Botan 2.19.3
Crypto and TLS for C&
salsa20.h
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1/*
2* Salsa20 / XSalsa20
3* (C) 1999-2010 Jack Lloyd
4*
5* Botan is released under the Simplified BSD License (see license.txt)
6*/
7
8#ifndef BOTAN_SALSA20_H_
9#define BOTAN_SALSA20_H_
10
11#include <botan/stream_cipher.h>
12
14
15namespace Botan {
16
17/**
18* DJB's Salsa20 (and XSalsa20)
19*/
21 {
22 public:
23 void cipher(const uint8_t in[], uint8_t out[], size_t length) override;
24
25 void set_iv(const uint8_t iv[], size_t iv_len) override;
26
27 bool valid_iv_length(size_t iv_len) const override;
28
29 size_t default_iv_length() const override;
30
31 Key_Length_Specification key_spec() const override;
32
33 void clear() override;
34 std::string name() const override;
35 StreamCipher* clone() const override;
36
37 static void salsa_core(uint8_t output[64], const uint32_t input[16], size_t rounds);
38 static void hsalsa20(uint32_t output[8], const uint32_t input[16]);
39
40 void seek(uint64_t offset) override;
41 private:
42 void key_schedule(const uint8_t key[], size_t key_len) override;
43
44 void initialize_state();
45
49 size_t m_position = 0;
50 };
51
52}
53
54#endif
virtual void cipher(const uint8_t in[], uint8_t out[], size_t len)=0
virtual size_t default_iv_length() const
virtual StreamCipher * clone() const =0
virtual void set_iv(const uint8_t iv[], size_t iv_len)=0
virtual void seek(uint64_t offset)=0
virtual bool valid_iv_length(size_t iv_len) const
virtual std::string name() const =0
virtual void clear()=0
virtual Key_Length_Specification key_spec() const =0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition compiler.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition compiler.h:136
std::vector< T, secure_allocator< T > > secure_vector
Definition secmem.h:65