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Commit | Line | Data |
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9e200689 | 1 | /* |
da1c088f | 2 | * Copyright 2007-2023 The OpenSSL Project Authors. All Rights Reserved. |
9e200689 | 3 | * |
5e73e6ba | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
9e200689 RS |
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 | ||
b2b2dafc DSH |
10 | /* Simple S/MIME verification example */ |
11 | #include <openssl/pem.h> | |
12 | #include <openssl/pkcs7.h> | |
13 | #include <openssl/err.h> | |
14 | ||
15 | int main(int argc, char **argv) | |
0f113f3e MC |
16 | { |
17 | BIO *in = NULL, *out = NULL, *tbio = NULL, *cont = NULL; | |
18 | X509_STORE *st = NULL; | |
19 | X509 *cacert = NULL; | |
20 | PKCS7 *p7 = NULL; | |
09ff84bd | 21 | int ret = EXIT_FAILURE; |
b2b2dafc | 22 | |
0f113f3e MC |
23 | OpenSSL_add_all_algorithms(); |
24 | ERR_load_crypto_strings(); | |
b2b2dafc | 25 | |
0f113f3e | 26 | /* Set up trusted CA certificate store */ |
b2b2dafc | 27 | |
0f113f3e | 28 | st = X509_STORE_new(); |
c81eed84 PH |
29 | if (st == NULL) |
30 | goto err; | |
b2b2dafc | 31 | |
0f113f3e MC |
32 | /* Read in signer certificate and private key */ |
33 | tbio = BIO_new_file("cacert.pem", "r"); | |
b2b2dafc | 34 | |
c81eed84 | 35 | if (tbio == NULL) |
0f113f3e | 36 | goto err; |
b2b2dafc | 37 | |
0f113f3e | 38 | cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL); |
b2b2dafc | 39 | |
c81eed84 | 40 | if (cacert == NULL) |
0f113f3e | 41 | goto err; |
b2b2dafc | 42 | |
0f113f3e MC |
43 | if (!X509_STORE_add_cert(st, cacert)) |
44 | goto err; | |
b2b2dafc | 45 | |
0f113f3e | 46 | /* Open content being signed */ |
b2b2dafc | 47 | |
0f113f3e | 48 | in = BIO_new_file("smout.txt", "r"); |
b2b2dafc | 49 | |
c81eed84 | 50 | if (in == NULL) |
0f113f3e | 51 | goto err; |
b2b2dafc | 52 | |
0f113f3e MC |
53 | /* Sign content */ |
54 | p7 = SMIME_read_PKCS7(in, &cont); | |
b2b2dafc | 55 | |
c81eed84 | 56 | if (p7 == NULL) |
0f113f3e | 57 | goto err; |
b2b2dafc | 58 | |
0f113f3e MC |
59 | /* File to output verified content to */ |
60 | out = BIO_new_file("smver.txt", "w"); | |
c81eed84 | 61 | if (out == NULL) |
0f113f3e | 62 | goto err; |
b2b2dafc | 63 | |
0f113f3e MC |
64 | if (!PKCS7_verify(p7, NULL, st, cont, out, 0)) { |
65 | fprintf(stderr, "Verification Failure\n"); | |
66 | goto err; | |
67 | } | |
b2b2dafc | 68 | |
0f113f3e | 69 | fprintf(stderr, "Verification Successful\n"); |
b2b2dafc | 70 | |
09ff84bd | 71 | ret = EXIT_SUCCESS; |
b2b2dafc | 72 | |
0f113f3e | 73 | err: |
09ff84bd | 74 | if (ret != EXIT_SUCCESS) { |
0f113f3e MC |
75 | fprintf(stderr, "Error Verifying Data\n"); |
76 | ERR_print_errors_fp(stderr); | |
77 | } | |
c81eed84 PH |
78 | |
79 | X509_STORE_free(st); | |
e0e920b1 | 80 | PKCS7_free(p7); |
222561fe | 81 | X509_free(cacert); |
ca3a82c3 RS |
82 | BIO_free(in); |
83 | BIO_free(out); | |
84 | BIO_free(tbio); | |
0f113f3e | 85 | return ret; |
0f113f3e | 86 | } |