927 lines
29 KiB
C
927 lines
29 KiB
C
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/*
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* Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (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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/*
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* This is the OSSLTEST engine. It provides deliberately crippled digest
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* implementations for test purposes. It is highly insecure and must NOT be
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* used for any purpose except testing
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*/
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/* We need to use some engine deprecated APIs */
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#define OPENSSL_SUPPRESS_DEPRECATED
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/*
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* SHA low level APIs are deprecated for public use, but still ok for
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* internal use. Note, that due to symbols not being exported, only the
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* #defines and type definitions can be accessed, function calls are not
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* available. The digest lengths, block sizes and sizeof(CTX) are used herein
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* for several different digests.
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*/
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include <string.h>
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#include "internal/common.h" /* for CHECK_AND_SKIP_CASE_PREFIX */
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#include <openssl/engine.h>
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#include <openssl/sha.h>
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#include <openssl/md5.h>
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <openssl/modes.h>
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#include <openssl/aes.h>
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#include <openssl/rand.h>
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#include <openssl/crypto.h>
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#include <openssl/pem.h>
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#include <crypto/evp.h>
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#include "e_ossltest_err.c"
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/* Engine Id and Name */
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static const char *engine_ossltest_id = "ossltest";
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static const char *engine_ossltest_name = "OpenSSL Test engine support";
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/* Engine Lifetime functions */
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static int ossltest_destroy(ENGINE *e);
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static int ossltest_init(ENGINE *e);
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static int ossltest_finish(ENGINE *e);
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void ENGINE_load_ossltest(void);
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/* Set up digests */
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static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
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const int **nids, int nid);
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static const RAND_METHOD *ossltest_rand_method(void);
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/* MD5 */
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static int digest_md5_init(EVP_MD_CTX *ctx);
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static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_md5_md = NULL;
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static const EVP_MD *digest_md5(void)
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{
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if (_hidden_md5_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_md5, NID_md5WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(MD5_CTX))
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|| !EVP_MD_meth_set_flags(md, 0)
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|| !EVP_MD_meth_set_init(md, digest_md5_init)
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|| !EVP_MD_meth_set_update(md, digest_md5_update)
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|| !EVP_MD_meth_set_final(md, digest_md5_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_md5_md = md;
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}
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return _hidden_md5_md;
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}
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/* SHA1 */
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static int digest_sha1_init(EVP_MD_CTX *ctx);
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static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha1_md = NULL;
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static const EVP_MD *digest_sha1(void)
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{
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if (_hidden_sha1_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha1_init)
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|| !EVP_MD_meth_set_update(md, digest_sha1_update)
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|| !EVP_MD_meth_set_final(md, digest_sha1_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha1_md = md;
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}
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return _hidden_sha1_md;
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}
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/* SHA256 */
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static int digest_sha256_init(EVP_MD_CTX *ctx);
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static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha256_md = NULL;
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static const EVP_MD *digest_sha256(void)
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{
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if (_hidden_sha256_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha256, NID_sha256WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA256_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA256_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA256_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha256_init)
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|| !EVP_MD_meth_set_update(md, digest_sha256_update)
