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The Apache Commons Codec component contains encoders and decoders for
various formats such as Base16, Base32, Base64, digest, and Hexadecimal. In addition to these
widely used encoders and decoders, the codec package also maintains a
collection of phonetic encoding utilities.
This is a port for GWT, which enables program, to use Apache Commons Codec
also in the frontend compiled by the gwt compiler to java-script.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.codec.digest;
import java.io.IOException;
import java.io.InputStream;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.binary.StringUtils;
import com.google.gwt.core.shared.GwtIncompatible;
/**
* Simplifies common {@link javax.crypto.Mac} tasks. This class is immutable and thread-safe.
*
*
*
* Note: Not all JCE implementations supports all algorithms. If not supported, an IllegalArgumentException is
* thrown.
*
*
* @since 1.10
* @version $Id: HmacUtils.java 1634411 2014-10-27 00:35:43Z ggregory $
*/
@GwtIncompatible("incompatible class")
public final class HmacUtils {
private static final int STREAM_BUFFER_LENGTH = 1024;
/**
* Returns an initialized Mac for the HmacMD5 algorithm.
*
* Every implementation of the Java platform is required to support this standard Mac algorithm.
*
*
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getHmacMd5(final byte[] key) {
return getInitializedMac(HmacAlgorithms.HMAC_MD5, key);
}
/**
* Returns an initialized Mac for the HmacSHA1 algorithm.
*
* Every implementation of the Java platform is required to support this standard Mac algorithm.
*
*
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getHmacSha1(final byte[] key) {
return getInitializedMac(HmacAlgorithms.HMAC_SHA_1, key);
}
/**
* Returns an initialized Mac for the HmacSHA256 algorithm.
*
* Every implementation of the Java platform is required to support this standard Mac algorithm.
*
*
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getHmacSha256(final byte[] key) {
return getInitializedMac(HmacAlgorithms.HMAC_SHA_256, key);
}
/**
* Returns an initialized Mac for the HmacSHA384 algorithm.
*
* Every implementation of the Java platform is not required to support this Mac algorithm.
*
*
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getHmacSha384(final byte[] key) {
return getInitializedMac(HmacAlgorithms.HMAC_SHA_384, key);
}
/**
* Returns an initialized Mac for the HmacSHA512 algorithm.
*
* Every implementation of the Java platform is not required to support this Mac algorithm.
*
*
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getHmacSha512(final byte[] key) {
return getInitializedMac(HmacAlgorithms.HMAC_SHA_512, key);
}
/**
* Returns an initialized Mac for the given algorithm.
*
* @param algorithm
* the name of the algorithm requested. See Appendix
* A in the Java Cryptography Architecture Reference Guide for information about standard algorithm
* names.
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getInitializedMac(final HmacAlgorithms algorithm, final byte[] key) {
return getInitializedMac(algorithm.toString(), key);
}
/**
* Returns an initialized Mac for the given algorithm.
*
* @param algorithm
* the name of the algorithm requested. See Appendix
* A in the Java Cryptography Architecture Reference Guide for information about standard algorithm
* names.
* @param key
* They key for the keyed digest (must not be null)
* @return A Mac instance initialized with the given key.
