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个字符 public static String encrypt_md5_hex(String str) { return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_HEX); } //24个字符 public static String encrypt_md5_base64(String str) { return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_BASE64); } //22个字符 public static String encrypt_md5_base58(String str) { return encrypt_hash_function(str, ALGORITHM_MD5, CHAT_SET_UTF8, ENCODE_STRING_BASE58); } //40个字符 public static String encrypt_sha1_hex(String str) { return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_HEX); } //28个字符 public static String encrypt_sha1_base64(String str) { return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_BASE64); } //28个字符 public static String encrypt_sha1_base58(String str) { return encrypt_hash_function(str, ALGORITHM_SHA1, CHAT_SET_UTF8, ENCODE_STRING_BASE58); } //64个字符 public static String encrypt_sha256_hex(String str) { return encrypt_hash_function(str, ALGORITHM_SHA256, CHAT_SET_UTF8, ENCODE_STRING_HEX); } //44个字符 public static String encrypt_sha256_base64(String str) { return encrypt_hash_function(str, ALGORITHM_SHA256, CHAT_SET_UTF8, ENCODE_STRING_BASE64); } //44个字符 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()); } }