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 AUTOKEY) 9 */ 10 #define CRYPTO_CONF_NONE 0 /* nothing doing */ 11 #define CRYPTO_CONF_PRIV 1 /* host name */ 12 #define CRYPTO_CONF_IDENT 2 /* group 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_NID 9 /* specify digest name */ 20 21 #ifdef AUTOKEY 22 #ifndef OPENSSL 23 #error AUTOKEY should be defined only if OPENSSL is. 24 invalidsyntax: AUTOKEY should be defined only if OPENSSL is. 25 #endif 26 27 #include "openssl/bn.h" 28 #include "openssl/evp.h" 29 #include "ntp_calendar.h" /* for fields in the cert_info structure */ 30 31 32 /* 33 * The following bits are set by the CRYPTO_ASSOC message from 34 * the server and are not modified by the client. 35 */ 36 #define CRYPTO_FLAG_ENAB 0x0001 /* crypto enable */ 37 #define CRYPTO_FLAG_TAI 0x0002 /* leapseconds table */ 38 39 #define CRYPTO_FLAG_PRIV 0x0010 /* PC identity scheme */ 40 #define CRYPTO_FLAG_IFF 0x0020 /* IFF identity scheme */ 41 #define CRYPTO_FLAG_GQ 0x0040 /* GQ identity scheme */ 42 #define CRYPTO_FLAG_MV 0x0080 /* MV identity scheme */ 43 #define CRYPTO_FLAG_MASK 0x00f0 /* identity scheme mask */ 44 45 /* 46 * The following bits are used by the client during the protocol 47 * exchange. 48 */ 49 #define CRYPTO_FLAG_CERT 0x0100 /* public key verified */ 50 #define CRYPTO_FLAG_VRFY 0x0200 /* identity verified */ 51 #define CRYPTO_FLAG_PROV 0x0400 /* signature verified */ 52 #define CRYPTO_FLAG_COOK 0x0800 /* cookie verifed */ 53 #define CRYPTO_FLAG_AUTO 0x1000 /* autokey verified */ 54 #define CRYPTO_FLAG_SIGN 0x2000 /* certificate signed */ 55 #define CRYPTO_FLAG_LEAP 0x4000 /* leapsecond values verified */ 56 #define CRYPTO_FLAG_ALL 0x7f00 /* all mask */ 57 58 /* 59 * Flags used for certificate management 60 */ 61 #define CERT_TRUST 0x01 /* certificate is trusted */ 62 #define CERT_SIGN 0x02 /* certificate is signed */ 63 #define CERT_VALID 0x04 /* certificate is valid */ 64 #define CERT_PRIV 0x08 /* certificate is private */ 65 #define CERT_ERROR 0x80 /* certificate has errors */ 66 67 /* 68 * Extension field definitions 69 */ 70 #define CRYPTO_MAXLEN 1024 /* max extension field length */ 71 #define CRYPTO_VN 2 /* current protocol version number */ 72 #define CRYPTO_CMD(x) (((CRYPTO_VN << 8) | (x)) << 16) 73 #define CRYPTO_NULL CRYPTO_CMD(0) /* no operation */ 74 #define CRYPTO_ASSOC CRYPTO_CMD(1) /* association */ 75 #define CRYPTO_CERT CRYPTO_CMD(2) /* certificate */ 76 #define CRYPTO_COOK CRYPTO_CMD(3) /* cookie value */ 77 #define CRYPTO_AUTO CRYPTO_CMD(4) /* autokey values */ 78 #define CRYPTO_LEAP CRYPTO_CMD(5) /* leapsecond values */ 79 #define CRYPTO_SIGN CRYPTO_CMD(6) /* certificate sign */ 80 #define CRYPTO_IFF CRYPTO_CMD(7) /* IFF identity scheme */ 81 #define CRYPTO_GQ CRYPTO_CMD(8) /* GQ identity scheme */ 82 #define CRYPTO_MV CRYPTO_CMD(9) /* MV identity scheme */ 83 #define CRYPTO_RESP 0x80000000 /* response */ 84 #define CRYPTO_ERROR 0x40000000 /* error */ 85 86 /* 87 * Autokey event codes 88 */ 89 #define XEVNT_CMD(x) (CRPT_EVENT | (x)) 90 #define XEVNT_OK XEVNT_CMD(0) /* success */ 91 #define XEVNT_LEN XEVNT_CMD(1) /* bad field format or length */ 92 #define XEVNT_TSP XEVNT_CMD(2) /* bad timestamp */ 93 #define XEVNT_FSP XEVNT_CMD(3) /* bad filestamp */ 94 #define XEVNT_PUB XEVNT_CMD(4) /* bad or missing public key */ 95 #define XEVNT_MD XEVNT_CMD(5) /* unsupported digest type */ 96 #define XEVNT_KEY