/** External signing example */
public static void main(String[] args) throws Exception {
System.setProperty("digidoc4j.mode", "TEST");
Configuration configuration = new Configuration(Configuration.Mode.TEST);
Container container =
ContainerBuilder.aContainer()
.withConfiguration(configuration)
.withDataFile("testFiles/test.txt", "text/plain")
.build();
SignatureToken externalSigner =
new ExternalSigner(getSignerCert()) {
@Override
public byte[] sign(DigestAlgorithm digestAlgorithm, byte[] dataToSign) {
// IMPLEMENT YOUR EXTERNAL SIGNING HERE
try {
KeyStore keyStore = KeyStore.getInstance("PKCS12");
try (FileInputStream stream = new FileInputStream("testFiles/signout.p12")) {
keyStore.load(stream, "test".toCharArray());
}
PrivateKey privateKey = (PrivateKey) keyStore.getKey("1", "test".toCharArray());
final String javaSignatureAlgorithm = "NONEwith" + privateKey.getAlgorithm();
return DSSUtils.encrypt(javaSignatureAlgorithm, privateKey, addPadding(dataToSign));
} catch (Exception e) {
throw new DigiDoc4JException("Loading private key failed");
}
}
private byte[] addPadding(byte[] digest) {
return ArrayUtils.addAll(SHA256.digestInfoPrefix(), digest);
}
};
Signature signature =
SignatureBuilder.aSignature(container).withSignatureToken(externalSigner).invokeSigning();
container.addSignature(signature);
container.save("prototype.bdoc");
}