1: /*
2: * ntp_crypto.h - definitions for cryptographic operations
3: */
4: #ifndef NTP_CRYPTO_H
5: #define NTP_CRYPTO_H
6:
7: /*
8: * Configuration codes (also needed for parser without OPENSSL)
9: */
10: #define CRYPTO_CONF_NONE 0 /* nothing doing */
11: #define CRYPTO_CONF_PRIV 1 /* host keys file name */
12: #define CRYPTO_CONF_SIGN 2 /* signature keys file name */
13: #define CRYPTO_CONF_CERT 3 /* certificate file name */
14: #define CRYPTO_CONF_RAND 4 /* random seed file name */
15: #define CRYPTO_CONF_IFFPAR 5 /* IFF parameters file name */
16: #define CRYPTO_CONF_GQPAR 6 /* GQ parameters file name */
17: #define CRYPTO_CONF_MVPAR 7 /* MV parameters file name */
18: #define CRYPTO_CONF_PW 8 /* private key password */
19: #define CRYPTO_CONF_IDENT 9 /* specify identity scheme */
20: #define CRYPTO_CONF_NID 10 /* specify digest name */
21:
22: #ifdef OPENSSL
23: #include "openssl/evp.h"
24:
25: /*
26: * The following bits are set by the CRYPTO_ASSOC message from
27: * the server and are not modified by the client.
28: */
29: #define CRYPTO_FLAG_ENAB 0x0001 /* crypto enable */
30: #define CRYPTO_FLAG_TAI 0x0002 /* leapseconds table */
31:
32: #define CRYPTO_FLAG_PRIV 0x0010 /* PC identity scheme */
33: #define CRYPTO_FLAG_IFF 0x0020 /* IFF identity scheme */
34: #define CRYPTO_FLAG_GQ 0x0040 /* GQ identity scheme */
35: #define CRYPTO_FLAG_MV 0x0080 /* MV identity scheme */
36: #define CRYPTO_FLAG_MASK 0x00f0 /* identity scheme mask */
37:
38: /*
39: * The following bits are used by the client during the protocol
40: * exchange.
41: */
42: #define CRYPTO_FLAG_CERT 0x0100 /* public key verified */
43: #define CRYPTO_FLAG_VRFY 0x0200 /* identity verified */
44: #define CRYPTO_FLAG_PROV 0x0400 /* signature verified */
45: #define CRYPTO_FLAG_COOK 0x0800 /* cookie verifed */
46: #define CRYPTO_FLAG_AUTO 0x1000 /* autokey verified */
47: #define CRYPTO_FLAG_SIGN 0x2000 /* certificate signed */
48: #define CRYPTO_FLAG_LEAP 0x4000 /* leapsecond values verified */
49: #define CRYPTO_FLAG_ALL 0x7f00 /* all mask */
50:
51: /*
52: * Flags used for certificate management
53: */
54: #define CERT_TRUST 0x01 /* certificate is trusted */
55: #define CERT_SIGN 0x02 /* certificate is signed */
56: #define CERT_VALID 0x04 /* certificate is valid */
57: #define CERT_PRIV 0x08 /* certificate is private */
58: #define CERT_ERROR 0x80 /* certificate has errors */
59:
60: /*
61: * Extension field definitions
62: */
63: #define CRYPTO_MAXLEN 1024 /* max extension field length */
64: #define CRYPTO_VN 2 /* current protocol version number */
65: #define CRYPTO_CMD(x) (((CRYPTO_VN << 8) | (x)) << 16)
66: #define CRYPTO_NULL CRYPTO_CMD(0) /* no operation */
67: #define CRYPTO_ASSOC CRYPTO_CMD(1) /* association */
68: #define CRYPTO_CERT CRYPTO_CMD(2) /* certificate */
69: #define CRYPTO_COOK CRYPTO_CMD(3) /* cookie value */
70: #define CRYPTO_AUTO CRYPTO_CMD(4) /* autokey values */
71: #define CRYPTO_LEAP CRYPTO_CMD(5) /* leapsecond values */
72: #define CRYPTO_SIGN CRYPTO_CMD(6) /* certificate sign */
73: #define CRYPTO_IFF CRYPTO_CMD(7) /* IFF identity scheme */
74: #define CRYPTO_GQ CRYPTO_CMD(8) /* GQ identity scheme */
75: #define CRYPTO_MV CRYPTO_CMD(9) /* MV identity scheme */
76: #define CRYPTO_RESP 0x80000000 /* response */
77: #define CRYPTO_ERROR 0x40000000 /* error */
78:
79: /*
80: * Autokey event codes
81: */
82: #define XEVNT_CMD(x) (CRPT_EVENT | (x))
83: #define XEVNT_OK XEVNT_CMD(0) /* success */
84: #define XEVNT_LEN XEVNT_CMD(1) /* bad field format or length */
85: #define XEVNT_TSP XEVNT_CMD(2) /* bad timestamp */
86: #define XEVNT_FSP XEVNT_CMD(3) /* bad filestamp */
87: #define XEVNT_PUB XEVNT_CMD(4) /* bad or missing public key */
