def generateChecksum(key, method="base62"):
"""
Generates a unique SHA1 based hash/checksum encoded as Base62 or Hex depending on the given parameters.
:param key:
:type key: str
:param method:
:type method: str
"""
# Alternative hashing method using SIP keys:
#
# https://github.com/majek/pysiphash (Python library)
# https://github.com/jedisct1/siphash-js (Node/JS library - for Core)
#
# if SIPHASH_SUPPORTED:
# sipkey = ("JASY" * 4).encode("ascii")
# self.__checksum2 = siphash.SipHash_2_4(sipkey).update(self.__key.encode("ascii")).hexdigest()
# print("SIP Checksum: %s" % self.__checksum2.decode("ascii"))
sha1 = hashlib.sha1(key.encode("ascii"))
if method == "base62":
return Base62.encodeArrayToString(sha1.digest())
else:
return sha1.hexdigest()
def generateChecksum(key, method="base62"):
"""
Generates a unique SHA1 based hash/checksum encoded as Base62 or Hex depending on the given parameters.
:param key:
:type key: str
:param method:
:type method: str
"""
# Alternative hashing method using SIP keys:
#
# https://github.com/majek/pysiphash (Python library)
# https://github.com/jedisct1/siphash-js (Node/JS library - for Core)
#
# if SIPHASH_SUPPORTED:
# sipkey = ("JASY" * 4).encode("ascii")
# self.__checksum2 = siphash.SipHash_2_4(sipkey).update(self.__key.encode("ascii")).hexdigest()
# print("SIP Checksum: %s" % self.__checksum2.decode("ascii"))
sha1 = hashlib.sha1(key.encode("ascii"))
if method == "base62":
return Base62.encodeArrayToString(sha1.digest())
else:
return sha1.hexdigest()
def sha1(fileOrPath, block_size=2 ** 20):
"""Returns a SHA 1 checksum (as hex digest) of the given file (handle)"""
if isinstance(fileOrPath, str):
fileOrPath = open(fileOrPath, "rb")
sha1res = hashlib.sha1()
while True:
data = fileOrPath.read(block_size)
if not data:
break
sha1res.update(data)
return Base62.encodeArrayToString(sha1res.digest())
def sha1(fileOrPath, block_size=2**20):
"""Returns a SHA 1 checksum (as hex digest) of the given file (handle)"""
if isinstance(fileOrPath, str):
fileOrPath = open(fileOrPath, "rb")
sha1res = hashlib.sha1()
while True:
data = fileOrPath.read(block_size)
if not data:
break
sha1res.update(data)
return Base62.encodeArrayToString(sha1res.digest())
