| Dr. Stephen Henson | b2b2daf | 2007-04-13 20:40:47 +0000 | [diff] [blame] | 1 | /* Simple S/MIME signing example */ |
| 2 | #include <openssl/pem.h> |
| 3 | #include <openssl/pkcs7.h> |
| 4 | #include <openssl/err.h> |
| 5 | |
| 6 | int main(int argc, char **argv) |
| 7 | { |
| 8 | BIO *in = NULL, *out = NULL, *tbio = NULL; |
| 9 | X509 *rcert = NULL; |
| 10 | EVP_PKEY *rkey = NULL; |
| 11 | PKCS7 *p7 = NULL; |
| 12 | int ret = 1; |
| 13 | |
| 14 | OpenSSL_add_all_algorithms(); |
| 15 | ERR_load_crypto_strings(); |
| 16 | |
| 17 | /* Read in recipient certificate and private key */ |
| 18 | tbio = BIO_new_file("signer.pem", "r"); |
| 19 | |
| 20 | if (!tbio) |
| 21 | goto err; |
| 22 | |
| 23 | rcert = PEM_read_bio_X509(tbio, NULL, 0, NULL); |
| 24 | |
| 25 | BIO_reset(tbio); |
| 26 | |
| 27 | rkey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL); |
| 28 | |
| 29 | if (!rcert || !rkey) |
| 30 | goto err; |
| 31 | |
| 32 | /* Open content being signed */ |
| 33 | |
| 34 | in = BIO_new_file("smencr.txt", "r"); |
| 35 | |
| 36 | if (!in) |
| 37 | goto err; |
| 38 | |
| 39 | /* Sign content */ |
| 40 | p7 = SMIME_read_PKCS7(in, NULL); |
| 41 | |
| 42 | if (!p7) |
| 43 | goto err; |
| 44 | |
| 45 | out = BIO_new_file("encrout.txt", "w"); |
| 46 | if (!out) |
| 47 | goto err; |
| 48 | |
| 49 | /* Decrypt S/MIME message */ |
| 50 | if (!PKCS7_decrypt(p7, rkey, rcert, out, 0)) |
| 51 | goto err; |
| 52 | |
| 53 | ret = 0; |
| 54 | |
| 55 | err: |
| 56 | |
| 57 | if (ret) |
| 58 | { |
| 59 | fprintf(stderr, "Error Signing Data\n"); |
| 60 | ERR_print_errors_fp(stderr); |
| 61 | } |
| 62 | |
| 63 | if (p7) |
| 64 | PKCS7_free(p7); |
| 65 | if (rcert) |
| 66 | X509_free(rcert); |
| 67 | if (rkey) |
| 68 | EVP_PKEY_free(rkey); |
| 69 | |
| 70 | if (in) |
| 71 | BIO_free(in); |
| 72 | if (out) |
| 73 | BIO_free(out); |
| 74 | if (tbio) |
| 75 | BIO_free(tbio); |
| 76 | |
| 77 | return ret; |
| 78 | |
| 79 | } |
| 80 | |
| 81 | |
| 82 | |
| 83 | |
