2 #pragma src "/sys/src/libsec"
6 typedef struct mpint mpint;
20 typedef struct AESstate AESstate;
27 void *ekey; /* expanded encryption round key */
28 void *dkey; /* expanded decryption round key */
29 uchar key[AESmaxkey]; /* unexpanded key */
30 uchar ivec[AESbsize]; /* initialization vector */
31 uchar storage[512]; /* storage for expanded keys */
35 extern void (*aes_encrypt)(ulong rk[], int Nr, uchar pt[16], uchar ct[16]);
36 extern void (*aes_decrypt)(ulong rk[], int Nr, uchar ct[16], uchar pt[16]);
38 void setupAESstate(AESstate *s, uchar key[], int nkey, uchar *ivec);
40 void aesCBCencrypt(uchar *p, int len, AESstate *s);
41 void aesCBCdecrypt(uchar *p, int len, AESstate *s);
42 void aesCFBencrypt(uchar *p, int len, AESstate *s);
43 void aesCFBdecrypt(uchar *p, int len, AESstate *s);
44 void aesOFBencrypt(uchar *p, int len, AESstate *s);
46 void aes_xts_encrypt(AESstate *tweak, AESstate *ecb, uvlong sectorNumber, uchar *input, uchar *output, ulong len);
47 void aes_xts_decrypt(AESstate *tweak, AESstate *ecb, uvlong sectorNumber, uchar *input, uchar *output, ulong len);
49 typedef struct AESGCMstate AESGCMstate;
58 void setupAESGCMstate(AESGCMstate *s, uchar *key, int keylen, uchar *iv, int ivlen);
59 void aesgcm_setiv(AESGCMstate *s, uchar *iv, int ivlen);
60 void aesgcm_encrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], AESGCMstate *s);
61 int aesgcm_decrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], AESGCMstate *s);
64 * Blowfish Definitions
73 /* 16-round Blowfish */
74 typedef struct BFstate BFstate;
82 u32int pbox[BFrounds+2];
86 void setupBFstate(BFstate *s, uchar key[], int keybytes, uchar *ivec);
87 void bfCBCencrypt(uchar*, int, BFstate*);
88 void bfCBCdecrypt(uchar*, int, BFstate*);
89 void bfECBencrypt(uchar*, int, BFstate*);
90 void bfECBdecrypt(uchar*, int, BFstate*);
104 typedef struct Chachastate Chachastate;
121 void setupChachastate(Chachastate*, uchar*, ulong, uchar*, ulong, int);
122 void chacha_setiv(Chachastate *, uchar*);
123 void chacha_setblock(Chachastate*, u64int);
124 void chacha_encrypt(uchar*, ulong, Chachastate*);
125 void chacha_encrypt2(uchar*, uchar*, ulong, Chachastate*);
127 void hchacha(uchar h[32], uchar *key, ulong keylen, uchar nonce[16], int rounds);
129 void ccpoly_encrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], Chachastate *cs);
130 int ccpoly_decrypt(uchar *dat, ulong ndat, uchar *aad, ulong naad, uchar tag[16], Chachastate *cs);
143 typedef struct Salsastate Salsastate;
152 void setupSalsastate(Salsastate*, uchar*, ulong, uchar*, ulong, int);
153 void salsa_setiv(Salsastate*, uchar*);
154 void salsa_setblock(Salsastate*, u64int);
155 void salsa_encrypt(uchar*, ulong, Salsastate*);
156 void salsa_encrypt2(uchar*, uchar*, ulong, Salsastate*);
158 void salsa_core(u32int in[16], u32int out[16], int rounds);
160 void hsalsa(uchar h[32], uchar *key, ulong keylen, uchar nonce[16], int rounds);
172 typedef struct DESstate DESstate;
176 uchar key[8]; /* unexpanded key */
177 ulong expanded[32]; /* expanded key */
178 uchar ivec[8]; /* initialization vector */
181 void setupDESstate(DESstate *s, uchar key[8], uchar *ivec);
182 void des_key_setup(uchar[8], ulong[32]);
183 void block_cipher(ulong*, uchar*, int);
184 void desCBCencrypt(uchar*, int, DESstate*);
185 void desCBCdecrypt(uchar*, int, DESstate*);
186 void desECBencrypt(uchar*, int, DESstate*);
187 void desECBdecrypt(uchar*, int, DESstate*);
189 /* for backward compatibility with 7-byte DES key format */
190 void des56to64(uchar *k56, uchar *k64);
191 void des64to56(uchar *k64, uchar *k56);
192 void key_setup(uchar[7], ulong[32]);
