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/*
* Copyright 2015 The FireNio Project
*
* Licensed 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 com.firenio.common;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
/**
* @author wangkai
*/
public class Cryptos {
static final ThreadLocal mdh = new ThreadLocal() {
protected Cryptos initialValue() {
return new Cryptos();
}
};
/**
* This array is the analogue of base64ToInt, but for the nonstandard
* variant that avoids the use of uppercase alphabetic characters.
*/
private static final byte[] altBase64ToInt = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, 62, 9, 10, 11, -1, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 12, 13, 14, -1, 15, 63, 16, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, -1, 18, 19, 21, 20, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 22, 23, 24, 25};
/**
* This array is a lookup table that translates unicode characters drawn
* from the "Base64 Alphabet" (as specified in Table 1 of RFC 2045) into
* their 6-bit positive integer equivalents. Characters that are not in the
* Base64 alphabet but fall within the bounds of the array are translated
* to -1.
*/
private static final byte[] base64ToInt = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51};
/**
* This array is a lookup table that translates 6-bit positive integer
* index values into their "Alternate Base64 Alphabet" equivalents. This is
* NOT the real Base64 Alphabet as per in Table 1 of RFC 2045. This
* alternate alphabet does not use the capital letters. It is designed for
* use in environments where "case folding" occurs.
*/
private static final char[] intToAltBase64 = {'!', '"', '#', '$', '%', '&', '\'', '(', ')', ',', '-', '.', ':', ';', '<', '>', '@', '[', ']', '^', '`', '_', '{', '|', '}', '~', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '?'};
/**
* This array is a lookup table that translates 6-bit positive integer
* index values into their "Base64 Alphabet" equivalents as specified in
* Table 1 of RFC 2045.
*/
private static final char[] intToBase64 = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'};
private Map digests = new HashMap<>();
public static byte[] aes_de(byte[] content, byte[] password) throws Exception {
// 创建AES的Key生产者
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
random.setSeed(password);
kgen.init(128, random);
// 根据用户密码，生成一个密钥
SecretKey secretKey = kgen.generateKey();
// 返回基本编码格式的密钥
byte[] enCodeFormat = secretKey.getEncoded();
// 转换为AES专用密钥
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
// 创建密码器
Cipher cipher = Cipher.getInstance("AES");
// 初始化为解密模式的密码器
cipher.init(Cipher.DECRYPT_MODE, key);
return cipher.doFinal(content);
}
public static String aes_de(String content, String password) throws Exception {
return aes_de(content, password, Util.UTF8);
}
public static String aes_de(String content, String password, Charset charset) throws Exception {
byte[] contentBytes = ByteUtil.getBytesFromHexString(content);
byte[] passowrdBytes = password.getBytes(charset);
byte[] res = aes_de(contentBytes, passowrdBytes);
return new String(res, charset);
}
public static byte[] aes_en(byte[] content, byte[] password) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");// 创建AES的Key生产者
// 利用用户密码作为随机数初始化出,128位的key生产者
//加密没关系，SecureRandom是生成安全随机数序列，password.readBytes()是种子，只要种子相同，序列就一样，所以解密只要有password就行
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
random.setSeed(password);
kgen.init(128, random);
SecretKey secretKey = kgen.generateKey();// 根据用户密码，生成一个密钥
// 返回基本编码格式的密钥，如果此密钥不支持编码，则返回null
byte[] enCodeFormat = secretKey.getEncoded();
// 转换为AES专用密钥
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
// 创建密码器
Cipher cipher = Cipher.getInstance("AES");
// 初始化为加密模式的密码器
cipher.init(Cipher.ENCRYPT_MODE, key);
// 加密
return cipher.doFinal(content);
}
public static String aes_en(String content, String password) throws Exception {
return aes_en(content, password, Util.UTF8);
}
public static String aes_en(String content, String password, Charset charset) throws Exception {
byte[] contentBytes = content.getBytes(charset);
byte[] passwordBytes = password.getBytes(charset);
byte[] res = aes_en(contentBytes, passwordBytes);
return ByteUtil.getHexString(res);
}
/**
* Translates the specified "alternate representation" Base64 string into a
* byte array.
