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.NET Forum / Languages / C# / March 2008Does the MD5CryptoServiceProvider hash differ depending on where it is run?
If a password makes use of a MD5CryptoServiceProvider hash for encryption, will this hash be different if it is generated on a different server? For example encrypting and decrupting on an application farm? > If a password makes use of a MD5CryptoServiceProvider hash for encryption, > will this hash be different if it is generated on a different server? For > example encrypting and decrupting on an application farm? It shouldn't be, no. MD5 is a well-specified standard for how to create a hash from a given input stream; it should give the same answer regardless of OS, implementation language, data source type etc.  SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet World class .NET training in the UK: http://iterativetraining.co.uk > If a password makes use of a MD5CryptoServiceProvider hash for encryption, > will this hash be different if it is generated on a different server? For > example encrypting and decrupting on an application farm? No. But you should use a site specific or even better a username specific salt in the hashing. Oh - and use SHA-256 instead of MD5 as well. Arne
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