구조 사의 sha 암호 화 복호화
19126 단어 암호 화 복호화
제목 과 같다.
2.코드.
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* reference apache commons <a
* href="http://commons.apache.org/codec/">http://commons.apache.org/codec/</a>
*
* support MD2/MD5/SHA/SHA256/SHA384/SHA512
* @author Aub
*
*/
public class DigestUtils {
/**
*
*
* @param algorithm
*
* @return
* @see MessageDigest#getInstance(String)
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
static MessageDigest getDigest(String algorithm) {
try {
return MessageDigest.getInstance(algorithm);
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e.getMessage());
}
}
/**
* MD5
*
* @return MD5
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static MessageDigest getMd5Digest() {
return getDigest("MD5");
}
/**
* SHA-1
*
* @return SHA-1
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static MessageDigest getShaDigest() {
return getDigest("SHA");
}
/**
* SHA-256
*
* @return SHA-256
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static MessageDigest getSha256Digest() {
return getDigest("SHA-256");
}
/**
* SHA-384
*
* @return SHA-384
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static MessageDigest getSha384Digest() {
return getDigest("SHA-384");
}
/**
* SHA-512
*
* @return SHA-512
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static MessageDigest getSha512Digest() {
return getDigest("SHA-512");
}
/**
* MD5
*
* @param data
*
* @return （ 16 ）
*/
public static byte[] encodeMD5(byte[] data) {
return getMd5Digest().digest(data);
}
/**
* MD5
*
* @param data
*
* @return （ 32 ）
*/
public static String encodeMD5Hex(byte[] data) {
return Hex.encodeHexStr(encodeMD5(data));
}
/**
* SHA-1
*
* @param data
*
* @return SHA-1 （ 20 ）
*/
public static byte[] encodeSHA(byte[] data) {
return getShaDigest().digest(data);
}
/**
* SHA-1
*
* @param data
*
* @return SHA-1 （ 40 ）
*/
public static String encodeSHAHex(byte[] data) {
return Hex.encodeHexStr(getShaDigest().digest(data));
}
/**
* SHA-256
*
* @param data
*
* @return SHA-256 （ 32 ）
*/
public static byte[] encodeSHA256(byte[] data) {
return getSha256Digest().digest(data);
}
/**
* SHA-256
*
* @param data
*
* @return SHA-256 （ 64 ）
*/
public static String encodeSHA256Hex(byte[] data) {
return Hex.encodeHexStr(encodeSHA256(data));
}
/**
* SHA-384
*
* @param data
*
* @return SHA-384 （ 43 ）
*/
public static byte[] encodeSHA384(byte[] data) {
return getSha384Digest().digest(data);
}
/**
* SHA-384
*
* @param data
*
* @return SHA-384 （ 86 ）
*/
public static String encodeSHA384Hex(byte[] data) {
return Hex.encodeHexStr(encodeSHA384(data));
}
/**
* SHA-512
*
* @param data
*
* @return SHA-512 （ 64 ）
*/
public static byte[] encodeSHA512(byte[] data) {
return getSha512Digest().digest(data);
}
/**
* SHA-512
*
* @param data
*
* @return SHA-512 （ 128 ）
*/
public static String encodeSHA512Hex(byte[] data) {
return Hex.encodeHexStr(encodeSHA512(data));
}
}
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.KeyGenerator;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
/**
* Hmac<br/>
* algorithm HmacMD5/HmacSHA/HmacSHA256/HmacSHA384/HmacSHA512
* @author Aub
*/
public class Hmac {
/**
*
*
* @param algorithm
*
* @return
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
private static byte[] getHmacKey(String algorithm){
// KeyGenerator
KeyGenerator keyGenerator = null;
try {
keyGenerator = KeyGenerator.getInstance(algorithm);
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e.getMessage());
}
//
SecretKey secretKey = keyGenerator.generateKey();
//
return secretKey.getEncoded();
}
/**
* HmaMD5
*
* @return HmaMD5
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
public static byte[] getHmaMD5key(){
return getHmacKey("HmacMD5");
}
/**
* HmaSHA
*
* @return HmaSHA
