def test_jwe_09_a3():
#Example JWE using AES Key Wrap and AES GCM
msg = "Live long and prosper."
header = '{"alg":"A128KW","enc":"A128CBC-HS256"}'
b64_header = b64e(header)
assert b64_header == "eyJhbGciOiJBMTI4S1ciLCJlbmMiOiJBMTI4Q0JDLUhTMjU2In0"
cek = intarr2str([4, 211, 31, 197, 84, 157, 252, 254, 11, 100, 157, 250,
63, 170, 106, 206, 107, 124, 212, 45, 111, 107, 9, 219,
200, 177, 0, 240, 143, 156, 44, 207])
shared_key = [25, 172, 32, 130, 225, 114, 26, 181, 138, 106, 254, 192, 95,
133, 74, 82]
jek = aes_wrap_key(intarr2str(shared_key), cek)
assert str2intarr(jek) == [
232, 160, 123, 211, 183, 76, 245, 132, 200, 128, 123, 75, 190, 216,
22, 67, 201, 138, 193, 186, 9, 91, 122, 31, 246, 90, 28, 139, 57, 3,
76, 124, 193, 11, 98, 37, 173, 61, 104, 57]
b64_jek = b64e(jek)
assert b64_jek == "6KB707dM9YTIgHtLvtgWQ8mKwboJW3of9locizkDTHzBC2IlrT1oOQ"
iv = intarr2str([3, 22, 60, 12, 43, 67, 104, 105, 108, 108, 105, 99, 111,
116, 104, 101])
b64_iv = b64e(iv)
assert b64_iv == "AxY8DCtDaGlsbGljb3RoZQ"
aadp = b64_header
assert str2intarr(aadp) == [101, 121, 74, 104, 98, 71, 99, 105, 79, 105,
74, 66, 77, 84, 73, 52, 83, 49, 99, 105, 76,
67, 74, 108, 98, 109, 77, 105, 79, 105, 74, 66,
77, 84, 73, 52, 81, 48, 74, 68, 76, 85, 104, 84,
77, 106, 85, 50, 73, 110, 48]
_jwe = JWe()
ctxt, tag, key = _jwe.enc_setup("A128CBC-HS256", msg, aadp, cek, iv=iv)
print str2intarr(ctxt)
assert str2intarr(ctxt) == [
40, 57, 83, 181, 119, 33, 133, 148, 198, 185, 243, 24, 152, 230, 6,
75, 129, 223, 127, 19, 210, 82, 183, 230, 168, 33, 215, 104, 143,
112, 56, 102]
assert str2intarr(tag) == [83, 73, 191, 98, 104, 205, 211, 128, 201, 189,
199, 133, 32, 38, 194, 85]
enc_cipher_text = b64e(ctxt)
assert enc_cipher_text == "KDlTtXchhZTGufMYmOYGS4HffxPSUrfmqCHXaI9wOGY"
enc_authn_tag = b64e(tag)
assert enc_authn_tag == "U0m_YmjN04DJvceFICbCVQ"
def test_a_1_1c():
hmac = jwkest.intarr2bin(HMAC_KEY)
signer = SIGNER_ALGS["HS256"]
header = b'{"typ":"JWT",\r\n "alg":"HS256"}'
payload = b'{"iss":"joe",\r\n "exp":1300819380,\r\n "http://example.com/is_root":true}'
sign_input = b64e(header) + b'.' + b64e(payload)
sig = signer.sign(sign_input, hmac)
assert b64e(sig) == b'dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk'
def test_a_1_1c():
hmac = jwkest.intarr2bin(HMAC_KEY)
signer = SIGNER_ALGS["HS256"]
header = '{"typ":"JWT",\r\n "alg":"HS256"}'
payload = '{"iss":"joe",\r\n "exp":1300819380,\r\n "http://example.com/is_root":true}'
sign_input = b64e(header) + '.' + b64e(payload)
sig = signer.sign(sign_input, hmac)
assert b64e(sig) == "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk"
def left_hash(msg, func="HS256"):
""" 128 bits == 16 bytes """
if func == 'HS256':
return b64e(sha256_digest(msg)[:16])
elif func == 'HS384':
return b64e(sha384_digest(msg)[:24])
elif func == 'HS512':
return b64e(sha512_digest(msg)[:32])
def pack(b64_header, jek, iv, ctxt, tag):
res = b'.'.join(
[b64_header,
b64e(jek), b64e(iv),
b64e(ctxt),
b64e(tag)])
return res
def left_hash(msg, func="HS256"):
""" 128 bits == 16 bytes """
if func == 'HS256':
return as_unicode(b64e(sha256_digest(msg)[:16]))
elif func == 'HS384':
return as_unicode(b64e(sha384_digest(msg)[:24]))
elif func == 'HS512':
return as_unicode(b64e(sha512_digest(msg)[:32]))
def b64encode_item(item):
if isinstance(item, bytes):
return b64e(item)
elif isinstance(item, str):
return b64e(item.encode("utf-8"))
elif isinstance(item, int):
return b64e(item)
else:
return b64e(
json.dumps(b2s_conv(item), separators=(",", ":")).encode("utf-8"))
def b64encode_item(item):
if isinstance(item, bytes):
return b64e(item)
elif isinstance(item, str):
return b64e(item.encode("utf-8"))
elif isinstance(item, int):
return b64e(item)
else:
return b64e(json.dumps(b2s_conv(item),
separators=(",", ":")).encode("utf-8"))
def test_a_1_1b():
payload = b'{"iss":"joe",\r\n "exp":1300819380,' \
b'\r\n "http://example.com/is_root":true}'
val = b64e(payload)
assert val == (
b'eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9'
b'leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ')
def encryption_key(self, alg, **kwargs):
"""
Return an encryption key as per
http://openid.net/specs/openid-connect-core-1_0.html#Encryption
:param alg: encryption algorithm
:param kwargs:
:return: encryption key as byte string
"""
if not self.key:
self.deserialize()
tsize = ALG2KEYLEN[alg]
#_keylen = len(self.key)
if tsize <= 32:
# SHA256
_enc_key = sha256_digest(self.key)[:tsize]
elif tsize <= 48:
# SHA384
_enc_key = sha384_digest(self.key)[:tsize]
elif tsize <= 64:
# SHA512
_enc_key = sha512_digest(self.key)[:tsize]
else:
raise JWKException("No support for symmetric keys > 512 bits")
logger.debug('Symmetric encryption key: {}'.format(
as_unicode(b64e(_enc_key))))
return _enc_key
def test_client_secret_jwt(self, client):
client.token_endpoint = "https://example.com/token"
client.provider_info = {
'issuer': 'https://example.com/',
'token_endpoint': "https://example.com/token"
}
csj = ClientSecretJWT(client)
cis = AccessTokenRequest()
csj.construct(cis, algorithm="HS256", authn_endpoint='userinfo')
assert cis["client_assertion_type"] == JWT_BEARER
assert "client_assertion" in cis
cas = cis["client_assertion"]
_jwt = JWT().unpack(cas)
jso = _jwt.payload()
assert _eq(jso.keys(), ["aud", "iss", "sub", "jti", "exp", "iat"])
assert _jwt.headers == {'alg': 'HS256'}
_rj = JWS()
info = _rj.verify_compact(
cas, [SYMKey(k=b64e(as_bytes(client.client_secret)))])
assert _eq(info.keys(), ["aud", "iss", "sub", "jti", "exp", "iat"])
assert info['aud'] == [client.provider_info['issuer']]
def add_code_challenge(self):
"""
PKCE RFC 7636 support.
