sel.h (1670B)
1 #pragma once
2
3 #include "sodium.h"
4
5 #ifndef u8
6 #define u8 uint8_t
7 #endif
8
9 typedef struct {
10 u8 publicKey[crypto_box_PUBLICKEYBYTES];
11 u8 secretKey[crypto_box_SECRETKEYBYTES];
12 u8 remotePublicKey[crypto_box_PUBLICKEYBYTES];
13 u8 nonce[crypto_box_NONCEBYTES];
14 } keyst;
15
16 typedef struct {
17 u8 rx[crypto_kx_SESSIONKEYBYTES];
18 u8 tx[crypto_kx_SESSIONKEYBYTES];
19 u8 nonce[crypto_box_NONCEBYTES];
20 } sessionKeyst;
21
22 #define CLIENT_SESSION_KEYS 0
23 #define SERVER_SESSION_KEYS 1
24
25 typedef struct {
26 u8 publicKey[crypto_sign_PUBLICKEYBYTES];
27 u8 secretKey[crypto_sign_SECRETKEYBYTES];
28 } signKeyst;
29
30 extern signKeyst identityKeys;
31 extern u8 remoteId[crypto_sign_PUBLICKEYBYTES];
32 extern sessionKeyst sessionKeys;
33 extern keyst keys;
34 /*
35 These functions return 0 when they fail.
36 */
37
38 int selInit(void);
39 void newKeys(void);
40 void newKeysBuf(keyst *keys);
41 void newSignKeys(void);
42 void newSignKeysBuf(signKeyst *keys);
43 int selPublicEncrypt(u8 *ciphertext/*result*/, size_t csize, const u8 *msg, size_t mlen, keyst *keys);
44 int selPublicDecrypt(u8 *msg/*result*/, size_t msize, const u8 *ciphertext, size_t clen, keyst *keys);
45 int computeSharedKeys(int clientOrServer);
46 int computeSharedKeysBuf(int clientOrServer, sessionKeyst *sessionKeys, keyst *clientKeys);
47 // secret/symetric key encryption
48 int selEncrypt(u8 *ciphertext/*result*/, size_t csize, const u8 *msg, size_t mlen);
49 int selEncryptBuf(u8 *ciphertext/*result*/, size_t csize, const u8 *msg, size_t mlen, const u8 *nonce, const u8 *k);
50 int selDecrypt(u8 *msg/*result*/, size_t msize, const u8 *ciphertext, size_t clen);
51 int selDecryptBuf(u8 *msg/*result*/, size_t msize, const u8 *ciphertext, size_t clen, const u8 *nonce, const u8 *k);