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c#sha1portable-class-library

Generate SHA1 Hash in Portable Class Library

I'm trying to build a portable class library that generates OAuth urls for other classes/applications to use. This class library using OAuth has to be a portable class library so it can work with different versions of a DropBox API I'm building.

Part of this class needs to generate an SHA1 hash to generate the oauth_signature with.

I'm aware that portable class library doesn't support System.Security.Cryptography, so is there anyway that this class can generate an SHA1 hash without that class?

Solution

  • Mono provides a managed implementation of SHA1 for it's own mscorlib.dll (but it's not located in Mono.Security.dll like @CodeInChaos suggested).

    It's open source, very well tested and meant to behave exactly like Microsoft implementation (e.g. it derives from SHA1, HashAlgorith... implements ICryptoTransform...) so it should be an easy drop-in replacement.