:return:
"""
try:
cv_len = self.config["code_challenge"]["length"]
except KeyError:
cv_len = 64 # Use default
code_verifier = unreserved(cv_len)
_cv = code_verifier.encode("ascii")
try:
_method = self.config["code_challenge"]["method"]
except KeyError:
_method = "S256"
try:
_h = CC_METHOD[_method](_cv).digest()
code_challenge = b64e(_h).decode("ascii")
except KeyError:
raise Unsupported("PKCE Transformation method:{}".format(_method))
# TODO store code_verifier
return (
{"code_challenge": code_challenge, "code_challenge_method": _method},
code_verifier,
)
def sign_compact(self, keys=None):
"""
Produce a JWS using the JWS Compact Serialization
:param keys: A dictionary of keys
:return:
"""
enc_head = self._encoded_header()
enc_payload = self._encoded_payload()
_alg = self["alg"]
if not _alg or _alg.lower() == "none":
return enc_head + b"." + enc_payload + b"."
try:
_signer = SIGNER_ALGS[_alg]
except KeyError:
raise UnknownAlgorithm(_alg)
if keys:
keys = self._pick_keys(keys, use="sig")
else:
keys = self._pick_keys(self._get_keys())
if keys:
key = keys[0]
else:
raise NoSuitableSigningKeys(_alg)
_input = b".".join([enc_head, enc_payload])
sig = _signer.sign(_input, key.get_key(private=True))
return b".".join([enc_head, enc_payload, b64e(sig)])
def add_code_challenge(self):
"""
PKCE RFC 7636 support
:return:
"""
try:
cv_len = self.config['code_challenge']['length']
except KeyError:
cv_len = 64 # Use default
code_verifier = unreserved(cv_len)
_cv = code_verifier.encode()
try:
_method = self.config['code_challenge']['method']
except KeyError:
_method = 'S256'
try:
_h = CC_METHOD[_method](_cv).hexdigest()
code_challenge = b64e(_h.encode()).decode()
except KeyError:
raise Unsupported('PKCE Transformation method:{}'.format(_method))
# TODO store code_verifier
return {
"code_challenge": code_challenge,
"code_challenge_method": _method
}, code_verifier
def add_code_challenge(self):
try:
cv_len = self.config['code_challenge']['length']
except KeyError:
cv_len = 64 # Use default
code_verifier = unreserved(cv_len)
_cv = code_verifier.encode()
try:
_method = self.config['code_challenge']['method']
except KeyError:
_method = 'S256'
try:
_h = CC_METHOD[_method](_cv).hexdigest()
code_challenge = b64e(_h.encode()).decode()
except KeyError:
raise Unsupported(
'PKCE Transformation method:{}'.format(_method))
# TODO store code_verifier
return {"code_challenge": code_challenge,
"code_challenge_method": _method}, code_verifier
def test_a_1_1b():
payload = b'{"iss":"joe",\r\n "exp":1300819380,' \
b'\r\n "http://example.com/is_root":true}'
val = b64e(payload)
assert val == (
b'eyJpc3MiOiJqb2UiLA0KICJleHAiOjEzMDA4MTkzODAsDQogImh0dHA6Ly9'
b'leGFtcGxlLmNvbS9pc19yb290Ijp0cnVlfQ')
def encryption_key(self, alg, **kwargs):
"""
Return an encryption key as per
http://openid.net/specs/openid-connect-core-1_0.html#Encryption
:param alg: encryption algorithm
:param kwargs:
:return: encryption key as byte string
"""
if not self.key:
self.deserialize()
tsize = ALG2KEYLEN[alg]
# _keylen = len(self.key)
if tsize <= 32:
# SHA256
_enc_key = sha256_digest(self.key)[:tsize]
elif tsize <= 48:
# SHA384
_enc_key = sha384_digest(self.key)[:tsize]
elif tsize <= 64:
# SHA512
_enc_key = sha512_digest(self.key)[:tsize]
else:
raise JWKException("No support for symmetric keys > 512 bits")
logger.debug('Symmetric encryption key: {}'.format(
as_unicode(b64e(_enc_key))))
return _enc_key
def sign_compact(self, keys=None):
"""
Produce a JWS using the JWS Compact Serialization
:param keys: A dictionary of keys
:return:
"""
enc_head = self._encoded_header()
enc_payload = self._encoded_payload()
_alg = self["alg"]
if not _alg or _alg.lower() == "none":
return enc_head + b"." + enc_payload + b"."
