1 files changed, 109 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/filters/key_filt.h b/src/libs/3rdparty/botan/src/lib/filters/key_filt.h
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index 0000000000..67b689f998
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+++ b/src/libs/3rdparty/botan/src/lib/filters/key_filt.h
@@ -0,0 +1,109 @@
+/*
+* Keyed_Filter
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_KEYED_FILTER_H_
+#define BOTAN_KEYED_FILTER_H_
+
+#include <botan/symkey.h>
+#include <botan/filter.h>
+#include <botan/cipher_mode.h>
+
+namespace Botan {
+
+/**
+* This class represents keyed filters, i.e. filters that have to be
+* fed with a key in order to function.
+*/
+class BOTAN_PUBLIC_API(2,0) Keyed_Filter : public Filter
+   {
+   public:
+      /**
+      * Set the key of this filter
+      * @param key the key to use
+      */
+      virtual void set_key(const SymmetricKey& key) = 0;
+
+      /**
+      * Set the initialization vector of this filter. Note: you should
+      * call set_iv() only after you have called set_key()
+      * @param iv the initialization vector to use
+      */
+      virtual void set_iv(const InitializationVector& iv);
+
+      /**
+      * Check whether a key length is valid for this filter
+      * @param length the key length to be checked for validity
+      * @return true if the key length is valid, false otherwise
+      */
+      bool valid_keylength(size_t length) const
+         {
+         return key_spec().valid_keylength(length);
+         }
+
+      /**
+      * @return object describing limits on key size
+      */
+      virtual Key_Length_Specification key_spec() const = 0;
+
+      /**
+      * Check whether an IV length is valid for this filter
+      * @param length the IV length to be checked for validity
+      * @return true if the IV length is valid, false otherwise
+      */
+      virtual bool valid_iv_length(size_t length) const
+         { return (length == 0); }
+   };
+
+
+
+/*
+* Get a cipher object
+*/
+
+/**
+* Factory method for general symmetric cipher filters.
+* @param algo_spec the name of the desired cipher
+* @param key the key to be used for encryption/decryption performed by
+* the filter
+* @param iv the initialization vector to be used
+* @param direction determines whether the filter will be an encrypting
+* or decrypting filter
+* @return pointer to newly allocated encryption or decryption filter
+*/
+BOTAN_PUBLIC_API(2,0) Keyed_Filter* get_cipher(const std::string& algo_spec,
+                                   const SymmetricKey& key,
+                                   const InitializationVector& iv,
+                                   Cipher_Dir direction);
+
+/**
+* Factory method for general symmetric cipher filters.
+* @param algo_spec the name of the desired cipher
+* @param key the key to be used for encryption/decryption performed by
+* the filter
+* @param direction determines whether the filter will be an encrypting
+* or decrypting filter
+* @return pointer to the encryption or decryption filter
+*/
+BOTAN_PUBLIC_API(2,0) Keyed_Filter* get_cipher(const std::string& algo_spec,
+                                   const SymmetricKey& key,
+                                   Cipher_Dir direction);
+
+/**
+* Factory method for general symmetric cipher filters. No key will be
+* set in the filter.
+*
+* @param algo_spec the name of the desired cipher
+* @param direction determines whether the filter will be an encrypting or
+* decrypting filter
+* @return pointer to the encryption or decryption filter
+*/
+BOTAN_PUBLIC_API(2,0) Keyed_Filter* get_cipher(const std::string& algo_spec,
+                                   Cipher_Dir direction);
+
+}
+
+#endif