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| 24 | #include <time.h> |
24 | #include <time.h> |
| 25 | |
25 | |
| 26 | |
26 | |
| 27 | #define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 |
27 | #define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 |
| 28 | #define RSA_KEYLEN ((RSA_KEYBITS) >> 3) |
28 | #define RSA_KEYLEN ((RSA_KEYBITS) >> 3) |
| 29 | #define RSA_OVERHEAD (41 + 1) // well, no define for OAEP |
29 | #define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl |
| 30 | |
30 | |
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31 | #define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( |
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32 | #define RSA_HASHLEN (160 >> 3) |
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33 | |
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34 | #define RSA_IDLEN 16 // how many bytes are used to identify the challenge |
| 31 | #define CHALLENGE_TTL 30 // challenge bytes timeout after n seconds |
35 | #define RSA_TTL 20 // challenge bytes timeout after n seconds |
| 32 | |
36 | |
| 33 | #define CIPHER ENABLE_CIPHER () |
37 | #define CIPHER ENABLE_CIPHER () |
| 34 | #define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) |
38 | #define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) |
| 35 | #define DIGEST ENABLE_DIGEST () |
39 | #define DIGEST ENABLE_DIGEST () |
| 36 | #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) |
40 | #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) |
| 37 | |
41 | |
| 38 | #define MAX_SEQNO 0xfffff000U |
42 | #define MAX_SEQNO 0xfffffff0U |
| 39 | |
43 | |
| 40 | #define CHG_SEQNO 0 // where the seqno starts within the rsa challenge |
44 | #define CHG_SEQNO 0 // where the seqno starts within the rsa challenge |
| 41 | #define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge |
45 | #define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge |
| 42 | #define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) |
46 | #define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) |
| 43 | |
47 | |
| 44 | // hdr seq len hmac MAC MAC |
48 | // hdr seq len hmac MAC MAC |
| 45 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
49 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
| 46 | #define UDP_OVERHEAD 40 // size of a (normal) ip + udp header |
50 | #define IP_OVERHEAD 20 // size of a (normal) ip header |
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51 | #define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header |
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52 | #define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol |
| 47 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
53 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
| 48 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares |
54 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares |
| 49 | |
55 | |
| 50 | #define PKTCACHESIZE 4 // the size of the memory pool for packets |
56 | #define PKTCACHESIZE 4 // the size of the memory pool for packets |
| 51 | |
57 | |