try:
_signer = SIGNER_ALGS[_alg]
except KeyError:
raise UnknownAlgorithm(_alg)
if keys:
keys = self._pick_keys(keys)
else:
keys = self._pick_keys(self._get_keys())
if keys:
key = keys[0]
else:
raise NoSuitableSigningKeys(_alg)
_input = b".".join([enc_head, enc_payload])
sig = _signer.sign(_input, key.key)
return b".".join([enc_head, enc_payload, b64e(sig)])
def enc_setup(self, msg, auth_data, key=None, **kwargs):
encrypted_key = ""
# Generate the input parameters
try:
apu = b64d(kwargs["apu"])
except KeyError:
apu = b64d(Random.get_random_bytes(16))
try:
apv = b64d(kwargs["apv"])
except KeyError:
apv = b64d(Random.get_random_bytes(16))
# Generate an ephemeral key pair
curve = NISTEllipticCurve.by_name(key.crv)
if "epk" in kwargs:
epk = ECKey(key=kwargs["epk"], private=False)
eprivk = ECKey(kwargs["epk"], private=True)
else:
(eprivk, epk) = curve.key_pair()
# Derive the KEK and encrypt
params = {
"apu": b64e(apu),
"apv": b64e(apv),
#"epk": exportKey(epk, "EC", curve)
}
cek, iv = self._generate_key_and_iv(self.enc)
if self.alg == "ECDH-ES":
try:
dk_len = KEYLEN[self.enc]
except KeyError:
raise Exception("Unknown key length for algorithm %s" %
self.enc)
cek = ecdh_derive_key(curve, eprivk, key, apu, apv, self.enc,
dk_len)
elif self.alg in [
"ECDH-ES+A128KW", "ECDH-ES+A192KW", "ECDH-ES+A256KW"
]:
_pre, _post = self.alg.split("+")
klen = int(_post[1:4])
kek = ecdh_derive_key(curve, eprivk, key, apu, apv, _post, klen)
encrypted_key = aes_wrap_key(kek, cek)
else:
raise Exception("Unsupported algorithm %s" % self.alg)
return cek, encrypted_key, iv, params
def party_value(pv):
if pv:
s = b64e(pv)
r = int2bigendian(len(s))
r.extend(s)
return r
else:
return [0, 0, 0, 0]
def store_key(self, key):
kb = KeyBundle()
kb.do_keys([key])
# Store key with thumbprint as key
key_thumbprint = b64e(kb.keys()[0].thumbprint("SHA-256")).decode("utf8")
self.thumbprint2key[key_thumbprint] = key
return key_thumbprint
def build_keyjar(key_conf, kid_template="", keyjar=None, kidd=None):
"""
Configuration of the type:
keys = [
{"type": "RSA", "key": "cp_keys/key.pem", "use": ["enc", "sig"]},
{"type": "EC", "crv": "P-256", "use": ["sig"]},
{"type": "EC", "crv": "P-256", "use": ["enc"]}
]
:param key_conf: The key configuration
:param kid_template: A template by which to build the kids
:return: a tuple consisting of a JWKS dictionary, a KeyJar instance
and a representation of which kids that can be used for what.
Note the JWKS contains private key information !!
"""
if keyjar is None:
keyjar = KeyJar()
if kidd is None:
kidd = {"sig": {}, "enc": {}}
kid = 0
jwks = {"keys": []}
for spec in key_conf:
typ = spec["type"].upper()
if typ == "RSA":
if "key" in spec:
try:
kb = KeyBundle(source="file://%s" % spec["key"],
fileformat="der",
keytype=typ,
keyusage=spec["use"])
except FileNotFoundError:
if 'name' not in spec:
spec['name'] = spec['key']
kb = rsa_init(spec)
else:
kb = rsa_init(spec)
elif typ == "EC":
kb = ec_init(spec)
for k in kb.keys():
if kid_template:
k.kid = kid_template % kid
kid += 1
else:
k.kid = b64e(k.thumbprint('SHA-256')).decode('utf8')
kidd[k.use][k.kty] = k.kid
jwks["keys"].extend(
[k.serialize() for k in kb.keys() if k.kty != 'oct'])
keyjar.add_kb("", kb)
return jwks, keyjar, kidd
def enc_setup(self, msg, auth_data, key=None, **kwargs):
encrypted_key = ""
# Generate the input parameters
try:
apu = b64d(kwargs["apu"])
except KeyError:
apu = b64d(Random.get_random_bytes(16))
try:
apv = b64d(kwargs["apv"])
except KeyError:
apv = b64d(Random.get_random_bytes(16))
# Generate an ephemeral key pair
curve = NISTEllipticCurve.by_name(key.crv)
if "epk" in kwargs:
epk = ECKey(key=kwargs["epk"], private=False)
eprivk = ECKey(kwargs["epk"], private=True)
else:
(eprivk, epk) = curve.key_pair()
# Derive the KEK and encrypt
params = {
"apu": b64e(apu),
"apv": b64e(apv),
#"epk": exportKey(epk, "EC", curve)
}
cek, iv = self._generate_key_and_iv(self.enc)
if self.alg == "ECDH-ES":
try:
dk_len = KEYLEN[self.enc]
except KeyError:
raise Exception(
"Unknown key length for algorithm %s" % self.enc)
cek = ecdh_derive_key(curve, eprivk, key, apu, apv, self.enc,
dk_len)
elif self.alg in ["ECDH-ES+A128KW", "ECDH-ES+A192KW", "ECDH-ES+A256KW"]:
_pre, _post = self.alg.split("+")
klen = int(_post[1:4])
kek = ecdh_derive_key(curve, eprivk, key, apu, apv, _post, klen)
encrypted_key = aes_wrap_key(kek, cek)
else:
raise Exception("Unsupported algorithm %s" % self.alg)
return cek, encrypted_key, iv, params
def build_keyjar(key_conf, kid_template="", keyjar=None, kidd=None):
"""
Configuration of the type:
keys = [
{"type": "RSA", "key": "cp_keys/key.pem", "use": ["enc", "sig"]},
{"type": "EC", "crv": "P-256", "use": ["sig"]},
{"type": "EC", "crv": "P-256", "use": ["enc"]}
]
:param key_conf: The key configuration
:param kid_template: A template by which to build the kids
:return: a tuple consisting of a JWKS dictionary, a KeyJar instance
and a representation of which kids that can be used for what.
Note the JWKS contains private key information !!
