org.bouncycastle.crypto.digests.SHA256Digest.<init>()方法的使用及代码示例

x33g5p2x  于2022-01-30 转载在 其他  
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本文整理了Java中org.bouncycastle.crypto.digests.SHA256Digest.<init>()方法的一些代码示例，展示了SHA256Digest.<init>()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。SHA256Digest.<init>()方法的具体详情如下：
包路径：org.bouncycastle.crypto.digests.SHA256Digest
类名称：SHA256Digest
方法名：<init>

SHA256Digest.<init>介绍

[英]Standard constructor
[中]标准构造器

代码示例

代码示例来源：origin: stackoverflow.com

PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());
gen.init("password".getBytes("UTF-8"), "salt".getBytes(), 4096);
byte[] dk = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

代码示例来源：origin: cloudfoundry/uaa

private byte[] generateKey(byte[] salt) throws UnsupportedEncodingException {
    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());

    gen.init(this.passphrase.getBytes("UTF-8"), salt, PBKDF2_ITERATIONS);
    return ((KeyParameter) gen.generateDerivedParameters(AES_KEY_LENGTH_BITS)).getKey();
  }
}

代码示例来源：origin: web3j/web3j

private static byte[] generateAes128CtrDerivedKey(
    byte[] password, byte[] salt, int c, String prf) throws CipherException {
  if (!prf.equals("hmac-sha256")) {
    throw new CipherException("Unsupported prf:" + prf);
  }
  // Java 8 supports this, but you have to convert the password to a character array, see
  // http://stackoverflow.com/a/27928435/3211687
  PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());
  gen.init(password, salt, c);
  return ((KeyParameter) gen.generateDerivedParameters(256)).getKey();
}

代码示例来源：origin: web3j/web3j

/**
 * Sign a hash with the private key of this key pair.
 * @param transactionHash   the hash to sign
 * @return  An {@link ECDSASignature} of the hash
 */
public ECDSASignature sign(byte[] transactionHash) {
  ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
  ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKey, Sign.CURVE);
  signer.init(true, privKey);
  BigInteger[] components = signer.generateSignature(transactionHash);
  return new ECDSASignature(components[0], components[1]).toCanonicalised();
}

代码示例来源：origin: apache/nifi

private Digest resolvePRF(final String prf) {
    if (StringUtils.isEmpty(prf)) {
      throw new IllegalArgumentException("Cannot resolve empty PRF");
    }
    String formattedPRF = prf.toLowerCase().replaceAll("[\\W]+", "");
    logger.debug("Resolved PRF {} to {}", prf, formattedPRF);
    switch (formattedPRF) {
      case "md5":
        return new MD5Digest();
      case "sha1":
        return new SHA1Digest();
      case "sha384":
        return new SHA384Digest();
      case "sha256":
        return new SHA256Digest();
      case "sha512":
        return new SHA512Digest();
      default:
        logger.warn("Could not resolve PRF {}. Using default PRF {} instead", prf, DEFAULT_PRF);
        return new SHA512Digest();
    }
  }
}

代码示例来源：origin: hyperledger/fabric-sdk-java

private Digest getHashDigest() {
  if ("SHA3".equals(hashAlgorithm)) {
    return new SHA3Digest();
  } else {
    // Default to SHA2
    return new SHA256Digest();
  }
}

代码示例来源：origin: hyperledger/fabric-sdk-java

byte[] getClientTLSCertificateDigest() {
  //The digest must be SHA256 over the DER encoded certificate. The PEM has the exact DER sequence in hex encoding around the begin and end markers
  if (tlsClientCertificatePEMBytes != null && clientTLSCertificateDigest == null) {
    String pemCert = new String(tlsClientCertificatePEMBytes, UTF_8);
    byte[] derBytes = Base64.getDecoder().decode(
        pemCert.replaceAll("-+[ \t]*(BEGIN|END)[ \t]+CERTIFICATE[ \t]*-+", "").replaceAll("\\s", "").trim()
    );
    Digest digest = new SHA256Digest();
    clientTLSCertificateDigest = new byte[digest.getDigestSize()];
    digest.update(derBytes, 0, derBytes.length);
    digest.doFinal(clientTLSCertificateDigest, 0);
  }
  return clientTLSCertificateDigest;
}

代码示例来源：origin: stackoverflow.com

PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator(new SHA256Digest());
generator.init(PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(password), salt, iterations);
KeyParameter key = (KeyParameter)generator.generateDerivedMacParameters(keySizeInBits);

