9#include <botan/internal/prf_tls.h>
11#include <botan/exceptn.h>
12#include <botan/internal/fmt.h>
13#include <botan/internal/stl_util.h>
20void TLS_12_PRF::perform_kdf(std::span<uint8_t> key,
21 std::span<const uint8_t> secret,
22 std::span<const uint8_t> salt,
23 std::span<const uint8_t> label)
const {
25 m_mac->set_key(secret);
26 }
catch(Invalid_Key_Length&) {
27 throw Internal_Error(
fmt(
"The premaster secret of {} bytes is too long for TLS-PRF", secret.size()));
35 A = m_mac->process(A);
42 const size_t writing = std::min(h.size(), o.remaining_capacity());
43 xor_buf(o.next(writing), std::span{h}.first(writing));
48 return fmt(
"TLS-12-PRF({})", m_mac->name());
52 return std::make_unique<TLS_12_PRF>(m_mac->new_object());
std::unique_ptr< KDF > new_object() const override
std::string name() const override
std::string fmt(std::string_view format, const T &... args)
constexpr auto concat(Rs &&... ranges)
constexpr void xor_buf(ranges::contiguous_output_range< uint8_t > auto &&out, ranges::contiguous_range< uint8_t > auto &&in)
std::vector< T, secure_allocator< T > > secure_vector