"""
if keyjar is None:
keyjar = KeyJar()
if kidd is None:
kidd = {"sig": {}, "enc": {}}
kid = 0
jwks = {"keys": []}
for spec in key_conf:
typ = spec["type"].upper()
if typ == "RSA":
if "key" in spec:
try:
kb = KeyBundle(source="file://%s" % spec["key"],
fileformat="der",
keytype=typ, keyusage=spec["use"])
except FileNotFoundError:
if 'name' not in spec:
spec['name'] = spec['key']
kb = rsa_init(spec)
else:
kb = rsa_init(spec)
elif typ == "EC":
kb = ec_init(spec)
for k in kb.keys():
if kid_template:
k.kid = kid_template % kid
kid += 1
else:
k.kid = b64e(k.thumbprint('SHA-256')).decode('utf8')
kidd[k.use][k.kty] = k.kid
jwks["keys"].extend(
[k.serialize() for k in kb.keys() if k.kty != 'oct'])
keyjar.add_kb("", kb)
return jwks, keyjar, kidd
def store_key(self, key):
kb = KeyBundle()
kb.do_keys([key])
# Store key with thumbprint as key
key_thumbprint = b64e(kb.keys()[0].thumbprint('SHA-256')).decode(
'utf8')
self.thumbprint2key[key_thumbprint] = key
return key_thumbprint
def test_thumbprint_7638_example():
key = RSAKey(
n="0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMstn64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbISD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqbw0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw",
e="AQAB",
alg="RS256",
kid="2011-04-29",
)
thumbprint = key.thumbprint("SHA-256")
assert b64e(thumbprint) == b"NzbLsXh8uDCcd-6MNwXF4W_7noWXFZAfHkxZsRGC9Xs"
def test_thumbprint_7638_example():
key = RSAKey(
n=
'0vx7agoebGcQSuuPiLJXZptN9nndrQmbXEps2aiAFbWhM78LhWx4cbbfAAtVT86zwu1RK7aPFFxuhDR1L6tSoc_BJECPebWKRXjBZCiFV4n3oknjhMstn64tZ_2W-5JsGY4Hc5n9yBXArwl93lqt7_RN5w6Cf0h4QyQ5v-65YGjQR0_FDW2QvzqY368QQMicAtaSqzs8KJZgnYb9c7d0zgdAZHzu6qMQvRL5hajrn1n91CbOpbISD08qNLyrdkt-bFTWhAI4vMQFh6WeZu0fM4lFd2NcRwr3XPksINHaQ-G_xBniIqbw0Ls1jF44-csFCur-kEgU8awapJzKnqDKgw',
e='AQAB',
alg='RS256',
kid='2011-04-29')
thumbprint = key.thumbprint('SHA-256')
assert b64e(thumbprint) == b'NzbLsXh8uDCcd-6MNwXF4W_7noWXFZAfHkxZsRGC9Xs'
def add_symmetric(self, issuer, key, usage=None):
if issuer not in self.issuer_keys:
self.issuer_keys[issuer] = []
_key = b64e(as_bytes(key))
if usage is None:
self.issuer_keys[issuer].append(self.keybundle_cls([{"kty": "oct", "k": _key}]))
else:
for use in usage:
self.issuer_keys[issuer].append(self.keybundle_cls([{"kty": "oct", "k": _key, "use": use}]))
def sign_compact(self, keys=None):
"""
Produce a JWS using the JWS Compact Serialization
:param keys: A dictionary of keys
:return:
"""
try:
_alg = self["alg"]
except KeyError:
self["alg"] = _alg = "none"
else:
if not _alg:
self["alg"] = _alg = "none"
if keys:
keys = self._pick_keys(keys, use="sig", alg=_alg)
else:
keys = self._pick_keys(self._get_keys(), use="sig", alg=_alg)
xargs = {}
if keys:
key = keys[0]
if key.kid:
xargs = {"kid": key.kid}
elif not _alg or _alg.lower() == "none":
key = None
else:
if "kid" in self:
raise NoSuitableSigningKeys(
"No key for algorithm: %s with kid: %s" %
(_alg, self["kid"]))
else:
raise NoSuitableSigningKeys("No key for algorithm: %s" % _alg)
enc_head = self._encoded_header(xargs)
enc_payload = self._encoded_payload()
# Signing with alg == "none"
if not _alg or _alg.lower() == "none":
return enc_head + b"." + enc_payload + b"."
# All other cases
try:
_signer = SIGNER_ALGS[_alg]
except KeyError:
raise UnknownAlgorithm(_alg)
_input = b".".join([enc_head, enc_payload])
sig = _signer.sign(_input, key.get_key(alg=_alg, private=True))
logger.debug("Signed message using key with kid=%s" % key.kid)
return b".".join([enc_head, enc_payload, b64e(sig)])
def encrypt(self, key, iv="", cek=""):
"""
:param key: Shared symmetric key
:param iv:
:param cek:
:return:
"""
_msg = self.msg
b64_header = self._encoded_header()
# content master key 256 bit
if not cek:
cek = os.urandom(32)
jek = aes_wrap_key(intarr2str(key), cek)
auth_data = b64_header
_enc = self["enc"]
if _enc == "A256GCM":
if not iv:
iv = os.urandom(12) # 96 bits
ctxt, tag = gcm_encrypt(cek, iv, _msg, auth_data)
elif _enc.startswith("A128CBC-") or _enc.startswith("A256CBC-"):
assert _enc in SUPPORTED["enc"]
ealg, hashf = _enc.split("-")
if not iv:
if ealg == "A128CBC":
iv = os.urandom(16) # 128 bits
else: # ealg == "A256CBC"
iv = os.urandom(32) # 256 bits
ctxt, tag = ciphertext_and_authentication_tag(cek, _msg, auth_data, iv, algo="A128CBC-HS256")
else:
raise NotSupportedAlgorithm(_enc)
res = b".".join([b64_header, b64e(jek), b64e(iv), b64e(ctxt), b64e(tag)])
return res
def test_encryption_key():
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A128KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWBw'
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A192KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWB14GQqHAGC86'
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A256KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWB14GQqHAGC86vweU_Pi62X8'
ek = sha256_digest(
'YzE0MjgzNmRlODI5Yzg2MGYyZTRjNGE0NTZlMzBkZDRiNzJkNDA5MzUzNjM0ODkzM2E2MDk3ZWY'
)[:16]
assert as_unicode(b64e(ek)) == 'yf_UUkAFZ8Pn_prxPPgu9w'
sk = SYMKey(
key=
'YzE0MjgzNmRlODI5Yzg2MGYyZTRjNGE0NTZlMzBkZDRiNzJkNDA5MzUzNjM0ODkzM2E2MDk3ZWY'
)
_enc = sk.encryption_key(alg='A128KW')
_v = as_unicode(b64e(_enc))
assert _v == as_unicode(b64e(ek))
def test_encryption_key():
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A128KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWBw'
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A192KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWB14GQqHAGC86'
sk = SYMKey(key='df34db91c16613deba460752522d28f6ebc8a73d0d9185836270c26b')
_enc = sk.encryption_key(alg='A256KW')
_v = as_unicode(b64e(_enc))
assert _v == 'xCo9VhtommCTGMWi-RyWB14GQqHAGC86vweU_Pi62X8'
ek = sha256_digest(
'YzE0MjgzNmRlODI5Yzg2MGYyZTRjNGE0NTZlMzBkZDRiNzJkNDA5MzUzNjM0ODkzM2E2MDk3ZWY')[
:16]
assert as_unicode(b64e(ek)) == 'yf_UUkAFZ8Pn_prxPPgu9w'
sk = SYMKey(
key='YzE0MjgzNmRlODI5Yzg2MGYyZTRjNGE0NTZlMzBkZDRiNzJkNDA5MzUzNjM0ODkzM2E2MDk3ZWY')
_enc = sk.encryption_key(alg='A128KW')
_v = as_unicode(b64e(_enc))
assert _v == as_unicode(b64e(ek))
def test_sign_json_hs256():
payload = "Please take a moment to register today"
keys = [SYMKey(key=jwkest.intarr2bin(HMAC_KEY))]
_jws = JWS(payload, alg="HS256")
_sig = {'alg': 'HS256'}
_jwt = _jws.sign_json(per_signature_head=[_sig], keys=keys, alg='HS256')
_jwt_sig = "%s.%s.%s" % (_jwt['signatures'][0]['header'],
b64e(_jwt['payload']),
_jwt['signatures'][0]['signature'])
info = _jws.verify_compact(_jwt_sig, keys)
assert info == payload
def add_symmetric(self, issuer, key, usage=None):
if issuer not in self.issuer_keys:
self.issuer_keys[issuer] = []
_key = b64e(as_bytes(key))
if usage is None:
self.issuer_keys[issuer].append(
self.keybundle_cls([{"kty": "oct", "k": _key}]))
else:
for use in usage:
self.issuer_keys[issuer].append(
self.keybundle_cls([{"kty": "oct",
"k": _key,
"use": use}]))
def test_sign_json_hs256():
payload = "Please take a moment to register today"
keys = [SYMKey(key=jwkest.intarr2bin(HMAC_KEY))]
_jws = JWS(payload, alg="HS256")
_sig = {
'alg': 'HS256'
}
_jwt = _jws.sign_json(per_signature_head=[_sig], keys=keys, alg='HS256')
_jwt_sig = "%s.%s.%s" % ( _jwt['signatures'][0]['header'],
b64e(_jwt['payload']),
_jwt['signatures'][0]['signature'] )
info = _jws.verify_compact(_jwt_sig, keys)
assert info == payload
def modified_idtoken_hint(oper, arg):
"""
Context:
EndSession
Action:
Sets the 'id_token_hint' argument in a end_session request.
