1 /* Simple S/MIME decryption example */
2 #include <openssl/pem.h>
3 #include <openssl/cms.h>
4 #include <openssl/err.h>
6 int main(int argc, char **argv)
8 BIO *in = NULL, *out = NULL, *tbio = NULL;
10 EVP_PKEY *rkey = NULL;
11 CMS_ContentInfo *cms = NULL;
14 OpenSSL_add_all_algorithms();
15 ERR_load_crypto_strings();
17 /* Read in recipient certificate and private key */
18 tbio = BIO_new_file("signer.pem", "r");
23 rcert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
27 rkey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
32 /* Open S/MIME message to decrypt */
34 in = BIO_new_file("smencr.txt", "r");
40 cms = SMIME_read_CMS(in, NULL);
45 out = BIO_new_file("decout.txt", "w");
49 /* Decrypt S/MIME message */
50 if (!CMS_decrypt(cms, rkey, rcert, NULL, out, 0))
58 fprintf(stderr, "Error Decrypting Data\n");
59 ERR_print_errors_fp(stderr);
62 CMS_ContentInfo_free(cms);