194 /* triple des encrypt/decrypt orderings */
204 typedef struct DES3state DES3state;
208 uchar key[3][8]; /* unexpanded key */
209 ulong expanded[3][32]; /* expanded key */
210 uchar ivec[8]; /* initialization vector */
213 void setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec);
214 void triple_block_cipher(ulong keys[3][32], uchar*, int);
215 void des3CBCencrypt(uchar*, int, DES3state*);
216 void des3CBCdecrypt(uchar*, int, DES3state*);
217 void des3ECBencrypt(uchar*, int, DES3state*);
218 void des3ECBdecrypt(uchar*, int, DES3state*);
226 SHA1dlen= 20, /* SHA digest length */
227 SHA2_224dlen= 28, /* SHA-224 digest length */
228 SHA2_256dlen= 32, /* SHA-256 digest length */
229 SHA2_384dlen= 48, /* SHA-384 digest length */
230 SHA2_512dlen= 64, /* SHA-512 digest length */
231 MD4dlen= 16, /* MD4 digest length */
232 MD5dlen= 16, /* MD5 digest length */
233 RIPEMD160dlen= 20, /* RIPEMD-160 digest length */
234 Poly1305dlen= 16, /* Poly1305 digest length */
236 Hmacblksz = 64, /* in bytes; from rfc2104 */
239 typedef struct DigestState DigestState;
252 typedef struct DigestState SHAstate; /* obsolete name */
253 typedef struct DigestState SHA1state;
254 typedef struct DigestState SHA2_224state;
255 typedef struct DigestState SHA2_256state;
256 typedef struct DigestState SHA2_384state;
257 typedef struct DigestState SHA2_512state;
258 typedef struct DigestState MD5state;
259 typedef struct DigestState MD4state;
261 DigestState* md4(uchar*, ulong, uchar*, DigestState*);
262 DigestState* md5(uchar*, ulong, uchar*, DigestState*);
263 DigestState* ripemd160(uchar *, ulong, uchar *, DigestState *);
264 DigestState* sha1(uchar*, ulong, uchar*, DigestState*);
265 DigestState* sha2_224(uchar*, ulong, uchar*, DigestState*);
266 DigestState* sha2_256(uchar*, ulong, uchar*, DigestState*);
267 DigestState* sha2_384(uchar*, ulong, uchar*, DigestState*);
268 DigestState* sha2_512(uchar*, ulong, uchar*, DigestState*);
269 DigestState* hmac_x(uchar *p, ulong len, uchar *key, ulong klen,
270 uchar *digest, DigestState *s,
271 DigestState*(*x)(uchar*, ulong, uchar*, DigestState*),
273 DigestState* hmac_md5(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
274 DigestState* hmac_sha1(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
275 DigestState* hmac_sha2_224(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
276 DigestState* hmac_sha2_256(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
277 DigestState* hmac_sha2_384(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
278 DigestState* hmac_sha2_512(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
279 DigestState* poly1305(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
282 * random number generation
284 void genrandom(uchar *buf, int nbytes);
285 void prng(uchar *buf, int nbytes);
286 ulong fastrand(void);
287 ulong nfastrand(ulong);
292 void genprime(mpint *p, int n, int accuracy); /* generate n-bit probable prime */
293 void gensafeprime(mpint *p, mpint *alpha, int n, int accuracy); /* prime & generator */
294 void genstrongprime(mpint *p, int n, int accuracy); /* generate n-bit strong prime */
295 void DSAprimes(mpint *q, mpint *p, uchar seed[SHA1dlen]);
296 int probably_prime(mpint *n, int nrep); /* miller-rabin test */
297 int smallprimetest(mpint *p); /* returns -1 if not prime, 0 otherwise */
302 typedef struct RC4state RC4state;
310 void setupRC4state(RC4state*, uchar*, int);
311 void rc4(RC4state*, uchar*, int);
312 void rc4skip(RC4state*, int);
313 void rc4back(RC4state*, int);
318 typedef struct RSApub RSApub;
319 typedef struct RSApriv RSApriv;
320 typedef struct PEMChain PEMChain;
322 /* public/encryption key */