The value of the argument is a incorrect signed JWT.
Example:
"create_idtoken_hint_other_issuer": null
"""
res = get_signed_id_tokens(oper.conv)
if res:
_jws = jws_factory(res[-1])
header = as_unicode(b64e(as_bytes(json.dumps({'alg': 'none'}))))
oper.req_args["id_token_hint"] = '.'.join(
[header, as_unicode(_jws.jwt.b64part[1]), ''])
def sign_compact(self, keys=None):
"""
Produce a JWS using the JWS Compact Serialization
:param keys: A dictionary of keys
:return:
"""
_alg = self["alg"]
if keys:
keys = self._pick_keys(keys, use="sig", alg=_alg)
else:
keys = self._pick_keys(self._get_keys(), use="sig", alg=_alg)
xargs = {}
if keys:
key = keys[0]
if key.kid:
xargs = {"kid": key.kid}
elif _alg == "none":
key = None
elif _alg:
raise NoSuitableSigningKeys(_alg)
else:
raise NoSuitableSigningKeys("None")
enc_head = self._encoded_header(xargs)
enc_payload = self._encoded_payload()
# Signing with alg == "none"
if not _alg or _alg.lower() == "none":
return enc_head + b"." + enc_payload + b"."
# All other cases
try:
_signer = SIGNER_ALGS[_alg]
except KeyError:
raise UnknownAlgorithm(_alg)
_input = b".".join([enc_head, enc_payload])
sig = _signer.sign(_input, key.get_key(alg=_alg, private=True))
logger.debug("Signed message using key with kid=%s" % key.kid)
return b".".join([enc_head, enc_payload, b64e(sig)])
def verify_code_challenge(
code_verifier, code_challenge, code_challenge_method="S256"
):
"""
Verify a PKCE (RFC7636) code challenge.
:param code_verifier: The origin
:param code_challenge: The transformed verifier used as challenge
:return:
"""
_h = CC_METHOD[code_challenge_method](code_verifier.encode("ascii")).digest()
_cc = b64e(_h)
if _cc.decode("ascii") != code_challenge:
logger.error("PCKE Code Challenge check failed")
err = TokenErrorResponse(
error="invalid_request", error_description="PCKE check failed"
)
return Response(err.to_json(), content="application/json", status_code=401)
return True
def verify_code_challenge(code_verifier, code_challenge,
code_challenge_method='S256'):
"""
Verify a PKCE (RFC7636) code challenge
:param code_verifier: The origin
:param code_challenge: The transformed verifier used as challenge
:return:
"""
_h = CC_METHOD[code_challenge_method](
code_verifier.encode()).hexdigest()
_cc = b64e(_h.encode())
if _cc.decode() != code_challenge:
logger.error('PCKE Code Challenge check failed')
err = TokenErrorResponse(error="invalid_request",
error_description="PCKE check failed")
return Response(err.to_json(), content="application/json",
status="401 Unauthorized")
return True
def test_client_secret_jwt(self, client):
client.token_endpoint = "https://example.com/token"
client.provider_info = {'issuer': 'https://example.com/',
'token_endpoint': "https://example.com/token"}
csj = ClientSecretJWT(client)
cis = AccessTokenRequest()
csj.construct(cis, algorithm="HS256",
authn_endpoint='userinfo')
assert cis["client_assertion_type"] == JWT_BEARER
assert "client_assertion" in cis
cas = cis["client_assertion"]
_jwt = JWT().unpack(cas)
jso = _jwt.payload()
assert _eq(jso.keys(), ["aud", "iss", "sub", "jti", "exp", "iat"])
assert _jwt.headers == {'alg': 'HS256'}
_rj = JWS()
info = _rj.verify_compact(
cas, [SYMKey(k=b64e(as_bytes(client.client_secret)))])
assert _eq(info.keys(), ["aud", "iss", "sub", "jti", "exp", "iat"])
assert info['aud'] == [client.provider_info['issuer']]
def add_symmetric(self, owner, key, usage=None):
"""
Add a symmetric key. This is done by wrapping it in a key bundle
cloak since KeyJar does not handle keys directly but only through
key bundles.
