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());
} }