[IronPython] Copying a cryptographic context

J. Merrill jvm_cop at spamcop.net
Wed Oct 11 14:56:38 CEST 2006

Did you try the .Net Clone() method?  If it signals Not Implemented, one could justifiably complain.

At 04:44 AM 10/11/2006, Sanghyeon Seo wrote
>Python's hash objects can be copied by copy() method. To quote the
>library reference, "This can be used to efficiently compute the
>digests of strings that share a common initial substring."
>I couldn't find any way to copy a cryptographic context encapsulated
>by HashAlgorithm instances on .NET framework. I found this curious, as
>this is so clearly useful.
>Someone suggested that this is same as SSPI(Security Service Provider
>Interface), which also doesn't provide any way to copy a cryptographic
>context. But this can't be the reason, as .NET framework's SHA*
>classes are implemented in the managed code.
>Can anyone shed some light?
>Seo Sanghyeon

J. Merrill / Analytical Software Corp

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