Example usage for org.bouncycastle.asn1.cms Attributes Attributes

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.cms Attributes Attributes.

Prototype

public Attributes(ASN1EncodableVector v) 

Source Link

Usage

From source file:CreateSignature.java

License:Apache License

/**
 * We are extending CMS Signature/*from   w  w w. ja va  2s.c om*/
 *
 * @param signer information about signer
 * @return information about SignerInformation
 */
private SignerInformation signTimeStamp(SignerInformation signer) throws IOException, TSPException {
    AttributeTable unsignedAttributes = signer.getUnsignedAttributes();

    ASN1EncodableVector vector = new ASN1EncodableVector();
    if (unsignedAttributes != null) {
        vector = unsignedAttributes.toASN1EncodableVector();
    }

    byte[] token = getTsaClient().getTimeStampToken(signer.getSignature());
    ASN1ObjectIdentifier oid = PKCSObjectIdentifiers.id_aa_signatureTimeStampToken;
    ASN1Encodable signatureTimeStamp = new Attribute(oid, new DERSet(ASN1Primitive.fromByteArray(token)));

    vector.add(signatureTimeStamp);
    Attributes signedAttributes = new Attributes(vector);

    SignerInformation newSigner = SignerInformation.replaceUnsignedAttributes(signer,
            new AttributeTable(signedAttributes));

    // TODO can this actually happen?
    if (newSigner == null) {
        return signer;
    }

    return newSigner;
}

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From source file:com.modemo.javase.signature.ValidationTimeStamp.java

License:Apache License

/**
 * Extend CMS Signer Information with the TimeStampToken into the unsigned Attributes.
 *
 * @param signer information about signer
 * @return information about SignerInformation
 * @throws IOException//w  ww.  j  a  v  a2 s  .  c  o m
 */
private SignerInformation signTimeStamp(SignerInformation signer) throws IOException {
    AttributeTable unsignedAttributes = signer.getUnsignedAttributes();

    ASN1EncodableVector vector = new ASN1EncodableVector();
    if (unsignedAttributes != null) {
        vector = unsignedAttributes.toASN1EncodableVector();
    }

    byte[] token = tsaClient.getTimeStampToken(signer.getSignature());
    ASN1ObjectIdentifier oid = PKCSObjectIdentifiers.id_aa_signatureTimeStampToken;
    ASN1Encodable signatureTimeStamp = new Attribute(oid, new DERSet(ASN1Primitive.fromByteArray(token)));

    vector.add(signatureTimeStamp);
    Attributes signedAttributes = new Attributes(vector);

    // There is no other way changing the unsigned attributes of the signer information.
    // result is never null, new SignerInformation always returned, 
    // see source code of replaceUnsignedAttributes
    return SignerInformation.replaceUnsignedAttributes(signer, new AttributeTable(signedAttributes));
}

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