268 lines
12 KiB
Python
268 lines
12 KiB
Python
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import unittest
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import time
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from binascii import hexlify, unhexlify
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import ed25519
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from ed25519 import _ed25519 as raw
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def flip_bit(s, bit=0, in_byte=-1):
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as_bytes = [ord(b) for b in s]
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as_bytes[in_byte] = as_bytes[in_byte] ^ (0x01<<bit)
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return "".join([chr(b) for b in as_bytes])
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# the pure-python demonstration code (on my 2010 MacBookPro) takes 5s to
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# generate a public key, 9s to sign, 14s to verify
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# the SUPERCOP-ref version we use takes 2ms for keygen, 2ms to sign, and 7ms
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# to verify
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class Basic(unittest.TestCase):
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timer = None
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def log(self, msg):
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return
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now = time.time()
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if self.timer is None:
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self.timer = now
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else:
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elapsed = now - self.timer
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self.timer = now
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print " (%f elapsed)" % elapsed
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print msg
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def test_version(self):
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# just make sure it can be retrieved
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ver = ed25519.__version__
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self.failUnless(isinstance(ver, type("")))
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def test_constants(self):
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# the secret key we get from raw.keypair() are 64 bytes long, and
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# are mostly the output of a sha512 call. The first 32 bytes are the
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# private exponent (random, with a few bits stomped).
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self.failUnlessEqual(raw.SECRETKEYBYTES, 64)
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# the public key is the encoded public point
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self.failUnlessEqual(raw.PUBLICKEYBYTES, 32)
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self.failUnlessEqual(raw.SIGNATUREKEYBYTES, 64)
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def test_raw(self):
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sk_s = "\x00" * 32 # usually urandom(32)
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vk_s, skvk_s = raw.publickey(sk_s)
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self.failUnlessEqual(len(vk_s), 32)
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exp_vks = unhexlify("3b6a27bcceb6a42d62a3a8d02a6f0d73"
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"653215771de243a63ac048a18b59da29")
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self.failUnlessEqual(vk_s, exp_vks)
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self.failUnlessEqual(skvk_s[:32], sk_s)
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self.failUnlessEqual(skvk_s[32:], vk_s)
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msg = "hello world"
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msg_and_sig = raw.sign(msg, skvk_s)
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sig = msg_and_sig[:-len(msg)]
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self.failUnlessEqual(len(sig), 64)
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exp_sig = unhexlify("b0b47780f096ae60bfff8d8e7b19c36b"
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"321ae6e69cca972f2ff987ef30f20d29"
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"774b53bae404485c4391ddf1b3f37aaa"
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"8a9747f984eb0884e8aa533386e73305")
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self.failUnlessEqual(sig, exp_sig)
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ret = raw.open(sig+msg, vk_s) # don't raise exception
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self.failUnlessEqual(ret, msg)
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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sig+msg+".. NOT!", vk_s)
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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sig+flip_bit(msg), vk_s)
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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sig+msg, flip_bit(vk_s))
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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sig+msg, flip_bit(vk_s, in_byte=2))
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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flip_bit(sig)+msg, vk_s)
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self.failUnlessRaises(raw.BadSignatureError,
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raw.open,
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flip_bit(sig, in_byte=33)+msg, vk_s)
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def test_keypair(self):
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sk, vk = ed25519.create_keypair()
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self.failUnless(isinstance(sk, ed25519.SigningKey), sk)
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self.failUnless(isinstance(vk, ed25519.VerifyingKey), vk)
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sk2, vk2 = ed25519.create_keypair()
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self.failIfEqual(hexlify(sk.to_bytes()), hexlify(sk2.to_bytes()))
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# you can control the entropy source
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def not_so_random(length):
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return "4"*length
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sk1, vk1 = ed25519.create_keypair(entropy=not_so_random)
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self.failUnlessEqual(sk1.to_ascii(encoding="base64"),
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"NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ0NDQ")
