Java BASE58 and MD5,SHA256,SHA1

Source: Internet
Author: User
Tags sha1


package cn.ubibi.wsblog.utils;
 
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
 



public class Base58 {
 
    private static final char[] ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz".toCharArray();
    private static final int[] INDEXES = new int[128];
 
    static {
        for (int i = 0; i < INDEXES.length; i++) {
            INDEXES[i] = -1;
        }
        for (int i = 0; i < ALPHABET.length; i++) {
            INDEXES[ALPHABET[i]] = i;
        }
    }
 
    /**
     * Encodes the given bytes in base58. No checksum is appended.
     */
    public static String encode(byte[] input) {
        if (input.length == 0) {
            return "";
        }
        input = copyOfRange(input, 0, input.length);
        // Count leading zeroes.
        int zeroCount = 0;
        while (zeroCount < input.length && input[zeroCount] == 0) {
            ++zeroCount;
        }
        // The actual encoding.
        byte[] temp = new byte[input.length * 2];
        int j = temp.length;
 
        int startAt = zeroCount;
        while (startAt < input.length) {
            byte mod = divmod58(input, startAt);
            if (input[startAt] == 0) {
                ++startAt;
            }
            temp[--j] = (byte) ALPHABET[mod];
        }
 
        // Strip extra ‘1‘ if there are some after decoding.
        while (j < temp.length && temp[j] == ALPHABET[0]) {
            ++j;
        }
        // Add as many leading ‘1‘ as there were leading zeros.
        while (--zeroCount >= 0) {
            temp[--j] = (byte) ALPHABET[0];
        }
 
        byte[] output = copyOfRange(temp, j, temp.length);
        try {
            return new String(output, "US-ASCII");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);  // Cannot happen.
        }
    }
 
    public static byte[] decode(String input) throws IllegalArgumentException {
        if (input.length() == 0) {
            return new byte[0];
        }
        byte[] input58 = new byte[input.length()];
        // Transform the String to a base58 byte sequence
        for (int i = 0; i < input.length(); ++i) {
            char c = input.charAt(i);
 
            int digit58 = -1;
            if (c >= 0 && c < 128) {
                digit58 = INDEXES[c];
            }
            if (digit58 < 0) {
                throw new IllegalArgumentException("Illegal character " + c + " at " + i);
            }
 
            input58[i] = (byte) digit58;
        }
        // Count leading zeroes
        int zeroCount = 0;
        while (zeroCount < input58.length && input58[zeroCount] == 0) {
            ++zeroCount;
        }
        // The encoding
        byte[] temp = new byte[input.length()];
        int j = temp.length;
 
        int startAt = zeroCount;
        while (startAt < input58.length) {
            byte mod = divmod256(input58, startAt);
            if (input58[startAt] == 0) {
                ++startAt;
            }
 
            temp[--j] = mod;
        }
        // Do no add extra leading zeroes, move j to first non null byte.
        while (j < temp.length && temp[j] == 0) {
            ++j;
        }
 
        return copyOfRange(temp, j - zeroCount, temp.length);
    }
 
    public static BigInteger decodeToBigInteger(String input) throws IllegalArgumentException {
        return new BigInteger(1, decode(input));
    }
 
    //
    // number -> number / 58, returns number % 58
    //
    private static byte divmod58(byte[] number, int startAt) {
        int remainder = 0;
        for (int i = startAt; i < number.length; i++) {
            int digit256 = (int) number[i] & 0xFF;
            int temp = remainder * 256 + digit256;
 
            number[i] = (byte) (temp / 58);
 
            remainder = temp % 58;
        }
 
        return (byte) remainder;
    }
 
    //
    // number -> number / 256, returns number % 256
    //
    private static byte divmod256(byte[] number58, int startAt) {
        int remainder = 0;
        for (int i = startAt; i < number58.length; i++) {
            int digit58 = (int) number58[i] & 0xFF;
            int temp = remainder * 58 + digit58;
 
            number58[i] = (byte) (temp / 256);
 
            remainder = temp % 256;
        }
 
        return (byte) remainder;
    }
 
    private static byte[] copyOfRange(byte[] source, int from, int to) {
        byte[] range = new byte[to - from];
        System.arraycopy(source, from, range, 0, range.length);
 
        return range;
    }
 
 
}
 
 
Package cn.ubibi.wsblog.utils;

