Aug 24

We’ve previously shown how to create an MD5 sum for a file. If you don’t have a file and instead just need an MD5 sum for a byte array then you can achieve it using the following code.

            // Data is the byte array we need an MD5 sum for

            byte[] data = getDataFromWhereever();

            // Get an MD5 implementation of MessageDigest

            MessageDigest md = MessageDigest.getInstance("MD5");

            // Convert the MD5 byte array to a hex string

            String md5 = new BigInteger(1, md.digest(data)).toString(16);

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