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Panda Core is the core module of Panda Framework, it contains commonly used utility classes similar to apache-commons.
package panda.util.crypto;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import panda.codec.binary.Base64;
import panda.codec.binary.Hex;
import panda.lang.Charsets;
import panda.lang.Exceptions;
public class Macs {
public static final String HMAC_MD5 = "HmacMD5";
public static final String HMAC_SHA1 = "HmacSHA1";
public static final String HMAC_SHA256 = "HmacSHA256";
public static final String HMAC_SHA512 = "HmacSHA512";
//----------------------------------------------------------------------
// Digest
//
public static Mac mac(String algorithm) {
try {
return Mac.getInstance(algorithm);
}
catch (NoSuchAlgorithmException e) {
throw new IllegalArgumentException(e);
}
}
public static Mac sha256() {
return mac(HMAC_SHA256);
}
public static Mac sha512() {
return mac(HMAC_SHA512);
}
public static byte[] digest(String algorithm, String secret, String data) {
try {
return digest(algorithm, secret, data.getBytes(Charsets.UTF_8));
}
catch (UnsupportedEncodingException e) {
throw Exceptions.wrapThrow(e);
}
}
public static byte[] digest(String algorithm, byte[] secret, String data) {
try {
return digest(algorithm, secret, data.getBytes(Charsets.UTF_8));
}
catch (UnsupportedEncodingException e) {
throw Exceptions.wrapThrow(e);
}
}
public static byte[] digest(String algorithm, String secret, byte[] data) {
try {
return digest(algorithm, secret.getBytes(Charsets.UTF_8), data);
}
catch (UnsupportedEncodingException e) {
throw Exceptions.wrapThrow(e);
}
}
public static byte[] digest(String algorithm, byte[] secret, byte[] data) {
Mac mac = mac(algorithm);
SecretKeySpec sks = new SecretKeySpec(secret, algorithm);
try {
mac.init(sks);
}
catch (InvalidKeyException e) {
throw new IllegalArgumentException(e);
}
byte[] sig = mac.doFinal(data);
return sig;
}
public static String digestHex(String algorithm, String secret, String data) {
return Hex.encodeHexString(digest(algorithm, secret, data));
}
public static String digestHex(String algorithm, String secret, byte[] data) {
return Hex.encodeHexString(digest(algorithm, secret, data));
}
public static String digestHex(String algorithm, byte[] secret, byte[] data) {
return Hex.encodeHexString(digest(algorithm, secret, data));
}
public static String digestBase64(String algorithm, String secret, String data) {
return Base64.encodeBase64String(digest(algorithm, secret, data));
}
public static String digestBase64(String algorithm, String secret, byte[] data) {
return Base64.encodeBase64String(digest(algorithm, secret, data));
}
public static String digestBase64(String algorithm, byte[] secret, byte[] data) {
return Base64.encodeBase64String(digest(algorithm, secret, data));
}
/**
* Calculates the SHA-256 digest and returns the value as a byte[].
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest
*/
public static byte[] sha256(String secret, byte[] data) {
return digest(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-256 digest and returns the value as a byte[].
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest
* @throws IOException On error reading from the stream
*/
public static byte[] sha256(String secret, String data) throws IOException {
return digest(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-256 digest and returns the value as a hex string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest as a hex string
*/
public static String sha256Hex(String secret, byte[] data) {
return digestHex(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-256 digest and returns the value as a hex string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest as a hex string
*/
public static String sha256Hex(String secret, String data) {
return digestHex(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-256 digest and returns the value as a base64 string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest as a base64 string
*/
public static String sha256Base64(String secret, byte[] data) {
return digestBase64(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-256 digest and returns the value as a base64 string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-256 digest as a base64 string
*/
public static String sha256Base64(String secret, String data) {
return digestBase64(HMAC_SHA256, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a byte[].
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest
*/
public static byte[] sha512(String secret, byte[] data) {
return digest(HMAC_SHA512, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a byte[].
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest
* @throws IOException On error reading from the stream
*/
public static byte[] sha512(String secret, String data) throws IOException {
return digest(HMAC_SHA512, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a hex string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest as a hex string
*/
public static String sha512Hex(String secret, byte[] data) {
return digestHex(HMAC_SHA512, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a hex string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest as a hex string
*/
public static String sha512Hex(String secret, String data) {
return digestHex(HMAC_SHA512, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a base64 string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest as a base64 string
*/
public static String sha512Base64(String secret, byte[] data) {
return digestBase64(HMAC_SHA512, secret, data);
}
/**
* Calculates the SHA-512 digest and returns the value as a base64 string.
*
* @param secret the secret string
* @param data Data to digest
* @return SHA-512 digest as a base64 string
*/
public static String sha512Base64(String secret, String data) {
return digestBase64(HMAC_SHA512, secret, data);
}
}