6decf9436f
Fixes #4403 This commit moves the internal header file "internal/rand.h" to <openssl/rand_drbg.h>, making the RAND_DRBG API public. The RAND_POOL API remains private, its function prototypes were moved to "internal/rand_int.h" and converted to lowercase. Documentation for the new API is work in progress on GitHub #5461. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/5462)
759 lines
25 KiB
C
759 lines
25 KiB
C
/*
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* Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2017, Oracle and/or its affiliates. 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 "internal/cryptlib.h"
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#ifndef OPENSSL_NO_ARIA
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# include <openssl/evp.h>
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# include <openssl/modes.h>
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# include <openssl/rand.h>
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# include <openssl/rand_drbg.h>
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# include "internal/aria.h"
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# include "internal/evp_int.h"
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# include "modes_lcl.h"
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# include "evp_locl.h"
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/* ARIA subkey Structure */
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typedef struct {
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ARIA_KEY ks;
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} EVP_ARIA_KEY;
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/* ARIA GCM context */
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typedef struct {
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union {
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double align;
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ARIA_KEY ks;
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} ks; /* ARIA subkey to use */
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int key_set; /* Set if key initialised */
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int iv_set; /* Set if an iv is set */
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GCM128_CONTEXT gcm;
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unsigned char *iv; /* Temporary IV store */
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int ivlen; /* IV length */
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int taglen;
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int iv_gen; /* It is OK to generate IVs */
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int tls_aad_len; /* TLS AAD length */
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} EVP_ARIA_GCM_CTX;
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/* ARIA CCM context */
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typedef struct {
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union {
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double align;
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ARIA_KEY ks;
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} ks; /* ARIA key schedule to use */
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int key_set; /* Set if key initialised */
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int iv_set; /* Set if an iv is set */
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int tag_set; /* Set if tag is valid */
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int len_set; /* Set if message length set */
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int L, M; /* L and M parameters from RFC3610 */
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int tls_aad_len; /* TLS AAD length */
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CCM128_CONTEXT ccm;
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ccm128_f str;
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} EVP_ARIA_CCM_CTX;
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/* The subkey for ARIA is generated. */
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static int aria_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;
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int mode = EVP_CIPHER_CTX_mode(ctx);
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if (enc || (mode != EVP_CIPH_ECB_MODE && mode != EVP_CIPH_CBC_MODE))
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ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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EVP_CIPHER_CTX_get_cipher_data(ctx));
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else
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ret = aria_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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EVP_CIPHER_CTX_get_cipher_data(ctx));
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if (ret < 0) {
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EVPerr(EVP_F_ARIA_INIT_KEY,EVP_R_ARIA_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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static void aria_cbc_encrypt(const unsigned char *in, unsigned char *out,
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size_t len, const ARIA_KEY *key,
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unsigned char *ivec, const int enc)
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{
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if (enc)
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CRYPTO_cbc128_encrypt(in, out, len, key, ivec,
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(block128_f) aria_encrypt);
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else
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CRYPTO_cbc128_decrypt(in, out, len, key, ivec,
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(block128_f) aria_encrypt);
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}
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static void aria_cfb128_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const ARIA_KEY *key,
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unsigned char *ivec, int *num, const int enc)
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{
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CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc,
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(block128_f) aria_encrypt);
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}
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static void aria_cfb1_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const ARIA_KEY *key,
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unsigned char *ivec, int *num, const int enc)
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{
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CRYPTO_cfb128_1_encrypt(in, out, length, key, ivec, num, enc,
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(block128_f) aria_encrypt);
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}
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static void aria_cfb8_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const ARIA_KEY *key,
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unsigned char *ivec, int *num, const int enc)
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{
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CRYPTO_cfb128_8_encrypt(in, out, length, key, ivec, num, enc,
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(block128_f) aria_encrypt);
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}
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static void aria_ecb_encrypt(const unsigned char *in, unsigned char *out,
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const ARIA_KEY *key, const int enc)
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{
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aria_encrypt(in, out, key);
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}
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static void aria_ofb128_encrypt(const unsigned char *in, unsigned char *out,
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size_t length, const ARIA_KEY *key,
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unsigned char *ivec, int *num)
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{
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CRYPTO_ofb128_encrypt(in, out, length, key, ivec, num,
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(block128_f) aria_encrypt);
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}
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IMPLEMENT_BLOCK_CIPHER(aria_128, ks, aria, EVP_ARIA_KEY,
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NID_aria_128, 16, 16, 16, 128,
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0, aria_init_key, NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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NULL)
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IMPLEMENT_BLOCK_CIPHER(aria_192, ks, aria, EVP_ARIA_KEY,
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NID_aria_192, 16, 24, 16, 128,
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0, aria_init_key, NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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NULL)
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IMPLEMENT_BLOCK_CIPHER(aria_256, ks, aria, EVP_ARIA_KEY,
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NID_aria_256, 16, 32, 16, 128,
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0, aria_init_key, NULL,
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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NULL)
