/*
- * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (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
#ifndef OPENSSL_NO_ARIA
# include <openssl/evp.h>
# include <openssl/modes.h>
-# include"internal/aria.h"
+# include <openssl/rand.h>
+# include <openssl/rand_drbg.h>
+# include "internal/aria.h"
# include "internal/evp_int.h"
+# include "modes_lcl.h"
+# include "evp_locl.h"
/* ARIA subkey Structure */
typedef struct {
ARIA_KEY ks;
} EVP_ARIA_KEY;
+/* ARIA GCM context */
+typedef struct {
+ union {
+ double align;
+ ARIA_KEY ks;
+ } ks; /* ARIA subkey to use */
+ int key_set; /* Set if key initialised */
+ int iv_set; /* Set if an iv is set */
+ GCM128_CONTEXT gcm;
+ unsigned char *iv; /* Temporary IV store */
+ int ivlen; /* IV length */
+ int taglen;
+ int iv_gen; /* It is OK to generate IVs */
+ int tls_aad_len; /* TLS AAD length */
+} EVP_ARIA_GCM_CTX;
+
+/* ARIA CCM context */
+typedef struct {
+ union {
+ double align;
+ ARIA_KEY ks;
+ } ks; /* ARIA key schedule to use */
+ int key_set; /* Set if key initialised */
+ int iv_set; /* Set if an iv is set */
+ int tag_set; /* Set if tag is valid */
+ int len_set; /* Set if message length set */
+ int L, M; /* L and M parameters from RFC3610 */
+ int tls_aad_len; /* TLS AAD length */
+ CCM128_CONTEXT ccm;
+ ccm128_f str;
+} EVP_ARIA_CCM_CTX;
+
/* 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)
BLOCK_CIPHER_generic(NID_aria, 192, 1, 16, ctr, ctr, CTR, 0)
BLOCK_CIPHER_generic(NID_aria, 256, 1, 16, ctr, ctr, CTR, 0)
+/* Authenticated cipher modes (GCM/CCM) */
+
+/* increment counter (64-bit int) by 1 */
+static void ctr64_inc(unsigned char *counter)
+{
+ int n = 8;
+ unsigned char c;
+
+ do {
+ --n;
+ c = counter[n];
+ ++c;
+ counter[n] = c;
+ if (c)
+ return;
+ } while (n);
+}
+
+static int aria_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ int ret;
+ EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,ctx);
+
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ ret = aria_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &gctx->ks.ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
+ (block128_f) aria_encrypt);
+ if (ret < 0) {
+ EVPerr(EVP_F_ARIA_GCM_INIT_KEY,EVP_R_ARIA_KEY_SETUP_FAILED);
+ return 0;
+ }
+
+ /*
+ * If we have an iv can set it directly, otherwise use saved IV.
+ */
+ if (iv == NULL && gctx->iv_set)
+ iv = gctx->iv;
+ if (iv) {
+ CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
+ gctx->iv_set = 1;
+ }
+ gctx->key_set = 1;
+ } else {
+ /* If key set use IV, otherwise copy */
+ if (gctx->key_set)
+ CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
+ else
+ memcpy(gctx->iv, iv, gctx->ivlen);
+ gctx->iv_set = 1;
+ gctx->iv_gen = 0;
+ }
+ return 1;
+}
+
+static int aria_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX,c);
+
+ switch (type) {
+ case EVP_CTRL_INIT:
+ gctx->key_set = 0;
+ gctx->iv_set = 0;
+ gctx->ivlen = EVP_CIPHER_CTX_iv_length(c);
+ gctx->iv = EVP_CIPHER_CTX_iv_noconst(c);
+ gctx->taglen = -1;
+ gctx->iv_gen = 0;
+ gctx->tls_aad_len = -1;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg <= 0)
+ return 0;
+ /* Allocate memory for IV if needed */
+ if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
+ if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
+ OPENSSL_free(gctx->iv);
+ if ((gctx->iv = OPENSSL_malloc(arg)) == NULL) {
+ EVPerr(EVP_F_ARIA_GCM_CTRL, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ }
+ gctx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+ memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
+ gctx->taglen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c)
+ || gctx->taglen < 0)
+ return 0;
+ memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg);
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_FIXED:
+ /* Special case: -1 length restores whole IV */
+ if (arg == -1) {
+ memcpy(gctx->iv, ptr, gctx->ivlen);
+ gctx->iv_gen = 1;
+ return 1;
+ }
+ /*
+ * Fixed field must be at least 4 bytes and invocation field at least
+ * 8.
