SHA1Managed from System.Security.Cryptography

From IronPython Cookbook

An example of using the SHA1Managed class from System.Security.Cryptography. (From this blog entry.)

This generates an SHA1 hash from a file called "C:/report.txt", as a base64 string.

>>> from System import Convert
>>> from System.IO import FileStream, FileMode, FileAccess
>>> from System.Security.Cryptography import SHA1Managed
>>>
>>> stream = FileStream("C:/report.txt", FileMode.Open, FileAccess.Read)
>>> sha1 = SHA1Managed()
>>> Convert.ToBase64String(sha1.ComputeHash(stream))
'2jmj7l5rSw0yVb/vlWAYkK/YBwk='
>>>

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