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How do hash functions work?

Everybody who has written a noticeable amount of Java code should know the method hashCode(). But most beginners have difficulties to understand the significance of this little method. The following...

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MD5 cracking

MD5 is a cryptographic hash function. This means, you can give the MD5 algorithm a string and it will return another 32-character long alphanumeric string. The returned string looks quite random, but...

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