* @see Mac#getInstance(String)
* @see Mac#init(Key)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static Mac getInitializedMac(final String algorithm, final byte[] key) {
if (key == null) {
throw new IllegalArgumentException("Null key");
}
try {
final SecretKeySpec keySpec = new SecretKeySpec(key, algorithm);
final Mac mac = Mac.getInstance(algorithm);
mac.init(keySpec);
return mac;
} catch (final NoSuchAlgorithmException e) {
throw new IllegalArgumentException(e);
} catch (final InvalidKeyException e) {
throw new IllegalArgumentException(e);
}
}
// hmacMd5
/**
* Returns a HmacMD5 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacMD5 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacMd5(final byte[] key, final byte[] valueToDigest) {
try {
return getHmacMd5(key).doFinal(valueToDigest);
} catch (final IllegalStateException e) {
// cannot happen
throw new IllegalArgumentException(e);
}
}
/**
* Returns a HmacMD5 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacMD5 MAC for the given key and value
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacMd5(final byte[] key, final InputStream valueToDigest) throws IOException {
return updateHmac(getHmacMd5(key), valueToDigest).doFinal();
}
/**
* Returns a HmacMD5 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacMD5 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacMd5(final String key, final String valueToDigest) {
return hmacMd5(StringUtils.getBytesUtf8(key), StringUtils.getBytesUtf8(valueToDigest));
}
/**
* Returns a HmacMD5 Message Authentication Code (MAC) as a hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacMD5 MAC for the given key and value as a hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacMd5Hex(final byte[] key, final byte[] valueToDigest) {
return Hex.encodeHexString(hmacMd5(key, valueToDigest));
}
/**
* Returns a HmacMD5 Message Authentication Code (MAC) as a hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacMD5 MAC for the given key and value as a hex string (lowercase)
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacMd5Hex(final byte[] key, final InputStream valueToDigest) throws IOException {
return Hex.encodeHexString(hmacMd5(key, valueToDigest));
}
/**
* Returns a HmacMD5 Message Authentication Code (MAC) as a hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacMD5 MAC for the given key and value as a hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacMd5Hex(final String key, final String valueToDigest) {
return Hex.encodeHexString(hmacMd5(key, valueToDigest));
}
// hmacSha1
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA1 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha1(final byte[] key, final byte[] valueToDigest) {
try {
return getHmacSha1(key).doFinal(valueToDigest);
} catch (final IllegalStateException e) {
// cannot happen
throw new IllegalArgumentException(e);
}
}
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA1 MAC for the given key and value
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha1(final byte[] key, final InputStream valueToDigest) throws IOException {
return updateHmac(getHmacSha1(key), valueToDigest).doFinal();
}
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA1 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha1(final String key, final String valueToDigest) {
return hmacSha1(StringUtils.getBytesUtf8(key), StringUtils.getBytesUtf8(valueToDigest));
}
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA1 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha1Hex(final byte[] key, final byte[] valueToDigest) {
return Hex.encodeHexString(hmacSha1(key, valueToDigest));
}
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA1 MAC for the given key and value as hex string (lowercase)
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha1Hex(final byte[] key, final InputStream valueToDigest) throws IOException {
return Hex.encodeHexString(hmacSha1(key, valueToDigest));
}
/**
* Returns a HmacSHA1 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA1 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha1Hex(final String key, final String valueToDigest) {
return Hex.encodeHexString(hmacSha1(key, valueToDigest));
}
// hmacSha256
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA256 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha256(final byte[] key, final byte[] valueToDigest) {
try {
return getHmacSha256(key).doFinal(valueToDigest);
} catch (final IllegalStateException e) {
// cannot happen
throw new IllegalArgumentException(e);
}
}
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA256 MAC for the given key and value
* @throws IOException
* If an I/O error occurs.
s * @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha256(final byte[] key, final InputStream valueToDigest) throws IOException {
return updateHmac(getHmacSha256(key), valueToDigest).doFinal();
}
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA256 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha256(final String key, final String valueToDigest) {
return hmacSha256(StringUtils.getBytesUtf8(key), StringUtils.getBytesUtf8(valueToDigest));
}
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA256 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha256Hex(final byte[] key, final byte[] valueToDigest) {
return Hex.encodeHexString(hmacSha256(key, valueToDigest));
}
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA256 MAC for the given key and value as hex string (lowercase)
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha256Hex(final byte[] key, final InputStream valueToDigest) throws IOException {
return Hex.encodeHexString(hmacSha256(key, valueToDigest));
}
/**
* Returns a HmacSHA256 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA256 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha256Hex(final String key, final String valueToDigest) {
