propagate from branch 'net.randombit.botan.1_8' (head 6e8c18515725a70923b34118951252723dd4c29a)

            to branch 'net.randombit.botan' (head 77ba4ea5a4be36d6d029bcc852b2271edff0d679)

1 files changed, 55 insertions, 0 deletions

diff --git a/src/tss/tss.h b/src/tss/tss.h
new file mode 100644
index 000000000..0b26bfdcb
--- /dev/null
+++ b/src/tss/tss.h
@@ -0,0 +1,55 @@
+/*
+* RTSS (threshold secret sharing)
+* (C) 2009 Jack Lloyd <[email protected]>
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_RTSS_H__
+#define BOTAN_RTSS_H__
+
+#include <botan/secmem.h>
+#include <botan/hash.h>
+#include <botan/rng.h>
+#include <vector>
+
+namespace Botan {
+
+class RTSS_Share
+   {
+   public:
+      /**
+      * @arg M the number of shares needed to reconstruct
+      * @arg N the number of shares generated
+      * @arg secret the secret to split
+      * @arg secret_len the length of the secret
+      * @arg identifier the 16 byte share identifier
+      * @arg rng the random number generator to use
+      */
+      static std::vector<RTSS_Share>
+         split(byte M, byte N,
+               const byte secret[], u16bit secret_len,
+               const byte identifier[16],
+               RandomNumberGenerator& rng);
+
+      /**
+      * @arg shares the list of shares
+      */
+      static SecureVector<byte>
+        reconstruct(const std::vector<RTSS_Share>& shares);
+
+      RTSS_Share() {}
+      RTSS_Share(const std::string&);
+
+      std::string to_string() const;
+      byte share_id() const;
+
+      u32bit size() const { return contents.size(); }
+      bool initialized() const { return contents.size(); }
+   private:
+      SecureVector<byte> contents;
+   };
+
+}
+
+#endif