11#include <botan/stream_cipher.h>
28 explicit ChaCha(
size_t rounds = 20);
30 std::string
provider()
const override;
32 void cipher(
const uint8_t in[], uint8_t out[],
size_t length)
override;
36 void set_iv(
const uint8_t iv[],
size_t iv_len)
override;
50 void clear()
override;
54 std::string
name()
const override;
56 void seek(uint64_t offset)
override;
59 void key_schedule(
const uint8_t key[],
size_t key_len)
override;
61 void initialize_state();
63 void chacha_x8(uint8_t output[64*8], uint32_t state[16],
size_t rounds);
65#if defined(BOTAN_HAS_CHACHA_SIMD32)
66 void chacha_simd32_x4(uint8_t output[64*4], uint32_t state[16],
size_t rounds);
69#if defined(BOTAN_HAS_CHACHA_AVX2)
70 void chacha_avx2_x8(uint8_t output[64*8], uint32_t state[16],
size_t rounds);
77 size_t m_position = 0;
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 write_keystream(uint8_t out[], size_t len)
virtual void seek(uint64_t offset)=0
virtual bool valid_iv_length(size_t iv_len) const
virtual std::string provider() const
virtual std::string name() const =0
virtual Key_Length_Specification key_spec() const =0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
std::vector< T, secure_allocator< T > > secure_vector