Download - Svetlin Nakov

}
}
return data;
}
finally {
fileStream.close();
}
/**
* Signs given document with a given private key.
*/
private byte[] signDocument(byte[] aDocument, PrivateKey aPrivateKey)
throws GeneralSecurityException {
Signature signatureAlgorithm =
Signature.getInstance(DIGITAL_SIGNATURE_ALGORITHM_NAME);
signatureAlgorithm.initSign(aPrivateKey);
signatureAlgorithm.update(aDocument);
byte[] digitalSignature = signatureAlgorithm.sign();
return digitalSignature;
}
/**
* Data structure that holds a pair of private key and
* certification chain corresponding to this private key.
*/
static class PrivateKeyAndCertChain {
public PrivateKey mPrivateKey;
public Certificate[] mCertificationChain;
}
/**
* Data structure that holds a pair of Base64-encoded
* certification chain and digital signature.
*/
static class CertificationChainAndSignatureInBase64 {
public String mCertChain = null;
public String mSignature = null;
}
/**
* Exception class used for document signing errors.
*/
static class DocumentSignException extends Exception {
public DocumentSignException(String aMessage) {
super(aMessage);
}
}
public DocumentSignException(String aMessage, Throwable aCause) {
super(aMessage, aCause);
}
}
Основният клас използва класа CertificateFileAndPasswordDialog за да
предостави на потребителя възможност за избор на PFX файл и парола за
достъп до него. Ето неговият сорс код:
import java.awt.*;
CertificateFileAndPasswordDialog.java
81