ref: 717fa414af4a5aca573fcc123691b1786f704ad8
dir: /sys/src/libauthsrv/convT2M.c/
#include <u.h> #include <libc.h> #include <authsrv.h> #include <libsec.h> extern int form1B2M(char *ap, int n, uchar key[32]); int convT2M(Ticket *f, char *ap, int n, Authkey *key) { uchar *p; if(n < 1+CHALLEN+2*ANAMELEN) return 0; p = (uchar*)ap; *p++ = f->num; memmove(p, f->chal, CHALLEN), p += CHALLEN; memmove(p, f->cuid, ANAMELEN), p += ANAMELEN; memmove(p, f->suid, ANAMELEN), p += ANAMELEN; switch(f->form){ case 0: if(n < 1+CHALLEN+2*ANAMELEN+DESKEYLEN) return 0; memmove(p, f->key, DESKEYLEN), p += DESKEYLEN; n = p - (uchar*)ap; encrypt(key->des, ap, n); return n; case 1: if(n < 12+CHALLEN+2*ANAMELEN+NONCELEN+16) return 0; memmove(p, f->key, NONCELEN), p += NONCELEN; return form1B2M(ap, p - (uchar*)ap, key->pakkey); } return 0; }