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path: root/openssl/demos/cms/cms_sign2.c
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Diffstat (limited to 'openssl/demos/cms/cms_sign2.c')
-rw-r--r--openssl/demos/cms/cms_sign2.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/openssl/demos/cms/cms_sign2.c b/openssl/demos/cms/cms_sign2.c
new file mode 100644
index 000000000..36adee730
--- /dev/null
+++ b/openssl/demos/cms/cms_sign2.c
@@ -0,0 +1,103 @@
+/* S/MIME signing example: 2 signers */
+#include <openssl/pem.h>
+#include <openssl/cms.h>
+#include <openssl/err.h>
+
+int main(int argc, char **argv)
+ {
+ BIO *in = NULL, *out = NULL, *tbio = NULL;
+ X509 *scert = NULL, *scert2 = NULL;
+ EVP_PKEY *skey = NULL, *skey2 = NULL;
+ CMS_ContentInfo *cms = NULL;
+ int ret = 1;
+
+ OpenSSL_add_all_algorithms();
+ ERR_load_crypto_strings();
+
+ 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);
+
+ BIO_free(tbio);
+
+ tbio = BIO_new_file("signer2.pem", "r");
+
+ if (!tbio)
+ goto err;
+
+ scert2 = PEM_read_bio_X509(tbio, NULL, 0, NULL);
+
+ BIO_reset(tbio);
+
+ skey2 = PEM_read_bio_PrivateKey(tbio, NULL, 0, NULL);
+
+ if (!scert2 || !skey2)
+ goto err;
+
+ in = BIO_new_file("sign.txt", "r");
+
+ if (!in)
+ goto err;
+
+ cms = CMS_sign(NULL, NULL, NULL, in, CMS_STREAM|CMS_PARTIAL);
+
+ if (!cms)
+ goto err;
+
+ /* Add each signer in turn */
+
+ if (!CMS_add1_signer(cms, scert, skey, NULL, 0))
+ goto err;
+
+ if (!CMS_add1_signer(cms, scert2, skey2, NULL, 0))
+ goto err;
+
+ out = BIO_new_file("smout.txt", "w");
+ if (!out)
+ goto err;
+
+ /* NB: content included and finalized by SMIME_write_CMS */
+
+ if (!SMIME_write_CMS(out, cms, in, CMS_STREAM))
+ goto err;
+
+ ret = 0;
+
+ err:
+
+ if (ret)
+ {
+ fprintf(stderr, "Error Signing Data\n");
+ ERR_print_errors_fp(stderr);
+ }
+
+ if (cms)
+ CMS_ContentInfo_free(cms);
+
+ if (scert)
+ X509_free(scert);
+ if (skey)
+ EVP_PKEY_free(skey);
+
+ if (scert2)
+ X509_free(scert2);
+ if (skey)
+ EVP_PKEY_free(skey2);
+
+ if (in)
+ BIO_free(in);
+ if (out)
+ BIO_free(out);
+ if (tbio)
+ BIO_free(tbio);
+
+ return ret;
+
+ }