*/
public static byte[] alt_base64_de(String s) {
return base64_de(s, true);
}
/**
* Translates the specified byte array into an "alternate representation"
* Base64 string. This non-standard variant uses an alphabet that does not
* contain the uppercase alphabetic characters, which makes it suitable for
* use in situations where case-folding occurs.
*/
public static String alt_base64_en(byte[] a) {
return base64_en(a, true);
}
/**
* Translates the specified Base64 string (as per Preferences.get(byte[]))
* into a byte array.
*/
public static byte[] base64_de(String s) {
return base64_de(s, false);
}
private static byte[] base64_de(String s, boolean alternate) {
byte[] alphaToInt = (alternate ? altBase64ToInt : base64ToInt);
int sLen = s.length();
int numGroups = sLen / 4;
if (4 * numGroups != sLen) {
throw new IllegalArgumentException("String length must be a multiple of four. len=" + sLen);
}
int missingBytesInLastGroup = 0;
int numFullGroups = numGroups;
if (sLen != 0) {
if (s.charAt(sLen - 1) == '=') {
missingBytesInLastGroup++;
numFullGroups--;
}
if (s.charAt(sLen - 2) == '=') {
missingBytesInLastGroup++;
}
}
byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
// Translate all full groups from base64 to byte array elements
int inCursor = 0, outCursor = 0;
for (int i = 0; i < numFullGroups; i++) {
int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
int ch3 = base64toInt(s.charAt(inCursor++), alphaToInt);
result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
result[outCursor++] = (byte) ((ch2 << 6) | ch3);
}
// Translate partial group, if present
if (missingBytesInLastGroup != 0) {
int ch0 = base64toInt(s.charAt(inCursor++), alphaToInt);
int ch1 = base64toInt(s.charAt(inCursor++), alphaToInt);
result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
if (missingBytesInLastGroup == 1) {
int ch2 = base64toInt(s.charAt(inCursor++), alphaToInt);
result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
}
}
// assert inCursor == s.length()-missingBytesInLastGroup;
// assert outCursor == result.length;
return result;
}
/**
* Translates the specified byte array into a Base64 string as per
* Preferences.put(byte[]).
*/
public static String base64_en(byte[] a) {
return base64_en(a, false);
}
private static String base64_en(byte[] a, boolean alternate) {
int aLen = a.length;
int numFullGroups = aLen / 3;
int numBytesInPartialGroup = aLen - 3 * numFullGroups;
int resultLen = 4 * ((aLen + 2) / 3);
StringBuilder result = new StringBuilder(resultLen);
char[] intToAlpha = (alternate ? intToAltBase64 : intToBase64);
// Translate all full groups from byte array elements to Base64
int inCursor = 0;
for (int i = 0; i < numFullGroups; i++) {
int byte0 = a[inCursor++] & 0xff;
int byte1 = a[inCursor++] & 0xff;
int byte2 = a[inCursor++] & 0xff;
result.append(intToAlpha[byte0 >> 2]);
result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
result.append(intToAlpha[(byte1 << 2) & 0x3f | (byte2 >> 6)]);
result.append(intToAlpha[byte2 & 0x3f]);
}
// Translate partial group if present
if (numBytesInPartialGroup != 0) {
int byte0 = a[inCursor++] & 0xff;
result.append(intToAlpha[byte0 >> 2]);
if (numBytesInPartialGroup == 1) {
result.append(intToAlpha[(byte0 << 4) & 0x3f]);
result.append("==");
} else {
// assert numBytesInPartialGroup == 2;
int byte1 = a[inCursor++] & 0xff;
result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
result.append(intToAlpha[(byte1 << 2) & 0x3f]);
result.append('=');
}
}
// assert inCursor == a.length;
// assert result.length() == resultLen;
return result.toString();
}
/**
* Translates the specified character, which is assumed to be in the
* "Base 64 Alphabet" into its equivalent 6-bit positive integer.