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|| !EVP_MD_meth_set_final(md, digest_sha256_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha256_md = md;
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}
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return _hidden_sha256_md;
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}
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/* SHA384/SHA512 */
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static int digest_sha384_init(EVP_MD_CTX *ctx);
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static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md);
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static int digest_sha512_init(EVP_MD_CTX *ctx);
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static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
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size_t count);
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static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md);
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static EVP_MD *_hidden_sha384_md = NULL;
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static const EVP_MD *digest_sha384(void)
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{
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if (_hidden_sha384_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha384, NID_sha384WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA384_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA512_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha384_init)
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|| !EVP_MD_meth_set_update(md, digest_sha384_update)
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|| !EVP_MD_meth_set_final(md, digest_sha384_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha384_md = md;
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}
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return _hidden_sha384_md;
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}
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static EVP_MD *_hidden_sha512_md = NULL;
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static const EVP_MD *digest_sha512(void)
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{
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if (_hidden_sha512_md == NULL) {
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EVP_MD *md;
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if ((md = EVP_MD_meth_new(NID_sha512, NID_sha512WithRSAEncryption)) == NULL
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|| !EVP_MD_meth_set_result_size(md, SHA512_DIGEST_LENGTH)
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|| !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK)
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|| !EVP_MD_meth_set_app_datasize(md,
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sizeof(EVP_MD *) + sizeof(SHA512_CTX))
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|| !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT)
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|| !EVP_MD_meth_set_init(md, digest_sha512_init)
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|| !EVP_MD_meth_set_update(md, digest_sha512_update)
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|| !EVP_MD_meth_set_final(md, digest_sha512_final)) {
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EVP_MD_meth_free(md);
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md = NULL;
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}
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_hidden_sha512_md = md;
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}
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return _hidden_sha512_md;
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}
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static void destroy_digests(void)
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{
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EVP_MD_meth_free(_hidden_md5_md);
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_hidden_md5_md = NULL;
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EVP_MD_meth_free(_hidden_sha1_md);
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_hidden_sha1_md = NULL;
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EVP_MD_meth_free(_hidden_sha256_md);
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_hidden_sha256_md = NULL;
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EVP_MD_meth_free(_hidden_sha384_md);
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_hidden_sha384_md = NULL;
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EVP_MD_meth_free(_hidden_sha512_md);
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_hidden_sha512_md = NULL;
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}
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static int ossltest_digest_nids(const int **nids)
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{
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static int digest_nids[6] = { 0, 0, 0, 0, 0, 0 };
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static int pos = 0;
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static int init = 0;
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if (!init) {
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const EVP_MD *md;
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if ((md = digest_md5()) != NULL)
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digest_nids[pos++] = EVP_MD_get_type(md);
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if ((md = digest_sha1()) != NULL)
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digest_nids[pos++] = EVP_MD_get_type(md);
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if ((md = digest_sha256()) != NULL)
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digest_nids[pos++] = EVP_MD_get_type(md);
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if ((md = digest_sha384()) != NULL)
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digest_nids[pos++] = EVP_MD_get_type(md);
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if ((md = digest_sha512()) != NULL)
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digest_nids[pos++] = EVP_MD_get_type(md);
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digest_nids[pos] = 0;
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init = 1;
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}
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*nids = digest_nids;
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return pos;
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}
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/* Setup ciphers */
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static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **,
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const int **, int);
