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      1 /*
      2  * Copyright 1995-2020 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 "internal/nelem.h"
     22 #include "testutil.h"
     23 
     24 #if defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_MDC2)
     25 # define OPENSSL_NO_MDC2
     26 #endif
     27 
     28 #ifndef OPENSSL_NO_MDC2
     29 # include <openssl/evp.h>
     30 # include <openssl/mdc2.h>
     31 
     32 # ifdef CHARSET_EBCDIC
     33 #  include <openssl/ebcdic.h>
     34 # endif
     35 
     36 static unsigned char pad1[16] = {
     37     0x42, 0xE5, 0x0C, 0xD2, 0x24, 0xBA, 0xCE, 0xBA,
     38     0x76, 0x0B, 0xDD, 0x2B, 0xD4, 0x09, 0x28, 0x1A
     39 };
     40 
     41 static unsigned char pad2[16] = {
     42     0x2E, 0x46, 0x79, 0xB5, 0xAD, 0xD9, 0xCA, 0x75,
     43     0x35, 0xD8, 0x7A, 0xFE, 0xAB, 0x33, 0xBE, 0xE2
     44 };
     45 
     46 static int test_mdc2(void)
     47 {
     48     int testresult = 0;
     49     unsigned int pad_type = 2;
     50     unsigned char md[MDC2_DIGEST_LENGTH];
     51     EVP_MD_CTX *c;
     52     static char text[] = "Now is the time for all ";
     53     size_t tlen = strlen(text), i = 0;
     54     OSSL_PROVIDER *prov = NULL;
     55     OSSL_PARAM params[2];
     56 
     57     params[i++] = OSSL_PARAM_construct_uint(OSSL_DIGEST_PARAM_PAD_TYPE,
     58                                             &pad_type),
     59     params[i++] = OSSL_PARAM_construct_end();
     60 
     61     prov = OSSL_PROVIDER_load(NULL, "legacy");
     62 # ifdef CHARSET_EBCDIC
     63     ebcdic2ascii(text, text, tlen);
     64 # endif
     65 
     66     c = EVP_MD_CTX_new();
     67     if (!TEST_ptr(c)
     68         || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL))
     69         || !TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
     70         || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
     71         || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad1, MDC2_DIGEST_LENGTH)
     72         || !TEST_true(EVP_DigestInit_ex(c, EVP_mdc2(), NULL)))
     73         goto end;
     74 
     75     if (!TEST_int_gt(EVP_MD_CTX_set_params(c, params), 0)
     76         || !TEST_true(EVP_DigestUpdate(c, (unsigned char *)text, tlen))
     77         || !TEST_true(EVP_DigestFinal_ex(c, &(md[0]), NULL))
     78         || !TEST_mem_eq(md, MDC2_DIGEST_LENGTH, pad2, MDC2_DIGEST_LENGTH))
     79         goto end;
     80 
     81     testresult = 1;
     82  end:
     83     EVP_MD_CTX_free(c);
     84     OSSL_PROVIDER_unload(prov);
     85     return testresult;
     86 }
     87 #endif
     88 
     89 int setup_tests(void)
     90 {
     91 #ifndef OPENSSL_NO_MDC2
     92     ADD_TEST(test_mdc2);
     93 #endif
     94     return 1;
     95 }
     96