Import org.slf4j.Logger;
Import org.slf4j.LoggerFactory;

Import java.security.MessageDigest;
Import java.util.Base64;

Public class CryptoUtils {

    Private static final Logger LOGGER = LoggerFactory.getLogger(CryptoUtils.class);

    Private static final String ALGORITHM_MD5 = "MD5";
    Private static final String ALGORITHM_SHA256 = "SHA-256";
    Private static final String ALGORITHM_SHA1 = "SHA-1";
    Private static final String CHAT_SET_UTF8 = "UTF-8";
    Private static final String ENCODE_STRING_HEX = "hex";
    Private static final String ENCODE_STRING_BASE64 = "base64";
    Private static final String ENCODE_STRING_BASE58 = "base58";


    //32 characters
    Public static String encrypt_md5_hex(String str) {
        Return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_HEX);
    }

    //24 characters
    Public static String encrypt_md5_base64(String str) {
        Return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_BASE64);
    }

    //22 characters
    Public static String encrypt_md5_base58(String str) {
        Return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_BASE58);
    }

    //40 characters
    Public static String encrypt_sha1_hex(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_HEX);
    }


    //28 characters
    Public static String encrypt_sha1_base64(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_BASE64);
    }

    //28 characters
    Public static String encrypt_sha1_base58(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_BASE58);
    }


    //64 characters
    Public static String encrypt_sha256_hex(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA256, CHAT_SET_UTF8, ENCODE_STRING_HEX);
    }

    //44 characters
    Public static String encrypt_sha256_base64(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA256, CHAT_SET_UTF8, ENCODE_STRING_BASE64);
    }

    //44 characters
    Public static String encrypt_sha256_base58(String str) {
        Return encrypt_hash_function(str, ALGORITHM_SHA256, CHAT_SET_UTF8, ENCODE_STRING_BASE58);
    }


    Private static String encrypt_hash_function(String str, String algorithm, String chatset, String encodeMethod) {
        MessageDigest messageDigest;
        String encodeStr = "";
        Try {
            messageDigest = MessageDigest.getInstance(algorithm);
            messageDigest.update(str.getBytes(chatset));

            Byte[] digest_bytes = messageDigest.digest();

            If (ENCODE_STRING_BASE64.equals(encodeMethod)) {
                encodeStr = byte2Base64(digest_bytes);
            } else if (ENCODE_STRING_BASE58.equals(encodeMethod)) {
                encodeStr = Base58.encode(digest_bytes);
            } else {
                encodeStr = byte2Hex(digest_bytes);
            }

        } catch (Exception e) {
            LOGGER.error("", e);
        }
        Return encodeStr;
    }


    Private static String byte2Base64(byte[] bytes) {
        Return Base64.getEncoder().encodeToString(bytes);
    }


    Private static String byte2Hex(byte[] bytes) {
        StringBuffer stringBuffer = new StringBuffer();
        String temp;
        For (int i = 0; i < bytes.length; i++) {
            Temp = Integer.toHexString(bytes[i] & 0xFF);
            If (temp.length() == 1) {
                stringBuffer.append("0");
            }
            stringBuffer.append(temp);
        }
        Return stringBuffer.toString();
    }


    Public static void main(String[] args) {
        String x = encrypt_sha256_base58("12345");
        System.out.println(x);
        System.out.println(x.length());
    }

}


Java BASE58 and MD5,SHA256,SHA1


Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.