Arduino Cryptography Library
Speck.h
1 /*
2  * Copyright (C) 2015 Southern Storm Software, Pty Ltd.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included
12  * in all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20  * DEALINGS IN THE SOFTWARE.
21  */
22 
23 #ifndef CRYPTO_SPECK_H
24 #define CRYPTO_SPECK_H
25 
26 #include "BlockCipher.h"
27 
28 class Speck : public BlockCipher
29 {
30 public:
31  Speck();
32  virtual ~Speck();
33 
34  size_t blockSize() const;
35  size_t keySize() const;
36 
37  bool setKey(const uint8_t *key, size_t len);
38 
39  void encryptBlock(uint8_t *output, const uint8_t *input);
40  void decryptBlock(uint8_t *output, const uint8_t *input);
41 
42  void clear();
43 
44 private:
45  uint64_t k[34];
46  uint8_t rounds;
47 };
48 
49 #endif
Abstract base class for block ciphers.
Definition: BlockCipher.h:30
Speck block cipher with a 128-bit block size.
Definition: Speck.h:29
Speck()
Constructs a Speck block cipher with no initial key.
Definition: Speck.cpp:72
bool setKey(const uint8_t *key, size_t len)
Sets the key to use for future encryption and decryption operations.
Definition: Speck.cpp:105
void clear()
Clears all security-sensitive state from this block cipher.
Definition: Speck.cpp:550
size_t blockSize() const
Size of a single block processed by this cipher, in bytes.
Definition: Speck.cpp:82
size_t keySize() const
Default size of the key for this block cipher, in bytes.
Definition: Speck.cpp:87
void decryptBlock(uint8_t *output, const uint8_t *input)
Decrypts a single block using this cipher.
Definition: Speck.cpp:425
void encryptBlock(uint8_t *output, const uint8_t *input)
Encrypts a single block using this cipher.
Definition: Speck.cpp:303