Cleanups/random changes in the stream cipher code:

Remove encrypt, decrypt - replace by cipher() and cipher1()

Remove seek() - not well supported/tested, I want to redo with a new interface
once CTR and OFB modes become stream ciphers.

Rename resync to set_iv()

Remove StreamCipher::IV_LENGTH and add StreamCipher::valid_iv_length() to
allow multiple IV lengths (as for instance Turing allows, as would Salsa20
if XSalsa20 were supported).

1 files changed, 4 insertions, 1 deletions

diff --git a/src/stream/arc4/arc4.h b/src/stream/arc4/arc4.h
index aa2cea7fe..3f92fa914 100644
--- a/src/stream/arc4/arc4.h
+++ b/src/stream/arc4/arc4.h
@@ -19,13 +19,16 @@ namespace Botan {
 class BOTAN_DLL ARC4 : public StreamCipher
    {
    public:
+      void cipher(const byte in[], byte out[], u32bit length);
+
       void clear() throw();
       std::string name() const;
+
       StreamCipher* clone() const { return new ARC4(SKIP); }
+
       ARC4(u32bit = 0);
       ~ARC4() { clear(); }
    private:
-      void cipher(const byte[], byte[], u32bit);
       void key_schedule(const byte[], u32bit);
       void generate();