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1 #include <u.h>2 #include <libc.h>3 #include <mp.h>4 #include <libsec.h>6 void7 usage(void)8 {9 fprint(2, "usage: auth/dsagen [-t 'attr=value attr=value ...']\n");10 exits("usage");11 }13 void14 main(int argc, char **argv)15 {16 char *s;17 char *tag;18 DSApriv *key;20 tag = nil;21 key = nil;22 fmtinstall('B', mpfmt);24 ARGBEGIN{25 case 't':26 tag = EARGF(usage());27 break;28 default:29 usage();30 }ARGEND32 if(argc != 0)33 usage();35 key = dsagen(nil);37 s = smprint("key proto=dsa %s%sp=%lB q=%lB alpha=%lB key=%lB !secret=%lB\n",38 tag ? tag : "", tag ? " " : "",39 key->pub.p, key->pub.q, key->pub.alpha, key->pub.key,40 key->secret);41 if(s == nil)42 sysfatal("smprint: %r");44 if(write(1, s, strlen(s)) != strlen(s))45 sysfatal("write: %r");47 exits(nil);48 }