XEVNT_CMD(6) /* unsupported identity type */ 97 #define XEVNT_SGL XEVNT_CMD(7) /* bad signature length */ 98 #define XEVNT_SIG XEVNT_CMD(8) /* signature not verified */ 99 #define XEVNT_VFY XEVNT_CMD(9) /* certificate not verified */ 100 #define XEVNT_PER XEVNT_CMD(10) /* host certificate expired */ 101 #define XEVNT_CKY XEVNT_CMD(11) /* bad or missing cookie */ 102 #define XEVNT_DAT XEVNT_CMD(12) /* bad or missing leapseconds */ 103 #define XEVNT_CRT XEVNT_CMD(13) /* bad or missing certificate */ 104 #define XEVNT_ID XEVNT_CMD(14) /* bad or missing group key */ 105 #define XEVNT_ERR XEVNT_CMD(15) /* protocol error */ 106 107 /* 108 * Miscellaneous crypto stuff 109 */ 110 #define NTP_MAXSESSION 100 /* maximum session key list entries */ 111 #define NTP_MAXEXTEN 2048 /* maximum extension field size */ 112 #define NTP_AUTOMAX 12 /* default key list timeout (log2 s) */ 113 #define KEY_REVOKE 17 /* default key revoke timeout (log2 s) */ 114 #define NTP_REFRESH 19 /* default restart timeout (log2 s) */ 115 #define NTP_MAXKEY 65535 /* maximum symmetric key ID */ 116 117 /* 118 * The autokey structure holds the values used to authenticate key IDs. 119 */ 120 struct autokey { /* network byte order */ 121 keyid_t key; /* key ID */ 122 int32 seq; /* key number */ 123 }; 124 125 /* 126 * The value structure holds variable length data such as public 127 * key, agreement parameters, public valule and leapsecond table. 128 * They are in network byte order. 129 */ 130 struct value { /* network byte order */ 131 tstamp_t tstamp; /* timestamp */ 132 tstamp_t fstamp; /* filestamp */ 133 u_int32 vallen; /* value length */ 134 void *ptr; /* data pointer (various) */ 135 u_int32 siglen; /* signature length */ 136 u_char *sig; /* signature */ 137 }; 138 139 /* 140 * The packet extension field structures are used to hold values 141 * and signatures in network byte order. 142 */ 143 struct exten { 144 u_int32 opcode; /* opcode */ 145 u_int32 associd; /* association ID */ 146 u_int32 tstamp; /* timestamp */ 147 u_int32 fstamp; /* filestamp */ 148 u_int32 vallen; /* value length */ 149 u_int32 pkt[1]; /* start of value field */ 150 }; 151 152 153 /* 154 * The certificate info/value structure 155 */ 156 struct cert_info { 157 struct cert_info *link; /* forward link */ 158 u_int flags; /* flags that wave */ 159 EVP_PKEY *pkey; /* generic key */ 160 long version; /* X509 version */ 161 int nid; /* signature/digest ID */ 162 const EVP_MD *digest; /* message digest algorithm */ 163 u_long serial; /* serial number */ 164 struct calendar first; /* not valid before */ 165 struct calendar last; /* not valid after */ 166 char *subject; /* subject common name */ 167 char *issuer; /* issuer common name */ 168 BIGNUM *grpkey; /* GQ group key */ 169 struct value cert; /* certificate/value */ 170 }; 171 172 /* 173 * The keys info/value structure 174 */ 175 struct pkey_info { 176 struct pkey_info *link; /* forward link */ 177 EVP_PKEY *pkey; /* generic key */ 178 char *name; /* file name */ 179 tstamp_t fstamp; /* filestamp */ 180 }; 181 182 /* 183 * Cryptographic values 184 */ 185 extern u_int crypto_flags; /* status word */ 186 extern int crypto_nid; /* digest nid */ 187 extern struct value hostval; /* host name/value */ 188 extern struct cert_info *cinfo; /* host certificate information */ 189 extern struct value tai_leap; /* leapseconds table */ 190 #endif /* AUTOKEY */ 191 #endif /* NTP_CRYPTO_H */ 192