:param issuer: Owner of the key
:param key: The key
:param usage: What the key can be used for signing/signature
verification (sig) and/or encryption/decryption (enc)
"""
if owner not in self.issuer_keys:
self.issuer_keys[owner] = []
_key = b64e(as_bytes(key))
if usage is None:
self.issuer_keys[owner].append(
self.keybundle_cls([{"kty": "oct", "k": _key}]))
else:
for use in usage:
self.issuer_keys[owner].append(
self.keybundle_cls([{"kty": "oct",
"k": _key,
"use": use}]))
def serialize(self, private=True):
res = self.common()
res["k"] = as_unicode(b64e(bytes(self.key)))
return res
def add_kid(self):
self.kid = b64e(self.thumbprint('SHA-256')).decode('utf8')
def test_thumbprint():
keyl = KEYS()
keyl.load_dict(JWKS)
for key in keyl:
txt = key.thumbprint("SHA-256")
assert b64e(txt) in EXPECTED
from jwkest import b64e
import json
# A specific JWT is a sequence of URL-safe parts separated by a period '.' character.
# All JWT parts are always base64 encoded. A JWT can have different claims (similar to attributes in LDAP world):
# - iss (Issuer) who issued the token
# - sub (Subject) who is described by the token
# - aud (Audience) who the token intended for
# - exp (Expiration Time)
# - nbf (Not Before)
# - iat (Issued At)
# - jti (JWT Id)
#
# An unsecured JWT is the simplest JWT possible. It can be created as follow:
# - create a JOSE header (the simplest possible has only the "alg" specification set to "none")
# - create a claims set (which means create a JSON object)
# - base64 encode the claims set (message and header) and encode them in UTF-8
# - create the JWS by joining the claims set with the period '.' character as a separator
header = {"alg": "none"}
htxt = json.dumps(header)
hdr = b64e(htxt)
claims_set = {"foo": "bar"}
txt = json.dumps(claims_set)
msg = b64e(txt)
jws = ".".join([hdr, msg, ""])
print "jwt:", jws
def test_jwe_09_a3():
#Example JWE using AES Key Wrap and AES GCM
msg = b'Live long and prosper.'
header = b'{"alg":"A128KW","enc":"A128CBC-HS256"}'
b64_header = b64e(header)
assert b64_header == b'eyJhbGciOiJBMTI4S1ciLCJlbmMiOiJBMTI4Q0JDLUhTMjU2In0'
cek = intarr2bytes([
4, 211, 31, 197, 84, 157, 252, 254, 11, 100, 157, 250, 63, 170, 106,
206, 107, 124, 212, 45, 111, 107, 9, 219, 200, 177, 0, 240, 143, 156,
44, 207
])
shared_key = [
25, 172, 32, 130, 225, 114, 26, 181, 138, 106, 254, 192, 95, 133, 74,
82
]
jek = aes_wrap_key(intarr2bytes(shared_key), cek)
assert to_intarr(jek) == [
232, 160, 123, 211, 183, 76, 245, 132, 200, 128, 123, 75, 190, 216, 22,
67, 201, 138, 193, 186, 9, 91, 122, 31, 246, 90, 28, 139, 57, 3, 76,
124, 193, 11, 98, 37, 173, 61, 104, 57
]
b64_jek = b64e(jek)
assert b64_jek == b'6KB707dM9YTIgHtLvtgWQ8mKwboJW3of9locizkDTHzBC2IlrT1oOQ'
iv = intarr2bytes([
3, 22, 60, 12, 43, 67, 104, 105, 108, 108, 105, 99, 111, 116, 104, 101
])
b64_iv = b64e(iv)
assert b64_iv == b'AxY8DCtDaGlsbGljb3RoZQ'
aadp = b64_header
assert to_intarr(aadp) == [
101, 121, 74, 104, 98, 71, 99, 105, 79, 105, 74, 66, 77, 84, 73, 52,
83, 49, 99, 105, 76, 67, 74, 108, 98, 109, 77, 105, 79, 105, 74, 66,
77, 84, 73, 52, 81, 48, 74, 68, 76, 85, 104, 84, 77, 106, 85, 50, 73,
110, 48
]
_jwe = JWe()
ctxt, tag, key = _jwe.enc_setup("A128CBC-HS256", msg, aadp, cek, iv=iv)
print(to_intarr(ctxt))
assert to_intarr(ctxt) == [
40, 57, 83, 181, 119, 33, 133, 148, 198, 185, 243, 24, 152, 230, 6, 75,
129, 223, 127, 19, 210, 82, 183, 230, 168, 33, 215, 104, 143, 112, 56,
102
]
assert to_intarr(tag) == [
83, 73, 191, 98, 104, 205, 211, 128, 201, 189, 199, 133, 32, 38, 194,
85
]
enc_cipher_text = b64e(ctxt)
assert enc_cipher_text == b'KDlTtXchhZTGufMYmOYGS4HffxPSUrfmqCHXaI9wOGY'
enc_authn_tag = b64e(tag)
assert enc_authn_tag == b'U0m_YmjN04DJvceFICbCVQ'
def test_b64_encode_decode():
data = "abcd".encode("utf-8")
assert b64d(b64e(data)) == data
def serialize(self):
res = self.common()
res["k"] = b64e(bytes(self.key))
return res
def test_a_1_1a():
header = '{"typ":"JWT",\r\n "alg":"HS256"}'
val = b64e(header)
assert val == "eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9"
def serialize(self):
self.k = b64e(str(self.key))
def test_jwe_09_a1():
# RSAES OAEP and AES GCM
msg = b"The true sign of intelligence is not knowledge but imagination."
