ref: 6fa3e08412c49a188e2abe7d9ee54cd1f37a85f5
dir: /sys/src/cmd/auth/rsa2asn1.c/
#include <u.h> #include <libc.h> #include <auth.h> #include <mp.h> #include <libsec.h> #include "rsa2any.h" void usage(void) { fprint(2, "usage: auth/rsa2asn1 [file]\n"); exits("usage"); } void main(int argc, char **argv) { uchar buf[16*1024]; RSApriv *k; int n; ARGBEGIN{ default: usage(); }ARGEND if(argc > 1) usage(); if((k = getrsakey(argc, argv, 0, nil)) == nil) sysfatal("%r"); if((n = asn1encodeRSApub(&k->pub, buf, sizeof(buf))) < 0) sysfatal("asn1encodeRSApub: %r"); if(write(1, buf, n) != n) sysfatal("write: %r"); exits(nil); }