java.math.BigInteger.toString()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.math.BigInteger.toString()方法的一些代码示例，展示了BigInteger.toString()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BigInteger.toString()方法的具体详情如下：
包路径：java.math.BigInteger
类名称：BigInteger
方法名：toString

BigInteger.toString介绍

[英]Returns a string representation of this BigInteger in decimal form.
[中]以十进制形式返回此BigInteger的字符串表示形式。

代码示例

代码示例来源：origin: stackoverflow.com

import java.security.SecureRandom;
import java.math.BigInteger;

public final class SessionIdentifierGenerator {
 private SecureRandom random = new SecureRandom();

 public String nextSessionId() {
  return new BigInteger(130, random).toString(32);
 }
}

代码示例来源：origin: stackoverflow.com

String plaintext = "your text here";
MessageDigest m = MessageDigest.getInstance("MD5");
m.reset();
m.update(plaintext.getBytes());
byte[] digest = m.digest();
BigInteger bigInt = new BigInteger(1,digest);
String hashtext = bigInt.toString(16);
// Now we need to zero pad it if you actually want the full 32 chars.
while(hashtext.length() < 32 ){
 hashtext = "0"+hashtext;
}

代码示例来源：origin: cucumber/cucumber-jvm

private String checksum(String gherkin) {
  return new BigInteger(1, md5.digest(gherkin.getBytes(UTF8))).toString(16);
}

代码示例来源：origin: stackoverflow.com

BigInteger bi = new BigInteger("76292708057987193002565060032465481997");
System.out.println(bi.toString(16));

代码示例来源：origin: konsoletyper/teavm

private static void testBigInteger() {
  System.out.println("Running BigInteger benchmark");
  BigInteger result = BigInteger.ONE;
  for (int j = 0; j < 100; ++j) {
    long start = System.currentTimeMillis();
    for (int k = 0; k < 5000; ++k) {
      BigInteger a = BigInteger.ZERO;
      BigInteger b = BigInteger.ONE;
      for (int i = 0; i < 1000; ++i) {
        BigInteger c = a.add(b);
        a = b;
        b = c;
      }
      result = a;
    }
    long end = System.currentTimeMillis();
    System.out.println("Operation took " + (end - start) + " milliseconds");
  }
  System.out.println(result.toString());
}

代码示例来源：origin: Curzibn/Luban

@Override
 public String rename(String filePath) {
  try {
   MessageDigest md = MessageDigest.getInstance("MD5");
   md.update(filePath.getBytes());
   return new BigInteger(1, md.digest()).toString(32);
  } catch (NoSuchAlgorithmException e) {
   e.printStackTrace();
  }
  return "";
 }
})

代码示例来源：origin: aa112901/remusic

public static void main3(String[] args) {
  String key = "7b104953fb112826";
  String pubKey = "010001";
  String m = "157794750267131502212476817800345498121872783333389747424011531025366277535262539913701806290766479189477533597854989606803194253978660329941980786072432806427833685472618792592200595694346872951301770580765135349259590167490536138082469680638514416594216629258349130257685001248172188325316586707301643237607";
  try {
    String k = reverse(key);
    String keyTo16 = toHex(k, "GBK");
    // System.out.println(new BigInteger(keyTo16, 16));
    // new BigInteger(keyTo16, 16) 字符串转为16进制数字，
    // pow(Integer.valueOf(pubKey, 16)) 得到次方的值
    //remainder 取余数
    String c = (new BigInteger(keyTo16, 16).pow(Integer.valueOf(pubKey, 16))).remainder(new BigInteger(m)) + "";
    //转为16进制表示
    System.out.println(new BigInteger(c).toString(16));
  } catch (UnsupportedEncodingException e) {
    e.printStackTrace();
  }
}

