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      1 /*
      2  * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 /*
     11  * MDC2 low level APIs are deprecated for public use, but still ok for
     12  * internal use.
     13  */
     14 #include "internal/deprecated.h"
     15 
     16 #include <string.h>
     17 #include <openssl/provider.h>
     18 #include <openssl/params.h>
     19 #include <openssl/types.h>
     20 #include <openssl/core_names.h>
     21 #include "testutil.h"
     22 
     23 #if defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_MDC2)
     24 #define OPENSSL_NO_MDC2
     25 #endif
     26 
     27 #ifndef OPENSSL_NO_MDC2
     28 #include <openssl/evp.h>
     29 #include <openssl/mdc2.h>
     30 
     31 #ifdef CHARSET_EBCDIC
     32 #include <openssl/ebcdic.h>
     33 #endif
     34 
     35 static unsigned char pad1[16] = {
     36     0x42, 0xE5, 0x0C, 0xD2, 0x24, 0xBA, 0xCE, 0xBA,
     37     0x76, 0x0B, 0xDD, 0x2B, 0xD4, 0x09, 0x28, 0x1A
     38 };
     39 
     40 static unsigned char pad2[16] = {
     41     0x2E, 0x46, 0x79, 0xB5, 0xAD, 0xD9, 0xCA, 0x75,
     42     0x35, 0xD8, 0x7A, 0xFE, 0xAB, 0x33, 0xBE, 0xE2
     43 };
     44 
     45 static int test_mdc2(void)
     46 {
     47     int testresult = 0;
     48     unsigned int pad_type = 2;
     49     unsigned char md[MDC2_DIGEST_LENGTH];
     50     EVP_MD_CTX *c = NULL;
     51     static char text[] = "Now is the time for all ";
     52     size_t tlen = strlen(text), i = 0;
     53     OSSL_PROVIDER *prov = NULL;
     54     OSSL_PARAM params[2];
     55 
     56     params[i++] = OSSL_PARAM_construct_uint(OSSL_DIGEST_PARAM_PAD_TYPE,
     57         &pad_type),
     58     params[i++] = OSSL_PARAM_construct_end();
     59 
     60     prov = OSSL_PROVIDER_load(NULL, "legacy");
     61     if (!TEST_ptr(prov))
     62         goto end;
     63 
     64 #ifdef CHARSET_EBCDIC
     65     ebcdic2ascii(text, text, tlen);
     66 #endif
     67 
     68     c = EVP_MD_CTX_new();
     69     if (!TEST_ptr(c)
     70         || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL))
     71         || !TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
     72         || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
     73         || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad1, MDC2_DIGEST_LENGTH)
     74         || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL)))
     75         goto end;
     76 
     77     if (!TEST_int_gt(EVP_MD_CTX_set_params(c, params), 0)
     78         || !TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
     79         || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
     80         || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad2, MDC2_DIGEST_LENGTH))
     81         goto end;
     82 
     83     testresult = 1;
     84 end:
     85     EVP_MD_CTX_free(c);
     86     OSSL_PROVIDER_unload(prov);
     87     return testresult;
     88 }
     89 #endif
     90 
     91 int setup_tests(void)
     92 {
     93 #ifndef OPENSSL_NO_MDC2
     94     ADD_TEST(test_mdc2);
     95 #endif
     96     return 1;
     97 }
     98