release/src/router/dnscrypt/src/proxy/dnscrypt.h

   1
   2 #ifndef __DNSCRYPT_H__
   3 #define __DNSCRYPT_H__ 1
   4
   5 #include <sys/types.h>
   6 #include <stdint.h>
   7
   8 #include "crypto_box.h"
   9
  10 #define DNSCRYPT_MAGIC_QUERY_LEN 8U
  11 #define DNSCRYPT_MAGIC_RESPONSE  "r6fnvWj8"
  12
  13 #ifndef DNSCRYPT_MAX_PADDING
  14 # define DNSCRYPT_MAX_PADDING 256U
  15 #endif
  16 #ifndef DNSCRYPT_BLOCK_SIZE
  17 # define DNSCRYPT_BLOCK_SIZE 64U
  18 #endif
  19 #ifndef DNSCRYPT_MIN_PAD_LEN
  20 # define DNSCRYPT_MIN_PAD_LEN 8U
  21 #endif
  22 #define crypto_box_MACBYTES (crypto_box_ZEROBYTES - crypto_box_BOXZEROBYTES)
  23 #define crypto_box_HALF_NONCEBYTES (crypto_box_NONCEBYTES / 2U)
  24
  25 size_t dnscrypt_response_header_size(void);
  26 size_t dnscrypt_query_header_size(void);
  27
  28 int dnscrypt_cmp_client_nonce(const uint8_t
  29                               client_nonce[crypto_box_HALF_NONCEBYTES],
  30                               const uint8_t * const buf, const size_t len);
  31
  32 size_t dnscrypt_pad(uint8_t *buf, const size_t len, const size_t max_len);
  33
  34 void dnscrypt_key_to_fingerprint(char fingerprint[80U],
  35                                  const uint8_t * const key);
  36
  37 int dnscrypt_fingerprint_to_key(const char * const fingerprint,
  38                                 uint8_t key[crypto_box_PUBLICKEYBYTES]);
  39
  40 #endif