Java SHA1 sha1(final byte[] bytes)

Description

Gets the given byte array's SHA-1 checksum, or null if unavailable.

License

Open Source License

Declaration

public static byte[] sha1(final byte[] bytes) 

Method Source Code

//package com.java2s;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
    /** Gets the given byte array's SHA-1 checksum, or null if unavailable. */
    public static byte[] sha1(final byte[] bytes) {
        return digest("SHA-1", bytes);
    }//  ww w  . jav  a  2 s .  c o  m

    /**
     * Gets the given byte array's hash value according to the specified
     * algorithm.
     * 
     * @param algorithm The algorithm to use when generating the hash value.
     * @param bytes The byte array for which to compute the hash value.
     * @return The computed hash value, or null if the digest algorithm is not
     *         available.
     * @see MessageDigest
     */
    public static byte[] digest(final String algorithm, final byte[] bytes) {
        try {
            final MessageDigest digest = MessageDigest.getInstance(algorithm);
            digest.update(bytes);
            return digest.digest();
        } catch (final NoSuchAlgorithmException exc) {
            return null;
        }
    }
}

Related

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3. sha1(File file)
4. sha1(File file)
5. sha1(File sourceFile)
6. sha1(final File file)
7. sha1(final String data)
8. sha1(final String str)
9. sha1(final String string)