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# define IMPLEMENT_ARIA_CFBR(ksize,cbits) \
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IMPLEMENT_CFBR(aria,aria,EVP_ARIA_KEY,ks,ksize,cbits,16,0)
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IMPLEMENT_ARIA_CFBR(128,1)
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IMPLEMENT_ARIA_CFBR(192,1)
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IMPLEMENT_ARIA_CFBR(256,1)
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IMPLEMENT_ARIA_CFBR(128,8)
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IMPLEMENT_ARIA_CFBR(192,8)
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IMPLEMENT_ARIA_CFBR(256,8)
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# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
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static const EVP_CIPHER aria_##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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aria_init_key, \
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aria_##mode##_cipher, \
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NULL, \
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sizeof(EVP_ARIA_KEY), \
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NULL,NULL,NULL,NULL }; \
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const EVP_CIPHER *EVP_aria_##keylen##_##mode(void) \
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{ return &aria_##keylen##_##mode; }
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static int aria_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_ARIA_KEY *dat = EVP_C_DATA(EVP_ARIA_KEY,ctx);
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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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(block128_f) aria_encrypt);
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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(NID_aria, 128, 1, 16, ctr, ctr, CTR, 0)
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BLOCK_CIPHER_generic(NID_aria, 192, 1, 16, ctr, ctr, CTR, 0)
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BLOCK_CIPHER_generic(NID_aria, 256, 1, 16, ctr, ctr, CTR, 0)
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/* Authenticated cipher modes (GCM/CCM) */
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/* increment counter (64-bit int) by 1 */
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static void ctr64_inc(unsigned char *counter)
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{
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int n = 8;
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unsigned char c;
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do {
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--n;
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c = counter[n];
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++c;
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counter[n] = c;
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if (c)
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return;
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} while (n);
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}
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static int aria_gcm_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;
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EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx);
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if (!iv && !key)
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return 1;
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if (key) {
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ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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&gctx->ks.ks);
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CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
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(block128_f) aria_encrypt);
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if (ret < 0) {
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EVPerr(EVP_F_ARIA_GCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
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return 0;
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}
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/*
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* If we have an iv can set it directly, otherwise use saved IV.
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*/
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if (iv == NULL && gctx->iv_set)
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iv = gctx->iv;
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if (iv) {
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CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
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gctx->iv_set = 1;
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}
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gctx->key_set = 1;
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} else {
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/* If key set use IV, otherwise copy */
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if (gctx->key_set)
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CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
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else
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memcpy(gctx->iv, iv, gctx->ivlen);
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gctx->iv_set = 1;
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gctx->iv_gen = 0;
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}
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return 1;
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}
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static int aria_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
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{
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EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,c);
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switch (type) {
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case EVP_CTRL_INIT:
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gctx->key_set = 0;
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gctx->iv_set = 0;
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gctx->ivlen = EVP_CIPHER_CTX_iv_length(c);
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gctx->iv = EVP_CIPHER_CTX_iv_noconst(c);
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gctx->taglen = -1;
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gctx->iv_gen = 0;
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gctx->tls_aad_len = -1;
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return 1;
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case EVP_CTRL_AEAD_SET_IVLEN:
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if (arg <= 0)
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return 0;
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/* Allocate memory for IV if needed */
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if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
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if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
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OPENSSL_free(gctx->iv);
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gctx->iv = OPENSSL_malloc(arg);
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if (gctx->iv == NULL)
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return 0;
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}
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gctx->ivlen = arg;
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return 1;
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case EVP_CTRL_AEAD_SET_TAG:
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if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c))
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return 0;
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memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
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gctx->taglen = arg;
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return 1;
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case EVP_CTRL_AEAD_GET_TAG:
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if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c)
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|| gctx->taglen < 0)
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return 0;
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memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg);
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return 1;
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case EVP_CTRL_GCM_SET_IV_FIXED:
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/* Special case: -1 length restores whole IV */
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if (arg == -1) {
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memcpy(gctx->iv, ptr, gctx->ivlen);
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gctx->iv_gen = 1;
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return 1;
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}
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/*
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* Fixed field must be at least 4 bytes and invocation field at least
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* 8.