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static int ossltest_cipher_nids[] = {
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NID_aes_128_cbc, NID_aes_128_gcm,
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NID_aes_128_cbc_hmac_sha1, 0
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};
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/* AES128 */
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static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *key,
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const unsigned char *iv, int enc);
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static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *key,
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const unsigned char *iv, int enc);
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static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
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void *ptr);
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static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *key,
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const unsigned char *iv,
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int enc);
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static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
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unsigned char *out,
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const unsigned char *in,
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size_t inl);
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static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
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int arg, void *ptr);
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typedef struct {
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size_t payload_length; /* AAD length in decrypt case */
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unsigned int tls_ver;
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} EVP_AES_HMAC_SHA1;
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static EVP_CIPHER *_hidden_aes_128_cbc = NULL;
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static const EVP_CIPHER *ossltest_aes_128_cbc(void)
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{
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if (_hidden_aes_128_cbc == NULL
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&& ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc,
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16 /* block size */,
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16 /* key len */)) == NULL
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|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16)
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|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc,
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EVP_CIPH_FLAG_DEFAULT_ASN1
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| EVP_CIPH_CBC_MODE)
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|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc,
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ossltest_aes128_init_key)
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|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc,
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ossltest_aes128_cbc_cipher)
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|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc,
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EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) {
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EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
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_hidden_aes_128_cbc = NULL;
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}
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return _hidden_aes_128_cbc;
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}
|
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|
||
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static EVP_CIPHER *_hidden_aes_128_gcm = NULL;
|
||
|
|
||
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#define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
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| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
|
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| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
|
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| EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \
|
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| EVP_CIPH_GCM_MODE)
|
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|
|
||
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static const EVP_CIPHER *ossltest_aes_128_gcm(void)
|
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{
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if (_hidden_aes_128_gcm == NULL
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&& ((_hidden_aes_128_gcm = EVP_CIPHER_meth_new(NID_aes_128_gcm,
|
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1 /* block size */,
|
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16 /* key len */)) == NULL
|
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|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_gcm,12)
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|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_gcm, AES_GCM_FLAGS)
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|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_gcm,
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ossltest_aes128_gcm_init_key)
|
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|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_gcm,
|
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ossltest_aes128_gcm_cipher)
|
||
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|| !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm,
|
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ossltest_aes128_gcm_ctrl)
|
||
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|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm,
|
||
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EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) {
|
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EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
|
||
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_hidden_aes_128_gcm = NULL;
|
||
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}
|
||
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return _hidden_aes_128_gcm;
|
||
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}
|
||
|
|
||
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static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL;
|
||
|
|
||
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static const EVP_CIPHER *ossltest_aes_128_cbc_hmac_sha1(void)
