Java Code Examples for org.bouncycastle.asn1.x9.X9ObjectIdentifiers#id_dsa()

The following examples show how to use org.bouncycastle.asn1.x9.X9ObjectIdentifiers#id_dsa() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: KeypairGenControl.java    From xipki with Apache License 2.0 6 votes vote down vote up 
public DSAKeypairGenControl(int pLength, int qLength, ASN1ObjectIdentifier keyAlgorithmOid) {
  if (pLength < 1024 | pLength % 1024 != 0) {
    throw new IllegalArgumentException("invalid pLength " + pLength);
  }

  if (qLength == 0) {
    if (pLength < 2048) {
      qLength = 160;
    } else if (pLength < 3072) {
      qLength = 224;
    } else {
      qLength = 256;
    }
  }

  this.parameterSpec = DSAParameterCache.getDSAParameterSpec(pLength, qLength, null);
  this.keyAlgorithm = new AlgorithmIdentifier(
      (keyAlgorithmOid != null) ? keyAlgorithmOid : X9ObjectIdentifiers.id_dsa,
      new DSAParameter(parameterSpec.getP(), parameterSpec.getQ(), parameterSpec.getG()));
}
Example 2
Source File: CaClientExample.java    From xipki with Apache License 2.0 6 votes vote down vote up 
protected static MyKeypair generateDsaKeypair() throws Exception {
  // plen: 2048, qlen: 256
  DSAParameterSpec spec = new DSAParameterSpec(P2048_Q256_P, P2048_Q256_Q, P2048_Q256_G);
  KeyPairGenerator kpGen = KeyPairGenerator.getInstance("DSA");
  kpGen.initialize(spec);
  KeyPair kp = kpGen.generateKeyPair();

  DSAPublicKey dsaPubKey = (DSAPublicKey) kp.getPublic();
  ASN1EncodableVector vec = new ASN1EncodableVector();
  vec.add(new ASN1Integer(dsaPubKey.getParams().getP()));
  vec.add(new ASN1Integer(dsaPubKey.getParams().getQ()));
  vec.add(new ASN1Integer(dsaPubKey.getParams().getG()));
  ASN1Sequence dssParams = new DERSequence(vec);

  SubjectPublicKeyInfo subjectPublicKeyInfo = new SubjectPublicKeyInfo(
      new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, dssParams),
      new ASN1Integer(dsaPubKey.getY()));

  return new MyKeypair(kp.getPrivate(), subjectPublicKeyInfo);
}
Example 3
Source File: CaClientExample.java    From xipki with Apache License 2.0 6 votes vote down vote up 
protected static MyKeypair generateDsaKeypair() throws Exception {
  // plen: 2048, qlen: 256
  DSAParameterSpec spec = new DSAParameterSpec(P2048_Q256_P, P2048_Q256_Q, P2048_Q256_G);
  KeyPairGenerator kpGen = KeyPairGenerator.getInstance("DSA");
  kpGen.initialize(spec);
  KeyPair kp = kpGen.generateKeyPair();

  DSAPublicKey dsaPubKey = (DSAPublicKey) kp.getPublic();
  ASN1EncodableVector vec = new ASN1EncodableVector();
  vec.add(new ASN1Integer(dsaPubKey.getParams().getP()));
  vec.add(new ASN1Integer(dsaPubKey.getParams().getQ()));
  vec.add(new ASN1Integer(dsaPubKey.getParams().getG()));
  ASN1Sequence dssParams = new DERSequence(vec);

  SubjectPublicKeyInfo subjectPublicKeyInfo = new SubjectPublicKeyInfo(
      new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, dssParams),
      new ASN1Integer(dsaPubKey.getY()));

  return new MyKeypair(kp.getPrivate(), subjectPublicKeyInfo);
}
Example 4
Source File: KeypairGenControl.java    From xipki with Apache License 2.0 5 votes vote down vote up 
public DSAKeypairGenControl(BigInteger p, BigInteger q, BigInteger g,
    ASN1ObjectIdentifier keyAlgorithmOid) {
  this.parameterSpec = new DSAParameterSpec(p, q, g);

  this.keyAlgorithm = new AlgorithmIdentifier(
      (keyAlgorithmOid != null) ? keyAlgorithmOid : X9ObjectIdentifiers.id_dsa,
      new DSAParameter(p, q, g));
}
Example 5
Source File: CaEnrollBenchKeyEntry.java    From xipki with Apache License 2.0 5 votes vote down vote up 
private void init(BigInteger p, BigInteger q, BigInteger g, BigInteger y) throws IOException {
  ASN1EncodableVector vec = new ASN1EncodableVector();
  vec.add(new ASN1Integer(p));
  vec.add(new ASN1Integer(q));
  vec.add(new ASN1Integer(g));
  ASN1Sequence dssParams = new DERSequence(vec);
  AlgorithmIdentifier algId = new AlgorithmIdentifier(X9ObjectIdentifiers.id_dsa, dssParams);
  this.spki = new SubjectPublicKeyInfo(algId, new ASN1Integer(y));
}