Botan 3.3.0
Crypto and TLS for C&
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
13namespace Botan {
14
15/**
16* Serpent is the most conservative of the AES finalists
17* https://www.cl.cam.ac.uk/~rja14/serpent.html
18*/
19class Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8> {
20 public:
21 void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
22 void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override;
23
24 void clear() override;
25 std::string provider() const override;
26
27 std::string name() const override { return "Serpent"; }
28
29 std::unique_ptr<BlockCipher> new_object() const override { return std::make_unique<Serpent>(); }
30
31 size_t parallelism() const override { return 4; }
32
33 bool has_keying_material() const override;
34
35 private:
36#if defined(BOTAN_HAS_SERPENT_SIMD)
37 void simd_encrypt_4(const uint8_t in[16 * 4], uint8_t out[16 * 4]) const;
38 void simd_decrypt_4(const uint8_t in[16 * 4], uint8_t out[16 * 4]) const;
39#endif
40
41#if defined(BOTAN_HAS_SERPENT_AVX2)
42 void avx2_encrypt_8(const uint8_t in[16 * 8], uint8_t out[16 * 8]) const;
43 void avx2_decrypt_8(const uint8_t in[16 * 8], uint8_t out[16 * 8]) const;
44#endif
45
46#if defined(BOTAN_HAS_SERPENT_AVX512)
47 void avx512_encrypt_16(const uint8_t in[16 * 16], uint8_t out[16 * 16]) const;
48 void avx512_decrypt_16(const uint8_t in[16 * 16], uint8_t out[16 * 16]) const;
49#endif
50
51 void key_schedule(std::span<const uint8_t> key) override;
52
53 secure_vector<uint32_t> m_round_key;
54};
55
56} // namespace Botan
57
58#endif
bool has_keying_material() const override
Definition serpent.cpp:316
std::string provider() const override
Definition serpent.cpp:388
std::string name() const override
Definition serpent.h:27
void clear() override
Definition serpent.cpp:384
size_t parallelism() const override
Definition serpent.h:31
std::unique_ptr< BlockCipher > new_object() const override
Definition serpent.h:29
void encrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override
Definition serpent.cpp:23
void decrypt_n(const uint8_t in[], uint8_t out[], size_t blocks) const override
Definition serpent.cpp:171
int(* final)(unsigned char *, CTX *)
std::vector< T, secure_allocator< T > > secure_vector
Definition secmem.h:61