ref: dfb4b522830edab8f3856289d326d6cf5e930644
dir: /sys/src/cmd/auth/rsagen.c/
#include <u.h> #include <libc.h> #include <mp.h> #include <libsec.h> void usage(void) { fprint(2, "usage: auth/rsagen [-b bits] [-t 'attr=value attr=value ...']\n"); exits("usage"); } void main(int argc, char **argv) { char *s; int bits; char *tag; RSApriv *key; bits = 2048; tag = nil; key = nil; fmtinstall('B', mpfmt); ARGBEGIN{ case 'b': bits = atoi(EARGF(usage())); if(bits == 0) usage(); break; case 't': tag = EARGF(usage()); break; default: usage(); }ARGEND if(argc != 0) usage(); do{ if(key) rsaprivfree(key); key = rsagen(bits, 0, 0); }while(mpsignif(key->pub.n) != bits); s = smprint("key proto=rsa %s%ssize=%d ek=%B !dk=%B n=%B !p=%B !q=%B !kp=%B !kq=%B !c2=%B\n", tag ? tag : "", tag ? " " : "", mpsignif(key->pub.n), key->pub.ek, key->dk, key->pub.n, key->p, key->q, key->kp, key->kq, key->c2); if(s == nil) sysfatal("smprint: %r"); if(write(1, s, strlen(s)) != strlen(s)) sysfatal("write: %r"); exits(nil); }