58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
import hashlib
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import os
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import base64
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def sha1sum(file, blocksize=65536):
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if hasattr(file, "endswith"): # Its a string open it
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file = open(file, "rb")
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hash = hashlib.sha1()
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for block in iter(lambda: file.read(blocksize), ""):
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hash.update(block)
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return hash.hexdigest()
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def sha512sum(file, blocksize=65536):
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if hasattr(file, "endswith"): # Its a string open it
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file = open(file, "rb")
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hash = hashlib.sha512()
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for block in iter(lambda: file.read(blocksize), ""):
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hash.update(block)
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return hash.hexdigest()[0:64] # Truncate to 256bits is good enough
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def sha256sum(file, blocksize=65536):
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if hasattr(file, "endswith"): # Its a string open it
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file = open(file, "rb")
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hash = hashlib.sha256()
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for block in iter(lambda: file.read(blocksize), ""):
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hash.update(block)
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return hash.hexdigest()
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def random(length=64, encoding="hex"):
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if encoding == "base64": # Characters: A-Za-z0-9
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hash = hashlib.sha512(os.urandom(256)).digest()
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return base64.standard_b64encode(hash).replace("+", "").replace("/", "").replace("=", "")[0:length]
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else: # Characters: a-f0-9 (faster)
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return hashlib.sha512(os.urandom(256)).hexdigest()[0:length]
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if __name__ == "__main__":
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import cStringIO as StringIO
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a = StringIO.StringIO()
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a.write("hello!")
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a.seek(0)
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print hashlib.sha1("hello!").hexdigest()
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print sha1sum(a)
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import time
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s = time.time()
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print sha1sum(open("F:\\Temp\\bigfile")),
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print time.time() - s
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s = time.time()
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print sha512sum(open("F:\\Temp\\bigfile")),
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print time.time() - s
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