Java Language
- Getting started with Java Language
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Java Language Security & Cryptography Compute Cryptographic Hashes
Example
To compute the hashes of relatively small blocks of data using different algorithms:
final MessageDigest md5 = MessageDigest.getInstance("MD5");
final MessageDigest sha1 = MessageDigest.getInstance("SHA-1");
final MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
final byte[] data = "FOO BAR".getBytes();
System.out.println("MD5 hash: " + DatatypeConverter.printHexBinary(md5.digest(data)));
System.out.println("SHA1 hash: " + DatatypeConverter.printHexBinary(sha1.digest(data)));
System.out.println("SHA256 hash: " + DatatypeConverter.printHexBinary(sha256.digest(data)));
Produces this output:
MD5 hash: E99E768582F6DD5A3BA2D9C849DF736E
SHA1 hash: 0135FAA6323685BA8A8FF8D3F955F0C36949D8FB
SHA256 hash: 8D35C97BCD902B96D1B551741BBE8A7F50BB5A690B4D0225482EAA63DBFB9DED
Additional algorithms may be available depending on your implementation of the Java platform.