|
||
|
{
|
||
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if (_hidden_aes_128_cbc_hmac_sha1 == NULL
|
||
|
&& ((_hidden_aes_128_cbc_hmac_sha1
|
||
|
= EVP_CIPHER_meth_new(NID_aes_128_cbc_hmac_sha1,
|
||
|
16 /* block size */,
|
||
|
16 /* key len */)) == NULL
|
||
|
|| !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16)
|
||
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|| !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
|
||
|
EVP_CIPH_FLAG_AEAD_CIPHER)
|
||
|
|| !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
ossltest_aes128_cbc_hmac_sha1_init_key)
|
||
|
|| !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
ossltest_aes128_cbc_hmac_sha1_cipher)
|
||
|
|| !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
ossltest_aes128_cbc_hmac_sha1_ctrl)
|
||
|
|| !EVP_CIPHER_meth_set_set_asn1_params(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv)
|
||
|
|| !EVP_CIPHER_meth_set_get_asn1_params(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv)
|
||
|
|| !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1,
|
||
|
sizeof(EVP_AES_HMAC_SHA1)))) {
|
||
|
EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
|
||
|
_hidden_aes_128_cbc_hmac_sha1 = NULL;
|
||
|
}
|
||
|
return _hidden_aes_128_cbc_hmac_sha1;
|
||
|
}
|
||
|
|
||
|
static void destroy_ciphers(void)
|
||
|
{
|
||
|
EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
|
||
|
EVP_CIPHER_meth_free(_hidden_aes_128_gcm);
|
||
|
EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
|
||
|
_hidden_aes_128_cbc = NULL;
|
||
|
_hidden_aes_128_gcm = NULL;
|
||
|
_hidden_aes_128_cbc_hmac_sha1 = NULL;
|
||
|
}
|
||
|
|
||
|
/* Key loading */
|
||
|
static EVP_PKEY *load_key(ENGINE *eng, const char *key_id, int pub,
|
||
|
UI_METHOD *ui_method, void *ui_data)
|
||
|
{
|
||
|
BIO *in;
|
||
|
EVP_PKEY *key;
|
||
|
|
||
|
if (!CHECK_AND_SKIP_CASE_PREFIX(key_id, "ot:"))
|
||
|
return NULL;
|
||
|
|
||
|
fprintf(stderr, "[ossltest]Loading %s key %s\n",
|
||
|
pub ? "Public" : "Private", key_id);
|
||
|
in = BIO_new_file(key_id, "r");
|
||
|
if (!in)
|
||
|
return NULL;
|
||
|
if (pub)
|
||
|
key = PEM_read_bio_PUBKEY(in, NULL, 0, NULL);
|
||
|
else
|
||
|
key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
|
||
|
BIO_free(in);
|
||
|
return key;
|
||
|
}
|
||
|
|
||
|
static EVP_PKEY *ossltest_load_privkey(ENGINE *eng, const char *key_id,
|
||
|
UI_METHOD *ui_method, void *ui_data)
|
||
|
{
|
||
|
return load_key(eng, key_id, 0, ui_method, ui_data);
|
||
|
}
|
||
|
|
||
|
static EVP_PKEY *ossltest_load_pubkey(ENGINE *eng, const char *key_id,
|
||
|
UI_METHOD *ui_method, void *ui_data)
|
||
|
{
|
||
|
return load_key(eng, key_id, 1, ui_method, ui_data);
|
||
|
}
|
||
|
|
||
|
|
||
|
static int bind_ossltest(ENGINE *e)
|
||
|
{
|
||
|
/* Ensure the ossltest error handling is set up */
|
||
|
ERR_load_OSSLTEST_strings();
|
||
|
|
||
|
if (!ENGINE_set_id(e, engine_ossltest_id)
|
||
|
|| !ENGINE_set_name(e, engine_ossltest_name)
|
||
|
|| !ENGINE_set_digests(e, ossltest_digests)
|
||
|
|| !ENGINE_set_ciphers(e, ossltest_ciphers)
|
||
|
|| !ENGINE_set_RAND(e, ossltest_rand_method())
|
||
|
|| !ENGINE_set_destroy_function(e, ossltest_destroy)
|
||
|
|| !ENGINE_set_load_privkey_function(e, ossltest_load_privkey)
|
||
|
|| !ENGINE_set_load_pubkey_function(e, ossltest_load_pubkey)
|
||
|
|| !ENGINE_set_init_function(e, ossltest_init)
|
||
|
|| !ENGINE_set_finish_function(e, ossltest_finish)) {
|
||
|
OSSLTESTerr(OSSLTEST_F_BIND_OSSLTEST, OSSLTEST_R_INIT_FAILED);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
#ifndef OPENSSL_NO_DYNAMIC_ENGINE
|
||
|
static int bind_helper(ENGINE *e, const char *id)
|
||
|
{
|
||
|
if (id && (strcmp(id, engine_ossltest_id) != 0))
|
||
|
return 0;
|
||
|
if (!bind_ossltest(e))
|
||
|
return 0;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
IMPLEMENT_DYNAMIC_CHECK_FN()
|
||
|
IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
|
||
|
#endif
|
||
|
|
||
|
static ENGINE *engine_ossltest(void)
|
||
|
{
|
||
|
ENGINE *ret = ENGINE_new();
|
||
|
if (ret == NULL)
|
||
|
return NULL;
|
||
|
if (!bind_ossltest(ret)) {
|
||
|
ENGINE_free(ret);
|
||
|
return NULL;
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
void ENGINE_load_ossltest(void)
|
||
|
{
|
||
|
/* Copied from eng_[openssl|dyn].c */
|
||
|
ENGINE *toadd = engine_ossltest();
|
||
|
if (!toadd)
|
||
|
return;
|
||
|
ENGINE_add(toadd);
|
||
|
ENGINE_free(toadd);
|
||
|
ERR_clear_error();
|
||
|
}
|
||
|
|
||
|
|
||
|
static int ossltest_init(ENGINE *e)
|
||
|
{
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
|
||
|
static int ossltest_finish(ENGINE *e)
|
||
|
{
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
|
||
|
static int ossltest_destroy(ENGINE *e)
|
||
|
{
|
||
|
destroy_digests();
|
||
|
destroy_ciphers();
|
||
|
ERR_unload_OSSLTEST_strings();
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int ossltest_digests(ENGINE *e, const EVP_MD **digest,
|
||
|
const int **nids, int nid)
|
||
|
{
|
||
|
int ok = 1;
|
||
|
if (!digest) {
|
||
|
/* We are returning a list of supported nids */
|
||
|
return ossltest_digest_nids(nids);
|
||
|
}
|
||
|
/* We are being asked for a specific digest */
|
||
|
switch (nid) {
|
||
|
case NID_md5:
|
||
|
*digest = digest_md5();
|
||
|
break;
|
||
|
case NID_sha1:
|
||
|
*digest = digest_sha1();
|
||
|
break;
|
||
|
case NID_sha256:
|
||
|
*digest = digest_sha256();
|
||
|
break;
|
||
|
case NID_sha384:
|
||
|
*digest = digest_sha384();
|
||
|
break;
|
||
|
case NID_sha512:
|
||
|
*digest = digest_sha512();
|
||
|
break;
|
||
|
default:
|
||
|
ok = 0;
|
||
|
*digest = NULL;
|
||
|
break;
|
||
|
}
|
||
|
return ok;
|
||
|
}
|
||
|
|
||
|
static int ossltest_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
||
|
const int **nids, int nid)
|
||
|
{
|
||
|
int ok = 1;
|
||
|
if (!cipher) {
|
||
|
/* We are returning a list of supported nids */
|
||
|
*nids = ossltest_cipher_nids;
|
||
|
return (sizeof(ossltest_cipher_nids) - 1)
|
||
|
/ sizeof(ossltest_cipher_nids[0]);
|
||
|
}
|
||
|
/* We are being asked for a specific cipher */
|
||
|
switch (nid) {
|
||
|
case NID_aes_128_cbc:
|
||
|
*cipher = ossltest_aes_128_cbc();
|
||
|
break;
|
||
|
case NID_aes_128_gcm:
|
||
|
*cipher = ossltest_aes_128_gcm();
|
||
|
break;
|
||
|
case NID_aes_128_cbc_hmac_sha1:
|
||
|
*cipher = ossltest_aes_128_cbc_hmac_sha1();
|
||
|
break;
|
||
|
default:
|
||
|
ok = 0;
|
||
|
*cipher = NULL;
|
||
|
break;
|
||
|
}
|
||
|
return ok;
|
||
|
}
|
||
|
|
||
|
static void fill_known_data(unsigned char *md, unsigned int len)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i=0; i<len; i++) {
|
||
|
md[i] = (unsigned char)(i & 0xff);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* MD5 implementation. We go through the motions of doing MD5 by deferring to
|
||
|
* the standard implementation. Then we overwrite the result with a will defined
|
||
|
* value, so that all "MD5" digests using the test engine always end up with
|
||
|
* the same value.
