| /* |
| * 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, NID_aes_128_gcm, 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); |
| int ossltest_aes128_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
| const unsigned char *iv, int enc); |
| int ossltest_aes128_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
| const unsigned char *in, size_t inl); |
| static int ossltest_aes128_gcm_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, |
| void *ptr); |
| |
| 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 EVP_CIPHER *_hidden_aes_128_gcm = NULL; |
| |
| #define AES_GCM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \ |
| | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \ |
| | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \ |
| | EVP_CIPH_CUSTOM_COPY |EVP_CIPH_FLAG_AEAD_CIPHER \ |
| | EVP_CIPH_GCM_MODE) |
| |
| static const EVP_CIPHER *ossltest_aes_128_gcm(void) |
| { |
| if (_hidden_aes_128_gcm == NULL |
| && ((_hidden_aes_128_gcm = EVP_CIPHER_meth_new(NID_aes_128_gcm, |
| 1 /* block size */, |
| 16 /* key len */)) == NULL |
| || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_gcm,12) |
| || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_gcm, AES_GCM_FLAGS) |
| || !EVP_CIPHER_meth_set_init(_hidden_aes_128_gcm, |
| ossltest_aes128_gcm_init_key) |
| || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_gcm, |
| ossltest_aes128_gcm_cipher) |
| || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_gcm, |
| ossltest_aes128_gcm_ctrl) |
| || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_gcm, |
| EVP_CIPHER_impl_ctx_size(EVP_aes_128_gcm())))) { |
| EVP_CIPHER_meth_free(_hidden_aes_128_gcm); |
| _hidden_aes_128_gcm = NULL; |
| } |
| return _hidden_aes_128_gcm; |
| } |
| |
| static void destroy_ciphers(void) |
| { |
| EVP_CIPHER_meth_free(_hidden_aes_128_cbc); |
| EVP_CIPHER_meth_free(_hidden_aes_128_gcm); |
| _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; |
| case NID_aes_128_gcm: |
| *cipher = ossltest_aes_128_gcm(); |
| 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; |
| } |
| |
| 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); |
| } |
| |
| |
| 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 */ |
| 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 */ |
| 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; |
| } |