java 加解密(3DES)
程序员文章站
2022-06-14 20:47:07
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package com.paic.umap.ucm.common.utils; import java.security.MessageDigest; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; import org.bouncycastle.util.encoders.Base64; public class LoginDesUtil { public static final String ALGORITHM_DES = "DESede/ECB/PKCS5Padding"; public static final String ZZGJSPWDKEY = "1HH798GZDKUO2167W5GM5YNG"; /** * 3DES加密方法 * * @param value 待加密信息 * @param desKey 密钥 * @return 3DES加密后用Base64编码的字符串 */ public static String encrypt(String value, String desKey) { String result = null; try { SecretKeySpec key = new SecretKeySpec(desKey.getBytes(), 0, 24, "DESede"); Cipher cipher = Cipher.getInstance(ALGORITHM_DES); cipher.init(Cipher.ENCRYPT_MODE, key); result = new String(Base64.encode(cipher.doFinal(value.getBytes("UTF-8"))), "UTF-8"); } catch (Exception e) { } return result; } /** * 3DES解密方法 * * @param value 3DES加密后用Base64编码的字符串 * @param desKey 密钥 * @return 加密原文 */ public static String decrypt(String value, String desKey) { String result = null; try { SecretKeySpec key = new SecretKeySpec(desKey.getBytes(), 0, 24, "DESede"); Cipher cipher = Cipher.getInstance(ALGORITHM_DES); cipher.init(Cipher.DECRYPT_MODE, key); result = new String(cipher.doFinal(Base64.decode(value)), "UTF-8"); } catch (Exception e) { } return result; } public static void main(String[] args) { String result="+= +=//"; result = result.replaceAll("[+]", "%2B"); result = result.replaceAll("[/]", "%2F"); result = result.replaceAll("[=]", "%3D"); result = result.replaceAll("[ ]", "%20"); System.out.println(result); result = result.replaceAll("%2F", "/"); result = result.replaceAll("%3D", "="); result = result.replaceAll("%20", " "); result = result.replaceAll("%2B", "+"); System.out.println(result); System.out.println(LoginDesUtil.encryptToURL("!@#+/\\$ %^&*()[]{}【】|!金jin123", ZZGJSPWDKEY)); System.out.println(LoginDesUtil.decryptToURL(LoginDesUtil.encryptToURL("!@#+/\\$ %^&*()[]{}【】|!金jin123", ZZGJSPWDKEY), ZZGJSPWDKEY)); } /** * 3Des的key加密(建议优先考虑) ,用于加密的URL使用 * @param value 待加密信息 * @return 3DES加密后用Base64编码的字符串 */ public static String encryptToURL(String value, String key){ String result = encrypt(value, key); // 将加密后字符串中“+”、“/”、“=”转换成替代字符串 result = result.replaceAll("[+]", "%2B"); result = result.replaceAll("[/]", "%2F"); result = result.replaceAll("[=]", "%3D"); result = result.replaceAll("[ ]", "%20"); return result; } /** * 3Des使用默认的key解密URL (建议优先考虑) * @param value 3DES加密后用Base64编码的字符串 * @return 加密原文 */ public static String decryptToURL(String value,String key){ String result = value.replaceAll("%2B", "+"); result = result.replaceAll("%2F", "/"); result = result.replaceAll("%3D", "="); result = result.replaceAll("%20", " "); result = decrypt(result, key); return result; } /** * 3Des使用默认的key解密 * @param value 待解密信息 * @return 3DES加密后用Base64编码的字符串 */ public static String decryptToZZGJS(String value){ return decrypt(value, ZZGJSPWDKEY); } public static String sign(String text, String sign) { String sha1 = null; try { MessageDigest md = MessageDigest.getInstance("SHA1"); md.update(text.getBytes()); sha1 = byte2string(md.digest()); } catch (Exception e) { } return sha1; } private static String byte2string(byte[] data) { StringBuffer sb = new StringBuffer(); char[] hex = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; for(int i = 0; i < data.length; i++) { char[] t = new char[2]; t[0] = hex[(data[i] >>> 4) & 0x0F]; t[1] = hex[data[i] & 0x0F]; sb.append(t); } return sb.toString(); } }
引用
http://dcloud.pa18.com/Citrix/XenApp/auth/silentDetection.aspx