Botan 2.1.0 Crypto and TLS for C++11

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serpent.h
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1 /*
2 * Serpent
3 * (C) 1999-2007 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7
8 #ifndef BOTAN_SERPENT_H__
9 #define BOTAN_SERPENT_H__
10
11 #include <botan/block_cipher.h>
12
13 namespace Botan {
14
15 /**
16 * Serpent is the most conservative of the AES finalists
17 * http://www.cl.cam.ac.uk/~rja14/serpent.html
18 */
19 class BOTAN_DLL Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
20 {
21 public:
22 void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
23 void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
24
25 void clear() override;
26 std::string provider() const override;
27 std::string name() const override { return "Serpent"; }
28 BlockCipher* clone() const override { return new Serpent; }
29
30 size_t parallelism() const override { return 4; }
31
32 protected:
33 #if defined(BOTAN_HAS_SERPENT_SIMD)
34 /**
35 * Encrypt 4 blocks in parallel using SSE2 or AltiVec
36 */
37 void simd_encrypt_4(const uint8_t in[64], uint8_t out[64]) const;
38
39 /**
40 * Decrypt 4 blocks in parallel using SSE2 or AltiVec
41 */
42 void simd_decrypt_4(const uint8_t in[64], uint8_t out[64]) const;
43 #endif
44
45 /**
46 * For use by subclasses using SIMD, asm, etc
47 * @return const reference to the key schedule
48 */
49 const secure_vector<uint32_t>& get_round_keys() const
50 { return m_round_key; }
51
52 /**
53 * For use by subclasses that implement the key schedule
54 * @param ks is the new key schedule value to set
55 */
56 void set_round_keys(const uint32_t ks[132])
57 {
58 m_round_key.assign(&ks[0], &ks[132]);
59 }
60
61 private:
62 void key_schedule(const uint8_t key[], size_t length) override;
63 secure_vector<uint32_t> m_round_key;
64 };
65
66 }
67
68 #endif
Botan::Serpent::name
std::string name() const override
Definition: serpent.h:27
Botan::Serpent::clone
BlockCipher * clone() const override
Definition: serpent.h:28
Botan::Serpent::set_round_keys
void set_round_keys(const uint32_t ks[132])
Definition: serpent.h:56
Botan::Serpent
Definition: serpent.h:19
Botan::secure_vector
std::vector< T, secure_allocator< T >> secure_vector
Definition: secmem.h:121
Botan::Serpent::parallelism
size_t parallelism() const override
Definition: serpent.h:30
Botan
Definition: alg_id.cpp:13
Botan::Block_Cipher_Fixed_Params
Definition: block_cipher.h:183
Botan::Serpent::get_round_keys
const secure_vector< uint32_t > & get_round_keys() const
Definition: serpent.h:49
Botan::BlockCipher
Definition: block_cipher.h:19