代码示例来源：origin: stackoverflow.com

private byte[] decryptWithLWCrypto(byte[] cipher, String password, byte[] salt, final  int iterationCount)
    throws Exception
{
  PKCS12ParametersGenerator pGen = new PKCS12ParametersGenerator(new SHA256Digest());
  char[] passwordChars = password.toCharArray();
  final byte[] pkcs12PasswordBytes = PBEParametersGenerator
      .PKCS12PasswordToBytes(passwordChars);
  pGen.init(pkcs12PasswordBytes, salt, iterationCount);
  CBCBlockCipher aesCBC = new CBCBlockCipher(new AESEngine());
  ParametersWithIV aesCBCParams = (ParametersWithIV) pGen.generateDerivedParameters(256, 128);
  aesCBC.init(false, aesCBCParams);
  PaddedBufferedBlockCipher aesCipher = new PaddedBufferedBlockCipher(aesCBC,
      new PKCS7Padding());
  byte[] plainTemp = new byte[aesCipher.getOutputSize(cipher.length)];
  int offset = aesCipher.processBytes(cipher, 0, cipher.length, plainTemp, 0);
  int last = aesCipher.doFinal(plainTemp, offset);
  final byte[] plain = new byte[offset + last];
  System.arraycopy(plainTemp, 0, plain, 0, plain.length);
  return plain;
}

代码示例来源：origin: stackoverflow.com

Digest md = new SHA256Digest()
md.reset();
md.update(data, 0, data.length);
byte[] hash = new byte[md.getDigestSize()];
md.doFinal(hash, 0);

代码示例来源：origin: com.hierynomus/smbj

@Override
  public Digest create() {
    return new SHA256Digest();
  }
});

代码示例来源：origin: org.xwiki.platform/xwiki-platform-crypto-common

@Override
public Digest getDigestInstance()
{
  return new SHA256Digest();
}

代码示例来源：origin: com.hierynomus/smbj

@Override
  public org.bouncycastle.crypto.Mac create() {
    return new HMac(new SHA256Digest());
  }
});

代码示例来源：origin: org.bouncycastle/bcprov-debug-jdk15on

public SM2withSha256()
  {
    super(new SM2Engine(new SHA256Digest()));
  }
}

代码示例来源：origin: org.cryptacular/cryptacular

/**
 * Creates a new DRBG instance based on a SHA-256 digest.
 *
 * @param  length  Length in bits of values to be produced by DRBG instance.
 *
 * @return  New DRGB instance.
 */
public static SP80090DRBG newRBG(final int length)
{
 return newRBG(new SHA256Digest(), length);
}

代码示例来源：origin: com.cryptape.cita/crypto

private static byte[] generateAes128CtrDerivedKey(
    byte[] password, byte[] salt, int c, String prf) throws CipherException {
  if (!prf.equals("hmac-sha256")) {
    throw new CipherException("Unsupported prf:" + prf);
  }
  // Java 8 supports this, but you have to convert the password to a character array, see
  // http://stackoverflow.com/a/27928435/3211687
  PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());
  gen.init(password, salt, c);
  return ((KeyParameter) gen.generateDerivedParameters(256)).getKey();
}

代码示例来源：origin: io.github.moacchain/crypto

private static byte[] generateAes128CtrDerivedKey(
    byte[] password, byte[] salt, int c, String prf) throws CipherException {
  if (!prf.equals("hmac-sha256")) {
    throw new CipherException("Unsupported prf:" + prf);
  }
  // Java 8 supports this, but you have to convert the password to a character array, see
  // http://stackoverflow.com/a/27928435/3211687
  PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA256Digest());
  gen.init(password, salt, c);
  return ((KeyParameter) gen.generateDerivedParameters(256)).getKey();
}

代码示例来源：origin: horrorho/InflatableDonkey

static byte[] id(byte[] data) {
  // SHA256 truncated to 20 bytes. 
  Digest digest = new SHA256Digest();
  byte[] out = new byte[digest.getDigestSize()];
  digest.update(data, 0, data.length);
  digest.doFinal(out, 0);
  return Arrays.copyOf(out, 20);
}

代码示例来源：origin: org.web3j/crypto

/**
 * Sign a hash with the private key of this key pair.
 * @param transactionHash   the hash to sign
 * @return  An {@link ECDSASignature} of the hash
 */
public ECDSASignature sign(byte[] transactionHash) {
  ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
  ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKey, Sign.CURVE);
  signer.init(true, privKey);
  BigInteger[] components = signer.generateSignature(transactionHash);
  return new ECDSASignature(components[0], components[1]).toCanonicalised();
}

代码示例来源：origin: org.apache.ratis/ratis-proto-shaded

public static DigestCalculator sha256() {
  Digest digest = new SHA256Digest();
  // The OID for SHA-256: http://www.oid-info.com/get/2.16.840.1.101.3.4.2.1
  ASN1ObjectIdentifier oid = new ASN1ObjectIdentifier(
      "2.16.840.1.101.3.4.2.1").intern();
  AlgorithmIdentifier algId = new AlgorithmIdentifier(oid);
  return new Digester(digest, algId);
}

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SHA256Digest

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