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*/
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if ((arg < 4) || (gctx->ivlen - arg) < 8)
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return 0;
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if (arg)
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memcpy(gctx->iv, ptr, arg);
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if (EVP_CIPHER_CTX_encrypting(c)) {
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if (c->drbg != NULL) {
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if (RAND_DRBG_bytes(c->drbg, gctx->iv + arg, gctx->ivlen - arg) == 0)
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return 0;
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} else if (RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0) {
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return 0;
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}
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}
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gctx->iv_gen = 1;
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return 1;
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case EVP_CTRL_GCM_IV_GEN:
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if (gctx->iv_gen == 0 || gctx->key_set == 0)
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return 0;
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CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
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if (arg <= 0 || arg > gctx->ivlen)
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arg = gctx->ivlen;
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memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
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/*
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* Invocation field will be at least 8 bytes in size and so no need
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* to check wrap around or increment more than last 8 bytes.
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*/
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ctr64_inc(gctx->iv + gctx->ivlen - 8);
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gctx->iv_set = 1;
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return 1;
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case EVP_CTRL_GCM_SET_IV_INV:
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if (gctx->iv_gen == 0 || gctx->key_set == 0
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|| EVP_CIPHER_CTX_encrypting(c))
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return 0;
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memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
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CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
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gctx->iv_set = 1;
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return 1;
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case EVP_CTRL_AEAD_TLS1_AAD:
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/* Save the AAD for later use */
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if (arg != EVP_AEAD_TLS1_AAD_LEN)
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return 0;
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memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
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gctx->tls_aad_len = arg;
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{
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unsigned int len =
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EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
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| EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
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/* Correct length for explicit IV */
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if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
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return 0;
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len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
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/* If decrypting correct for tag too */
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if (!EVP_CIPHER_CTX_encrypting(c)) {
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if (len < EVP_GCM_TLS_TAG_LEN)
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return 0;
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len -= EVP_GCM_TLS_TAG_LEN;
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}
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EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
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EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
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}
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/* Extra padding: tag appended to record */
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return EVP_GCM_TLS_TAG_LEN;
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case EVP_CTRL_COPY:
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{
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EVP_CIPHER_CTX *out = ptr;
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EVP_ARIA_GCM_CTX *gctx_out = EVP_C_DATA(EVP_ARIA_GCM_CTX,out);
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if (gctx->gcm.key) {
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if (gctx->gcm.key != &gctx->ks)
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return 0;
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gctx_out->gcm.key = &gctx_out->ks;
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}
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if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c))
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gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
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else {
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gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
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if (gctx_out->iv == NULL)
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return 0;
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memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