325 mpint *n; /* modulus */
326 mpint *ek; /* exp (encryption key) */
329 /* private/decryption key */
334 mpint *dk; /* exp (decryption key) */
336 /* precomputed values to help with chinese remainder theorem calc */
339 mpint *kp; /* dk mod p-1 */
340 mpint *kq; /* dk mod q-1 */
341 mpint *c2; /* (inv p) mod q */
350 RSApriv* rsagen(int nlen, int elen, int rounds);
351 RSApriv* rsafill(mpint *n, mpint *e, mpint *d, mpint *p, mpint *q);
352 mpint* rsaencrypt(RSApub *k, mpint *in, mpint *out);
353 mpint* rsadecrypt(RSApriv *k, mpint *in, mpint *out);
354 RSApub* rsapuballoc(void);
355 void rsapubfree(RSApub*);
356 RSApriv* rsaprivalloc(void);
357 void rsaprivfree(RSApriv*);
358 RSApub* rsaprivtopub(RSApriv*);
359 RSApub* X509toRSApub(uchar*, int, char*, int);
360 RSApub* asn1toRSApub(uchar*, int);
361 RSApriv* asn1toRSApriv(uchar*, int);
362 void asn1dump(uchar *der, int len);
363 uchar* decodePEM(char *s, char *type, int *len, char **new_s);
364 PEMChain* decodepemchain(char *s, char *type);
365 uchar* X509rsagen(RSApriv *priv, char *subj, ulong valid[2], int *certlen);
366 uchar* X509rsareq(RSApriv *priv, char *subj, int *certlen);
367 char* X509rsaverify(uchar *cert, int ncert, RSApub *pk);
368 char* X509rsaverifydigest(uchar *sig, int siglen, uchar *edigest, int edigestlen, RSApub *pk);
370 void X509dump(uchar *cert, int ncert);
372 mpint* pkcs1padbuf(uchar *buf, int len, mpint *modulus, int blocktype);
373 int pkcs1unpadbuf(uchar *buf, int len, mpint *modulus, int blocktype);
374 int asn1encodeRSApub(RSApub *pk, uchar *buf, int len);
375 int asn1encodeRSApriv(RSApriv *k, uchar *buf, int len);
376 int asn1encodedigest(DigestState* (*fun)(uchar*, ulong, uchar*, DigestState*),
377 uchar *digest, uchar *buf, int len);
379 int X509digestSPKI(uchar *, int, DigestState* (*)(uchar*, ulong, uchar*, DigestState*), uchar *);
384 typedef struct EGpub EGpub;
385 typedef struct EGpriv EGpriv;
386 typedef struct EGsig EGsig;
388 /* public/encryption key */
391 mpint *p; /* modulus */
392 mpint *alpha; /* generator */
393 mpint *key; /* (encryption key) alpha**secret mod p */
396 /* private/decryption key */
400 mpint *secret; /* (decryption key) */
409 EGpriv* eggen(int nlen, int rounds);
410 mpint* egencrypt(EGpub *k, mpint *in, mpint *out); /* deprecated */
411 mpint* egdecrypt(EGpriv *k, mpint *in, mpint *out);
412 EGsig* egsign(EGpriv *k, mpint *m);
413 int egverify(EGpub *k, EGsig *sig, mpint *m);
414 EGpub* egpuballoc(void);
415 void egpubfree(EGpub*);
416 EGpriv* egprivalloc(void);
417 void egprivfree(EGpriv*);
418 EGsig* egsigalloc(void);
419 void egsigfree(EGsig*);
420 EGpub* egprivtopub(EGpriv*);
425 typedef struct DSApub DSApub;
426 typedef struct DSApriv DSApriv;
427 typedef struct DSAsig DSAsig;
429 /* public/encryption key */
432 mpint *p; /* modulus */
433 mpint *q; /* group order, q divides p-1 */
434 mpint *alpha; /* group generator */
435 mpint *key; /* (encryption key) alpha**secret mod p */
438 /* private/decryption key */
442 mpint *secret; /* (decryption key) */
451 DSApriv* dsagen(DSApub *opub); /* opub not checked for consistency! */
452 DSAsig* dsasign(DSApriv *k, mpint *m);
453 int dsaverify(DSApub *k, DSAsig *sig, mpint *m);
454 DSApub* dsapuballoc(void);
455 void dsapubfree(DSApub*);
456 DSApriv* dsaprivalloc(void);
457 void dsaprivfree(DSApriv*);
458 DSAsig* dsasigalloc(void);
459 void dsasigfree(DSAsig*);
460 DSApub* dsaprivtopub(DSApriv*);
465 typedef struct Thumbprint{
466 struct Thumbprint *next;
467 uchar hash[SHA2_256dlen];
471 typedef struct TLSconn{
472 char dir[40]; /* connection directory */
473 uchar *cert; /* certificate (local on input, remote on output) */
