8 #include <botan/prf_tls.h> 9 #include <botan/internal/xor_buf.h> 10 #include <botan/hmac.h> 11 #include <botan/md5.h> 12 #include <botan/sha160.h> 21 void P_hash(MemoryRegion<byte>& output,
22 MessageAuthenticationCode* mac,
23 const byte secret[],
size_t secret_len,
24 const byte seed[],
size_t seed_len)
26 mac->
set_key(secret, secret_len);
28 SecureVector<byte> A(seed, seed_len);
32 while(offset != output.size())
34 const size_t this_block_len =
35 std::min<size_t>(mac->
output_length(), output.size() - offset);
40 mac->
update(seed, seed_len);
41 SecureVector<byte> block = mac->
final();
43 xor_buf(&output[offset], &block[0], this_block_len);
44 offset += this_block_len;
69 const byte secret[],
size_t secret_len,
70 const byte seed[],
size_t seed_len)
const 74 size_t S1_len = (secret_len + 1) / 2,
75 S2_len = (secret_len + 1) / 2;
76 const byte* S1 = secret;
77 const byte* S2 = secret + (secret_len - S2_len);
79 P_hash(output, hmac_md5, S1, S1_len, seed, seed_len);
80 P_hash(output, hmac_sha1, S2, S2_len, seed, seed_len);
98 const byte secret[],
size_t secret_len,
99 const byte seed[],
size_t seed_len)
const 103 P_hash(output, hmac, secret, secret_len, seed, seed_len);
SecureVector< byte > derive(size_t key_len, const byte secret[], size_t secret_len, const byte seed[], size_t seed_len) const
void set_key(const SymmetricKey &key)
SecureVector< byte > derive(size_t key_len, const byte secret[], size_t secret_len, const byte seed[], size_t seed_len) const
void update(const byte in[], size_t length)
SecureVector< byte > process(const byte in[], size_t length)
TLS_12_PRF(MessageAuthenticationCode *hmac)
void xor_buf(byte out[], const byte in[], size_t length)
virtual size_t output_length() const =0