# A.1.1
header = b'{"alg":"RSA-OAEP","enc":"A256GCM"}'
b64_header = b64e(header)
# A.1.2
assert b64_header == b"eyJhbGciOiJSU0EtT0FFUCIsImVuYyI6IkEyNTZHQ00ifQ"
# A.1.3
cek = intarr2long([
177, 161, 244, 128, 84, 143, 225, 115, 63, 180, 3, 255, 107, 154, 212,
246, 138, 7, 110, 91, 112, 46, 34, 105, 47, 130, 203, 46, 122, 234, 64,
252
])
# A.1.4 Key Encryption
enc_key = [
56, 163, 154, 192, 58, 53, 222, 4, 105, 218, 136, 218, 29, 94, 203, 22,
150, 92, 129, 94, 211, 232, 53, 89, 41, 60, 138, 56, 196, 216, 82, 98,
168, 76, 37, 73, 70, 7, 36, 8, 191, 100, 136, 196, 244, 220, 145, 158,
138, 155, 4, 117, 141, 230, 199, 247, 173, 45, 182, 214, 74, 177, 107,
211, 153, 11, 205, 196, 171, 226, 162, 128, 171, 182, 13, 237, 239, 99,
193, 4, 91, 219, 121, 223, 107, 167, 61, 119, 228, 173, 156, 137, 134,
200, 80, 219, 74, 253, 56, 185, 91, 177, 34, 158, 89, 154, 205, 96, 55,
18, 138, 43, 96, 218, 215, 128, 124, 75, 138, 243, 85, 25, 109, 117,
140, 26, 155, 249, 67, 167, 149, 231, 100, 6, 41, 65, 214, 251, 232,
87, 72, 40, 182, 149, 154, 168, 31, 193, 126, 215, 89, 28, 111, 219,
125, 182, 139, 235, 195, 197, 23, 234, 55, 58, 63, 180, 68, 202, 206,
149, 75, 205, 248, 176, 67, 39, 178, 60, 98, 193, 32, 238, 122, 96,
158, 222, 57, 183, 111, 210, 55, 188, 215, 206, 180, 166, 150, 166,
106, 250, 55, 229, 72, 40, 69, 214, 216, 104, 23, 40, 135, 212, 28,
127, 41, 80, 175, 174, 168, 115, 171, 197, 89, 116, 92, 103, 246, 83,
216, 182, 176, 84, 37, 147, 35, 45, 219, 172, 99, 226, 233, 73, 37,
124, 42, 72, 49, 242, 35, 127, 184, 134, 117, 114, 135, 206
]
b64_ejek = b'ApfOLCaDbqs_JXPYy2I937v_xmrzj-Iss1mG6NAHmeJViM6j2l0MHvfseIdHVyU2BIoGVu9ohvkkWiRq5DL2jYZTPA9TAdwq3FUIVyoH-Pedf6elHIVFi2KGDEspYMtQARMMSBcS7pslx6flh1Cfh3GBKysztVMEhZ_maFkm4PYVCsJsvq6Ct3fg2CJPOs0X1DHuxZKoIGIqcbeK4XEO5a0h5TAuJObKdfO0dKwfNSSbpu5sFrpRFwV2FTTYoqF4zI46N9-_hMIznlEpftRXhScEJuZ9HG8C8CHB1WRZ_J48PleqdhF4o7fB5J1wFqUXBtbtuGJ_A2Xe6AEhrlzCOw'
iv = intarr2long([227, 197, 117, 252, 2, 219, 233, 68, 180, 225, 77, 219])
aadp = b64_header + b'.' + b64_ejek
gcm = AES_GCM(cek)
ctxt, tag = gcm.encrypt(iv, msg, aadp)
_va = to_intarr(ctxt)
assert _va == [
229, 236, 166, 241, 53, 191, 115, 196, 174, 43, 73, 109, 39, 122, 233,
96, 140, 206, 120, 52, 51, 237, 48, 11, 190, 219, 186, 80, 111, 104,
50, 142, 47, 167, 59, 61, 181, 127, 196, 21, 40, 82, 242, 32, 123, 143,
168, 226, 73, 216, 176, 144, 138, 247, 106, 60, 16, 205, 160, 109, 64,
63, 192
]
assert long2intarr(tag) == [
130, 17, 32, 198, 120, 167, 144, 113, 0, 50, 158, 49, 102, 208, 118,
152
]
tag = long2hexseq(tag)
iv = long2hexseq(iv)
res = b".".join([b64_header, b64_ejek, b64e(iv), b64e(ctxt), b64e(tag)])
#print(res.split(b'.'))
expected = b'.'.join([
b'eyJhbGciOiJSU0EtT0FFUCIsImVuYyI6IkEyNTZHQ00ifQ',
b'ApfOLCaDbqs_JXPYy2I937v_xmrzj-Iss1mG6NAHmeJViM6j2l0MHvfseIdHVyU2BIoGVu9ohvkkWiRq5DL2jYZTPA9TAdwq3FUIVyoH-Pedf6elHIVFi2KGDEspYMtQARMMSBcS7pslx6flh1Cfh3GBKysztVMEhZ_maFkm4PYVCsJsvq6Ct3fg2CJPOs0X1DHuxZKoIGIqcbeK4XEO5a0h5TAuJObKdfO0dKwfNSSbpu5sFrpRFwV2FTTYoqF4zI46N9-_hMIznlEpftRXhScEJuZ9HG8C8CHB1WRZ_J48PleqdhF4o7fB5J1wFqUXBtbtuGJ_A2Xe6AEhrlzCOw',
b'48V1_ALb6US04U3b',
b'5eym8TW_c8SuK0ltJ3rpYIzOeDQz7TALvtu6UG9oMo4vpzs9tX_EFShS8iB7j6jiSdiwkIr3ajwQzaBtQD_A',
b'ghEgxninkHEAMp4xZtB2mA'
])
assert res == expected
def test_jwe_09_a1():
# RSAES OAEP and AES GCM
msg = "The true sign of intelligence is not knowledge but imagination."
# A.1.1
header = '{"alg":"RSA-OAEP","enc":"A256GCM"}'
b64_header = b64e(header)
# A.1.2
assert b64_header == "eyJhbGciOiJSU0EtT0FFUCIsImVuYyI6IkEyNTZHQ00ifQ"
# A.1.3
cek = intarr2str([177, 161, 244, 128, 84, 143, 225, 115, 63, 180, 3, 255,
107, 154, 212, 246, 138, 7, 110, 91, 112, 46, 34, 105, 47,
130, 203, 46, 122, 234, 64, 252])
# A.1.4 Key Encryption
enc_key = [
56, 163, 154, 192, 58, 53, 222, 4, 105, 218, 136, 218, 29, 94, 203,
22, 150, 92, 129, 94, 211, 232, 53, 89, 41, 60, 138, 56, 196, 216,
82, 98, 168, 76, 37, 73, 70, 7, 36, 8, 191, 100, 136, 196, 244, 220,
145, 158, 138, 155, 4, 117, 141, 230, 199, 247, 173, 45, 182, 214,
74, 177, 107, 211, 153, 11, 205, 196, 171, 226, 162, 128, 171, 182,
13, 237, 239, 99, 193, 4, 91, 219, 121, 223, 107, 167, 61, 119, 228,
173, 156, 137, 134, 200, 80, 219, 74, 253, 56, 185, 91, 177, 34, 158,
89, 154, 205, 96, 55, 18, 138, 43, 96, 218, 215, 128, 124, 75, 138,
243, 85, 25, 109, 117, 140, 26, 155, 249, 67, 167, 149, 231, 100, 6,
