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authorrsc <devnull@localhost>2005-02-13 18:04:20 +0000
committerrsc <devnull@localhost>2005-02-13 18:04:20 +0000
commit57fcfc2a0b8ecd266ce130dab9a29b7ceb558d64 (patch)
tree2d7dc505e9bda2e49efdc13ed459d7e2fad5f579 /src/cmd/auth/asn12rsa.c
parentce94dbe662155bd60d6839b5e8c82ad708667bcd (diff)
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Diffstat (limited to 'src/cmd/auth/asn12rsa.c')
-rw-r--r--src/cmd/auth/asn12rsa.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/src/cmd/auth/asn12rsa.c b/src/cmd/auth/asn12rsa.c
new file mode 100644
index 00000000..a2df0447
--- /dev/null
+++ b/src/cmd/auth/asn12rsa.c
@@ -0,0 +1,71 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <mp.h>
+#include <libsec.h>
+
+void
+usage(void)
+{
+ fprint(2, "auth/asn12rsa [-t tag] [file]\n");
+ exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+ char *s;
+ uchar *buf;
+ int fd;
+ long n, tot;
+ char *tag, *file;
+ RSApriv *key;
+
+ fmtinstall('B', mpfmt);
+
+ tag = nil;
+ ARGBEGIN{
+ case 't':
+ tag = EARGF(usage());
+ break;
+ default:
+ usage();
+ }ARGEND
+
+ if(argc != 0 && argc != 1)
+ usage();
+
+ if(argc == 1)
+ file = argv[0];
+ else
+ file = "/dev/stdin";
+
+ if((fd = open(file, OREAD)) < 0)
+ sysfatal("open %s: %r", file);
+ buf = nil;
+ tot = 0;
+ for(;;){
+ buf = realloc(buf, tot+8192);
+ if(buf == nil)
+ sysfatal("realloc: %r");
+ if((n = read(fd, buf+tot, 8192)) < 0)
+ sysfatal("read: %r");
+ if(n == 0)
+ break;
+ tot += n;
+ }
+
+ key = asn1toRSApriv(buf, tot);
+ if(key == nil)
+ sysfatal("couldn't parse asn1 key");
+
+ 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");
+ write(1, s, strlen(s));
+ exits(0);
+}