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self.failUnlessEqual(vk1.to_ascii(encoding="base64"),
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"6yzxO/euOl9hQWih+wknLTl3HsS4UjcngV5GbK+O4WM")
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sk2, vk2 = ed25519.create_keypair(entropy=not_so_random)
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self.failUnlessEqual(sk1.to_ascii(encoding="base64"),
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sk2.to_ascii(encoding="base64"))
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self.failUnlessEqual(vk1.to_ascii(encoding="base64"),
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vk2.to_ascii(encoding="base64"))
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def test_publickey(self):
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seed = unhexlify("4ba96b0b5303328c7405220598a587c4"
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"acb06ed9a9601d149f85400195f1ec3d")
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sk = ed25519.SigningKey(seed)
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self.failUnlessEqual(hexlify(sk.to_bytes()),
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("4ba96b0b5303328c7405220598a587c4"
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"acb06ed9a9601d149f85400195f1ec3d"
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"a66d161e090652b054740748f059f92a"
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"5b731f1c27b05571f6d942e4f8b7b264"))
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self.failUnlessEqual(hexlify(sk.to_seed()),
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("4ba96b0b5303328c7405220598a587c4"
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"acb06ed9a9601d149f85400195f1ec3d"))
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self.failUnlessRaises(ValueError,
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ed25519.SigningKey, "wrong length")
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sk2 = ed25519.SigningKey(seed)
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self.failUnlessEqual(sk, sk2)
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def test_OOP(self):
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sk_s = unhexlify("4ba96b0b5303328c7405220598a587c4"
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"acb06ed9a9601d149f85400195f1ec3d"
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"a66d161e090652b054740748f059f92a"
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"5b731f1c27b05571f6d942e4f8b7b264")
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sk = ed25519.SigningKey(sk_s)
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self.failUnlessEqual(len(sk.to_bytes()), 64)
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self.failUnlessEqual(sk.to_bytes(), sk_s)
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sk2_seed = unhexlify("4ba96b0b5303328c7405220598a587c4"
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"acb06ed9a9601d149f85400195f1ec3d")
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sk2 = ed25519.SigningKey(sk2_seed)
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self.failUnlessEqual(sk2.to_bytes(), sk.to_bytes())
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vk = sk.get_verifying_key()
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self.failUnlessEqual(len(vk.to_bytes()), 32)
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exp_vks = unhexlify("a66d161e090652b054740748f059f92a"
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"5b731f1c27b05571f6d942e4f8b7b264")
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self.failUnlessEqual(vk.to_bytes(), exp_vks)
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self.failUnlessEqual(ed25519.VerifyingKey(vk.to_bytes()), vk)
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msg = "hello world"
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sig = sk.sign(msg)
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self.failUnlessEqual(len(sig), 64)
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exp_sig = unhexlify("6eaffe94f2972b35158b6aaa9b69c1da"
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"97f0896aca29c41b1dd7b32e6c9e2ff6"
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"76fc8d8b034709cdcc37d8aeb86bebfb"
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"173ace3c319e211ea1d7e8d8884c1808")
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self.failUnlessEqual(sig, exp_sig)
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self.failUnlessEqual(vk.verify(sig, msg), None) # also, don't throw
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self.failUnlessRaises(ed25519.BadSignatureError,
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vk.verify, sig, msg+".. NOT!")
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def test_object_identity(self):
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sk1_s = unhexlify("ef32972ae3f1252a5aa1395347ea008c"
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"bd2fed0773a4ea45e2d2d06c8cf8fbd4"
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"c024601a9c5b854fb100ff3116cf4f22"
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"a311565f027391cb49d3bbe11c44399d")
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sk2_s = unhexlify("3d550c158900b4c2922b6656d2f80572"
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"89de4ee65043745179685ae7d29b944d"
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"672b8a2cb23f9e75e1d46ce249cd9c04"
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"68f816f1c734a102822b60e18b41eacd")
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sk1a = ed25519.SigningKey(sk1_s)
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sk1b = ed25519.SigningKey(sk1_s)
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vk1a = sk1a.get_verifying_key()
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vk1b = sk1b.get_verifying_key()
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sk2 = ed25519.SigningKey(sk2_s)
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vk2 = sk2.get_verifying_key()
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self.failUnlessEqual(sk1a, sk1b)
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self.failIfEqual(sk1a, sk2)
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self.failUnlessEqual(vk1a, vk1b)
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self.failIfEqual(vk1a, vk2)
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self.failIfEqual(sk2, "not a SigningKey")
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self.failIfEqual(vk2, "not a VerifyingKey")
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def test_prefix(self):
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sk1,vk1 = ed25519.create_keypair()
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PREFIX = "private0-"
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p = sk1.to_bytes(PREFIX)
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# that gives us a binary string with a prefix
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self.failUnless(p.startswith(PREFIX), repr(p))
