MD5 encoding

最新推荐文章于 2022-01-10 17:28:18 发布

原创最新推荐文章于 2022-01-10 17:28:18 发布 · 1.2k 阅读

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/**
 * 16byte MD5 encoding
 * 
 * @param plainText
 * @return
 */
public static String md5s(String str) {
    MessageDigest digest = null;
    String md5Str = new String();
    try {
        digest = MessageDigest.getInstance("MD5");
        digest.update(str.getBytes("UTF-8"));
        byte[] byteArray = digest.digest();
        md5Str = byteArrayToHexString(byteArray);
    } catch (NoSuchAlgorithmException e) {
    } catch (UnsupportedEncodingException e) {
    }
    return md5Str;
}

public static String byteArrayToHexString(byte[] b) {
    StringBuffer resultSb = new StringBuffer();
    for (int i = 0; i < b.length; i++) {
        resultSb.append(byteToHexString(b[i]));
    }
    return resultSb.toString();
}

private static String byteToHexString(byte b) {
    int n = b;
    if (n < 0)
        n = 256 + n;
    int d1 = n / 16;
    int d2 = n % 16;
    return strDigits[d1] + strDigits[d2];
}


public static String encode(String inStr) {
    String outStr = "";
    try {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        outStr = new String(Base64Utils.encode(md5.digest(inStr.getBytes("utf-8"))));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return outStr;
}