Пример #1
0
  public Signature createRawSignature(AlgorithmIdentifier algorithm) {
    Signature sig;

    try {
      String algName = getSignatureName(algorithm);

      algName = "NONE" + algName.substring(algName.indexOf("WITH"));

      sig = helper.createSignature(algName);

      // RFC 4056
      // When the id-RSASSA-PSS algorithm identifier is used for a signature,
      // the AlgorithmIdentifier parameters field MUST contain RSASSA-PSS-params.
      /*
      Can;t do this pre-jdk1.4
                  if (algorithm.getAlgorithm().equals(PKCSObjectIdentifiers.id_RSASSA_PSS))
                  {
                      AlgorithmParameters params = helper.createAlgorithmParameters(algName);

                      params.init(algorithm.getParameters().toASN1Primitive().getEncoded(), "ASN.1");

                      PSSParameterSpec spec = (PSSParameterSpec)params.getParameterSpec(PSSParameterSpec.class);
                      sig.setParameter(spec);
                  }
      */
    } catch (Exception e) {
      return null;
    }

    return sig;
  }
Пример #2
0
  Signature createSignature(AlgorithmIdentifier sigAlgId) throws GeneralSecurityException {
    Signature sig;

    try {
      sig = helper.createSignature(getSignatureName(sigAlgId));
    } catch (NoSuchAlgorithmException e) {
      //
      // try an alternate
      //
      if (oids.get(sigAlgId.getAlgorithm()) != null) {
        String signatureAlgorithm = (String) oids.get(sigAlgId.getAlgorithm());

        sig = helper.createSignature(signatureAlgorithm);
      } else {
        throw e;
      }
    }

    return sig;
  }