def urandom(n):
global urandom_source
if urandom_source is None:
urandom_source = SecureRandom()
buffer = jarray.zeros(n, 'b')
urandom_source.nextBytes(buffer)
return buffer.tostring()
def urandom(n):
global urandom_source
if urandom_source is None:
urandom_source = SecureRandom()
buffer = jarray.zeros(n, 'b')
urandom_source.nextBytes(buffer)
return buffer.tostring()
class _UserFriendlyRNG(object):
def __init__(self):
self.closed = False
self.__securerandom = None
self.reinit()
def reinit(self):
self.__securerandom = SecureRandom()
def close(self):
self.closed = True
self.__securerandom = None
def flush(self):
pass
def read(self, N):
if self.closed:
raise ValueError("I/O operation on closed file")
if not isinstance(N, (long, int)):
raise TypeError("an integer is required")
if N < 0:
raise ValueError("cannot read to end of infinite stream")
result = jarray.zeros(N, 'b')
self.__securerandom.nextBytes(result)
return result.tostring()
class _UserFriendlyRNG(object):
def __init__(self):
self.closed = False
self.__securerandom = None
self.reinit()
def reinit(self):
self.__securerandom = SecureRandom()
def close(self):
self.closed = True
self.__securerandom = None
def flush(self):
pass
def read(self, N):
if self.closed:
raise ValueError("I/O operation on closed file")
if not isinstance(N, (long, int)):
raise TypeError("an integer is required")
if N < 0:
raise ValueError("cannot read to end of infinite stream")
result = jarray.zeros(N, 'b')
self.__securerandom.nextBytes(result)
return result.tostring()
def generateSecretKey(self, keyLength):
bytes = jarray.zeros(keyLength, "b")
secureRandom = SecureRandom()
secureRandom.nextBytes(bytes)
return bytes
def generateNonce(keyLength):
bytes = jarray.zeros(keyLength, "b")
secureRandom = SecureRandom()
secureRandom.nextBytes(bytes)
return BaseEncoding.base64().omitPadding().encode(bytes)
def generateSecretKey(self, keyLength):
bytes = jarray.zeros(keyLength, "b")
secureRandom = SecureRandom()
secureRandom.nextBytes(bytes)
return bytes