41, 65, 214, 251, 232, 87, 72, 40, 182, 149, 154, 168, 31, 193, 126,
215, 89, 28, 111, 219, 125, 182, 139, 235, 195, 197, 23, 234, 55, 58,
63, 180, 68, 202, 206, 149, 75, 205, 248, 176, 67, 39, 178, 60, 98,
193, 32, 238, 122, 96, 158, 222, 57, 183, 111, 210, 55, 188, 215,
206, 180, 166, 150, 166, 106, 250, 55, 229, 72, 40, 69, 214, 216,
104, 23, 40, 135, 212, 28, 127, 41, 80, 175, 174, 168, 115, 171, 197,
89, 116, 92, 103, 246, 83, 216, 182, 176, 84, 37, 147, 35, 45, 219,
172, 99, 226, 233, 73, 37, 124, 42, 72, 49, 242, 35, 127, 184, 134,
117, 114, 135, 206]
b64_ejek = "ApfOLCaDbqs_JXPYy2I937v_xmrzj-Iss1mG6NAHmeJViM6j2l0MHvfseIdHVyU2BIoGVu9ohvkkWiRq5DL2jYZTPA9TAdwq3FUIVyoH-Pedf6elHIVFi2KGDEspYMtQARMMSBcS7pslx6flh1Cfh3GBKysztVMEhZ_maFkm4PYVCsJsvq6Ct3fg2CJPOs0X1DHuxZKoIGIqcbeK4XEO5a0h5TAuJObKdfO0dKwfNSSbpu5sFrpRFwV2FTTYoqF4zI46N9-_hMIznlEpftRXhScEJuZ9HG8C8CHB1WRZ_J48PleqdhF4o7fB5J1wFqUXBtbtuGJ_A2Xe6AEhrlzCOw"
iv = intarr2str([227, 197, 117, 252, 2, 219, 233, 68, 180, 225, 77, 219])
aadp = b64_header + b'.' + b64_ejek
ctxt, tag = gcm_encrypt(cek, iv, msg, aadp)
_va = [ord(c) for c in ctxt]
assert _va == [229, 236, 166, 241, 53, 191, 115, 196, 174, 43, 73, 109, 39,
122, 233, 96, 140, 206, 120, 52, 51, 237, 48, 11, 190, 219,
186, 80, 111, 104, 50, 142, 47, 167, 59, 61, 181, 127, 196,
21, 40, 82, 242, 32, 123, 143, 168, 226, 73, 216, 176, 144,
138, 247, 106, 60, 16, 205, 160, 109, 64, 63, 192]
assert [ord(c) for c in tag] == [130, 17, 32, 198, 120, 167, 144, 113, 0,
50, 158, 49, 102, 208, 118, 152]
res = b".".join([b64_header, b64_ejek, b64e(iv), b64e(ctxt), b64e(tag)])
assert res == "".join([
"eyJhbGciOiJSU0EtT0FFUCIsImVuYyI6IkEyNTZHQ00ifQ.",
"ApfOLCaDbqs_JXPYy2I937v_xmrzj-Iss1mG6NAHmeJViM6j2l0MHvfseIdHVyU2",
"BIoGVu9ohvkkWiRq5DL2jYZTPA9TAdwq3FUIVyoH-Pedf6elHIVFi2KGDEspYMtQ",
"ARMMSBcS7pslx6flh1Cfh3GBKysztVMEhZ_maFkm4PYVCsJsvq6Ct3fg2CJPOs0X",
"1DHuxZKoIGIqcbeK4XEO5a0h5TAuJObKdfO0dKwfNSSbpu5sFrpRFwV2FTTYoqF4",
"zI46N9-_hMIznlEpftRXhScEJuZ9HG8C8CHB1WRZ_J48PleqdhF4o7fB5J1wFqUX",
"BtbtuGJ_A2Xe6AEhrlzCOw.",
"48V1_ALb6US04U3b.",
"5eym8TW_c8SuK0ltJ3rpYIzOeDQz7TALvtu6UG9oMo4vpzs9tX_EFShS8iB7j6ji",
"SdiwkIr3ajwQzaBtQD_A.",
"ghEgxninkHEAMp4xZtB2mA"])
def _encoded_header(self, extra=None):
return b64e(json.dumps(self._header(extra), separators=(",", ":")))
def test_thumbprint():
keyl = KEYS()
keyl.load_dict(JWKS)
for key in keyl:
txt = key.thumbprint('SHA-256')
assert b64e(txt) in EXPECTED
def enc_setup(self, msg, auth_data, key=None, **kwargs):
encrypted_key = ""
self.msg = msg
self.auth_data = auth_data
# Generate the input parameters
try:
apu = b64d(kwargs["apu"])
except KeyError:
apu = Random.get_random_bytes(16)
try:
apv = b64d(kwargs["apv"])
except KeyError:
apv = Random.get_random_bytes(16)
# Handle Local Key and Ephemeral Public Key
if not key:
raise Exception("EC Key Required for ECDH-ES JWE Encrpytion Setup")
# Generate an ephemeral key pair if none is given
curve = NISTEllipticCurve.by_name(key.crv)
if "epk" in kwargs:
epk = kwargs["epk"] if isinstance(kwargs["epk"], ECKey) else ECKey(kwargs["epk"])
else:
raise Exception(
"Ephemeral Public Key (EPK) Required for ECDH-ES JWE "
"Encryption Setup")
params = {
"apu": b64e(apu),
"apv": b64e(apv),
"epk": epk.serialize(False)
}
cek = iv = None
if 'cek' in kwargs and kwargs['cek']:
cek = kwargs['cek']
if 'iv' in kwargs and kwargs['iv']:
iv = kwargs['iv']
cek, iv = self._generate_key_and_iv(self.enc, cek=cek, iv=iv)
if self.alg == "ECDH-ES":
try:
dk_len = KEYLEN[self.enc]
except KeyError:
raise Exception(
"Unknown key length for algorithm %s" % self.enc)
cek = ecdh_derive_key(curve, epk.d, (key.x, key.y), apu, apv,
str(self.enc).encode(), dk_len)
elif self.alg in ["ECDH-ES+A128KW", "ECDH-ES+A192KW", "ECDH-ES+A256KW"]:
_pre, _post = self.alg.split("+")
klen = int(_post[1:4])
kek = ecdh_derive_key(curve, epk.d, (key.x, key.y), apu, apv,
str(_post).encode(), klen)
encrypted_key = aes_wrap_key(kek, cek)
else:
raise Exception("Unsupported algorithm %s" % self.alg)
return cek, encrypted_key, iv, params, epk
def test_a_1_1a():
header = b'{"typ":"JWT",\r\n "alg":"HS256"}'
val = b64e(header)
assert val == b"eyJ0eXAiOiJKV1QiLA0KICJhbGciOiJIUzI1NiJ9"
def _encoded_payload(self):
if isinstance(self.msg, basestring):
return b64e(self.msg)
else:
return b64e(json.dumps(self.msg, separators=(",", ":")))
