def test_nonTransitiveConvert(self):
self.addMember()
sig1 = groupsig.sign(b"Hello, World1!", self.memkeys[0], self.grpkey)
sig2 = groupsig.sign(b"Hello, World2!", self.memkeys[0], self.grpkey)
b = groupsig.verify(sig1, b"Hello, World1!", self.grpkey)
self.assertTrue(b)
b = groupsig.verify(sig2, b"Hello, World2!", self.grpkey)
self.assertTrue(b)
bkey = bldkey.bldkey_random(self.code, self.grpkey)
out = groupsig.blind(self.grpkey, sig1, "Hello, World1!", bkey)
bsig1 = out["bsig"]
out = groupsig.blind(self.grpkey, sig2, "Hello, World2!", bkey)
bsig2 = out["bsig"]
bkey_pub = bldkey.bldkey_import(constants.GL19_CODE,
bldkey.bldkey_export_pub(bkey))
csigs1 = groupsig.convert([bsig1],
self.grpkey,
bkey_pub,
mgrkey=self.cnvkey)
csigs2 = groupsig.convert([bsig2],
self.grpkey,
bkey_pub,
mgrkey=self.cnvkey)
nym1 = groupsig.unblind(csigs1[0], bkey)
nym2 = groupsig.unblind(csigs2[0], bkey)
self.assertNotEqual(nym1['nym'], nym2['nym'])
def test_bldkeyExportImportPub(self):
bldkey_str = bldkey.bldkey_export_pub(self.bldkey)
bkey = bldkey.bldkey_import(self.code, bldkey_str)
# This is quite useless, as import returns an exception if the FFI
# method returns ffi.NULL. Maybe implementing a cmp function for
# bld keys would be good for testing this (and also in general?)
self.assertIsNot(ffi.NULL, bkey)
import sys
from pygroupsig import groupsig
from pygroupsig import bldkey
from pygroupsig import blindsig
from pygroupsig import constants
if len(sys.argv) != 4:
print("Usage: $python blind.py <bldkey str> <csig1 str> <csig2 str>")
sys.exit()
groupsig.init(constants.GL19_CODE, 0)
# Import blinding key
bsk = bldkey.bldkey_import(constants.GL19_CODE, sys.argv[1])
# Import converted signatures
csig1 = blindsig.blindsig_import(constants.GL19_CODE, sys.argv[2])
csig2 = blindsig.blindsig_import(constants.GL19_CODE, sys.argv[3])
# Unblind
nym1 = groupsig.unblind(csig1, bsk)
nym2 = groupsig.unblind(csig2, bsk)
print("Sig1:\n\tNym: %s\n\tMessage: %s" % (nym1['nym'], nym1['msg']))
print("Sig2:\n\tNym: %s\n\tMessage: %s" % (nym2['nym'], nym2['msg']))