Creating MessageDigest - 2
7 May 2008This post is in continuation of “Creating MessageDigest - 1″. Do read that before going through this one.
In the last post, I presented an example. It was shown that we generated a MD5 hash code for the string. The output we got was:
String: Hello World MessageDigest: b10a8db164e0754105b7a99be72e3fe5
Lets do some experiments. I changed the string slighlty and got entirely different hash code. Review the output:
String: hello World MessageDigest: 39d11ab1c3c6c9eab3f5b3675f438dbf
You have 3 different methods to generate the digest. Use the one as required.
byte[] digest() byte[] digest(byte[] input) int digest(byte[] buf, int offset, int len)
As a developer, you need not to worry about MD5 algorithm implementation. So, generating message digests is very simple and easy.
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