+ */
+ if ((arg < 4) || (gctx->ivlen - arg) < 8)
+ return 0;
+ if (arg)
+ memcpy(gctx->iv, ptr, arg);
+ if (EVP_CIPHER_CTX_encrypting(c)
+ && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
+ return 0;
+ gctx->iv_gen = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_IV_GEN:
+ if (gctx->iv_gen == 0 || gctx->key_set == 0)
+ return 0;
+ CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
+ if (arg <= 0 || arg > gctx->ivlen)
+ arg = gctx->ivlen;
+ memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
+ /*
+ * Invocation field will be at least 8 bytes in size and so no need
+ * to check wrap around or increment more than last 8 bytes.
+ */
+ ctr64_inc(gctx->iv + gctx->ivlen - 8);
+ gctx->iv_set = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_INV:
+ if (gctx->iv_gen == 0 || gctx->key_set == 0
+ || EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+ memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+ CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
+ gctx->iv_set = 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);
+ gctx->tls_aad_len = arg;
+ {
+ unsigned int 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_GCM_TLS_EXPLICIT_IV_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ /* If decrypting correct for tag too */
+ if (!EVP_CIPHER_CTX_encrypting(c)) {
+ if (len < EVP_GCM_TLS_TAG_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_TAG_LEN;
+ }
+ 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 EVP_GCM_TLS_TAG_LEN;
+
+ case EVP_CTRL_COPY:
+ {
+ EVP_CIPHER_CTX *out = ptr;
+ EVP_ARIA_GCM_CTX *gctx_out = EVP_C_DATA(EVP_ARIA_GCM_CTX,out);
+ if (gctx->gcm.key) {
+ if (gctx->gcm.key != &gctx->ks)
+ return 0;
+ gctx_out->gcm.key = &gctx_out->ks;
+ }
+ if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c))
+ gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
+ else {
+ if ((gctx_out->iv = OPENSSL_malloc(gctx->ivlen)) == NULL) {
+ EVPerr(EVP_F_ARIA_GCM_CTRL, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
+ }
+ return 1;
+ }
+
+ default:
+ return -1;
+
+ }
+}
+
+static int aria_gcm_tls_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);
+ int rv = -1;
+
+ /* Encrypt/decrypt must be performed in place */
+ if (out != in
+ || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
+ return -1;
+ /*
+ * Set IV from start of buffer or generate IV and write to start of
+ * buffer.
+ */
+ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ?
+ EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
+ EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
+ goto err;
+ /* Use saved AAD */
+ if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
+ gctx->tls_aad_len))
+ goto err;
+ /* Fix buffer and length to point to payload */
+ in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ /* Encrypt payload */
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
+ goto err;
+ out += len;
+ /* Finally write tag */
+ CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
+ rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+ } else {
+ /* Decrypt */
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
+ goto err;
+ /* Retrieve tag */
+ CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
+ EVP_GCM_TLS_TAG_LEN);
+ /* If tag mismatch wipe buffer */
+ 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_gcm_cleanup(EVP_CIPHER_CTX *ctx)
+{
+ EVP_ARIA_GCM_CTX *gctx = EVP_C_DATA(EVP_ARIA_GCM_CTX, ctx);
+
+ if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(ctx))
+ OPENSSL_free(gctx->iv);
+
+ return 1;
+}
+
+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_ccm_cleanup NULL
+
+#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, \
+ aria_##mode##_cleanup, \
+ 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
projects / openssl.git / blobdiff