/* * Copyright 2008-2016 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 */ /* Simple S/MIME uncompression example */ #include <openssl/pem.h> #include <openssl/cms.h> #include <openssl/err.h> int main(int argc, char **argv) { BIO *in = NULL, *out = NULL; CMS_ContentInfo *cms = NULL; int ret = 1; OpenSSL_add_all_algorithms(); ERR_load_crypto_strings(); /* Open compressed content */ in = BIO_new_file("smcomp.txt", "r"); if (!in) goto err; /* Sign content */ cms = SMIME_read_CMS(in, NULL); if (!cms) goto err; out = BIO_new_file("smuncomp.txt", "w"); if (!out) goto err; /* Uncompress S/MIME message */ if (!CMS_uncompress(cms, out, NULL, 0)) goto err; ret = 0; err: if (ret) { fprintf(stderr, "Error Uncompressing Data\n"); ERR_print_errors_fp(stderr); } CMS_ContentInfo_free(cms); BIO_free(in); BIO_free(out); return ret; }