222561fe8e
Don't check for NULL before calling a free routine. This gets X509_.*free:
x509_name_ex_free X509_policy_tree_free X509_VERIFY_PARAM_free
X509_STORE_free X509_STORE_CTX_free X509_PKEY_free
X509_OBJECT_free_contents X509_LOOKUP_free X509_INFO_free
Reviewed-by: Richard Levitte <levitte@openssl.org>
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
/* Simple S/MIME signing example */
|
|
#include <openssl/pem.h>
|
|
#include <openssl/pkcs7.h>
|
|
#include <openssl/err.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
BIO *in = NULL, *out = NULL, *tbio = NULL;
|
|
X509 *scert = NULL;
|
|
EVP_PKEY *skey = NULL;
|
|
PKCS7 *p7 = NULL;
|
|
int ret = 1;
|
|
|
|
/*
|
|
* For simple S/MIME signing use PKCS7_DETACHED. On OpenSSL 0.9.9 only:
|
|
* for streaming detached set PKCS7_DETACHED|PKCS7_STREAM for streaming
|
|
* non-detached set PKCS7_STREAM
|
|
*/
|
|
int flags = PKCS7_DETACHED | PKCS7_STREAM;
|
|
|
|
OpenSSL_add_all_algorithms();
|
|
ERR_load_crypto_strings();
|
|
|
|
/* Read in signer certificate and private key */
|
|
tbio = BIO_new_file("signer.pem", "r");
|
|
|
|
if (!tbio)
|
|
goto err;
|
|
|
|
scert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
|
|
|
|
BIO_reset(tbio);
|
|
|
|
skey = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
|
|
|
|
if (!scert || !skey)
|
|
goto err;
|
|
|
|
/* Open content being signed */
|
|
|
|
in = BIO_new_file("sign.txt", "r");
|
|
|
|
if (!in)
|
|
goto err;
|
|
|
|
/* Sign content */
|
|
p7 = PKCS7_sign(scert, skey, NULL, in, flags);
|
|
|
|
if (!p7)
|
|
goto err;
|
|
|
|
out = BIO_new_file("smout.txt", "w");
|
|
if (!out)
|
|
goto err;
|
|
|
|
if (!(flags & PKCS7_STREAM))
|
|
BIO_reset(in);
|
|
|
|
/* Write out S/MIME message */
|
|
if (!SMIME_write_PKCS7(out, p7, in, flags))
|
|
goto err;
|
|
|
|
ret = 0;
|
|
|
|
err:
|
|
if (ret) {
|
|
fprintf(stderr, "Error Signing Data\n");
|
|
ERR_print_errors_fp(stderr);
|
|
}
|
|
PKCS7_free(p7);
|
|
X509_free(scert);
|
|
EVP_PKEY_free(skey);
|
|
BIO_free(in);
|
|
BIO_free(out);
|
|
BIO_free(tbio);
|
|
|
|
return ret;
|
|
|
|
}
|