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sk2 = ed25519.SigningKey(p, prefix=PREFIX)
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self.failUnlessEqual(sk1, sk2)
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self.failUnlessEqual(repr(sk1.to_bytes()), repr(sk2.to_bytes()))
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self.failUnlessRaises(ed25519.BadPrefixError,
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ed25519.SigningKey, p, prefix="WRONG-")
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# SigningKey.to_seed() can do a prefix too
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p = sk1.to_seed(PREFIX)
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self.failUnless(p.startswith(PREFIX), repr(p))
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sk3 = ed25519.SigningKey(p, prefix=PREFIX)
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self.failUnlessEqual(sk1, sk3)
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self.failUnlessEqual(repr(sk1.to_bytes()), repr(sk3.to_bytes()))
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self.failUnlessRaises(ed25519.BadPrefixError,
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ed25519.SigningKey, p, prefix="WRONG-")
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# verifying keys can do this too
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PREFIX = "public0-"
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p = vk1.to_bytes(PREFIX)
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self.failUnless(p.startswith(PREFIX), repr(p))
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vk2 = ed25519.VerifyingKey(p, prefix=PREFIX)
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self.failUnlessEqual(vk1, vk2)
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self.failUnlessEqual(repr(vk1.to_bytes()), repr(vk2.to_bytes()))
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self.failUnlessRaises(ed25519.BadPrefixError,
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ed25519.VerifyingKey, p, prefix="WRONG-")
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# and signatures
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PREFIX = "sig0-"
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p = sk1.sign("msg", PREFIX)
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self.failUnless(p.startswith(PREFIX), repr(p))
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vk1.verify(p, "msg", PREFIX)
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self.failUnlessRaises(ed25519.BadPrefixError,
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vk1.verify, p, "msg", prefix="WRONG-")
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def test_ascii(self):
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b2a = ed25519.to_ascii
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a2b = ed25519.from_ascii
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for prefix in ("", "prefix-"):
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for length in range(0, 100):
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b1 = "a"*length
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for base in ("base64", "base32", "base16", "hex"):
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a = b2a(b1, prefix, base)
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b2 = a2b(a, prefix, base)
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self.failUnlessEqual(b1, b2)
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def test_encoding(self):
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sk_s = "\x88" * 32 # usually urandom(32)
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sk1 = ed25519.SigningKey(sk_s)
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vk1 = sk1.get_verifying_key()
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def check1(encoding, expected):
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PREFIX = "private0-"
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p = sk1.to_ascii(PREFIX, encoding)
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self.failUnlessEqual(p, expected)
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sk2 = ed25519.SigningKey(p, prefix=PREFIX, encoding=encoding)
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self.failUnlessEqual(repr(sk1.to_bytes()), repr(sk2.to_bytes()))
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self.failUnlessEqual(sk1, sk2)
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check1("base64", "private0-iIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIg")
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check1("base32", "private0-rceirceirceirceirceirceirceirceirceirceirceirceircea")
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check1("hex", "private0-8888888888888888888888888888888888888888888888888888888888888888")
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def check2(encoding, expected):
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PREFIX="public0-"
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p = vk1.to_ascii(PREFIX, encoding)
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self.failUnlessEqual(p, expected)
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vk2 = ed25519.VerifyingKey(p, prefix=PREFIX, encoding=encoding)
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self.failUnlessEqual(repr(vk1.to_bytes()), repr(vk2.to_bytes()))
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self.failUnlessEqual(vk1, vk2)
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check2("base64", "public0-skkdlQKuKGMKK6yy4MdFEP/N0yjDNP8+E5PnWy0x59w")
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check2("base32", "public0-wjer3ficvyuggcrlvszobr2fcd743uziym2p6pqtsptvwljr47oa")
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check2("hex", "public0-b2491d9502ae28630a2bacb2e0c74510ffcdd328c334ff3e1393e75b2d31e7dc")
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def check3(encoding, expected):
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msg = "msg"
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PREFIX="sig0-"
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sig = sk1.sign(msg, PREFIX, encoding)
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self.failUnlessEqual(sig, expected)
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vk1.verify(sig, msg, PREFIX, encoding)
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check3("base64", "sig0-MNfdUir6tMlaYQ+/p8KANJ5d+bk8g2al76v5MeJCo6RiywxURda3sU580CyiW2FBG/Q7kDRswgYqxbkQw3o5CQ")
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check3("base32", "sig0-gdl52urk7k2mswtbb672pquagspf36nzhsbwnjppvp4tdyscuosgfsymkrc5nn5rjz6nalfclnqucg7uhoidi3gcayvmloiqyn5dsci")
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check3("hex", "sig0-30d7dd522afab4c95a610fbfa7c280349e5df9b93c8366a5efabf931e242a3a462cb0c5445d6b7b14e7cd02ca25b61411bf43b90346cc2062ac5b910c37a3909")
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if __name__ == '__main__':
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unittest.main()
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