Example usage for org.bouncycastle.operator ContentSigner ContentSigner

Introduction

In this page you can find the example usage for org.bouncycastle.operator ContentSigner ContentSigner.

Prototype

ContentSigner

Source Link

Usage

From source file:org.tdmx.client.crypto.algorithm.SignatureAlgorithm.java

License:Open Source License

public static ContentSigner getContentSigner(final PrivateKey privateKey, final SignatureAlgorithm alg) {
    return new ContentSigner() {

        private final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        @Override//from w  w  w .j a  va  2  s.  com
        public byte[] getSignature() {

            try {
                Signature signer = alg.getSignature(privateKey);
                signer.update(outputStream.toByteArray());
                return signer.sign();
            } catch (CryptoException e) {
                return null;
            } catch (SignatureException e) {
                return null;
            }
        }

        @Override
        public OutputStream getOutputStream() {
            return outputStream;
        }

        @Override
        public AlgorithmIdentifier getAlgorithmIdentifier() {
            return new AlgorithmIdentifier(alg.getAsn1oid());
        }
    };

}

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