import java.security.MessageDigest;
public class EncryptionDecryptionUtil {
private enum DigestType {
MD5("MD5"), SHA("SHA"), SHA256("SHA-256"), SHA512("SHA-512");
private String digestDesc;
private DigestType(String digestDesc) {
this.digestDesc = digestDesc;
}
public String getDigestDesc() {
return digestDesc;
}
}
private final static String digest(String sourceStr, DigestType type) {
char hexDigits[] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
try {
byte[] btInput = sourceStr.getBytes();
// 获得MD5摘要算法的MessageDigest对象
MessageDigest mdInst = MessageDigest.getInstance(type.digestDesc);
// 使用指定的字节更新摘要
mdInst.update(btInput);
// 获得密文
byte[] md = mdInst.digest();
// 将密文转换成十六进制的字符串形式
int j = md.length;
char str[] = new char[j * 2];
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
return new String(str);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public final static String MD5(String s) {
return digest(s, DigestType.MD5);
}
public final static String SHA(String s) {
return digest(s, DigestType.SHA);
}
public final static String SHA256(String s) {
return digest(s, DigestType.SHA256);
}
public final static String SHA512(String s) {
return digest(s, DigestType.SHA512);
}
}
常用工具(十八)--md5 sha1 sha256 sha512 工具类
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转载自blog.csdn.net/qq_36382679/article/details/113560721
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