diff options
Diffstat (limited to 'openssl-1.1.0h/engines/e_ossltest.c')
| -rw-r--r-- | openssl-1.1.0h/engines/e_ossltest.c | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/openssl-1.1.0h/engines/e_ossltest.c b/openssl-1.1.0h/engines/e_ossltest.c new file mode 100644 index 0000000..b4c83cb --- /dev/null +++ b/openssl-1.1.0h/engines/e_ossltest.c @@ -0,0 +1,568 @@ +/* + * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (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 + */ + +/* + * This is the OSSLTEST engine. It provides deliberately crippled digest + * implementations for test purposes. It is highly insecure and must NOT be + * used for any purpose except testing + */ + +#include <stdio.h> +#include <string.h> + +#include <openssl/engine.h> +#include <openssl/sha.h> +#include <openssl/md5.h> +#include <openssl/rsa.h> +#include <openssl/evp.h> +#include <openssl/modes.h> +#include <openssl/aes.h> +#include <openssl/crypto.h> + +#define OSSLTEST_LIB_NAME "OSSLTEST" +#include "e_ossltest_err.c" + +/* Engine Id and Name */ +static const char *engine_ossltest_id = "ossltest"; +static const char *engine_ossltest_name = "OpenSSL Test engine support"; + + +/* Engine Lifetime functions */ +static int ossltest_destroy(ENGINE *e); +static int ossltest_init(ENGINE *e); +static int ossltest_finish(ENGINE *e); +void ENGINE_load_ossltest(void); + + +/* Set up digests */ +static int ossltest_digests(ENGINE *e, const EVP_MD **digest, + const int **nids, int nid); + +/* MD5 */ +static int digest_md5_init(EVP_MD_CTX *ctx); +static int digest_md5_update(EVP_MD_CTX *ctx, const void *data, + size_t count); +static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md); + +static EVP_MD *_hidden_md5_md = NULL; +static const EVP_MD *digest_md5(void) +{ + if (_hidden_md5_md == NULL) { + EVP_MD *md; + + if ((md = EVP_MD_meth_new(NID_md5, NID_md5WithRSAEncryption)) == NULL + || !EVP_MD_meth_set_result_size(md, MD5_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(md, MD5_CBLOCK) + || !EVP_MD_meth_set_app_datasize(md, + sizeof(EVP_MD *) + sizeof(MD5_CTX)) + || !EVP_MD_meth_set_flags(md, 0) + || !EVP_MD_meth_set_init(md, digest_md5_init) + || !EVP_MD_meth_set_update(md, digest_md5_update) + || !EVP_MD_meth_set_final(md, digest_md5_final)) { + EVP_MD_meth_free(md); + md = NULL; + } + _hidden_md5_md = md; + } + return _hidden_md5_md; +} + +/* SHA1 */ +static int digest_sha1_init(EVP_MD_CTX *ctx); +static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data, + size_t count); +static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md); + +static EVP_MD *_hidden_sha1_md = NULL; +static const EVP_MD *digest_sha1(void) +{ + if (_hidden_sha1_md == NULL) { + EVP_MD *md; + + if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL + || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK) + || !EVP_MD_meth_set_app_datasize(md, + sizeof(EVP_MD *) + sizeof(SHA_CTX)) + || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) + || !EVP_MD_meth_set_init(md, digest_sha1_init) + || !EVP_MD_meth_set_update(md, digest_sha1_update) + || !EVP_MD_meth_set_final(md, digest_sha1_final)) { + EVP_MD_meth_free(md); + md = NULL; + } + _hidden_sha1_md = md; + } + return _hidden_sha1_md; +} + +/* SHA256 */ +static int digest_sha256_init(EVP_MD_CTX *ctx); +static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data, + size_t count); +static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md); + +static EVP_MD *_hidden_sha256_md = NULL; +static const EVP_MD *digest_sha256(void) +{ + if (_hidden_sha256_md == NULL) { + EVP_MD *md; + + if ((md = EVP_MD_meth_new(NID_sha256, NID_sha256WithRSAEncryption)) == NULL + || !EVP_MD_meth_set_result_size(md, SHA256_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(md, SHA256_CBLOCK) + || !EVP_MD_meth_set_app_datasize(md, + sizeof(EVP_MD *) + sizeof(SHA256_CTX)) + || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) + || !EVP_MD_meth_set_init(md, digest_sha256_init) + || !EVP_MD_meth_set_update(md, digest_sha256_update) + || !EVP_MD_meth_set_final(md, digest_sha256_final)) { + EVP_MD_meth_free(md); + md = NULL; + } + _hidden_sha256_md = md; + } + return _hidden_sha256_md; +} + +/* SHA384/SHA512 */ +static int digest_sha384_init(EVP_MD_CTX *ctx); +static int digest_sha512_init(EVP_MD_CTX *ctx); +static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, + size_t count); +static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md); +static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md); + +static EVP_MD *_hidden_sha384_md = NULL; +static const EVP_MD *digest_sha384(void) +{ + if (_hidden_sha384_md == NULL) { + EVP_MD *md; + + if ((md = EVP_MD_meth_new(NID_sha384, NID_sha384WithRSAEncryption)) == NULL + || !EVP_MD_meth_set_result_size(md, SHA384_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK) + || !EVP_MD_meth_set_app_datasize(md, + sizeof(EVP_MD *) + sizeof(SHA512_CTX)) + || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) + || !EVP_MD_meth_set_init(md, digest_sha384_init) + || !EVP_MD_meth_set_update(md, digest_sha512_update) + || !EVP_MD_meth_set_final(md, digest_sha384_final)) { + EVP_MD_meth_free(md); + md = NULL; + } + _hidden_sha384_md = md; + } + return _hidden_sha384_md; +} +static EVP_MD *_hidden_sha512_md = NULL; +static const EVP_MD *digest_sha512(void) +{ + if (_hidden_sha512_md == NULL) { + EVP_MD *md; + + if ((md = EVP_MD_meth_new(NID_sha512, NID_sha512WithRSAEncryption)) == NULL + || !EVP_MD_meth_set_result_size(md, SHA512_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(md, SHA512_CBLOCK) + || !EVP_MD_meth_set_app_datasize(md, + sizeof(EVP_MD *) + sizeof(SHA512_CTX)) + || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) + || !EVP_MD_meth_set_init(md, digest_sha512_init) + || !EVP_MD_meth_set_update(md, digest_sha512_update) + || !EVP_MD_meth_set_final(md, digest_sha512_final)) { + EVP_MD_meth_free(md); + md = NULL; + } + _hidden_sha512_md = md; + } + return _hidden_sha512_md; +} +static void destroy_digests(void) +{ + EVP_MD_meth_free(_hidden_md5_md); + _hidden_md5_md = NULL; + EVP_MD_meth_free(_hidden_sha1_md); + _hidden_sha1_md = NULL; + EVP_MD_meth_free(_hidden_sha256_md); + _hidden_sha256_md = NULL; + EVP_MD_meth_free(_hidden_sha384_md); + _hidden_sha384_md = NULL; + EVP_MD_meth_free(_hidden_sha512_md); + _hidden_sha512_md = NULL; +} +static int ossltest_digest_nids(const int **nids) +{ + static int digest_nids[6] = { 0, 0, 0, 0, 0, 0 }; + static int pos = 0; + static int init = 0; + + if (!init) { + const EVP_MD *md; + if ((md = digest_md5()) != NULL) + digest_nids[pos++] = EVP_MD_type(md); + if ((md = digest_sha1()) != NULL) + digest_nids[pos++] = EVP_MD_type(md); + if ((md = digest_sha256()) != NULL) + digest_nids[pos++] = EVP_MD_type(md); + if ((md = digest_sha384()) != NULL) + digest_nids[pos++] = EVP_MD_type(md); + if ((md = digest_sha512()) != NULL) + digest_nids[pos++] = EVP_MD_type(md); + digest_nids[pos] = 0; + init = 1; + } + *nids = digest_nids; + return pos; +} + +/* Setup ciphers */ +static int ossltest_ciphers(ENGINE *, const EVP_CIPHER **, + const int **, int); + +static int ossltest_cipher_nids[] = { + NID_aes_128_cbc, 0 +}; + +/* AES128 */ + +int ossltest_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc); +int ossltest_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl); + +static EVP_CIPHER *_hidden_aes_128_cbc = NULL; +static const EVP_CIPHER *ossltest_aes_128_cbc(void) +{ + if (_hidden_aes_128_cbc == NULL + && ((_hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc, + 16 /* block size */, + 16 /* key len */)) == NULL + || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16) + || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc, + EVP_CIPH_FLAG_DEFAULT_ASN1 + | EVP_CIPH_CBC_MODE) + || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc, + ossltest_aes128_init_key) + || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc, + ossltest_aes128_cbc_cipher) + || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc, + EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())))) { + EVP_CIPHER_meth_free(_hidden_aes_128_cbc); + _hidden_aes_128_cbc = NULL; + } + return _hidden_aes_128_cbc; +} +static void destroy_ciphers(void) +{ + EVP_CIPHER_meth_free(_hidden_aes_128_cbc); + _hidden_aes_128_cbc = NULL; +} + +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_destroy_function(e, ossltest_destroy) + || !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; + 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. + */ +#undef data +#define data(ctx) ((MD5_CTX *)EVP_MD_CTX_md_data(ctx)) +static int digest_md5_init(EVP_MD_CTX *ctx) +{ + return MD5_Init(data(ctx)); +} + +static int digest_md5_update(EVP_MD_CTX *ctx, const void *data, + size_t count) +{ + return MD5_Update(data(ctx), data, (size_t)count); +} + +static int digest_md5_final(EVP_MD_CTX *ctx, unsigned char *md) +{ + int ret; + ret = MD5_Final(md, data(ctx)); + + if (ret > 0) { + fill_known_data(md, MD5_DIGEST_LENGTH); + } + return ret; +} + +/* + * SHA1 implementation. + */ +#undef data +#define data(ctx) ((SHA_CTX *)EVP_MD_CTX_md_data(ctx)) +static int digest_sha1_init(EVP_MD_CTX *ctx) +{ + return SHA1_Init(data(ctx)); +} + +static int digest_sha1_update(EVP_MD_CTX *ctx, const void *data, + size_t count) +{ + return SHA1_Update(data(ctx), data, (size_t)count); +} + +static int digest_sha1_final(EVP_MD_CTX *ctx, unsigned char *md) +{ + int ret; + ret = SHA1_Final(md, data(ctx)); + + if (ret > 0) { + fill_known_data(md, SHA_DIGEST_LENGTH); + } + return ret; +} + +/* + * SHA256 implementation. + */ +#undef data +#define data(ctx) ((SHA256_CTX *)EVP_MD_CTX_md_data(ctx)) +static int digest_sha256_init(EVP_MD_CTX *ctx) +{ + return SHA256_Init(data(ctx)); +} + +static int digest_sha256_update(EVP_MD_CTX *ctx, const void *data, + size_t count) +{ + return SHA256_Update(data(ctx), data, (size_t)count); +} + +static int digest_sha256_final(EVP_MD_CTX *ctx, unsigned char *md) +{ + int ret; + ret = SHA256_Final(md, data(ctx)); + + if (ret > 0) { + fill_known_data(md, SHA256_DIGEST_LENGTH); + } + return ret; +} + +/* + * SHA384/512 implementation. + */ +#undef data +#define data(ctx) ((SHA512_CTX *)EVP_MD_CTX_md_data(ctx)) +static int digest_sha384_init(EVP_MD_CTX *ctx) +{ + return SHA384_Init(data(ctx)); +} + +static int digest_sha512_init(EVP_MD_CTX *ctx) +{ + return SHA512_Init(data(ctx)); +} + +static int digest_sha512_update(EVP_MD_CTX *ctx, const void *data, + size_t count) +{ + return SHA512_Update(data(ctx), data, (size_t)count); +} + +static int digest_sha384_final(EVP_MD_CTX *ctx, unsigned char *md) +{ + int ret; + /* Actually uses SHA512_Final! */ + ret = SHA512_Final(md, data(ctx)); + + if (ret > 0) { + fill_known_data(md, SHA384_DIGEST_LENGTH); + } + return ret; +} + +static int digest_sha512_final(EVP_MD_CTX *ctx, unsigned char *md) +{ + int ret; + ret = SHA512_Final(md, data(ctx)); + + if (ret > 0) { + fill_known_data(md, SHA512_DIGEST_LENGTH); + } + return ret; +} + +/* + * AES128 Implementation + */ + +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); +} + +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); + if (tmpbuf == NULL) + return -1; + + /* Remember what we were asked to encrypt */ + 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 */ + memcpy(out, tmpbuf, inl); + OPENSSL_free(tmpbuf); + + return ret; +} |