|
||
|
*/
|
||
|
static int digest_md5_init(EVP_MD_CTX *ctx)
|
||
|
{
|
||
|
return EVP_MD_meth_get_init(EVP_md5())(ctx);
|
||
|
}
|
||
|
|
||
|
static int digest_md5_update(EVP_MD_CTX *ctx, const void *data,
|
||
|
size_t count)
|
||
|
{
|
||
|
return EVP_MD_meth_get_update(EVP_md5())(ctx, data, count);
|
||
|
}
|
||
|
|
||
|
static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md)
|
||
|
{
|
||
|
int ret = EVP_MD_meth_get_final(EVP_md5())(ctx, md);
|
||
|
|
||
|
if (ret > 0) {
|
||
|
fill_known_data(md, MD5_DIGEST_LENGTH);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* SHA1 implementation.
|
||
|
*/
|
||
|
static int digest_sha1_init(EVP_MD_CTX *ctx)
|
||
|
{
|
||
|
return EVP_MD_meth_get_init(EVP_sha1())(ctx);
|
||
|
}
|
||
|
|
||
|
static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data,
|
||
|
size_t count)
|
||
|
{
|
||
|
return EVP_MD_meth_get_update(EVP_sha1())(ctx, data, count);
|
||
|
}
|
||
|
|
||
|
static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
|
||
|
{
|
||
|
int ret = EVP_MD_meth_get_final(EVP_sha1())(ctx, md);
|
||
|
|
||
|
if (ret > 0) {
|
||
|
fill_known_data(md, SHA_DIGEST_LENGTH);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* SHA256 implementation.
|
||
|
*/
|
||
|
static int digest_sha256_init(EVP_MD_CTX *ctx)
|
||
|
{
|
||
|
return EVP_MD_meth_get_init(EVP_sha256())(ctx);
|
||
|
}
|
||
|
|
||
|
static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data,
|
||
|
size_t count)
|
||
|
{
|
||
|
return EVP_MD_meth_get_update(EVP_sha256())(ctx, data, count);
|
||
|
}
|
||
|
|
||
|
static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md)
|
||
|
{
|
||
|
int ret = EVP_MD_meth_get_final(EVP_sha256())(ctx, md);
|
||
|
|
||
|
if (ret > 0) {
|
||
|
fill_known_data(md, SHA256_DIGEST_LENGTH);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* SHA384 implementation.
|
||
|
*/
|
||
|
static int digest_sha384_init(EVP_MD_CTX *ctx)
|
||
|
{
|
||
|
return EVP_MD_meth_get_init(EVP_sha384())(ctx);
|
||
|
}
|
||
|
|
||
|
static int digest_sha384_update(EVP_MD_CTX *ctx, const void *data,
|
||
|
size_t count)
|
||
|
{
|
||
|
return EVP_MD_meth_get_update(EVP_sha384())(ctx, data, count);
|
||
|
}
|
||
|
|
||
|
static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md)
|
||
|
{
|
||
|
int ret = EVP_MD_meth_get_final(EVP_sha384())(ctx, md);
|
||
|
|
||
|
if (ret > 0) {
|
||
|
fill_known_data(md, SHA384_DIGEST_LENGTH);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* SHA512 implementation.