return Hex.encodeHexString(hmacSha256(key, valueToDigest));
}
// hmacSha384
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA384 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha384(final byte[] key, final byte[] valueToDigest) {
try {
return getHmacSha384(key).doFinal(valueToDigest);
} catch (final IllegalStateException e) {
// cannot happen
throw new IllegalArgumentException(e);
}
}
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA384 MAC for the given key and value
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha384(final byte[] key, final InputStream valueToDigest) throws IOException {
return updateHmac(getHmacSha384(key), valueToDigest).doFinal();
}
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA384 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha384(final String key, final String valueToDigest) {
return hmacSha384(StringUtils.getBytesUtf8(key), StringUtils.getBytesUtf8(valueToDigest));
}
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA384 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha384Hex(final byte[] key, final byte[] valueToDigest) {
return Hex.encodeHexString(hmacSha384(key, valueToDigest));
}
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA384 MAC for the given key and value as hex string (lowercase)
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha384Hex(final byte[] key, final InputStream valueToDigest) throws IOException {
return Hex.encodeHexString(hmacSha384(key, valueToDigest));
}
/**
* Returns a HmacSHA384 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA384 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha384Hex(final String key, final String valueToDigest) {
return Hex.encodeHexString(hmacSha384(key, valueToDigest));
}
// hmacSha512
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA512 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha512(final byte[] key, final byte[] valueToDigest) {
try {
return getHmacSha512(key).doFinal(valueToDigest);
} catch (final IllegalStateException e) {
// cannot happen
throw new IllegalArgumentException(e);
}
}
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA512 MAC for the given key and value
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha512(final byte[] key, final InputStream valueToDigest) throws IOException {
return updateHmac(getHmacSha512(key), valueToDigest).doFinal();
}
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA512 MAC for the given key and value
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static byte[] hmacSha512(final String key, final String valueToDigest) {
return hmacSha512(StringUtils.getBytesUtf8(key), StringUtils.getBytesUtf8(valueToDigest));
}
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA512 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha512Hex(final byte[] key, final byte[] valueToDigest) {
return Hex.encodeHexString(hmacSha512(key, valueToDigest));
}
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest
*
* The InputStream must not be null and will not be closed
*
* @return HmacSHA512 MAC for the given key and value as hex string (lowercase)
* @throws IOException
* If an I/O error occurs.
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha512Hex(final byte[] key, final InputStream valueToDigest) throws IOException {
return Hex.encodeHexString(hmacSha512(key, valueToDigest));
}
/**
* Returns a HmacSHA512 Message Authentication Code (MAC) as hex string (lowercase) for the given key and value.
*
* @param key
* They key for the keyed digest (must not be null)
* @param valueToDigest
* The value (data) which should to digest (maybe empty or null)
* @return HmacSHA512 MAC for the given key and value as hex string (lowercase)
* @throws IllegalArgumentException
* when a {@link NoSuchAlgorithmException} is caught or key is null or key is invalid.
*/
public static String hmacSha512Hex(final String key, final String valueToDigest) {
return Hex.encodeHexString(hmacSha512(key, valueToDigest));
}
// update
/**
* Updates the given {@link Mac}. This generates a digest for valueToDigest and the key the Mac was initialized
*
* @param mac
* the initialized {@link Mac} to update
* @param valueToDigest
* the value to update the {@link Mac} with (maybe null or empty)
* @return the updated {@link Mac}
* @throws IllegalStateException
* if the Mac was not initialized
* @since 1.x
*/
public static Mac updateHmac(final Mac mac, final byte[] valueToDigest) {
mac.reset();
mac.update(valueToDigest);
return mac;
}
/**
* Updates the given {@link Mac}. This generates a digest for valueToDigest and the key the Mac was initialized
*
* @param mac
* the initialized {@link Mac} to update
* @param valueToDigest
* the value to update the {@link Mac} with
*
* The InputStream must not be null and will not be closed
*
* @return the updated {@link Mac}
* @throws IOException
* If an I/O error occurs.
* @throws IllegalStateException
* If the Mac was not initialized
* @since 1.x
*/
public static Mac updateHmac(final Mac mac, final InputStream valueToDigest) throws IOException {
mac.reset();
final byte[] buffer = new byte[STREAM_BUFFER_LENGTH];
int read = valueToDigest.read(buffer, 0, STREAM_BUFFER_LENGTH);
while (read > -1) {
mac.update(buffer, 0, read);
read = valueToDigest.read(buffer, 0, STREAM_BUFFER_LENGTH);
}
return mac;
}
/**
* Updates the given {@link Mac}. This generates a digest for valueToDigest and the key the Mac was initialized
*
* @param mac
* the initialized {@link Mac} to update
* @param valueToDigest
* the value to update the {@link Mac} with (maybe null or empty)
* @return the updated {@link Mac}
* @throws IllegalStateException
* if the Mac was not initialized
* @since 1.x
*/
public static Mac updateHmac(final Mac mac, final String valueToDigest) {
mac.reset();
mac.update(StringUtils.getBytesUtf8(valueToDigest));
return mac;
}
}
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