@Override
public byte[] getBytes() throws DSSException {
final InputStream inputStream = openStream();
final byte[] bytes = DSSUtils.toByteArray(inputStream);
IOUtils.closeQuietly(inputStream);
return bytes;
}
@Override
public String getBase64Encoded() {
final InputStream inputStream = openStream();
final byte[] bytes = DSSUtils.toByteArray(inputStream);
IOUtils.closeQuietly(inputStream);
return Base64.encodeBase64String(bytes);
}
@Override
public String getDigest(final DigestAlgorithm digestAlgorithm) {
final InputStream inputStream = openStream();
final byte[] digestBytes = DSSUtils.digest(digestAlgorithm, inputStream);
IOUtils.closeQuietly(inputStream);
final String base64Encode = Base64.encodeBase64String(digestBytes);
return base64Encode;
}
@Override
public void save(final String filePath) {
try {
final FileOutputStream fos = new FileOutputStream(filePath);
DSSUtils.write(getBytes(), fos);
fos.close();
} catch (DSSException e) {
throw new DSSException(e);
} catch (IOException e) {
throw new DSSException(e);
}
}
/**
* This method returns the {@code ASN1Sequence} encapsulated in {@code DEROctetString}. The {@code
* DEROctetString} is represented as {@code byte} array.
*
* @param bytes {@code byte} representation of {@code DEROctetString}
* @return encapsulated {@code ASN1Sequence}
* @throws DSSException in case of a decoding problem
*/
public static ASN1Sequence getAsn1SequenceFromDerOctetString(byte[] bytes) throws DSSException {
ASN1InputStream input = null;
try {
input = new ASN1InputStream(bytes);
final DEROctetString s = (DEROctetString) input.readObject();
final byte[] content = s.getOctets();
input.close();
input = new ASN1InputStream(content);
final ASN1Sequence seq = (ASN1Sequence) input.readObject();
return seq;
} catch (IOException e) {
throw new DSSException("Error when converting byte array to ASN1Sequence!", e);
} finally {
DSSUtils.closeQuietly(input);
}
}
/**
* This method generates a bouncycastle {@code TimeStampToken} based on base 64 encoded {@code
* String}.
*
* @param base64EncodedTimestamp
* @return bouncycastle {@code TimeStampToken}
* @throws DSSException
*/
public static TimeStampToken createTimeStampToken(final String base64EncodedTimestamp)
throws DSSException {
try {
final byte[] tokenBytes = DSSUtils.base64Decode(base64EncodedTimestamp);
final CMSSignedData signedData = new CMSSignedData(tokenBytes);
return new TimeStampToken(signedData);
} catch (DSSException e) {
throw new DSSException(e);
} catch (CMSException e) {
throw new DSSException(e);
} catch (TSPException e) {
throw new DSSException(e);
} catch (IOException e) {
throw new DSSException(e);
}
}
/**
* Creates dss document that retains the data in memory
*
* @param inputStream input stream representing the document
* @param name the file name if the data originates from a file
* @param mimeType the mime type of the file if the data originates from a file
* @throws IOException
*/
public InMemoryDocument(final InputStream inputStream, final String name, final MimeType mimeType)
throws DSSException {
this(DSSUtils.toByteArray(inputStream), name, mimeType);
}
/**
* Creates dss document that retains the data in memory
*
* @param inputStream input stream representing the document
* @throws DSSException
*/
public InMemoryDocument(final InputStream inputStream) throws DSSException {
this(DSSUtils.toByteArray(inputStream), null, null);
}
@Override
public String getDigest(final DigestAlgorithm digestAlgorithm) {
final byte[] digestBytes = DSSUtils.digest(digestAlgorithm, bytes);
final String base64Encode = Base64.encodeBase64String(digestBytes);
return base64Encode;
}
@Override
public void save(final String path) throws IOException {
final InputStream inputStream = openStream();
DSSUtils.saveToFile(inputStream, path);
IOUtils.closeQuietly(inputStream);
}
@Override
public InputStream openStream() throws DSSException {
final InputStream inputStream = DSSUtils.toInputStream(file);
return inputStream;
}