2016-11-30 10:57:03 +01:00
|
|
|
#!/usr/bin/env python2
|
2016-11-23 06:35:12 +01:00
|
|
|
|
|
|
|
|
import sys
|
|
|
|
|
import pywii as wii
|
|
|
|
|
|
|
|
|
|
if len(sys.argv) != 3:
|
|
|
|
|
print "Usage: %s keyfile.[priv|pub] infile"%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) not in (30,60):
|
|
|
|
|
print "Failed to read key"
|
|
|
|
|
sys.exit(2)
|
|
|
|
|
|
|
|
|
|
if len(k) == 30:
|
|
|
|
|
print "Key is a private key, generating public key..."
|
|
|
|
|
q = wii.ec.priv_to_pub(k)
|
|
|
|
|
else:
|
|
|
|
|
q = k
|
|
|
|
|
|
|
|
|
|
print "Public key:"
|
|
|
|
|
pq = q.encode('hex')
|
|
|
|
|
print "X =",pq[:30]
|
|
|
|
|
print " ",pq[30:60]
|
|
|
|
|
print "Y =",pq[60:90]
|
|
|
|
|
print " ",pq[90:]
|
|
|
|
|
print
|
|
|
|
|
|
|
|
|
|
indata = open(sys.argv[2],"rb").read()
|
|
|
|
|
|
|
|
|
|
if len(indata) < 64 or indata[:4] != "SIG0":
|
|
|
|
|
print "Invalid header"
|
|
|
|
|
sys.exit(3)
|
|
|
|
|
|
|
|
|
|
r = indata[4:34]
|
|
|
|
|
s = indata[34:64]
|
|
|
|
|
|
|
|
|
|
sha = wii.SHA.new(indata[64:]).digest()
|
|
|
|
|
print "SHA1: %s"%sha.encode('hex')
|
|
|
|
|
|
|
|
|
|
print
|
|
|
|
|
print "Signature:"
|
|
|
|
|
print "R =",r[:15].encode('hex')
|
|
|
|
|
print " ",r[15:].encode('hex')
|
|
|
|
|
print "S =",s[:15].encode('hex')
|
|
|
|
|
print " ",s[15:].encode('hex')
|
|
|
|
|
print
|
|
|
|
|
|
|
|
|
|
if wii.ec.check_ecdsa(q,r,s,sha):
|
|
|
|
|
print "Signature is VALID"
|
|
|
|
|
else:
|
|
|
|
|
print "Signature is INVALID"
|
|
|
|
|
sys.exit(4)
|
|
|
|
|
|
