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Diffstat (limited to 'thirdparty/openssl/crypto/cmac/cmac.c')
-rw-r--r--thirdparty/openssl/crypto/cmac/cmac.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/thirdparty/openssl/crypto/cmac/cmac.c b/thirdparty/openssl/crypto/cmac/cmac.c
deleted file mode 100644
index 2954b6eb7d..0000000000
--- a/thirdparty/openssl/crypto/cmac/cmac.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/* crypto/cmac/cmac.c */
-/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project.
- */
-/* ====================================================================
- * Copyright (c) 2010 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "cryptlib.h"
-#include <openssl/cmac.h>
-
-#ifdef OPENSSL_FIPS
-# include <openssl/fips.h>
-#endif
-
-struct CMAC_CTX_st {
- /* Cipher context to use */
- EVP_CIPHER_CTX cctx;
- /* Keys k1 and k2 */
- unsigned char k1[EVP_MAX_BLOCK_LENGTH];
- unsigned char k2[EVP_MAX_BLOCK_LENGTH];
- /* Temporary block */
- unsigned char tbl[EVP_MAX_BLOCK_LENGTH];
- /* Last (possibly partial) block */
- unsigned char last_block[EVP_MAX_BLOCK_LENGTH];
- /* Number of bytes in last block: -1 means context not initialised */
- int nlast_block;
-};
-
-/* Make temporary keys K1 and K2 */
-
-static void make_kn(unsigned char *k1, unsigned char *l, int bl)
-{
- int i;
- /* Shift block to left, including carry */
- for (i = 0; i < bl; i++) {
- k1[i] = l[i] << 1;
- if (i < bl - 1 && l[i + 1] & 0x80)
- k1[i] |= 1;
- }
- /* If MSB set fixup with R */
- if (l[0] & 0x80)
- k1[bl - 1] ^= bl == 16 ? 0x87 : 0x1b;
-}
-
-CMAC_CTX *CMAC_CTX_new(void)
-{
- CMAC_CTX *ctx;
- ctx = OPENSSL_malloc(sizeof(CMAC_CTX));
- if (!ctx)
- return NULL;
- EVP_CIPHER_CTX_init(&ctx->cctx);
- ctx->nlast_block = -1;
- return ctx;
-}
-
-void CMAC_CTX_cleanup(CMAC_CTX *ctx)
-{
-#ifdef OPENSSL_FIPS
- if (FIPS_mode() && !ctx->cctx.engine) {
- FIPS_cmac_ctx_cleanup(ctx);
- return;
- }
-#endif
- EVP_CIPHER_CTX_cleanup(&ctx->cctx);
- OPENSSL_cleanse(ctx->tbl, EVP_MAX_BLOCK_LENGTH);
- OPENSSL_cleanse(ctx->k1, EVP_MAX_BLOCK_LENGTH);
- OPENSSL_cleanse(ctx->k2, EVP_MAX_BLOCK_LENGTH);
- OPENSSL_cleanse(ctx->last_block, EVP_MAX_BLOCK_LENGTH);
- ctx->nlast_block = -1;
-}
-
-EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx)
-{
- return &ctx->cctx;
-}
-
-void CMAC_CTX_free(CMAC_CTX *ctx)
-{
- if (!ctx)
- return;
- CMAC_CTX_cleanup(ctx);
- OPENSSL_free(ctx);
-}
-
-int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in)
-{
- int bl;
- if (in->nlast_block == -1)
- return 0;
- if (!EVP_CIPHER_CTX_copy(&out->cctx, &in->cctx))
- return 0;
- bl = EVP_CIPHER_CTX_block_size(&in->cctx);
- memcpy(out->k1, in->k1, bl);
- memcpy(out->k2, in->k2, bl);
- memcpy(out->tbl, in->tbl, bl);
- memcpy(out->last_block, in->last_block, bl);
- out->nlast_block = in->nlast_block;
- return 1;
-}
-
-int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
- const EVP_CIPHER *cipher, ENGINE *impl)
-{
- static unsigned char zero_iv[EVP_MAX_BLOCK_LENGTH];
-#ifdef OPENSSL_FIPS
- if (FIPS_mode()) {
- /* If we have an ENGINE need to allow non FIPS */
- if ((impl || ctx->cctx.engine)
- && !(ctx->cctx.flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)) {
- EVPerr(EVP_F_CMAC_INIT, EVP_R_DISABLED_FOR_FIPS);
- return 0;
- }
-
- /* Switch to FIPS cipher implementation if possible */
- if (cipher != NULL) {
- const EVP_CIPHER *fcipher;
- fcipher = FIPS_get_cipherbynid(EVP_CIPHER_nid(cipher));
- if (fcipher != NULL)
- cipher = fcipher;
- }
- /*
- * Other algorithm blocking will be done in FIPS_cmac_init, via
- * FIPS_cipherinit().
