lsquic_crypto.h revision 50aadb33 
1/* Copyright (c) 2017 LiteSpeed Technologies Inc.  See LICENSE. */
2
3#ifndef __LSQUIC_CRYPTO_H__
4#define __LSQUIC_CRYPTO_H__
5
6#include <stdint.h>
7
8#define HS_PKT_HASH_LENGTH 12
9
10
11#ifdef __cplusplus
12extern "C" {
13#endif
14
15struct lsquic_str;
16
17#if defined( __x86_64 )||defined( __x86_64__ )
18    typedef __uint128_t uint128;
19#else
20    typedef struct uint128_st
21    {
22        uint64_t hi_;
23        uint64_t lo_;
24    } uint128;
25#endif
26
27
28void crypto_init();
29
30/* XXX: why have a wrapper around RAND_bytes? */
31void rand_bytes(void *data, int len);
32
33
34int export_key_material_simple(unsigned char *ikm, uint32_t ikm_len,
35                        unsigned char *salt, int salt_len,
36                        char *label, uint32_t label_len,
37                        const uint8_t *context, uint32_t context_len,
38                        uint8_t *key, uint16_t key_len);
39
40int export_key_material(const unsigned char *ikm, uint32_t ikm_len,
41                        const unsigned char *salt, int salt_len,
42                        const unsigned char *context, uint32_t context_len,
43                        uint16_t c_key_len, uint8_t *c_key,
44                        uint16_t s_key_len, uint8_t *s_key,
45                        uint16_t c_key_iv_len, uint8_t *c_key_iv,
46                        uint16_t s_key_iv_len, uint8_t *s_key_iv,
47                        uint8_t *sub_key);
48
49void c255_get_pub_key(unsigned char *priv_key, unsigned char pub_key[32]);
50int c255_gen_share_key(unsigned char *priv_key, unsigned char *peer_pub_key, unsigned char *shared_key);
51
52
53
54uint64_t fnv1a_64(const uint8_t * data, int len);
55void fnv1a_64_s(const uint8_t * data, int len, char *md);
56uint128 fnv1a_128(const uint8_t * data, int len);
57void fnv1a_128_s(const uint8_t * data , int len, uint8_t  *md);
58uint128 fnv1a_128_2(const uint8_t * data1, int len1, const uint8_t * data2, int len2);
59uint128 fnv1a_128_3(const uint8_t * data1, int len1,
60                      const uint8_t * data2, int len2,
61                      const uint8_t * data3, int len3);
62void fnv1a_128_2_s(const uint8_t * data1, int len1, const uint8_t * data2, int len2, uint8_t  *md);
63void serialize_fnv128_short(uint128 v, uint8_t *md);
64
65
66/* before session handshake complete */
67int verify_hs_pkt(const uint8_t *pkg_data, size_t header_len, size_t pkg_len);
68int update_hs_pkt_hash(uint8_t *pkg_data, int header_len, int pkg_len);
69int get_hs_pkt_hash_len();
70
71
72/*16 bytes of h outputted  */
73void sha256(const uint8_t *buf, int len, uint8_t *h);
74
75
76/* Encrypt plaint text to cipher test */
77int aes_aead_enc(EVP_AEAD_CTX *key,
78              const uint8_t *ad, size_t ad_len,
79              const uint8_t *nonce, size_t nonce_len,
80              const uint8_t *plain, size_t plain_len,
81              uint8_t *cypher, size_t *cypher_len);
82
83int aes_aead_dec(EVP_AEAD_CTX *key,
84              const uint8_t *ad, size_t ad_len,
85              const uint8_t *nonce, size_t nonce_len,
86              const uint8_t *cypher, size_t cypher_len,
87              uint8_t *plain, size_t *plain_len);
88
89int aes_get_key_length();
90
91void gen_nonce_s(char *buf, int length);
92
93/* 32 bytes client nonce with 4 bytes tm, 8 bytes orbit */
94void gen_nonce_c(unsigned char *buf, uint64_t orbit);
95
96EVP_PKEY *PEM_to_key(const char *buf, int len);
97
98X509 *bio_to_crt(const void *buf, int len, int type);
99
100int lshkdf_expand(const unsigned char *prk, const unsigned char *info, int info_len,
101                uint16_t c_key_len, uint8_t *c_key,
102                uint16_t s_key_len, uint8_t *s_key,
103                uint16_t c_key_iv_len, uint8_t *c_key_iv,
104                uint16_t s_key_iv_len, uint8_t *s_key_iv,
105                uint16_t sub_key_len, uint8_t *sub_key);
106void lshkdf_extract(const unsigned char *ikm, int ikm_len, const unsigned char *salt,
107                  int salt_len, unsigned char *prk);
108
109int gen_prof(const uint8_t *chlo_data, size_t chlo_data_len,
110             const uint8_t *scfg_data, uint32_t scfg_data_len,
111             const EVP_PKEY *priv_key, uint8_t *buf, size_t *len);
112int verify_prof0(const uint8_t *chlo_data, size_t chlo_data_len,
113                const uint8_t *scfg_data, uint32_t scfg_data_len,
114                const EVP_PKEY *pub_key, const uint8_t *buf, size_t len);
115
116int verify_prof(const uint8_t *chlo_data, size_t chlo_data_len, struct lsquic_str * scfg,
117                const EVP_PKEY *pub_key, const uint8_t *buf, size_t len);
118
119
120#ifdef __cplusplus
121}
122#endif
123
124#endif //__LSQUIC_CRYPTO_H__
125