MD5加密代码
public static String md5(String value) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] byteDigest = md.digest(value.getBytes(StandardCharsets.UTF_8));
StringBuffer sb = new StringBuffer();
for (byte b : byteDigest) {
sb.append(Integer.toHexString((b & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString();
} catch (NoSuchAlgorithmException e) {
Logger.getLogger("").info("MD5加密失败!");
}
return "";
}
SHA-1加密代码
public static String SHA1(final String value) {
MessageDigest digest;
try {
digest = java.security.MessageDigest.getInstance("SHA-1");
digest.update(value.getBytes());
byte messageDigest[] = digest.digest();
StringBuffer hexString = new StringBuffer();
for (int i = 0; i < messageDigest.length; i++) {
String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
if (shaHex.length() < 2) {
hexString.append(0);
}
hexString.append(shaHex);
}
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
Logger.getLogger("").info("SHA1 安全哈希算法加密失败!");
}
return "";
}
测试
public static void main(String args[]) {
String md5 = md5("This a md5 test!");
System.out.println(md5); // fdedaafb043d41ff06b6ef249ef53be9
String sha1 = SHA1("This a sha1 test!");
System.out.println(sha1); // 46a7ff34d0625f5562093f67a6e4fd68e9d7b352
}