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
public static byte[] getHmaSHAkey(){
return getHmacKey("HmacSHA1");
}
/**
* HmaSHA256
*
* @return HmaSHA256
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
public static byte[] getHmaSHA256key(){
return getHmacKey("HmacSHA256");
}
/**
* HmaSHA384
*
* @return HmaSHA384
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
public static byte[] getHmaSHA384key(){
return getHmacKey("HmacSHA384");
}
/**
* HmaSHA512
*
* @return HmaSHA384
* @throws RuntimeException
* {@link java.security.NoSuchAlgorithmException}
*/
public static byte[] getHmaSHA512key(){
return getHmacKey("HmacSHA512");
}
/**
*
*
* @param key
* @param algorithm
* @return
*/
private static Key toKey(byte[] key,String algorithm){
//
return new SecretKeySpec(key, algorithm);
}
/**
* HmacMD5
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacMD5(byte[] data, Key key){
Mac mac = null;
try {
mac = Mac.getInstance("HmacMD5");
mac.init(key);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return new byte[0];
}catch (InvalidKeyException e) {
e.printStackTrace();
return new byte[0];
}
return mac.doFinal(data);
}
/**
* HmacMD5
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacMD5(byte[] data, byte[] key){
Key k = toKey(key, "HmacMD5");
return encodeHmacMD5(data, k);
}
/**
* HmacSHA
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA(byte[] data, Key key){
Mac mac = null;
try {
mac = Mac.getInstance("HmacSHA1");
mac.init(key);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return new byte[0];
}catch (InvalidKeyException e) {
e.printStackTrace();
return new byte[0];
}
return mac.doFinal(data);
}
/**
* HmacSHA
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA(byte[] data, byte[] key){
Key k = toKey(key, "HmacSHA1");
return encodeHmacSHA(data, k);
}
/**
* HmacSHA256
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA256(byte[] data, Key key){
Mac mac = null;
try {
mac = Mac.getInstance("HmacSHA256");
mac.init(key);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return new byte[0];
}catch (InvalidKeyException e) {
e.printStackTrace();
return new byte[0];
}
return mac.doFinal(data);
}
/**
* HmacSHA256
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA256(byte[] data, byte[] key){
Key k = toKey(key, "HmacSHA256");
return encodeHmacSHA256(data, k);
}
/**
* HmacSHA384
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA384(byte[] data, Key key){
Mac mac = null;
try {
mac = Mac.getInstance("HmacSHA384");
mac.init(key);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return new byte[0];
}catch (InvalidKeyException e) {
e.printStackTrace();
return new byte[0];
}
return mac.doFinal(data);
}
/**
* HmacSHA384
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA384(byte[] data, byte[] key){
Key k = toKey(key, "HmacSHA384");
return encodeHmacSHA384(data, k);
}
/**
* HmacSHA512
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA512(byte[] data, Key key){
Mac mac = null;
try {
mac = Mac.getInstance("HmacSHA512");
mac.init(key);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return new byte[0];
}catch (InvalidKeyException e) {
e.printStackTrace();
return new byte[0];
}
return mac.doFinal(data);
}
/**
* HmacSHA512
*
* @param data
* @param key
* @return （ 16 ）
*/
public static byte[] encodeHmacSHA512(byte[] data, byte[] key){
Key k = toKey(key, "HmacSHA512");
return encodeHmacSHA512(data, k);
}
private static String showByteArray(byte[] data){
if(null == data){
return null;
}
StringBuilder sb = new StringBuilder("{");
for(byte b:data){
sb.append(b).append(",");
}
sb.deleteCharAt(sb.length()-1);
sb.append("}");
return sb.toString();
}
public static void main(String[] args) {
// byte[] key = getHmaMD5key();
// byte[] key = getHmaSHAkey();
