rsa2pub.c (652B)
1 #include <u.h> 2 #include <libc.h> 3 #include <auth.h> 4 #include <mp.h> 5 #include <libsec.h> 6 #include "rsa2any.h" 7 8 void 9 usage(void) 10 { 11 fprint(2, "usage: auth/rsa2pub [file]\n"); 12 exits("usage"); 13 } 14 15 void 16 main(int argc, char **argv) 17 { 18 RSApriv *key; 19 Attr *a; 20 char *s; 21 22 fmtinstall('A', _attrfmt); 23 fmtinstall('B', mpfmt); 24 quotefmtinstall(); 25 26 ARGBEGIN{ 27 default: 28 usage(); 29 }ARGEND 30 31 if(argc > 1) 32 usage(); 33 34 if((key = getkey(argc, argv, 0, &a)) == nil) 35 sysfatal("%r"); 36 37 s = smprint("key %A size=%d ek=%lB n=%lB\n", 38 a, 39 mpsignif(key->pub.n), key->pub.ek, key->pub.n); 40 if(s == nil) 41 sysfatal("smprint: %r"); 42 write(1, s, strlen(s)); 43 exits(nil); 44 }