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Diffstat (limited to 'src/modes/aead/eax/eax.h')
-rw-r--r-- | src/modes/aead/eax/eax.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/src/modes/aead/eax/eax.h b/src/modes/aead/eax/eax.h deleted file mode 100644 index 224fb5298..000000000 --- a/src/modes/aead/eax/eax.h +++ /dev/null @@ -1,114 +0,0 @@ -/* -* EAX Mode -* (C) 1999-2007,2013 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#ifndef BOTAN_AEAD_EAX_H__ -#define BOTAN_AEAD_EAX_H__ - -#include <botan/aead.h> -#include <botan/block_cipher.h> -#include <botan/stream_cipher.h> -#include <botan/mac.h> -#include <memory> - -namespace Botan { - -/** -* EAX base class -*/ -class BOTAN_DLL EAX_Mode : public AEAD_Mode - { - public: - secure_vector<byte> start(const byte nonce[], size_t nonce_len) override; - - void set_associated_data(const byte ad[], size_t ad_len) override; - - std::string name() const override; - - size_t update_granularity() const; - - Key_Length_Specification key_spec() const override; - - // EAX supports arbitrary nonce lengths - bool valid_nonce_length(size_t) const override { return true; } - - size_t tag_size() const { return m_tag_size; } - - void clear(); - protected: - void key_schedule(const byte key[], size_t length) override; - - /** - * @param cipher the cipher to use - * @param tag_size is how big the auth tag will be - */ - EAX_Mode(BlockCipher* cipher, size_t tag_size); - - size_t block_size() const { return m_cipher->block_size(); } - - size_t m_tag_size; - - std::unique_ptr<BlockCipher> m_cipher; - std::unique_ptr<StreamCipher> m_ctr; - std::unique_ptr<MessageAuthenticationCode> m_cmac; - - secure_vector<byte> m_ad_mac; - - secure_vector<byte> m_nonce_mac; - }; - -/** -* EAX Encryption -*/ -class BOTAN_DLL EAX_Encryption : public EAX_Mode - { - public: - /** - * @param cipher a 128-bit block cipher - * @param tag_size is how big the auth tag will be - */ - EAX_Encryption(BlockCipher* cipher, size_t tag_size = 0) : - EAX_Mode(cipher, tag_size) {} - - size_t output_length(size_t input_length) const override - { return input_length + tag_size(); } - - size_t minimum_final_size() const override { return 0; } - - void update(secure_vector<byte>& blocks, size_t offset = 0) override; - - void finish(secure_vector<byte>& final_block, size_t offset = 0) override; - }; - -/** -* EAX Decryption -*/ -class BOTAN_DLL EAX_Decryption : public EAX_Mode - { - public: - /** - * @param cipher a 128-bit block cipher - * @param tag_size is how big the auth tag will be - */ - EAX_Decryption(BlockCipher* cipher, size_t tag_size = 0) : - EAX_Mode(cipher, tag_size) {} - - size_t output_length(size_t input_length) const override - { - BOTAN_ASSERT(input_length > tag_size(), "Sufficient input"); - return input_length - tag_size(); - } - - size_t minimum_final_size() const override { return tag_size(); } - - void update(secure_vector<byte>& blocks, size_t offset = 0) override; - - void finish(secure_vector<byte>& final_block, size_t offset = 0) override; - }; - -} - -#endif |