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SHA-1 Hash in Java and .NET

843810Jul 1 2002 — edited Jul 2 2002

I am comparing SHA-1 hashes generated in Java and .NET. Unless I'm mistaken, a byte stream supplied to one SHA-1 implementation should generate the same message digest to any other SHA-1 implementation.

For java I am using the Sun provider SunJCE built into the 1.4 SDK.

For .NET, I am using the SHA1CryptoServiceProvider.

I am supplying each with the same byte stream; the US-ASCII byte stream for "abc" = {97, 98, 99}.

The SunJCE message digest (in bytes) are:
-87 -103 62 54 71 6 -127 106 -70 62 37 113 120 80 -62 108 -100 -48 -40 -99

The .NET message digest (in bytes) are:
169 153 62 54 71 6 129 106 186 62 37 113 120 80 194 108 156 208 216 157

Does anyone know why the two implementations do not produce the same message digests?

Ricky
rzeng@mindspring.com

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Locked on Jul 30 2002

Added on Jul 1 2002

#cryptography

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