From 55b5efee44a1a983840a2ae8e17bca6699ea0eb5 Mon Sep 17 00:00:00 2001 From: tb <> Date: Fri, 29 Dec 2023 05:57:24 +0000 Subject: Use more consistent naming for some files in evp EVP_Digest{Init,Update,Final}() move from digest.c to evp_digest.c which will become the home of all things related to EVP_MD{,_CTX} handling. EVP_Cipher{Init,Update,Final}() move from evp_enc.c to evp_cipher.c which will become the home of all things related to EVP_CIPHER{,_CTX} handling. EVP_Encode{Init,Update,Final}() move from encode.c to evp_encode.c which already is the home of EVP_ENCODE_CTX_{new,free}(). discussed with jsing --- src/lib/libcrypto/evp/evp_digest.c | 369 +++++++++++++++++++++++++++++++++++++ 1 file changed, 369 insertions(+) create mode 100644 src/lib/libcrypto/evp/evp_digest.c (limited to 'src/lib/libcrypto/evp/evp_digest.c') diff --git a/src/lib/libcrypto/evp/evp_digest.c b/src/lib/libcrypto/evp/evp_digest.c new file mode 100644 index 0000000000..deb282e4ec --- /dev/null +++ b/src/lib/libcrypto/evp/evp_digest.c @@ -0,0 +1,369 @@ +/* $OpenBSD: evp_digest.c,v 1.1 2023/12/29 05:57:24 tb Exp $ */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * 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 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 acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS 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 AUTHOR OR 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. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ +/* ==================================================================== + * Copyright (c) 1998-2001 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 + * openssl-core@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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include +#include + +#include + +#include +#include +#include + +#include "evp_local.h" + +int +EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) +{ + EVP_MD_CTX_init(ctx); + return EVP_DigestInit_ex(ctx, type, NULL); +} + +int +EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) +{ + EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); + + if (ctx->digest != type) { + if (ctx->digest && ctx->digest->ctx_size && ctx->md_data && + !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) { + freezero(ctx->md_data, ctx->digest->ctx_size); + ctx->md_data = NULL; + } + ctx->digest = type; + if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) { + ctx->update = type->update; + ctx->md_data = calloc(1, type->ctx_size); + if (ctx->md_data == NULL) { + EVP_PKEY_CTX_free(ctx->pctx); + ctx->pctx = NULL; + EVPerror(ERR_R_MALLOC_FAILURE); + return 0; + } + } + } + if (ctx->pctx) { + int r; + r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG, + EVP_PKEY_CTRL_DIGESTINIT, 0, ctx); + if (r <= 0 && (r != -2)) + return 0; + } + if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) + return 1; + return ctx->digest->init(ctx); +} + +int +EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count) +{ + return ctx->update(ctx, data, count); +} + +/* The caller can assume that this removes any secret data from the context */ +int +EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) +{ + int ret; + + ret = EVP_DigestFinal_ex(ctx, md, size); + EVP_MD_CTX_cleanup(ctx); + return ret; +} + +/* The caller can assume that this removes any secret data from the context */ +int +EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) +{ + int ret; + + if ((size_t)ctx->digest->md_size > EVP_MAX_MD_SIZE) { + EVPerror(EVP_R_TOO_LARGE); + return 0; + } + ret = ctx->digest->final(ctx, md); + if (size != NULL) + *size = ctx->digest->md_size; + if (ctx->digest->cleanup) { + ctx->digest->cleanup(ctx); + EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); + } + memset(ctx->md_data, 0, ctx->digest->ctx_size); + return ret; +} + +int +EVP_Digest(const void *data, size_t count, + unsigned char *md, unsigned int *size, const EVP_MD *type, ENGINE *impl) +{ + EVP_MD_CTX ctx; + int ret; + + EVP_MD_CTX_init(&ctx); + EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_ONESHOT); + ret = EVP_DigestInit_ex(&ctx, type, NULL) && + EVP_DigestUpdate(&ctx, data, count) && + EVP_DigestFinal_ex(&ctx, md, size); + EVP_MD_CTX_cleanup(&ctx); + + return ret; +} + +int +EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) +{ + EVP_MD_CTX_init(out); + return EVP_MD_CTX_copy_ex(out, in); +} + +int +EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) +{ + unsigned char *tmp_buf; + + if ((in == NULL) || (in->digest == NULL)) { + EVPerror(EVP_R_INPUT_NOT_INITIALIZED); + return 0; + } + + if (out->digest == in->digest) { + tmp_buf = out->md_data; + EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE); + } else + tmp_buf = NULL; + EVP_MD_CTX_cleanup(out); + memcpy(out, in, sizeof *out); + out->md_data = NULL; + out->pctx = NULL; + + /* + * Because of the EVP_PKEY_CTX_dup() below, EVP_MD_CTX_cleanup() needs + * to free out->pctx in all cases (even if this flag is set on in). + */ + EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); + + if (in->md_data && out->digest->ctx_size) { + if (tmp_buf) { + out->md_data = tmp_buf; + } else { + out->md_data = calloc(1, out->digest->ctx_size); + if (out->md_data == NULL) { + EVPerror(ERR_R_MALLOC_FAILURE); + return 0; + } + } + memcpy(out->md_data, in->md_data, out->digest->ctx_size); + } + + out->update = in->update; + + if (in->pctx) { + out->pctx = EVP_PKEY_CTX_dup(in->pctx); + if (!out->pctx) { + EVP_MD_CTX_cleanup(out); + return 0; + } + } + + if (out->digest->copy) + return out->digest->copy(out, in); + + return 1; +} + +EVP_MD_CTX * +EVP_MD_CTX_new(void) +{ + return calloc(1, sizeof(EVP_MD_CTX)); +} + +void +EVP_MD_CTX_free(EVP_MD_CTX *ctx) +{ + if (ctx == NULL) + return; + + EVP_MD_CTX_cleanup(ctx); + + free(ctx); +} + +void +EVP_MD_CTX_init(EVP_MD_CTX *ctx) +{ + memset(ctx, 0, sizeof(*ctx)); +} + +int +EVP_MD_CTX_reset(EVP_MD_CTX *ctx) +{ + return EVP_MD_CTX_cleanup(ctx); +} + +EVP_MD_CTX * +EVP_MD_CTX_create(void) +{ + return EVP_MD_CTX_new(); +} + +void +EVP_MD_CTX_destroy(EVP_MD_CTX *ctx) +{ + EVP_MD_CTX_free(ctx); +} + +/* This call frees resources associated with the context */ +int +EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) +{ + /* + * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, + * because sometimes only copies of the context are ever finalised. + */ + if (ctx->digest && ctx->digest->cleanup && + !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED)) + ctx->digest->cleanup(ctx); + if (ctx->digest && ctx->digest->ctx_size && ctx->md_data && + !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) + freezero(ctx->md_data, ctx->digest->ctx_size); + /* + * If EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set, EVP_MD_CTX_set_pkey() was + * called and its strange API contract implies we don't own ctx->pctx. + */ + if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) + EVP_PKEY_CTX_free(ctx->pctx); + memset(ctx, 0, sizeof(*ctx)); + + return 1; +} + +int +EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr) +{ + int ret; + + if (!ctx->digest) { + EVPerror(EVP_R_NO_CIPHER_SET); + return 0; + } + + if (!ctx->digest->md_ctrl) { + EVPerror(EVP_R_CTRL_NOT_IMPLEMENTED); + return 0; + } + + ret = ctx->digest->md_ctrl(ctx, type, arg, ptr); + if (ret == -1) { + EVPerror(EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED); + return 0; + } + return ret; +} -- cgit v1.2.3-55-g6feb