代码示例来源：origin: mpusher/mpush

private static void test() {
  Pair<RSAPublicKey, RSAPrivateKey> pair = RSAUtils.genKeyPair(RAS_KEY_SIZE);
  //生成公钥和私钥
  RSAPublicKey publicKey = pair.key;
  RSAPrivateKey privateKey = pair.value;
  //模
  String modulus = publicKey.getModulus().toString();
  //公钥指数
  String public_exponent = publicKey.getPublicExponent().toString();
  //私钥指数
  String private_exponent = privateKey.getPrivateExponent().toString();
  //明文
  byte[] ming = "123456789".getBytes(Constants.UTF_8);
  System.out.println("明文：" + new String(ming, Constants.UTF_8));
  //使用模和指数生成公钥和私钥
  RSAPrivateKey priKey = RSAUtils.getPrivateKey(modulus, private_exponent);
  RSAPublicKey pubKey = RSAUtils.getPublicKey(modulus, public_exponent);
  System.out.println("privateKey=" + priKey);
  System.out.println("publicKey=" + pubKey);
  //加密后的密文
  byte[] mi = RSAUtils.encryptByPublicKey(ming, pubKey);
  System.out.println("密文：" + new String(mi, Constants.UTF_8));
  //解密后的明文
  ming = RSAUtils.decryptByPrivateKey(mi, priKey);
  System.out.println("解密：" + new String(ming, Constants.UTF_8));
}

代码示例来源：origin: stackoverflow.com

Random random = new SecureRandom();
String token = new BigInteger(130, random).toString(32);

代码示例来源：origin: pockethub/PocketHub

private static String digest(final String value) {
  if (MD5 == null) {
    return null;
  }
  byte[] bytes;
  try {
    bytes = value.getBytes(CHARSET);
  } catch (UnsupportedEncodingException e) {
    return null;
  }
  synchronized (MD5) {
    MD5.reset();
    bytes = MD5.digest(bytes);
  }
  String hashed = new BigInteger(1, bytes).toString(16);
  int padding = HASH_LENGTH - hashed.length();
  if (padding == 0) {
    return hashed;
  }
  char[] zeros = new char[padding];
  Arrays.fill(zeros, '0');
  return String.valueOf(zeros) + hashed;
}

代码示例来源：origin: redisson/redisson

private static String calcClassSign(String name) {
  try {
    Class<?> clazz = Class.forName(name);
    ByteArrayOutputStream result = new ByteArrayOutputStream();
    ObjectOutputStream outputStream = new ObjectOutputStream(result);
    outputStream.writeObject(clazz);
    outputStream.close();
    MessageDigest crypt = MessageDigest.getInstance("SHA-1");
    crypt.reset();
    crypt.update(result.toByteArray());
    return new BigInteger(1, crypt.digest()).toString(16);
  } catch (Exception e) {
    throw new IllegalStateException("Can't calculate sign of " + name, e);
  }
}

代码示例来源：origin: aa112901/remusic

RSAPublicKeySpec rsaPubKS = new RSAPublicKeySpec(new BigInteger(big1, 16), new BigInteger(big2, 16));
KeyFactory kf = KeyFactory.getInstance("RSA");
RSAPublicKey publicKey = (RSAPublicKey) kf.generatePublic(rsaPubKS);
String modulus = publicKey.getModulus().toString();
String public_exponent = publicKey.getPublicExponent().toString();
System.err.println(modulus);
System.err.println(public_exponent);
System.err.println(mi);

代码示例来源：origin: ethereum/ethereumj

@Test
public void blockTest() {
  String rlp = "f90498f90490f90217a0887405e8cf98cfdbbf5ab4521d45a0803e397af61852d94dc46ca077787088bfa0d6d234f05ac90931822b7b6f244cef81" +
      "83e5dd3080483273d6c2fcc02399216294ee0250c19ad59305b2bdb61f34b45b72fe37154fa0caa558a47a66b975426c6b963c46bb83d969787cfedc09fd2cab8ab83155568da07c970ab3f2004e2aa0" +
      "7d7b3dda348a3a4f8f4ab98b3504c46c1ffae09ef5bd23a077007d3a4c7c88823e9f80b1ba48ec74f88f40e9ec9c5036235fc320fe8a29ffb90100000000000000000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008311fc6782" +
      "02868508cc8cac48825208845682c3479ad983010302844765746887676f312e352e318777696e646f7773a020269a7f434e365b012659d1b190aa1586c22d7bbf0ed7fad73ca7d2b60f623c8841c814" +
      "3ae845fb3df867f8656e850ba43b7400830fffff9431e2e1ed11951c7091dfba62cd4b7145e947219c4d801ba0ad82686ee482723f88d9760b773e7b8234f126271e53369b928af0cbab302baea04fe3" +
      "dd2e0dbcc5d53123fe49f3515f0844c7e4c6dd3752f0cf916f4bb5cbe80bf9020af90207a08752c2c47c96537cf695bdecc9696a8ea35b6bfdc1389a134b47ad63fea38c2ca01dcc4de8dec75d7aab85" +
      "b567b6ccd41ad312451b948a7413f0a142fd40d493479450b8f981ce93fd5b81b844409169148428400bf3a05bff1dc620da4d3a123f8e08536434071281d64fc106105fb3bc94b6b1b8913ba0b59542" +
      "42bb4483396ae474b02651b40d4a9d61ab99a7455e57ef31f2688bdf81a03068c58706501d3059f40a5366debf4bf1cad48439d19f00154076c5d96c26d6b90100000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" +
      "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" +
      "008311f7ea8202848508d329637f825208845682c3438acccccccccccccccccccca0216ef6369d46fe0ad70d2b7f9aa0785f33cbb8894733859136b5143c0ed8b09f88bc45a9ac8c1cea67842b0113c6";
  NewBlockMessage msg = new NewBlockMessage(Hex.decode(rlp));
  Block b = msg.getBlock();
  System.out.println(b);
  System.out.println(msg.getDifficultyAsBigInt().toString(16));
}