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}
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return 1;
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}
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default:
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return -1;
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}
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}
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static int aria_gcm_tls_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_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx);
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int rv = -1;
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/* Encrypt/decrypt must be performed in place */
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if (out != in
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|| len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
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return -1;
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/*
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* Set IV from start of buffer or generate IV and write to start of
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* buffer.
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*/
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if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ?
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EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
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EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
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goto err;
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/* Use saved AAD */
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if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
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gctx->tls_aad_len))
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goto err;
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/* Fix buffer and length to point to payload */
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in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
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out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
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len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
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if (EVP_CIPHER_CTX_encrypting(ctx)) {
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/* Encrypt payload */
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if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
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goto err;
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out += len;
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/* Finally write tag */
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CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
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rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
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} else {
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/* Decrypt */
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if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
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goto err;
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/* Retrieve tag */
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CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
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EVP_GCM_TLS_TAG_LEN);
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/* If tag mismatch wipe buffer */
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if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len,
|
|
EVP_GCM_TLS_TAG_LEN)) {
|
|
OPENSSL_cleanse(out, len);
|
|
goto err;
|
|
}
|
|
rv = len;
|
|
}
|
|
|
|
err:
|
|
gctx->iv_set = 0;
|
|
gctx->tls_aad_len = -1;
|
|
return rv;
|
|
}
|
|
|
|
static int aria_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx);
|
|
|
|
/* If not set up, return error */
|
|
if (!gctx->key_set)
|
|
return -1;
|
|
|
|
if (gctx->tls_aad_len >= 0)
|
|
return aria_gcm_tls_cipher(ctx, out, in, len);
|
|
|
|
if (!gctx->iv_set)
|
|
return -1;
|
|
if (in) {
|
|
if (out == NULL) {
|
|
if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
|
|
return -1;
|
|
} else if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
|
|
return -1;
|
|
} else {
|
|
if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
|
|
return -1;
|
|
}
|
|
return len;
|
|
}
|
|
if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
if (gctx->taglen < 0)
|
|
return -1;
|
|
if (CRYPTO_gcm128_finish(&gctx->gcm,
|
|
EVP_CIPHER_CTX_buf_noconst(ctx),
|
|
gctx->taglen) != 0)
|
|
return -1;
|
|
gctx->iv_set = 0;
|
|
return 0;
|
|
}
|
|
CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16);
|
|
gctx->taglen = 16;
|
|
/* Don't reuse the IV */
|
|
gctx->iv_set = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int aria_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
int ret;
|
|
EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,ctx);
|
|
|
|
if (!iv && !key)
|
|
return 1;
|
|
|
|
if (key) {
|
|
ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
|
&cctx->ks.ks);
|
|
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
|
&cctx->ks, (block128_f) aria_encrypt);
|
|
if (ret < 0) {
|
|
EVPerr(EVP_F_ARIA_CCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
|
|
return 0;
|
|
}
|
|
cctx->str = NULL;
|
|
cctx->key_set = 1;
|
|
}
|
|
if (iv) {
|
|
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
|
|
cctx->iv_set = 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int aria_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,c);
|
|
|
|
switch (type) {
|
|
case EVP_CTRL_INIT:
|
|
cctx->key_set = 0;
|
|
cctx->iv_set = 0;
|
|
cctx->L = 8;
|
|
cctx->M = 12;
|
|
cctx->tag_set = 0;
|
|
cctx->len_set = 0;
|
|
cctx->tls_aad_len = -1;
|
|
return 1;
|
|
|
|
case EVP_CTRL_AEAD_TLS1_AAD:
|
|
/* Save the AAD for later use */
|
|
if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
|
return 0;
|
|
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
|
cctx->tls_aad_len = arg;
|
|
{
|
|
uint16_t len =
|
|
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
|
|
| EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
|
|
/* Correct length for explicit IV */
|
|
if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
|
|
return 0;
|
|
len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
|
/* If decrypting correct for tag too */
|
|
if (!EVP_CIPHER_CTX_encrypting(c)) {
|
|
if (len < cctx->M)
|
|
return 0;
|
|
len -= cctx->M;
|
|
}
|
|
EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
|
|
EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
|
|
}
|
|
/* Extra padding: tag appended to record */
|
|
return cctx->M;
|
|
|
|
case EVP_CTRL_CCM_SET_IV_FIXED:
|
|
/* Sanity check length */
|
|
if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
|
|
return 0;
|
|
/* Just copy to first part of IV */
|
|
memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg);
|
|
return 1;
|
|
|
|
case EVP_CTRL_AEAD_SET_IVLEN:
|
|
arg = 15 - arg;
|
|
/* fall thru */
|
|
case EVP_CTRL_CCM_SET_L:
|
|
if (arg < 2 || arg > 8)
|
|
return 0;
|
|
cctx->L = arg;
|
|
return 1;
|
|
case EVP_CTRL_AEAD_SET_TAG:
|
|
if ((arg & 1) || arg < 4 || arg > 16)
|
|
return 0;
|
|
if (EVP_CIPHER_CTX_encrypting(c) && ptr)
|
|
return 0;
|
|
if (ptr) {
|
|
cctx->tag_set = 1;
|
|
memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
|
}
|
|
cctx->M = arg;
|
|
return 1;
|
|
|
|
case EVP_CTRL_AEAD_GET_TAG:
|
|
if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set)
|
|
return 0;
|
|
if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
|
|
return 0;
|
|
cctx->tag_set = 0;
|
|
cctx->iv_set = 0;
|
|
cctx->len_set = 0;
|
|
return 1;
|
|
|
|
case EVP_CTRL_COPY:
|
|
{
|
|
EVP_CIPHER_CTX *out = ptr;
|
|
EVP_ARIA_CCM_CTX *cctx_out = EVP_C_DATA(EVP_ARIA_CCM_CTX,out);
|
|
if (cctx->ccm.key) {
|
|
if (cctx->ccm.key != &cctx->ks)
|
|
return 0;
|
|
cctx_out->ccm.key = &cctx_out->ks;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int aria_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,ctx);
|
|
CCM128_CONTEXT *ccm = &cctx->ccm;
|
|
|
|
/* Encrypt/decrypt must be performed in place */
|
|
if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M))
|
|
return -1;
|
|
/* If encrypting set explicit IV from sequence number (start of AAD) */
|
|
if (EVP_CIPHER_CTX_encrypting(ctx))
|
|
memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx),
|
|
EVP_CCM_TLS_EXPLICIT_IV_LEN);
|
|
/* Get rest of IV from explicit IV */
|
|
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in,
|
|
EVP_CCM_TLS_EXPLICIT_IV_LEN);
|
|
/* Correct length value */
|
|
len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
|
|
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L,
|
|
len))
|
|
return -1;
|
|
/* Use saved AAD */
|
|
CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len);
|
|
/* Fix buffer to point to payload */
|
|
in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
|
out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
|
if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, cctx->str)
|
|
: CRYPTO_ccm128_encrypt(ccm, in, out, len))
|
|
return -1;
|
|
if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M))
|
|
return -1;
|
|
return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
|
|
} else {
|
|
if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len, cctx->str)
|
|
: !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
|
|
unsigned char tag[16];
|
|
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
|
|
if (!CRYPTO_memcmp(tag, in + len, cctx->M))
|
|
return len;
|
|
}
|
|
}
|
|
OPENSSL_cleanse(out, len);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static int aria_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_ARIA_CCM_CTX *cctx = EVP_C_DATA(EVP_ARIA_CCM_CTX,ctx);
|
|
CCM128_CONTEXT *ccm = &cctx->ccm;
|
|
|
|
/* If not set up, return error */
|
|
if (!cctx->key_set)
|
|
return -1;
|
|
|
|
if (cctx->tls_aad_len >= 0)
|
|
return aria_ccm_tls_cipher(ctx, out, in, len);
|
|
|
|
/* EVP_*Final() doesn't return any data */
|
|
if (in == NULL && out != NULL)
|
|
return 0;
|
|
|
|
if (!cctx->iv_set)
|
|
return -1;
|
|
|
|
if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
|
|
return -1;
|
|
if (!out) {
|
|
if (!in) {
|
|
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
|
|
15 - cctx->L, len))
|
|
return -1;
|
|
cctx->len_set = 1;
|
|
return len;
|
|
}
|
|
/* If have AAD need message length */
|
|
if (!cctx->len_set && len)
|
|
return -1;
|
|
CRYPTO_ccm128_aad(ccm, in, len);
|
|
return len;
|
|
}
|
|
/* If not set length yet do it */
|
|
if (!cctx->len_set) {
|
|
if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
|
|
15 - cctx->L, len))
|
|
return -1;
|
|
cctx->len_set = 1;
|
|
}
|
|
if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len, cctx->str)
|
|
: CRYPTO_ccm128_encrypt(ccm, in, out, len))
|
|
return -1;
|
|
cctx->tag_set = 1;
|
|
return len;
|
|
} else {
|
|
int rv = -1;
|
|
if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
|
|
cctx->str) :
|
|
!CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
|
|
unsigned char tag[16];
|
|
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
|
|
if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx),
|
|
cctx->M))
|
|
rv = len;
|
|
}
|
|
}
|
|
if (rv == -1)
|
|
OPENSSL_cleanse(out, len);
|
|
cctx->iv_set = 0;
|
|
cctx->tag_set = 0;
|
|
cctx->len_set = 0;
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
#define ARIA_AUTH_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
|
|
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
|
|
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
|
|
| EVP_CIPH_CUSTOM_COPY | EVP_CIPH_FLAG_AEAD_CIPHER)
|
|
|
|
#define BLOCK_CIPHER_aead(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
|
static const EVP_CIPHER aria_##keylen##_##mode = { \
|
|
nid##_##keylen##_##nmode, \
|
|
blocksize, keylen/8, ivlen, \
|
|
ARIA_AUTH_FLAGS|EVP_CIPH_##MODE##_MODE, \
|
|
aria_##mode##_init_key, \
|
|
aria_##mode##_cipher, \
|
|
NULL, \
|
|
sizeof(EVP_ARIA_##MODE##_CTX), \
|
|
NULL,NULL,aria_##mode##_ctrl,NULL }; \
|
|
const EVP_CIPHER *EVP_aria_##keylen##_##mode(void) \
|
|
{ return (EVP_CIPHER*)&aria_##keylen##_##mode; }
|
|
|
|
BLOCK_CIPHER_aead(NID_aria, 128, 1, 12, gcm, gcm, GCM, 0)
|
|
BLOCK_CIPHER_aead(NID_aria, 192, 1, 12, gcm, gcm, GCM, 0)
|
|
BLOCK_CIPHER_aead(NID_aria, 256, 1, 12, gcm, gcm, GCM, 0)
|
|
|
|
BLOCK_CIPHER_aead(NID_aria, 128, 1, 12, ccm, ccm, CCM, 0)
|
|
BLOCK_CIPHER_aead(NID_aria, 192, 1, 12, ccm, ccm, CCM, 0)
|
|
BLOCK_CIPHER_aead(NID_aria, 256, 1, 12, ccm, ccm, CCM, 0)
|
|
|
|
#endif
|