Examples of java.security.Signature$SignatureImpl

java.security.Signature
Internal Signature implementation

        PrivateKey          key,
        SecureRandom        random,
        ASN1Encodable       object)
        throws IOException, NoSuchAlgorithmException, InvalidKeyException, SignatureException
    {
        Signature sig;


        if (sigOid == null)
        {
            throw new IllegalStateException("no signature algorithm specified");
        }


        sig = X509Util.getSignatureInstance(sigName);


        if (random != null)
        {
            sig.initSign(key, random);
        }
        else
        {
            sig.initSign(key);
        }


        sig.update(object.getEncoded(ASN1Encodable.DER));


        return sig.sign();
    }

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        PrivateKey          key,
        SecureRandom        random,
        ASN1Encodable       object)
        throws IOException, NoSuchProviderException, NoSuchAlgorithmException, InvalidKeyException, SignatureException
    {
        Signature sig;


        if (sigOid == null)
        {
            throw new IllegalStateException("no signature algorithm specified");
        }


        sig = X509Util.getSignatureInstance(sigName, provider);


        if (random != null)
        {
            sig.initSign(key, random);
        }
        else
        {
            sig.initSign(key);
        }


        sig.update(object.getEncoded(ASN1Encodable.DER));


        return sig.sign();
    }

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    public final void verify(
        PublicKey   key)
        throws CertificateException, NoSuchAlgorithmException,
        InvalidKeyException, NoSuchProviderException, SignatureException
    {
        Signature   signature = null;


        if (!c.getSignatureAlgorithm().equals(c.getTBSCertificate().getSignature()))
        {
            throw new CertificateException("signature algorithm in TBS cert not same as outer cert");
        }


        try
        {
            signature = Signature.getInstance(c.getSignatureAlgorithm().getObjectId().getId(), "BC");
        }
        catch (Exception e)
        {
            signature = Signature.getInstance(c.getSignatureAlgorithm().getObjectId().getId());
        }


        signature.initVerify(key);


        signature.update(this.getTBSCertificate());


        if (!signature.verify(this.getSignature()))
        {
            throw new InvalidKeyException("Public key presented not for certificate signature");
        }
    }

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        PublicKey   key,
        String      sigProvider)
        throws CertificateException, NoSuchAlgorithmException,
        InvalidKeyException, NoSuchProviderException, SignatureException
    {
        Signature signature = Signature.getInstance(c.getSignatureAlgorithm().getObjectId().getId(), sigProvider);


        signature.initVerify(key);


        signature.update(this.getTBSCertificate());


        if (!signature.verify(this.getSignature()))
        {
            throw new InvalidKeyException("Public key presented not for certificate signature");
        }
    }

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   */
  public SignedAspect(Aspect extension, KeyPair keys) {
    publicKey = keys.getPublic();


    try {
      Signature signingEngine = Signature.getInstance(getSigningAlgorithm());
      signedExtension = new SignedObject(new MarshalledObject(extension), keys.getPrivate(), signingEngine);
    } catch (Exception e) {
      throw new IllegalArgumentException("failed to sign extension ("+e+")");
    }
  }

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   * @throws NoSuchAlgorithmException
   * @throws SignatureException
   * @throws InvalidKeyException
   */
  public void verifyExtension() throws NoSuchAlgorithmException, SignatureException, InvalidKeyException {
    Signature verificationEngine = Signature.getInstance(getSigningAlgorithm());
    signedExtension.verify(publicKey, verificationEngine);
    verified = true;
  }

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                }


                signature = bar.readBinaryString();
            }


            Signature s = Signature.getInstance("SHA1withRSA");
            s.initVerify(pubKey);
            s.update(data);


            return s.verify(signature);
        } catch (NoSuchAlgorithmException nsae) {
            throw new InvalidSignatureException();
        } catch (IOException ioe) {
            throw new InvalidSignatureException();
        } catch (java.security.InvalidKeyException ike) {

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     *
     * @return
     */
    public byte[] generateSignature(byte[] data) {
        try {
            Signature sig = Signature.getInstance("SHA1withRSA");
            sig.initSign(prvKey);
            sig.update(data);


            ByteArrayWriter baw = new ByteArrayWriter();
            baw.writeString(getAlgorithmName());
            baw.writeBinaryString(sig.sign());


            return baw.toByteArray();
        } catch (Exception e) {
            return null;
        }

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                asn1s.length);
                         int soffset = (((signature[20] & 0x80) == 0x80) ? 1 : 0);
                         System.arraycopy(signature, 20, encoded,
                asn1r.length + roffset + 20 + asn1s.length + soffset, 20);
             */
            Signature sig = Signature.getInstance("SHA1withDSA");
            sig.initVerify(pubkey);
            sig.update(data);


            return sig.verify(encoded);
        } catch (NoSuchAlgorithmException nsae) {
            throw new InvalidSignatureException();
        } catch (java.security.InvalidKeyException ike) {
            throw new InvalidSignatureException();
        } catch (IOException ioe) {

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     * @throws InvalidSshKeySignatureException
     */
    public byte[] generateSignature(byte[] data)
        throws InvalidSignatureException {
        try {
            Signature sig = Signature.getInstance("SHA1withDSA");
            sig.initSign(prvkey);


            sig.update(data);


            byte[] signature = sig.sign();
            byte[] decoded = new byte[40];
            SimpleASNReader asn = new SimpleASNReader(signature);
            asn.getByte();
            asn.getLength();
            asn.getByte();

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