add: execute openssl fetcher to fetch openssl 1.0.1j

[cassiopeia.git] / lib / openssl / demos / smime / smsign.c

diff --git a/lib/openssl/demos/smime/smsign.c b/lib/openssl/demos/smime/smsign.c
new file mode 100644 (file)
index 0000000..ba78830
--- /dev/null
+++ b/lib/openssl/demos/smime/smsign.c
@@ -0,0 +1,89 @@
+/* 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);
+               }
+
+       if (p7)
+               PKCS7_free(p7);
+       if (scert)
+               X509_free(scert);
+       if (skey)
+               EVP_PKEY_free(skey);
+
+       if (in)
+               BIO_free(in);
+       if (out)
+               BIO_free(out);
+       if (tbio)
+               BIO_free(tbio);
+
+       return ret;
+
+       }