP_CIPH_CTR_MODE)
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dat->stream.ctr = (ctr128_f) cmll128_t4_ctr32_encrypt;
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else
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dat->stream.cbc = NULL;
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break;
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case 192:
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case 256:
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if (mode == EVP_CIPH_CBC_MODE)
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dat->stream.cbc = (cbc128_f) cmll256_t4_cbc_encrypt;
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else if (mode == EVP_CIPH_CTR_MODE)
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dat->stream.ctr = (ctr128_f) cmll256_t4_ctr32_encrypt;
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else
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dat->stream.cbc = NULL;
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break;
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default:
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ret = -1;
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}
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}
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if (ret < 0) {
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EVPerr(EVP_F_CMLL_T4_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
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return 0;
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}
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return 1;
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}
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# define cmll_t4_cbc_cipher camellia_cbc_cipher
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static int cmll_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_ecb_cipher camellia_ecb_cipher
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static int cmll_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_ofb_cipher camellia_ofb_cipher
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static int cmll_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_cfb_cipher camellia_cfb_cipher
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static int cmll_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_cfb8_cipher camellia_cfb8_cipher
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static int cmll_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_cfb1_cipher camellia_cfb1_cipher
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static int cmll_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define cmll_t4_ctr_cipher camellia_ctr_cipher
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static int cmll_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len);
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# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
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static const EVP_CIPHER cmll_t4_##keylen##_##mode = { \
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nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
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flags|EVP_CIPH_##MODE##_MODE, \
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cmll_t4_init_key, \
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cmll_t4_##mode##_cipher, \
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NULL, \
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sizeof(EVP_CAMELLIA_KEY), \
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NULL,NULL,NULL,NULL }; \
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static const EVP_CIPHER camellia_##keylen##_##mode = { \
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nid##_##keylen##_##nmode,blocksize, \
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keylen/8,ivlen, \
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flags|EVP_CIPH_##MODE##_MODE, \
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camellia_init_key, \
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camellia_##mode##_cipher, \
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NULL, \
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sizeof(EVP_CAMELLIA_KEY), \
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NULL,NULL,NULL,NULL }; \
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const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
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{ return SPARC_CMLL_CAPABLE?&cmll_t4_##keylen##_##mode:&camellia_##keylen##_##mode; }
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# else
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# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
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static const EVP_CIPHER camellia_##keylen##_##mode = { \
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nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
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flags|EVP_CIPH_##MODE##_MODE, \
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camellia_init_key, \
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camellia_##mode##_cipher, \
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NULL, \
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sizeof(EVP_CAMELLIA_KEY), \
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NULL,NULL,NULL,NULL }; \
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const EVP_CIPHER *EVP_camellia_##keylen##_##mode(void) \
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{ return &camellia_##keylen##_##mode; }
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# endif
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# define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
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BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
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BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
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BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
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BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
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BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
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BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
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BLOCK_CIPHER_generic(nid, keylen, 1, 16, ctr, ctr, CTR, flags)
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/* The subkey for Camellia is generated. */
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static int camellia_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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int ret, mode;
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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ret = Camellia_set_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8, &dat->ks);
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if (ret < 0) {
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EVPerr(EVP_F_CAMELLIA_INIT_KEY, EVP_R_CAMELLIA_KEY_SETUP_FAILED);
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return 0;
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}
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mode = EVP_CIPHER_CTX_mode(ctx);
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if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
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&& !enc) {
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dat->block = (block128_f) Camellia_decrypt;
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dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
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(cbc128_f) Camellia_cbc_encrypt : NULL;
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} else {
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dat->block = (block128_f) Camellia_encrypt;
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dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
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(cbc128_f) Camellia_cbc_encrypt : NULL;
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}
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return 1;
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}
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static int camellia_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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if (dat->stream.cbc)
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(*dat->stream.cbc) (in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx),
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EVP_CIPHER_CTX_encrypting(ctx));
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else if (EVP_CIPHER_CTX_encrypting(ctx))
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CRYPTO_cbc128_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
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else
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CRYPTO_cbc128_decrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
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return 1;
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}
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static int camellia_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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size_t bl = EVP_CIPHER_CTX_block_size(ctx);
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size_t i;
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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if (len < bl)
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return 1;
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for (i = 0, len -= bl; i <= len; i += bl)
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(*dat->block) (in + i, out + i, &dat->ks);
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return 1;
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}
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static int camellia_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_ofb128_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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return 1;
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}
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static int camellia_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_cfb128_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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return 1;
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}
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static int camellia_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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return 1;
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}
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static int camellia_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) {
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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return 1;
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}
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while (len >= MAXBITCHUNK) {
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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len -= MAXBITCHUNK;
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out += MAXBITCHUNK;
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in += MAXBITCHUNK;
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}
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if (len) {
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int num = EVP_CIPHER_CTX_num(ctx);
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CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx), &num, EVP_CIPHER_CTX_encrypting(ctx), dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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}
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return 1;
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}
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static int camellia_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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unsigned int num = EVP_CIPHER_CTX_num(ctx);
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EVP_CAMELLIA_KEY *dat = EVP_C_DATA(EVP_CAMELLIA_KEY,ctx);
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if (dat->stream.ctr)
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CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx),
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EVP_CIPHER_CTX_buf_noconst(ctx), &num,
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dat->stream.ctr);
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else
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CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx),
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EVP_CIPHER_CTX_buf_noconst(ctx), &num,
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dat->block);
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EVP_CIPHER_CTX_set_num(ctx, num);
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return 1;
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}
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BLOCK_CIPHER_generic_pack(NID_camellia, 128, 0)
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BLOCK_CIPHER_generic_pack(NID_camellia, 192, 0)
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BLOCK_CIPHER_generic_pack(NID_camellia, 256, 0)
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#endif
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