CMS compressed data examples.
diff --git a/demos/cms/cms_uncomp.c b/demos/cms/cms_uncomp.c
new file mode 100644
index 0000000..f15ae2f
--- /dev/null
+++ b/demos/cms/cms_uncomp.c
@@ -0,0 +1,56 @@
+/* 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;
+
+ }
