Move lib into src

1 files changed, 70 insertions, 0 deletions

diff --git a/src/lib/stream/stream_cipher.h b/src/lib/stream/stream_cipher.h
new file mode 100644
index 000000000..f3d3999f0
--- /dev/null
+++ b/src/lib/stream/stream_cipher.h
@@ -0,0 +1,70 @@
+/*
+* Stream Cipher
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_STREAM_CIPHER_H__
+#define BOTAN_STREAM_CIPHER_H__
+
+#include <botan/sym_algo.h>
+
+namespace Botan {
+
+/**
+* Base class for all stream ciphers
+*/
+class BOTAN_DLL StreamCipher : public SymmetricAlgorithm
+   {
+   public:
+      /**
+      * Encrypt or decrypt a message
+      * @param in the plaintext
+      * @param out the byte array to hold the output, i.e. the ciphertext
+      * @param len the length of both in and out in bytes
+      */
+      virtual void cipher(const byte in[], byte out[], size_t len) = 0;
+
+      /**
+      * Encrypt or decrypt a message
+      * @param buf the plaintext / ciphertext
+      * @param len the length of buf in bytes
+      */
+      void cipher1(byte buf[], size_t len)
+         { cipher(buf, buf, len); }
+
+      template<typename Alloc>
+         void encipher(std::vector<byte, Alloc>& inout)
+         { cipher(&inout[0], &inout[0], inout.size()); }
+
+      template<typename Alloc>
+         void encrypt(std::vector<byte, Alloc>& inout)
+         { cipher(&inout[0], &inout[0], inout.size()); }
+
+      template<typename Alloc>
+         void decrypt(std::vector<byte, Alloc>& inout)
+         { cipher(&inout[0], &inout[0], inout.size()); }
+
+      /**
+      * Resync the cipher using the IV
+      * @param iv the initialization vector
+      * @param iv_len the length of the IV in bytes
+      */
+      virtual void set_iv(const byte iv[], size_t iv_len);
+
+      /**
+      * @param iv_len the length of the IV in bytes
+      * @return if the length is valid for this algorithm
+      */
+      virtual bool valid_iv_length(size_t iv_len) const;
+
+      /**
+      * Get a new object representing the same algorithm as *this
+      */
+      virtual StreamCipher* clone() const = 0;
+   };
+
+}
+
+#endif