// byte[] key = getHmaSHA256key();
// byte[] key = getHmaSHA384key();
byte[] key = getHmaSHA512key();
System.out.println(" : byte[]:"+showByteArray(key).length());
String data = "Mac ";
System.out.println(" : string:"+data);
System.out.println(" : byte[]:"+showByteArray(data.getBytes()));
System.out.println();
// byte[] encodeData = encodeHmacMD5(data.getBytes(), key);
// byte[] encodeData = encodeHmacSHA(data.getBytes(), key);
// byte[] encodeData = encodeHmacSHA256(data.getBytes(), key);
// byte[] encodeData = encodeHmacSHA384(data.getBytes(), key);
byte[] encodeData = encodeHmacSHA512(data.getBytes(), key);
System.out.println(" : byte[]:"+showByteArray(encodeData).length());
System.out.println(" : byte[]:"+encodeData.length);
System.out.println(" : hexStr:"+Hex.encodeHexStr(encodeData));
System.out.println();
}
}
/**
* reference apache commons <a
* href="http://commons.apache.org/codec/">http://commons.apache.org/codec/</a>
*
* @author Aub
*
*/
public class Hex {
/**
*
*/
private static final char[] DIGITS_LOWER = { '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
/**
*
*/
private static final char[] DIGITS_UPPER = { '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
/**
*
*
* @param data
* byte[]
* @return char[]
*/
public static char[] encodeHex(byte[] data) {
return encodeHex(data, true);
}
/**
*
*
* @param data
* byte[]
* @param toLowerCase
* <code>true</code> ， <code>false</code>
* @return char[]
*/
public static char[] encodeHex(byte[] data, boolean toLowerCase) {
return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
}
/**
*
*
* @param data
* byte[]
* @param toDigits
* char[]
* @return char[]
*/
protected static char[] encodeHex(byte[] data, char[] toDigits) {
int l = data.length;
char[] out = new char[l << 1];
// two characters form the hex value.
for (int i = 0, j = 0; i < l; i++) {
out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
out[j++] = toDigits[0x0F & data[i]];
}
return out;
}
/**
*
*
* @param data
* byte[]
* @return String
*/
public static String encodeHexStr(byte[] data) {
return encodeHexStr(data, true);
}
/**
*
*
* @param data
* byte[]
* @param toLowerCase
* <code>true</code> ， <code>false</code>
* @return String
*/
public static String encodeHexStr(byte[] data, boolean toLowerCase) {
return encodeHexStr(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
}
/**
*
*
* @param data
* byte[]
* @param toDigits
* char[]
* @return String
*/
protected static String encodeHexStr(byte[] data, char[] toDigits) {
return new String(encodeHex(data, toDigits));
}
/**
*
*
* @param data
* char[]
* @return byte[]
* @throws RuntimeException
* ，
*/
public static byte[] decodeHex(char[] data) {
int len = data.length;
if ((len & 0x01) != 0) {
throw new RuntimeException("Odd number of characters.");
}
byte[] out = new byte[len >> 1];
// two characters form the hex value.
for (int i = 0, j = 0; j < len; i++) {
int f = toDigit(data[j], j) << 4;
j++;
f = f | toDigit(data[j], j);
j++;
out[i] = (byte) (f & 0xFF);
}
return out;
}
/**
*
*
* @param ch
* char
* @param index
*
* @return
* @throws RuntimeException
* ch ，
*/
protected static int toDigit(char ch, int index) {
int digit = Character.digit(ch, 16);
if (digit == -1) {
throw new RuntimeException("Illegal hexadecimal character " + ch
+ " at index " + index);
}
return digit;
}
public static void main(String[] args) {
String srcStr = " ";
String encodeStr = encodeHexStr(srcStr.getBytes());
String decodeStr = new String(decodeHex(encodeStr.toCharArray()));
System.out.println(" ：" + srcStr);
System.out.println(" ：" + encodeStr);
System.out.println(" ：" + decodeStr);
}
}
다음으로 이동:http://blog.163.com/yxhui_cool/blog/static/770197702012291433339/
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