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-rw-r--r--doc/examples/cms_dec.cpp111
1 files changed, 111 insertions, 0 deletions
diff --git a/doc/examples/cms_dec.cpp b/doc/examples/cms_dec.cpp
new file mode 100644
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--- /dev/null
+++ b/doc/examples/cms_dec.cpp
@@ -0,0 +1,111 @@
+#include <botan/cms_dec.h>
+using namespace Botan;
+
+#include <iostream>
+
+int main(int argc, char* argv[])
+ {
+ if(argc != 2)
+ {
+ printf("Usage: %s <filename>\n", argv[0]);
+ return 1;
+ }
+
+ LibraryInitializer init;
+
+ try {
+ X509_Certificate mycert("mycert.pem");
+ PKCS8_PrivateKey* mykey = PKCS8::load_key("mykey.pem", "cut");
+
+ X509_Certificate yourcert("yourcert.pem");
+ X509_Certificate cacert("cacert.pem");
+ X509_Certificate int_ca("int_ca.pem");
+
+ X509_Store store;
+ store.add_cert(mycert);
+ store.add_cert(yourcert);
+ store.add_cert(cacert, true);
+ store.add_cert(int_ca);
+
+ DataSource_Stream message(argv[1]);
+
+ User_Interface ui;
+
+ CMS_Decoder decoder(message, store, ui, mykey);
+
+ while(decoder.layer_type() != CMS_Decoder::DATA)
+ {
+ CMS_Decoder::Status status = decoder.layer_status();
+ CMS_Decoder::Content_Type content = decoder.layer_type();
+
+ if(status == CMS_Decoder::FAILURE)
+ {
+ std::cout << "Failure reading CMS data" << std::endl;
+ break;
+ }
+
+ if(content == CMS_Decoder::DIGESTED)
+ {
+ std::cout << "Digested data, hash = " << decoder.layer_info()
+ << std::endl;
+ std::cout << "Hash is "
+ << ((status == CMS_Decoder::GOOD) ? "good" : "bad")
+ << std::endl;
+ }
+
+ if(content == CMS_Decoder::SIGNED)
+ {
+ // how to handle multiple signers? they can all exist within a
+ // single level...
+
+ std::cout << "Signed by " << decoder.layer_info() << std::endl;
+ //std::cout << "Sign time: " << decoder.xxx() << std::endl;
+ std::cout << "Signature is ";
+ if(status == CMS_Decoder::GOOD)
+ std::cout << "valid";
+ else if(status == CMS_Decoder::BAD)
+ std::cout << "bad";
+ else if(status == CMS_Decoder::NO_KEY)
+ std::cout << "(cannot check, no known cert)";
+ std::cout << std::endl;
+ }
+ if(content == CMS_Decoder::ENVELOPED ||
+ content == CMS_Decoder::COMPRESSED ||
+ content == CMS_Decoder::AUTHENTICATED)
+ {
+ if(content == CMS_Decoder::ENVELOPED)
+ std::cout << "Enveloped";
+ if(content == CMS_Decoder::COMPRESSED)
+ std::cout << "Compressed";
+ if(content == CMS_Decoder::AUTHENTICATED)
+ std::cout << "MACed";
+
+ std::cout << ", algo = " << decoder.layer_info() << std::endl;
+
+ if(content == CMS_Decoder::AUTHENTICATED)
+ {
+ std::cout << "MAC status is ";
+ if(status == CMS_Decoder::GOOD)
+ std::cout << "valid";
+ else if(status == CMS_Decoder::BAD)
+ std::cout << "bad";
+ else if(status == CMS_Decoder::NO_KEY)
+ std::cout << "(cannot check, no key)";
+ std::cout << std::endl;
+ }
+ }
+ decoder.next_layer();
+ }
+
+ if(decoder.layer_type() == CMS_Decoder::DATA)
+ std::cout << "Message is \"" << decoder.get_data()
+ << '"' << std::endl;
+ else
+ std::cout << "No data anywhere?" << std::endl;
+ }
+ catch(std::exception& e)
+ {
+ std::cerr << e.what() << std::endl;
+ }
+ return 0;
+ }