From 86c49b31af735796dfde37aa29473a30d36367db Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Sat, 23 Jul 2016 19:31:36 +0000 Subject: This commit was manufactured by cvs2git to create tag 'OPENBSD_6_0_BASE'. --- src/lib/libcrypto/cmac/cmac.c | 281 ------------------------------------------ 1 file changed, 281 deletions(-) delete mode 100644 src/lib/libcrypto/cmac/cmac.c (limited to 'src/lib/libcrypto/cmac/cmac.c') diff --git a/src/lib/libcrypto/cmac/cmac.c b/src/lib/libcrypto/cmac/cmac.c deleted file mode 100644 index d01ae0f3ae..0000000000 --- a/src/lib/libcrypto/cmac/cmac.c +++ /dev/null @@ -1,281 +0,0 @@ -/* $OpenBSD: cmac.c,v 1.10 2015/09/10 15:56:25 jsing Exp $ */ -/* 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 -#include -#include - -#include - -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 = 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) -{ - EVP_CIPHER_CTX_cleanup(&ctx->cctx); - explicit_bzero(ctx->tbl, EVP_MAX_BLOCK_LENGTH); - explicit_bzero(ctx->k1, EVP_MAX_BLOCK_LENGTH); - explicit_bzero(ctx->k2, EVP_MAX_BLOCK_LENGTH); - explicit_bzero(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 == NULL) - return; - - CMAC_CTX_cleanup(ctx); - 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]; - - /* 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); - explicit_bzero(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; - - 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; - - 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)) { - explicit_bzero(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 reinitialising 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); -} -- cgit v1.2.3-55-g6feb