McEliece cleanups

Remove and consolidate various headers

Reduce memory usage of GF2m_Field by sharing the log and exponent
tables across all instances of a particular word size.

Remove McEliece_Public_Operation and McEliece_Private_Operation which
were difficult to use safely. Instead only the KEM operations are exposed.

Add McEliece_PublicKey::random_plaintext_element

Add command line `mce` tool and some McEliece documentation

Convert the speed program to check McEliece keys of the suggested size

Add McEliece KATs for both key generation and KEM

Fix HMAC_DRBG constructor which derefed a pointer before its time

1 files changed, 52 insertions, 0 deletions

diff --git a/src/lib/pubkey/mce/mce_internal.h b/src/lib/pubkey/mce/mce_internal.h
new file mode 100644
index 000000000..d35479080
--- /dev/null
+++ b/src/lib/pubkey/mce/mce_internal.h
@@ -0,0 +1,52 @@
+/**
+ * (C) Copyright Projet SECRET, INRIA, Rocquencourt
+ * (C) Bhaskar Biswas and  Nicolas Sendrier
+ *
+ * (C) 2014 cryptosource GmbH
+ * (C) 2014 Falko Strenzke [email protected]
+ *
+ * Botan is released under the Simplified BSD License (see license.txt)
+ *
+ */
+
+#ifndef BOTAN_MCELIECE_INTERNAL_H__
+#define BOTAN_MCELIECE_INTERNAL_H__
+
+#include <botan/secmem.h>
+#include <botan/types.h>
+#include <botan/pk_ops.h>
+#include <botan/mceliece.h>
+
+namespace Botan {
+
+void mceliece_decrypt(secure_vector<byte>& plaintext_out,
+                      secure_vector<byte>& error_mask_out,
+                      const byte ciphertext[],
+                      size_t ciphertext_len,
+                      const McEliece_PrivateKey& key);
+
+void mceliece_decrypt(secure_vector<byte>& plaintext_out,
+                      secure_vector<byte>& error_mask_out,
+                      const secure_vector<byte>& ciphertext,
+                      const McEliece_PrivateKey& key);
+
+secure_vector<byte> mceliece_decrypt(
+   secure_vector<gf2m> & error_pos,
+   const byte *ciphertext, u32bit ciphertext_len,
+   const McEliece_PrivateKey & key);
+
+void mceliece_encrypt(secure_vector<byte>& ciphertext_out,
+                      secure_vector<byte>& error_mask_out,
+                      const secure_vector<byte>& plaintext,
+                      const McEliece_PublicKey& key,
+                      RandomNumberGenerator& rng);
+
+McEliece_PrivateKey generate_mceliece_key(RandomNumberGenerator &rng,
+                                          u32bit ext_deg,
+                                          u32bit code_length,
+                                          u32bit t);
+
+}
+
+
+#endif