Package org.alfresco.util
Class MD5
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- org.alfresco.util.MD5
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public class MD5 extends java.lang.Object
The MD5 utility class computes the MD5 digest (aka: "hash") of a block of data; an MD5 digest is a 32-char ASCII string. The synchronized/static function "Digest" is useful for situations where lock contention in the application is not expected to be an issue. The unsynchronized/non-static method "digest" is useful in a multi-threaded program that wanted to avoid locking by creating an MD5 object for exclusive use by a single thread.EXAMPLE 1: Static usage import org..alfresco.util.MD5; String x = MD5.Digest("hello".getBytes()); EXAMPLE 2: Per-thread non-static usage import org..alfresco.util.MD5; MD5 md5 = new MD5(); ... String x = md5.digest("hello".getBytes());
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Constructor Summary
Constructors Constructor Description MD5()
Constructor for use with the unsynchronized/non-static method "digest" method.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
digest(byte[] dataToHash)
Non-threadsafe MD5 digest (hashing) functionstatic java.lang.String
Digest(byte[] dataToHash)
Thread-safe static digest (hashing) function.
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Constructor Detail
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MD5
public MD5()
Constructor for use with the unsynchronized/non-static method "digest" method. Note that the "digest" function is not thread-safe, so if you want to use it, every thread must create its own MD5 instance. If you don't want to bother & are willing to deal with the potential for lock contention, use the synchronized static "Digest" function instead of creating an instance via this constructor.
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Method Detail
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Digest
public static java.lang.String Digest(byte[] dataToHash)
Thread-safe static digest (hashing) function. If you want to avoid lock contention, create an instance of MD5 per-thead, anc call the unsynchronized method 'digest' instead.
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digest
public java.lang.String digest(byte[] dataToHash)
Non-threadsafe MD5 digest (hashing) function
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