代码示例来源：origin: apache/kafka

public String secureRandomString() {
  return new BigInteger(130, random).toString(Character.MAX_RADIX);
}

代码示例来源：origin: spotbugs/spotbugs

public @CheckForNull
String getHash(String sourceFile) {
  StringBuilder rawHash = hashes.get(sourceFile);
  if (rawHash == null || digest == null) {
    return null;
  }
  byte[] data = digest.digest(UTF8.getBytes(rawHash.toString()));
  String tmp = new BigInteger(1, data).toString(16);
  if (tmp.length() < 32) {
    tmp = "000000000000000000000000000000000".substring(0, 32 - tmp.length()) + tmp;
  }
  return tmp;
}

代码示例来源：origin: redisson/redisson

private static String calcClassSign(String name) {
  try {
    Class<?> clazz = Class.forName(name);
    ByteArrayOutputStream result = new ByteArrayOutputStream();
    ObjectOutputStream outputStream = new ObjectOutputStream(result);
    outputStream.writeObject(clazz);
    outputStream.close();
    MessageDigest crypt = MessageDigest.getInstance("SHA-1");
    crypt.reset();
    crypt.update(result.toByteArray());
    return new BigInteger(1, crypt.digest()).toString(16);
  } catch (Exception e) {
    throw new IllegalStateException("Can't calculate sign of " + name, e);
  }
}

代码示例来源：origin: ethereum/ethereumj

@Test
public void encodeTest1() {
  StandaloneBlockchain sb = new StandaloneBlockchain().withAutoblock(true);
  SolidityContract a = sb.submitNewContract(
      "contract A {" +
          "  int public a;" +
          "  function f(int a_) {a = a_;}" +
          "}");
  a.callFunction("f", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  BigInteger r = (BigInteger) a.callConstFunction("a")[0];
  System.out.println(r.toString(16));
  Assert.assertEquals(new BigInteger(Hex.decode("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")), r);
}

代码示例来源：origin: jfoenixadmin/JFoenix

public String nextSessionId() {
    return new BigInteger(50, random).toString(16);
  }
}

代码示例来源：origin: redisson/redisson

private static String calcClassSign(String name) {
  try {
    Class<?> clazz = Class.forName(name);
    ByteArrayOutputStream result = new ByteArrayOutputStream();
    ObjectOutputStream outputStream = new ObjectOutputStream(result);
    outputStream.writeObject(clazz);
    outputStream.close();
    MessageDigest crypt = MessageDigest.getInstance("SHA-1");
    crypt.reset();
    crypt.update(result.toByteArray());
    return new BigInteger(1, crypt.digest()).toString(16);
  } catch (Exception e) {
    throw new IllegalStateException("Can't calculate sign of " + name, e);
  }
}

代码示例来源：origin: ethereum/ethereumj

@Test
public void encodeTest2() {
  StandaloneBlockchain sb = new StandaloneBlockchain().withAutoblock(true);
  SolidityContract a = sb.submitNewContract(
      "contract A {" +
          "  uint public a;" +
          "  function f(uint a_) {a = a_;}" +
      "}");
  a.callFunction("f", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  BigInteger r = (BigInteger) a.callConstFunction("a")[0];
  System.out.println(r.toString(16));
  Assert.assertEquals(new BigInteger(1, Hex.decode("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")), r);
}

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