1 #pragma lib "libsec.a" 2 #pragma src "/sys/src/libsec" 3 4 #ifndef _MPINT 5 typedef struct mpint mpint; 6 #endif 7 8 ///////////////////////////////////////////////////////// 9 // AES definitions 10 ///////////////////////////////////////////////////////// 11 12 enum 13 { 14 AESbsize= 16, 15 AESmaxkey= 32, 16 AESmaxrounds= 14 17 }; 18 19 typedef struct AESstate AESstate; 20 struct AESstate 21 { 22 ulong setup; 23 int rounds; 24 int keybytes; 25 uchar key[AESmaxkey]; /* unexpanded key */ 26 u32int ekey[4*(AESmaxrounds + 1)]; /* encryption key */ 27 u32int dkey[4*(AESmaxrounds + 1)]; /* decryption key */ 28 uchar ivec[AESbsize]; /* initialization vector */ 29 }; 30 31 void setupAESstate(AESstate *s, uchar key[], int keybytes, uchar *ivec); 32 void aesCBCencrypt(uchar *p, int len, AESstate *s); 33 void aesCBCdecrypt(uchar *p, int len, AESstate *s); 34 35 ///////////////////////////////////////////////////////// 36 // Blowfish Definitions 37 ///////////////////////////////////////////////////////// 38 39 enum 40 { 41 BFbsize = 8, 42 BFrounds = 16 43 }; 44 45 // 16-round Blowfish 46 typedef struct BFstate BFstate; 47 struct BFstate 48 { 49 ulong setup; 50 51 uchar key[56]; 52 uchar ivec[8]; 53 54 u32int pbox[BFrounds+2]; 55 u32int sbox[1024]; 56 }; 57 58 void setupBFstate(BFstate *s, uchar key[], int keybytes, uchar *ivec); 59 void bfCBCencrypt(uchar*, int, BFstate*); 60 void bfCBCdecrypt(uchar*, int, BFstate*); 61 void bfECBencrypt(uchar*, int, BFstate*); 62 void bfECBdecrypt(uchar*, int, BFstate*); 63 64 ///////////////////////////////////////////////////////// 65 // DES definitions 66 ///////////////////////////////////////////////////////// 67 68 enum 69 { 70 DESbsize= 8 71 }; 72 73 // single des 74 typedef struct DESstate DESstate; 75 struct DESstate 76 { 77 ulong setup; 78 uchar key[8]; /* unexpanded key */ 79 ulong expanded[32]; /* expanded key */ 80 uchar ivec[8]; /* initialization vector */ 81 }; 82 83 void setupDESstate(DESstate *s, uchar key[8], uchar *ivec); 84 void des_key_setup(uchar[8], ulong[32]); 85 void block_cipher(ulong*, uchar*, int); 86 void desCBCencrypt(uchar*, int, DESstate*); 87 void desCBCdecrypt(uchar*, int, DESstate*); 88 void desECBencrypt(uchar*, int, DESstate*); 89 void desECBdecrypt(uchar*, int, DESstate*); 90 91 // for backward compatibility with 7 byte DES key format 92 void des56to64(uchar *k56, uchar *k64); 93 void des64to56(uchar *k64, uchar *k56); 94 void key_setup(uchar[7], ulong[32]); 95 96 // triple des encrypt/decrypt orderings 97 enum { 98 DES3E= 0, 99 DES3D= 1, 100 DES3EEE= 0, 101 DES3EDE= 2, 102 DES3DED= 5, 103 DES3DDD= 7 104 }; 105 106 typedef struct DES3state DES3state; 107 struct DES3state 108 { 109 ulong setup; 110 uchar key[3][8]; /* unexpanded key */ 111 ulong expanded[3][32]; /* expanded key */ 112 uchar ivec[8]; /* initialization vector */ 113 }; 114 115 void setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec); 116 void triple_block_cipher(ulong keys[3][32], uchar*, int); 117 void des3CBCencrypt(uchar*, int, DES3state*); 118 void des3CBCdecrypt(uchar*, int, DES3state*); 119 void des3ECBencrypt(uchar*, int, DES3state*); 120 void des3ECBdecrypt(uchar*, int, DES3state*); 121 122 ///////////////////////////////////////////////////////// 123 // digests 124 ///////////////////////////////////////////////////////// 125 126 enum 127 { 128 SHA1dlen= 20, /* SHA digest length */ 129 MD4dlen= 16, /* MD4 digest length */ 130 MD5dlen= 16 /* MD5 digest length */ 131 }; 132 133 typedef struct DigestState DigestState; 134 struct DigestState 135 { 136 ulong len; 137 u32int state[5]; 138 uchar buf[128]; 139 int blen; 140 char malloced; 141 char seeded; 142 }; 143 typedef struct DigestState SHAstate; /* obsolete name */ 144 typedef struct DigestState SHA1state; 145 typedef struct DigestState MD5state; 146 typedef struct DigestState MD4state; 147 148 DigestState* md4(uchar*, ulong, uchar*, DigestState*); 149 DigestState* md5(uchar*, ulong, uchar*, DigestState*); 150 DigestState* sha1(uchar*, ulong, uchar*, DigestState*); 151 DigestState* hmac_md5(uchar*, ulong, uchar*, ulong, uchar*, DigestState*); 152 DigestState* hmac_sha1(uchar*, ulong, uchar*, ulong, uchar*, DigestState*); 153 char* sha1pickle(SHA1state*); 154 SHA1state* sha1unpickle(char*); 155 156 ///////////////////////////////////////////////////////// 157 // random number generation 158 ///////////////////////////////////////////////////////// 159 void genrandom(uchar *buf, int nbytes); 160 void prng(uchar *buf, int nbytes); 161 162 ///////////////////////////////////////////////////////// 163 // primes 164 ///////////////////////////////////////////////////////// 165 void genprime(mpint *p, int n, int accuracy); // generate an n bit probable prime 166 void gensafeprime(mpint *p, mpint *alpha, int n, int accuracy); // prime and generator 167 void genstrongprime(mpint *p, int n, int accuracy); // generate an n bit strong prime 168 void DSAprimes(mpint *q, mpint *p, uchar seed[SHA1dlen]); 169 int probably_prime(mpint *n, int nrep); // miller-rabin test 170 int smallprimetest(mpint *p); // returns -1 if not prime, 0 otherwise 171 172 ///////////////////////////////////////////////////////// 173 // rc4 174 ///////////////////////////////////////////////////////// 175 typedef struct RC4state RC4state; 176 struct RC4state 177 { 178 uchar state[256]; 179 uchar x; 180 uchar y; 181 }; 182 183 void setupRC4state(RC4state*, uchar*, int); 184 void rc4(RC4state*, uchar*, int); 185 void rc4skip(RC4state*, int); 186 void rc4back(RC4state*, int); 187 188 ///////////////////////////////////////////////////////// 189 // rsa 190 ///////////////////////////////////////////////////////// 191 typedef struct RSApub RSApub; 192 typedef struct RSApriv RSApriv; 193 194 // public/encryption key 195 struct RSApub 196 { 197 mpint *n; // modulus 198 mpint *ek; // exp (encryption key) 199 }; 200 201 // private/decryption key 202 struct RSApriv 203 { 204 RSApub pub; 205 206 mpint *dk; // exp (decryption key) 207 208 // precomputed values to help with chinese remainder theorem calc 209 mpint *p; 210 mpint *q; 211 mpint *kp; // dk mod p-1 212 mpint *kq; // dk mod q-1 213 mpint *c2; // (inv p) mod q 214 }; 215 216 RSApriv* rsagen(int nlen, int elen, int rounds); 217 mpint* rsaencrypt(RSApub *k, mpint *in, mpint *out); 218 mpint* rsadecrypt(RSApriv *k, mpint *in, mpint *out); 219 RSApub* rsapuballoc(void); 220 void rsapubfree(RSApub*); 221 RSApriv* rsaprivalloc(void); 222 void rsaprivfree(RSApriv*); 223 RSApub* rsaprivtopub(RSApriv*); 224 RSApub* X509toRSApub(uchar*, int, char*, int); 225 RSApriv* asn1toRSApriv(uchar*, int); 226 uchar* decodepem(char *s, char *type, int *len); 227 228 ///////////////////////////////////////////////////////// 229 // eg 230 ///////////////////////////////////////////////////////// 231 typedef struct EGpub EGpub; 232 typedef struct EGpriv EGpriv; 233 typedef struct EGsig EGsig; 234 235 // public/encryption key 236 struct EGpub 237 { 238 mpint *p; // modulus 239 mpint *alpha; // generator 240 mpint *key; // (encryption key) alpha**secret mod p 241 }; 242 243 // private/decryption key 244 struct EGpriv 245 { 246 EGpub pub; 247 mpint *secret; // (decryption key) 248 }; 249 250 // signature 251 struct EGsig 252 { 253 mpint *r, *s; 254 }; 255 256 EGpriv* eggen(int nlen, int rounds); 257 mpint* egencrypt(EGpub *k, mpint *in, mpint *out); 258 mpint* egdecrypt(EGpriv *k, mpint *in, mpint *out); 259 EGsig* egsign(EGpriv *k, mpint *m); 260 int egverify(EGpub *k, EGsig *sig, mpint *m); 261 EGpub* egpuballoc(void); 262 void egpubfree(EGpub*); 263 EGpriv* egprivalloc(void); 264 void egprivfree(EGpriv*); 265 EGsig* egsigalloc(void); 266 void egsigfree(EGsig*); 267 EGpub* egprivtopub(EGpriv*); 268 269 ///////////////////////////////////////////////////////// 270 // TLS 271 ///////////////////////////////////////////////////////// 272 typedef struct Thumbprint{ 273 struct Thumbprint *next; 274 uchar sha1[SHA1dlen]; 275 } Thumbprint; 276 277 typedef struct TLSconn{ 278 char dir[40]; // connection directory 279 uchar *cert; // certificate (local on input, remote on output) 280 uchar *sessionID; 281 int certlen, sessionIDlen; 282 int (*trace)(char*fmt, ...); 283 } TLSconn; 284 285 // tlshand.c 286 extern int tlsClient(int fd, TLSconn *c); 287 extern int tlsServer(int fd, TLSconn *c); 288 289 // thumb.c 290 extern Thumbprint* initThumbprints(char *ok, char *crl); 291 extern void freeThumbprints(Thumbprint *ok); 292 extern int okThumbprint(uchar *sha1, Thumbprint *ok); 293 294 // readcert.c 295 extern uchar *readcert(char *filename, int *pcertlen); 296