1 files changed, 55 insertions, 0 deletions
diff --git a/openssl/demos/cms/cms_uncomp.c b/openssl/demos/cms/cms_uncomp.c
new file mode 100644
index 0000000..392f4b4
--- /dev/null
+++ b/openssl/demos/cms/cms_uncomp.c
@@ -0,0 +1,55 @@
+/* Simple S/MIME uncompression example */
+#include <openssl/pem.h>
+#include <openssl/cms.h>
+#include <openssl/err.h>
+
+int main(int argc, char **argv)
+{
+    BIO *in = NULL, *out = NULL;
+    CMS_ContentInfo *cms = NULL;
+    int ret = 1;
+
+    OpenSSL_add_all_algorithms();
+    ERR_load_crypto_strings();
+
+    /* Open compressed content */
+
+    in = BIO_new_file("smcomp.txt", "r");
+
+    if (!in)
+        goto err;
+
+    /* Sign content */
+    cms = SMIME_read_CMS(in, NULL);
+
+    if (!cms)
+        goto err;
+
+    out = BIO_new_file("smuncomp.txt", "w");
+    if (!out)
+        goto err;
+
+    /* Uncompress S/MIME message */
+    if (!CMS_uncompress(cms, out, NULL, 0))
+        goto err;
+
+    ret = 0;
+
+ err:
+
+    if (ret) {
+        fprintf(stderr, "Error Uncompressing Data\n");
+        ERR_print_errors_fp(stderr);
+    }
+
+    if (cms)
+        CMS_ContentInfo_free(cms);
+
+    if (in)
+        BIO_free(in);
+    if (out)
+        BIO_free(out);
+
+    return ret;
+
+}