public SignerInfo(ASN1Sequence seq) {
Enumeration e = seq.getObjects();
version = (ASN1Integer) e.nextElement();
sid = SignerIdentifier.getInstance(e.nextElement());
digAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement());
Object obj = e.nextElement();
if (obj instanceof ASN1TaggedObject) {
authenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject) obj, false);
digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(e.nextElement());
} else {
authenticatedAttributes = null;
digEncryptionAlgorithm = AlgorithmIdentifier.getInstance(obj);
}
encryptedDigest = DEROctetString.getInstance(e.nextElement());
if (e.hasMoreElements()) {
unauthenticatedAttributes = ASN1Set.getInstance((ASN1TaggedObject) e.nextElement(), false);
} else {
unauthenticatedAttributes = null;
}
}
private BasicOCSPResponse(ASN1Sequence seq) {
this.tbsResponseData = ResponseData.getInstance(seq.getObjectAt(0));
this.signatureAlgorithm = AlgorithmIdentifier.getInstance(seq.getObjectAt(1));
this.signature = (DERBitString) seq.getObjectAt(2);
if (seq.size() > 3) {
this.certs = ASN1Sequence.getInstance((ASN1TaggedObject) seq.getObjectAt(3), true);
}
}
private OOBCertHash(ASN1Sequence seq) {
int index = seq.size() - 1;
hashVal = DERBitString.getInstance(seq.getObjectAt(index--));
for (int i = index; i >= 0; i--) {
ASN1TaggedObject tObj = (ASN1TaggedObject) seq.getObjectAt(i);
if (tObj.getTagNo() == 0) {
hashAlg = AlgorithmIdentifier.getInstance(tObj, true);
} else {
certId = CertId.getInstance(tObj, true);
}
}
}
public GenericKey generateUnwrappedKey(
AlgorithmIdentifier encryptedKeyAlgorithm, byte[] encryptedKey) throws OperatorException {
try {
Cipher keyCipher =
helper.createSymmetricWrapper(this.getAlgorithmIdentifier().getAlgorithm());
keyCipher.init(Cipher.UNWRAP_MODE, secretKey);
return new JceGenericKey(
encryptedKeyAlgorithm,
keyCipher.unwrap(
encryptedKey,
helper.getKeyAlgorithmName(encryptedKeyAlgorithm.getAlgorithm()),
Cipher.SECRET_KEY));
} catch (InvalidKeyException e) {
throw new OperatorException("key invalid in message.", e);
} catch (NoSuchAlgorithmException e) {
throw new OperatorException("can't find algorithm.", e);
}
}