|
||
|
*/
|
||
|
static int digest_sha512_init(EVP_MD_CTX *ctx)
|
||
|
{
|
||
|
return EVP_MD_meth_get_init(EVP_sha512())(ctx);
|
||
|
}
|
||
|
|
||
|
static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data,
|
||
|
size_t count)
|
||
|
{
|
||
|
return EVP_MD_meth_get_update(EVP_sha512())(ctx, data, count);
|
||
|
}
|
||
|
|
||
|
static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md)
|
||
|
{
|
||
|
int ret = EVP_MD_meth_get_final(EVP_sha512())(ctx, md);
|
||
|
|
||
|
if (ret > 0) {
|
||
|
fill_known_data(md, SHA512_DIGEST_LENGTH);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* AES128 Implementation
|
||
|
*/
|
||
|
|
||
|
static int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx,
|
||
|
const unsigned char *key,
|
||
|
const unsigned char *iv, int enc)
|
||
|
{
|
||
|
return EVP_CIPHER_meth_get_init(EVP_aes_128_cbc()) (ctx, key, iv, enc);
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
||
|
const unsigned char *in, size_t inl)
|
||
|
{
|
||
|
unsigned char *tmpbuf;
|
||
|
int ret;
|
||
|
|
||
|
tmpbuf = OPENSSL_malloc(inl);
|
||
|
|
||
|
/* OPENSSL_malloc will return NULL if inl == 0 */
|
||
|
if (tmpbuf == NULL && inl > 0)
|
||
|
return -1;
|
||
|
|
||
|
/* Remember what we were asked to encrypt */
|
||
|
if (tmpbuf != NULL)
|
||
|
memcpy(tmpbuf, in, inl);
|
||
|
|
||
|
/* Go through the motions of encrypting it */
|
||
|
ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc())(ctx, out, in, inl);
|
||
|
|
||
|
/* Throw it all away and just use the plaintext as the output */
|
||
|
if (tmpbuf != NULL)
|
||
|
memcpy(out, tmpbuf, inl);
|
||
|
OPENSSL_free(tmpbuf);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx,
|
||
|
const unsigned char *key,
|
||
|
const unsigned char *iv, int enc)
|
||
|
{
|
||
|
return EVP_CIPHER_meth_get_init(EVP_aes_128_gcm()) (ctx, key, iv, enc);
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
||
|
const unsigned char *in, size_t inl)
|
||
|
{
|
||
|
unsigned char *tmpbuf = OPENSSL_malloc(inl);
|
||
|
|
||
|
/* OPENSSL_malloc will return NULL if inl == 0 */
|
||
|
if (tmpbuf == NULL && inl > 0)
|
||
|
return -1;
|
||
|
|
||
|
/* Remember what we were asked to encrypt */
|
||
|
if (tmpbuf != NULL)
|
||
|
memcpy(tmpbuf, in, inl);
|
||
|
|
||
|
/* Go through the motions of encrypting it */
|
||
|
EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_gcm())(ctx, out, in, inl);
|
||
|
|
||
|
/* Throw it all away and just use the plaintext as the output */
|
||
|
if (tmpbuf != NULL && out != NULL)
|
||
|
memcpy(out, tmpbuf, inl);
|
||
|
OPENSSL_free(tmpbuf);
|
||
|
|
||
|
return inl;
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
|
||
|
void *ptr)
|
||
|
{
|
||
|
/* Pass the ctrl down */
|
||
|
int ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_gcm())(ctx, type, arg, ptr);
|
||
|
|
||
|
if (ret <= 0)
|
||
|
return ret;
|
||
|
|
||
|
switch (type) {
|
||
|
case EVP_CTRL_AEAD_GET_TAG:
|
||
|
/* Always give the same tag */
|
||
|
memset(ptr, 0, EVP_GCM_TLS_TAG_LEN);
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
#define NO_PAYLOAD_LENGTH ((size_t)-1)
|
||
|
# define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
|
||
|
|
||
|
static int ossltest_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
|
||
|
const unsigned char *inkey,
|
||
|
const unsigned char *iv,
|
||
|
int enc)
|
||
|
{
|
||
|
EVP_AES_HMAC_SHA1 *key = data(ctx);
|
||
|
key->payload_length = NO_PAYLOAD_LENGTH;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
