mirror of
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36 lines
700 B
Python
36 lines
700 B
Python
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#!/usr/bin/env python
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import sys
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import pywii as wii
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if len(sys.argv) != 4:
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print "Usage: %s keyfile.priv infile outfile"%sys.argv[0]
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sys.exit(1)
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if sys.argv[1] == "-":
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k = sys.stdin.read()
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else:
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k = open(sys.argv[1],"rb").read()
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if len(k) != 30:
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print "Failed to read private key"
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sys.exit(2)
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indata = open(sys.argv[2],"rb").read()
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sha = wii.SHA.new(indata).digest()
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print "SHA1: %s"%sha.encode('hex')
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print
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print "Signature:"
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r,s = wii.ec.generate_ecdsa(k,sha)
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print "R =",r[:15].encode('hex')
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print " ",r[15:].encode('hex')
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print "S =",s[:15].encode('hex')
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print " ",s[15:].encode('hex')
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outdata = "SIG0" + r + s + indata
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fd = open(sys.argv[3],"wb")
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fd.write(outdata)
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fd.close()
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