479 int (*trace)(char*fmt, ...);
480 PEMChain*chain; /* optional extra certificate evidence for servers to present */
490 int tlsClient(int fd, TLSconn *c);
491 int tlsServer(int fd, TLSconn *c);
494 Thumbprint* initThumbprints(char *ok, char *crl, char *tag);
495 void freeThumbprints(Thumbprint *ok);
496 int okThumbprint(uchar *hash, int len, Thumbprint *ok);
497 int okCertificate(uchar *cert, int len, Thumbprint *ok);
500 uchar *readcert(char *filename, int *pcertlen);
501 PEMChain*readcertchain(char *filename);
503 typedef struct ECpoint{
507 mpint *z; /* nil when using affine coordinates */
510 typedef ECpoint ECpub;
511 typedef struct ECpriv{
516 typedef struct ECdomain{
525 void ecdominit(ECdomain *, void (*init)(mpint *p, mpint *a, mpint *b, mpint *x, mpint *y, mpint *n, mpint *h));
526 void ecdomfree(ECdomain *);
528 void ecassign(ECdomain *, ECpoint *old, ECpoint *new);
529 void ecadd(ECdomain *, ECpoint *a, ECpoint *b, ECpoint *s);
530 void ecmul(ECdomain *, ECpoint *a, mpint *k, ECpoint *s);
531 ECpoint* strtoec(ECdomain *, char *, char **, ECpoint *);
532 ECpriv* ecgen(ECdomain *, ECpriv*);
533 int ecverify(ECdomain *, ECpoint *);
534 int ecpubverify(ECdomain *, ECpub *);
535 void ecdsasign(ECdomain *, ECpriv *, uchar *, int, mpint *, mpint *);
536 int ecdsaverify(ECdomain *, ECpub *, uchar *, int, mpint *, mpint *);
537 void base58enc(uchar *, char *, int);
538 int base58dec(char *, uchar *, int);
540 ECpub* ecdecodepub(ECdomain *dom, uchar *, int);
541 int ecencodepub(ECdomain *dom, ECpub *, uchar *, int);
542 void ecpubfree(ECpub *);
544 ECpub* X509toECpub(uchar *cert, int ncert, char *name, int nname, ECdomain *dom);
545 char* X509ecdsaverify(uchar *cert, int ncert, ECdomain *dom, ECpub *pub);
546 char* X509ecdsaverifydigest(uchar *sig, int siglen, uchar *edigest, int edigestlen, ECdomain *dom, ECpub *pub);
549 void secp256r1(mpint *p, mpint *a, mpint *b, mpint *x, mpint *y, mpint *n, mpint *h);
550 void secp256k1(mpint *p, mpint *a, mpint *b, mpint *x, mpint *y, mpint *n, mpint *h);
551 void secp384r1(mpint *p, mpint *a, mpint *b, mpint *x, mpint *y, mpint *n, mpint *h);
554 * Diffie-Hellman key exchange
557 typedef struct DHstate DHstate;
560 mpint *g; /* base g */
561 mpint *p; /* large prime */
562 mpint *q; /* subgroup prime */
563 mpint *x; /* random secret */
564 mpint *y; /* public key y = g**x % p */
567 /* generate new public key: y = g**x % p */
568 mpint* dh_new(DHstate *dh, mpint *p, mpint *q, mpint *g);
570 /* calculate shared key: k = y**x % p */
571 mpint* dh_finish(DHstate *dh, mpint *y);
573 /* Curve25519 elliptic curve, public key function */
574 void curve25519(uchar mypublic[32], uchar secret[32], uchar basepoint[32]);
576 /* Curve25519 diffie hellman */
577 void curve25519_dh_new(uchar x[32], uchar y[32]);
578 void curve25519_dh_finish(uchar x[32], uchar y[32], uchar z[32]);
580 /* password-based key derivation function 2 (rfc2898) */
581 void pbkdf2_x(uchar *p, ulong plen, uchar *s, ulong slen, ulong rounds, uchar *d, ulong dlen,
582 DigestState* (*x)(uchar*, ulong, uchar*, ulong, uchar*, DigestState*), int xlen);
584 /* scrypt password-based key derivation function */
585 char* scrypt(uchar *p, ulong plen, uchar *s, ulong slen,
586 ulong N, ulong R, ulong P,
587 uchar *d, ulong dlen);
589 /* hmac-based key derivation function (rfc5869) */
590 void hkdf_x(uchar *salt, ulong nsalt, uchar *info, ulong ninfo, uchar *key, ulong nkey, uchar *d, ulong dlen,
591 DigestState* (*x)(uchar*, ulong, uchar*, ulong, uchar*, DigestState*), int xlen);
593 /* timing safe memcmp() */
594 int tsmemcmp(void*, void*, ulong);