|
||
|
unsigned char *out,
|
||
|
const unsigned char *in,
|
||
|
size_t len)
|
||
|
{
|
||
|
EVP_AES_HMAC_SHA1 *key = data(ctx);
|
||
|
unsigned int l;
|
||
|
size_t plen = key->payload_length;
|
||
|
|
||
|
key->payload_length = NO_PAYLOAD_LENGTH;
|
||
|
|
||
|
if (len % AES_BLOCK_SIZE)
|
||
|
return 0;
|
||
|
|
||
|
if (EVP_CIPHER_CTX_is_encrypting(ctx)) {
|
||
|
if (plen == NO_PAYLOAD_LENGTH)
|
||
|
plen = len;
|
||
|
else if (len !=
|
||
|
((plen + SHA_DIGEST_LENGTH +
|
||
|
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
|
||
|
return 0;
|
||
|
|
||
|
memmove(out, in, plen);
|
||
|
|
||
|
if (plen != len) { /* "TLS" mode of operation */
|
||
|
/* calculate HMAC and append it to payload */
|
||
|
fill_known_data(out + plen, SHA_DIGEST_LENGTH);
|
||
|
|
||
|
/* pad the payload|hmac */
|
||
|
plen += SHA_DIGEST_LENGTH;
|
||
|
for (l = len - plen - 1; plen < len; plen++)
|
||
|
out[plen] = l;
|
||
|
}
|
||
|
} else {
|
||
|
/* decrypt HMAC|padding at once */
|
||
|
memmove(out, in, len);
|
||
|
|
||
|
if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
|
||
|
unsigned int maxpad, pad;
|
||
|
|
||
|
if (key->tls_ver >= TLS1_1_VERSION) {
|
||
|
if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
|
||
|
return 0;
|
||
|
|
||
|
/* omit explicit iv */
|
||
|
in += AES_BLOCK_SIZE;
|
||
|
out += AES_BLOCK_SIZE;
|
||
|
len -= AES_BLOCK_SIZE;
|
||
|
} else if (len < (SHA_DIGEST_LENGTH + 1))
|
||
|
return 0;
|
||
|
|
||
|
/* figure out payload length */
|
||
|
pad = out[len - 1];
|
||
|
maxpad = len - (SHA_DIGEST_LENGTH + 1);
|
||
|
if (pad > maxpad)
|
||
|
return 0;
|
||
|
for (plen = len - pad - 1; plen < len; plen++)
|
||
|
if (out[plen] != pad)
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int ossltest_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
|
||
|
int arg, void *ptr)
|
||
|
{
|
||
|
EVP_AES_HMAC_SHA1 *key = data(ctx);
|
||
|
|
||
|
switch (type) {
|
||
|
case EVP_CTRL_AEAD_SET_MAC_KEY:
|
||
|
return 1;
|
||
|
|
||
|
case EVP_CTRL_AEAD_TLS1_AAD:
|
||
|
{
|
||
|
unsigned char *p = ptr;
|
||
|
unsigned int len;
|
||
|
|
||
|
if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
||
|
return -1;
|
||
|
|
||
|
len = p[arg - 2] << 8 | p[arg - 1];
|
||
|
key->tls_ver = p[arg - 4] << 8 | p[arg - 3];
|
||
|
|
||
|
if (EVP_CIPHER_CTX_is_encrypting(ctx)) {
|
||
|
key->payload_length = len;
|
||
|
if (key->tls_ver >= TLS1_1_VERSION) {
|
||
|
if (len < AES_BLOCK_SIZE)
|
||
|
return 0;
|
||
|
len -= AES_BLOCK_SIZE;
|
||
|
p[arg - 2] = len >> 8;
|
||
|
p[arg - 1] = len;
|
||
|
}
|
||
|
|
||
|
return (int)(((len + SHA_DIGEST_LENGTH +
|
||
|
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
|
||
|
- len);
|
||
|
} else {
|
||
|
key->payload_length = arg;
|
||
|
|
||
|
return SHA_DIGEST_LENGTH;
|
||
|
}
|
||
|
}
|
||
|
default:
|
||
|
return -1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int ossltest_rand_bytes(unsigned char *buf, int num)
|
||
|
{
|
||
|
unsigned char val = 1;
|
||
|
|
||
|
while (--num >= 0)
|
||
|
*buf++ = val++;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static int ossltest_rand_status(void)
|
||
|
{
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
static const RAND_METHOD *ossltest_rand_method(void)
|
||
|
{
|
||
|
|
||
|
static RAND_METHOD osslt_rand_meth = {
|
||
|
NULL,
|
||
|
ossltest_rand_bytes,
|
||
|
NULL,
|
||
|
NULL,
|
||
|
ossltest_rand_bytes,
|
||
|
ossltest_rand_status
|
||
|
};
|
||
|
|
||
|
return &osslt_rand_meth;
|
||
|
}
|