Initial commit

pywii/pywii-tools/ecpriv2pub.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+import sys
+import pywii as wii
+
+if len(sys.argv) not in (2,3):
+	print "Usage: %s keyfile.priv [keyfile.pub]"%sys.argv[0]
+	sys.exit(1)
+
+if sys.argv[1] == "-":
+	k = sys.stdin.read()
+else:
+	k = open(sys.argv[1],"rb").read()
+if len(k) != 30:
+	print "Failed to read private key"
+	sys.exit(2)
+
+print "Public key:"
+q = wii.ec.priv_to_pub(k)
+pq = q.encode('hex')
+print "X =",pq[:30]
+print "   ",pq[30:60]
+print "Y =",pq[60:90]
+print "   ",pq[90:]
+
+if len(sys.argv) == 3:
+	fd = open(sys.argv[2],"wb")
+	fd.write(q)
+	fd.close()
+	print "Saved public key to %s"%sys.argv[2]