1 files changed, 88 insertions, 0 deletions
diff --git a/demos/cms/cms_ver.c b/demos/cms/cms_ver.c
new file mode 100644
index 000000000000..3c0a7aa19ede
--- /dev/null
+++ b/demos/cms/cms_ver.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/* Simple S/MIME verification example */
+#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, *cont = NULL;
+    X509_STORE *st = NULL;
+    X509 *cacert = NULL;
+    CMS_ContentInfo *cms = NULL;
+
+    int ret = 1;
+
+    OpenSSL_add_all_algorithms();
+    ERR_load_crypto_strings();
+
+    /* Set up trusted CA certificate store */
+
+    st = X509_STORE_new();
+    if (st == NULL)
+        goto err;
+
+    /* Read in CA certificate */
+    tbio = BIO_new_file("cacert.pem", "r");
+
+    if (tbio == NULL)
+        goto err;
+
+    cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
+
+    if (cacert == NULL)
+        goto err;
+
+    if (!X509_STORE_add_cert(st, cacert))
+        goto err;
+
+    /* Open message being verified */
+
+    in = BIO_new_file("smout.txt", "r");
+
+    if (in == NULL)
+        goto err;
+
+    /* parse message */
+    cms = SMIME_read_CMS(in, &cont);
+
+    if (cms == NULL)
+        goto err;
+
+    /* File to output verified content to */
+    out = BIO_new_file("smver.txt", "w");
+    if (out == NULL)
+        goto err;
+
+    if (!CMS_verify(cms, NULL, st, cont, out, 0)) {
+        fprintf(stderr, "Verification Failure\n");
+        goto err;
+    }
+
+    fprintf(stderr, "Verification Successful\n");
+
+    ret = 0;
+
+ err:
+
+    if (ret) {
+        fprintf(stderr, "Error Verifying Data\n");
+        ERR_print_errors_fp(stderr);
+    }
+
+    X509_STORE_free(st);
+    CMS_ContentInfo_free(cms);
+    X509_free(cacert);
+    BIO_free(in);
+    BIO_free(out);
+    BIO_free(tbio);
+    return ret;
+}