diff options
Diffstat (limited to 'src/libs/3rdparty/botan/src/lib/base/sym_algo.h')
-rw-r--r-- | src/libs/3rdparty/botan/src/lib/base/sym_algo.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/base/sym_algo.h b/src/libs/3rdparty/botan/src/lib/base/sym_algo.h new file mode 100644 index 0000000000..e69d4f81eb --- /dev/null +++ b/src/libs/3rdparty/botan/src/lib/base/sym_algo.h @@ -0,0 +1,108 @@ +/* +* Symmetric Algorithm Base Class +* (C) 1999-2007 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#ifndef BOTAN_SYMMETRIC_ALGORITHM_H_ +#define BOTAN_SYMMETRIC_ALGORITHM_H_ + +#include <botan/key_spec.h> +#include <botan/symkey.h> +#include <botan/types.h> + +namespace Botan { + +/** +* This class represents a symmetric algorithm object. +*/ +class BOTAN_PUBLIC_API(2,0) SymmetricAlgorithm + { + public: + virtual ~SymmetricAlgorithm() = default; + + /** + * Reset the state. + */ + virtual void clear() = 0; + + /** + * @return object describing limits on key size + */ + virtual Key_Length_Specification key_spec() const = 0; + + /** + * @return minimum allowed key length + */ + size_t maximum_keylength() const + { + return key_spec().maximum_keylength(); + } + + /** + * @return maximum allowed key length + */ + size_t minimum_keylength() const + { + return key_spec().minimum_keylength(); + } + + /** + * Check whether a given key length is valid for this algorithm. + * @param length the key length to be checked. + * @return true if the key length is valid. + */ + bool valid_keylength(size_t length) const + { + return key_spec().valid_keylength(length); + } + + /** + * Set the symmetric key of this object. + * @param key the SymmetricKey to be set. + */ + void set_key(const SymmetricKey& key) + { + set_key(key.begin(), key.length()); + } + + template<typename Alloc> + void set_key(const std::vector<uint8_t, Alloc>& key) + { + set_key(key.data(), key.size()); + } + + /** + * Set the symmetric key of this object. + * @param key the to be set as a byte array. + * @param length in bytes of key param + */ + void set_key(const uint8_t key[], size_t length); + + /** + * @return the algorithm name + */ + virtual std::string name() const = 0; + + protected: + void verify_key_set(bool cond) const + { + if(cond == false) + throw_key_not_set_error(); + } + + private: + void throw_key_not_set_error() const; + + /** + * Run the key schedule + * @param key the key + * @param length of key + */ + virtual void key_schedule(const uint8_t key[], size_t length) = 0; + }; + +} + +#endif |