I'm working on java... I want to know how to convert array of byte into BigInteger. Actually i used md5's digest method which returned me array of byte which i want to convert into Biginteger.
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@Stephen C :) :) , I meant in which manner particularly, It can be simple array of byte[] also String content's byte representationJigar Joshi– Jigar Joshi2010-11-15 06:54:53 +00:00Commented Nov 15, 2010 at 6:54
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2 Answers
This example Get MD5 hash in a few lines of Java has a related example.
I believe you should be able to do
MessageDigest m=MessageDigest.getInstance("MD5");
m.update(message.getBytes(), 0, message.length());
BigInteger bi = new BigInteger(1,m.digest());
and if you want it printed in the style "d41d8cd98f00b204e9800998ecf8427e" you should be able to do
System.out.println(bi.toString(16));
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Actually i used md5's digest method which returned me array of byte which i want to convert into a
BigInteger.
You can use new BigInteger(byte[]).
However, it should be noted that the MD5 hash is not really an integer in any useful sense. It is really just a binary bit pattern.
I guess you are just doing this so that you can print or order the MD5 hashes. But there are less memory hungry ways of accomplishing both tasks.
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Janus Troelsen
better to use the integer,byte[] constructor. this one will interpret it as a two's complement binary representation