88: #define XEVNT_MD XEVNT_CMD(5) /* unsupported digest type */
89: #define XEVNT_KEY XEVNT_CMD(6) /* unsupported identity type */
90: #define XEVNT_SGL XEVNT_CMD(7) /* bad signature length */
91: #define XEVNT_SIG XEVNT_CMD(8) /* signature not verified */
92: #define XEVNT_VFY XEVNT_CMD(9) /* certificate not verified */
93: #define XEVNT_PER XEVNT_CMD(10) /* host certificate expired */
94: #define XEVNT_CKY XEVNT_CMD(11) /* bad or missing cookie */
95: #define XEVNT_DAT XEVNT_CMD(12) /* bad or missing leapseconds */
96: #define XEVNT_CRT XEVNT_CMD(13) /* bad or missing certificate */
97: #define XEVNT_ID XEVNT_CMD(14) /* bad or missing group key */
98: #define XEVNT_ERR XEVNT_CMD(15) /* protocol error */
99:
100: /*
101: * Miscellaneous crypto stuff
102: */
103: #define NTP_MAXSESSION 100 /* maximum session key list entries */
104: #define NTP_MAXEXTEN 2048 /* maximum extension field size */
105: #define NTP_AUTOMAX 12 /* default key list timeout (log2 s) */
106: #define KEY_REVOKE 17 /* default key revoke timeout (log2 s) */
107: #define NTP_REFRESH 19 /* default restart timeout (log2 s) */
108: #define NTP_MAXKEY 65535 /* maximum symmetric key ID */
109:
110: /*
111: * The autokey structure holds the values used to authenticate key IDs.
112: */
113: struct autokey { /* network byte order */
114: keyid_t key; /* key ID */
115: int32 seq; /* key number */
116: };
117:
118: /*
119: * The value structure holds variable length data such as public
120: * key, agreement parameters, public valule and leapsecond table.
121: * They are in network byte order.
122: */
123: struct value { /* network byte order */
124: tstamp_t tstamp; /* timestamp */
125: tstamp_t fstamp; /* filestamp */
126: u_int32 vallen; /* value length */
127: u_char *ptr; /* data pointer (various) */
128: u_int32 siglen; /* signature length */
129: u_char *sig; /* signature */
130: };
131:
132: /*
133: * The packet extension field structures are used to hold values
134: * and signatures in network byte order.
135: */
136: struct exten {
137: u_int32 opcode; /* opcode */
138: u_int32 associd; /* association ID */
139: u_int32 tstamp; /* timestamp */
140: u_int32 fstamp; /* filestamp */
141: u_int32 vallen; /* value length */
142: u_int32 pkt[1]; /* start of value field */
143: };
144:
145: /*
146: * The certificate info/value structure
147: */
148: struct cert_info {
149: struct cert_info *link; /* forward link */
150: u_int flags; /* flags that wave */
151: EVP_PKEY *pkey; /* generic key */
152: long version; /* X509 version */
153: int nid; /* signature/digest ID */
154: const EVP_MD *digest; /* message digest algorithm */
155: u_long serial; /* serial number */
156: tstamp_t first; /* not valid before */
157: tstamp_t last; /* not valid after */
158: char *subject; /* subject common name */
159: char *issuer; /* issuer common name */
160: BIGNUM *grpkey; /* GQ group key */
161: struct value cert; /* certificate/value */
162: };
163:
164: /*
165: * The keys info/value structure
166: */
167: struct pkey_info {
168: struct pkey_info *link; /* forward link */
169: EVP_PKEY *pkey; /* generic key */
170: char *name; /* file name */
171: tstamp_t fstamp; /* filestamp */
172: };
173:
174: /*
175: * Cryptographic values
176: */
177: extern u_int crypto_flags; /* status word */
178: extern int crypto_nid; /* digest nid */
179: extern struct value hostval; /* host name/value */
180: extern struct cert_info *cinfo; /* host certificate information */
181: extern struct value tai_leap; /* leapseconds table */
182: #endif /* OPENSSL */
183: #endif /* NTP_CRYPTO_H */
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