依赖于java.security.MessageDigest,支持MD5,SHA-1,SHA-256
1 import java.security.MessageDigest; 2 import java.security.NoSuchAlgorithmException; 3 4 /** 5 * CiphertextUtil 6 * 7 * @author ysj 8 */ 9 public class CiphertextUtil { 10 public static final String MD5 = "MD5"; 11 public static final String SHA_1 = "SHA-1"; 12 public static final String SHA_256 = "SHA-256"; 13 private static final char[] CH_HEX = {'0', '1', '2', '3', '4', '5', '6', '7', '8', 14 '9', 'A', 'B', 'C', 'D', 'E', 'F'}; 15 16 /** 17 * 加密字符串 18 * 19 * @param sourceStr 需要加密目标字符串 20 * @param algorithmsName 算法名称(如:MD5,SHA-1,SHA-256) 21 * @return 22 */ 23 public static String passAlgorithmsCiphering(String sourceStr,String algorithmsName){ 24 String password = ""; 25 MessageDigest md; 26 try { 27 md = MessageDigest.getInstance(algorithmsName); 28 // 使用指定byte[]更新摘要 29 md.update(sourceStr.getBytes()); 30 // 完成计算，返回结果数组 31 byte[] b = md.digest(); 32 password = byteArrayToHex(b); 33 } catch (NoSuchAlgorithmException e) { 34 e.printStackTrace(); 35 } 36 return password; 37 } 38 39 /** 40 * 将字节数组转为十六进制字符串 41 * 42 * @param bytes 43 * @return 返回16进制字符串 44 */ 45 private static String byteArrayToHex(byte[] bytes) { 46 // 一个字节占8位，一个十六进制字符占4位；十六进制字符数组的长度为字节数组长度的两倍 47 char[] chars = new char[bytes.length * 2]; 48 int index = 0; 49 for (byte b : bytes) { 50 // 取字节的高4位 51 chars[index++] = CH_HEX[b >>> 4 & 0xf]; 52 // 取字节的低4位 53 chars[index++] = CH_HEX[b & 0xf]; 54 } 55 return new String(chars); 56 } 57 }
依赖于org.apache.commons.codec.digest.DigestUtils,支持MD2,MD5,SHA-1,SHA-256,SHA-384,SHA-512
Apache下载地址:http://commons.apache.org/proper/commons-codec/download_codec.cgi
1 import org.apache.commons.codec.digest.DigestUtils; 2 3 /** 4 * CiphertextUtil 5 * 6 * @author ysj 7 */ 8 public class CiphertextUtil { 9 public static final String MD2 = "MD2"; 10 public static final String MD5 = "MD5"; 11 public static final String SHA_1 = "SHA1"; 12 public static final String SHA_256 = "SHA256"; 13 public static final String SHA_384 = "SHA384"; 14 public static final String SHA_512 = "SHA512"; 15 16 /** 17 * 加密字符串 18 * 19 * @param sourceStr 需要加密目标字符串 20 * @param algorithmsName 算法名称(如:MD2,MD5,SHA1,SHA256,SHA384,SHA512) 21 * @return 22 */ 23 public static String passAlgorithmsCiphering(String sourceStr,String algorithmsName){ 24 String password = ""; 25 switch(algorithmsName){ 26 case "MD2": 27 password = DigestUtils.md2Hex(sourceStr); 28 break; 29 case "MD5": 30 password = DigestUtils.md5Hex(sourceStr); 31 break; 32 case "SHA1": 33 password = DigestUtils.sha1Hex(sourceStr); 34 break; 35 case "SHA256": 36 password = DigestUtils.sha256Hex(sourceStr); 37 break; 38 case "SHA384": 39 password = DigestUtils.sha384Hex(sourceStr); 40 break; 41 case "SHA512": 42 password = DigestUtils.sha512Hex(sourceStr); 43 break; 44 } 45 return password; 46 } 47 }