nortti
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qrcrypt
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This commit is contained in:
Juhani Krekelä 2020-06-25 17:23:36 +03:00
parent a81707896b
commit d2335a8e35
1 changed files with 1 additions and 1 deletions
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qrcrypt.py
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@ -46,6 +46,6 @@ if __name__ == '__main__':
elif sys.argv[1] == '-D':
with open(sys.argv[2],'rb')as f:sk=f.read()
e=sys.stdin.buffer.read();epk=e[:32];n=e[32:56];rss=ecdh(epk,sk);k=hcc20(rss,b'\x00'*24);k=hcc20(k, n[:16]);n=b'\x00'*4+n[16:];c=e[56:-16]
if not secrets.compare_digest(e[-16:],tag(k,n,c)):pe('Error: auth fail',file=sys.stderr)
if not secrets.compare_digest(e[-16:],tag(k,n,c)):pe('Error: auth fail')
else:sys.stdout.buffer.write(bytes(cc20(k,n,c)))
else:us()