*
* @throw IllegalArgumentException or ArrayOutOfBoundsException if c is not
* in the Base64 Alphabet.
*/
private static int base64toInt(char c, byte[] alphaToInt) {
int result = alphaToInt[c];
if (result < 0) {
throw new IllegalArgumentException("Illegal character " + c);
}
return result;
}
private static MessageDigest get(String algorithm) {
return mdh.get().get0(algorithm);
}
public static String get32(String value) {
return get32(value, Util.UTF8);
}
public static String get32(String value, Charset encoding) {
return getMd5_32(value.getBytes(encoding));
}
public static String getMd5_16(String value) {
return getMd5_16(value, Util.UTF8);
}
public static String getMd5_16(String value, Charset encoding) {
return getMd5_32(value.getBytes(encoding)).substring(8, 24);
}
public static String getMd5_32(byte[] array) {
return getMd5_32(array, 0, array.length);
}
public static String getMd5_32(byte[] input, int off, int len) {
return ByteUtil.getHexString(update(input, off, len, "MD5"));
}
public static String getMd5_32(String value) {
return getMd5_32(value, Util.UTF8);
}
public static String getMd5_32(String value, Charset encoding) {
return getMd5_32(value.getBytes(encoding));
}
public static void main(String[] args) throws Exception {
testAes();
testBase64();
testSHA1();
testMd5();
}
public static byte[] SHA1(byte[] decript) {
return Cryptos.update(decript, "SHA-1");
}
public static byte[] SHA1(String decript) {
return SHA1(decript, Util.UTF8);
}
public static byte[] SHA1(String decript, Charset encoding) {
return SHA1(decript.getBytes(encoding));
}
public static byte[] SHA256(byte[] decript) {
return update(decript, "SHA-256");
}
public static byte[] SHA256(String decript) {
return SHA256(decript, Util.UTF8);
}
public static byte[] SHA256(String decript, Charset encoding) {
return SHA256(decript.getBytes(encoding));
}
public static byte[] SHA512(byte[] decript) {
return update(decript, "SHA-512");
}
public static byte[] SHA512(String decript) {
return SHA512(decript, Util.UTF8);
}
public static byte[] SHA512(String decript, Charset encoding) {
return SHA512(decript.getBytes(encoding));
}
public static void testAes() throws Exception {
String text = "test";
String key = "key";
System.out.println("TEXT:" + text);
System.out.println("KEY:" + key);
String mi = aes_en(text, key);
System.out.println("MI:" + mi);
text = aes_de(mi, key);
System.out.println("TEXT:" + text);
}
public static void testBase64() {
String s = new String(base64_de("ODg4ODg4"));
System.out.println(s);
}
static void testMd5() {
System.out.println("md5_16:" + getMd5_16("123456"));
System.out.println("md5_32:" + getMd5_32("123456"));
}
public static void testSHA1() {
String ss = "test2";
long startTime = Util.now();
int count = 1000000;
for (int i = 0; i < count; i++) {
ByteUtil.getHexString(SHA1(ss));
}
System.out.println("Time:" + (Util.past(startTime)));
System.out.println(ByteUtil.getHexString(SHA1(ss)));
System.out.println(ByteUtil.getHexString(SHA256(ss)));
System.out.println(ByteUtil.getHexString(SHA512(ss)));
}
private static byte[] update(byte[] input, int off, int len, String algorithm) {
MessageDigest digest = get(algorithm);
digest.update(input, off, len);
return digest.digest();
}
private static byte[] update(byte[] input, String algorithm) {
return update(input, 0, input.length, algorithm);
}
private MessageDigest get0(String algorithm) {
MessageDigest d = digests.get(algorithm);
if (d == null) {
try {
d = MessageDigest.getInstance(algorithm);
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException(e);
}
digests.put(algorithm, d);
return d;
}
d.reset();
return d;
}
}
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