lsquic_hkdf.h revision 26e8f082 
1/* Copyright (c) 2017 - 2021 LiteSpeed Technologies Inc.  See LICENSE. */
2#ifndef LSQUIC_HKDF_H
3#define LSQUIC_HKDF_H 1
4
5/* [draft-ietf-quic-tls-23] Section 5.2 */
6#define HSK_SALT_BUF "\xc3\xee\xf7\x12\xc7\x2e\xbb\x5a\x11\xa7" \
7                     "\xd2\x43\x2b\xb4\x63\x65\xbe\xf9\xf5\x02"
8#define HSK_SALT_PRE29 ((unsigned char *) HSK_SALT_BUF)
9/* [draft-ietf-quic-tls-29] Section 5.2 */
10#define HSK_SALT_PRE33 ((unsigned char *) \
11                     "\xaf\xbf\xec\x28\x99\x93\xd2\x4c\x9e\x97" \
12                     "\x86\xf1\x9c\x61\x11\xe0\x43\x90\xa8\x99")
13/* [draft-ietf-quic-tls-33] Section 5.2 */
14#define HSK_SALT ((unsigned char *) \
15                     "\x38\x76\x2c\xf7\xf5\x59\x34\xb3\x4d\x17" \
16                     "\x9a\xe6\xa4\xc8\x0c\xad\xcc\xbb\x7f\x0a")
17#define HSK_SALT_SZ (sizeof(HSK_SALT_BUF) - 1)
18
19#define CLIENT_LABEL "client in"
20#define CLIENT_LABEL_SZ (sizeof(CLIENT_LABEL) - 1)
21#define SERVER_LABEL "server in"
22#define SERVER_LABEL_SZ (sizeof(SERVER_LABEL) - 1)
23
24void
25lsquic_qhkdf_expand (const struct env_md_st *, const unsigned char *secret,
26            unsigned secret_len, const char *label, uint8_t label_len,
27            unsigned char *out, uint16_t out_len);
28
29#endif
30