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test_aes_drbg.py
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test_aes_drbg.py
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#MIT License
#Copyright (c) 2019 Samuele Cornell
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.
import unittest
from test_vectors.parse_ctr_drbg import parse_test_vectors
from aes_drbg import AES_DRBG
class test_DRBG(unittest.TestCase):
def test_DRBG_AES_128_no_df(self):
print("\nTesting SP 800-90A, Rev 1 NIST AES-128 DRBG NO DERIVATION FUNCTION\n")
entropy, key, v, entropy_rs, r_bits = parse_test_vectors(128, df_used=False)
indx = 0
for i in range(len(entropy)):
drbg = AES_DRBG(256)
# TEST INSTANTIATE
drbg.instantiate(entropy[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST RESEED
drbg.reseed(entropy_rs[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_1
drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_2
returned_bits = drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
self.assertEqual(returned_bits, r_bits[i])
indx += 1
def test_DRBG_AES_192_no_df(self):
print("\nTesting SP 800-90A, Rev 1 NIST AES-192 DRBG NO DERIVATION FUNCTION\n")
entropy, key, v, entropy_rs, r_bits = parse_test_vectors(128, df_used=False)
indx = 0
for i in range(len(entropy)):
drbg = AES_DRBG(256)
# TEST INSTANTIATE
drbg.instantiate(entropy[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST RESEED
drbg.reseed(entropy_rs[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_1
drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_2
returned_bits = drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
self.assertEqual(returned_bits, r_bits[i])
indx += 1
def test_DRBG_AES_256_no_df(self):
print("\nTesting SP 800-90A, Rev 1 NIST AES-256 DRBG NO DERIVATION FUNCTION\n")
entropy, key, v, entropy_rs, r_bits = parse_test_vectors(256, df_used=False)
indx = 0
for i in range(len(entropy)):
drbg = AES_DRBG(256)
# TEST INSTANTIATE
drbg.instantiate(entropy[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST RESEED
drbg.reseed(entropy_rs[i])
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_1
drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
indx += 1
# TEST GENERATE_2
returned_bits = drbg.generate(64)
self.assertEqual(drbg.key, key[indx])
self.assertEqual(drbg.V, v[indx])
self.assertEqual(returned_bits, r_bits[i])
indx += 1