- */
- if (!impl && !ctx->cctx.engine)
- return FIPS_cmac_init(ctx, key, keylen, cipher, NULL);
- }
-#endif
- /* All zeros means restart */
- if (!key && !cipher && !impl && keylen == 0) {
- /* Not initialised */
- if (ctx->nlast_block == -1)
- return 0;
- if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
- return 0;
- memset(ctx->tbl, 0, EVP_CIPHER_CTX_block_size(&ctx->cctx));
- ctx->nlast_block = 0;
- return 1;
- }
- /* Initialiase context */
- if (cipher && !EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL))
- return 0;
- /* Non-NULL key means initialisation complete */
- if (key) {
- int bl;
- if (!EVP_CIPHER_CTX_cipher(&ctx->cctx))
- return 0;
- if (!EVP_CIPHER_CTX_set_key_length(&ctx->cctx, keylen))
- return 0;
- if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, key, zero_iv))
- return 0;
- bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, zero_iv, bl))
- return 0;
- make_kn(ctx->k1, ctx->tbl, bl);
- make_kn(ctx->k2, ctx->k1, bl);
- OPENSSL_cleanse(ctx->tbl, bl);
- /* Reset context again ready for first data block */
- if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
- return 0;
- /* Zero tbl so resume works */
- memset(ctx->tbl, 0, bl);
- ctx->nlast_block = 0;
- }
- return 1;
-}
-
-int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
-{
- const unsigned char *data = in;
- size_t bl;
-#ifdef OPENSSL_FIPS
- if (FIPS_mode() && !ctx->cctx.engine)
- return FIPS_cmac_update(ctx, in, dlen);
-#endif
- if (ctx->nlast_block == -1)
- return 0;
- if (dlen == 0)
- return 1;
- bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
- /* Copy into partial block if we need to */
- if (ctx->nlast_block > 0) {
- size_t nleft;
- nleft = bl - ctx->nlast_block;
- if (dlen < nleft)
- nleft = dlen;
- memcpy(ctx->last_block + ctx->nlast_block, data, nleft);
- dlen -= nleft;
- ctx->nlast_block += nleft;
- /* If no more to process return */
- if (dlen == 0)
- return 1;
- data += nleft;
- /* Else not final block so encrypt it */
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, ctx->last_block, bl))
- return 0;
- }
- /* Encrypt all but one of the complete blocks left */
- while (dlen > bl) {
- if (!EVP_Cipher(&ctx->cctx, ctx->tbl, data, bl))
- return 0;
- dlen -= bl;
- data += bl;
- }
- /* Copy any data left to last block buffer */
- memcpy(ctx->last_block, data, dlen);
- ctx->nlast_block = dlen;
- return 1;
-
-}
-
-int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen)
-{
- int i, bl, lb;
-#ifdef OPENSSL_FIPS
- if (FIPS_mode() && !ctx->cctx.engine)
- return FIPS_cmac_final(ctx, out, poutlen);
-#endif
- if (ctx->nlast_block == -1)
- return 0;
- bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
- *poutlen = (size_t)bl;
- if (!out)
- return 1;
- lb = ctx->nlast_block;
- /* Is last block complete? */
- if (lb == bl) {
- for (i = 0; i < bl; i++)
- out[i] = ctx->last_block[i] ^ ctx->k1[i];
- } else {
- ctx->last_block[lb] = 0x80;
- if (bl - lb > 1)
- memset(ctx->last_block + lb + 1, 0, bl - lb - 1);
- for (i = 0; i < bl; i++)
- out[i] = ctx->last_block[i] ^ ctx->k2[i];
- }
- if (!EVP_Cipher(&ctx->cctx, out, out, bl)) {
- OPENSSL_cleanse(out, bl);
- return 0;
- }
- return 1;
-}
-
-int CMAC_resume(CMAC_CTX *ctx)
-{
- if (ctx->nlast_block == -1)
- return 0;
- /*
- * The buffer "tbl" containes the last fully encrypted block which is the
- * last IV (or all zeroes if no last encrypted block). The last block has
- * not been modified since CMAC_final(). So reinitliasing using the last
- * decrypted block will allow CMAC to continue after calling
- * CMAC_Final().
- */
- return EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl);
-}
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