/** * Add a store of precalculated signers to the generator. * * @param signerStore store of signers */ public void AddSigners( SignerInformationStore signerStore) { foreach (SignerInformation o in signerStore.GetSigners()) { _signers.Add(o); AddSignerCallback(o); } }
/** * Replace the signerinformation store associated with this * CmsSignedData object with the new one passed in. You would * probably only want to do this if you wanted to change the unsigned * attributes associated with a signer, or perhaps delete one. * * @param signedData the signed data object to be used as a base. * @param signerInformationStore the new signer information store to use. * @return a new signed data object. */ public static CmsSignedData ReplaceSigners( CmsSignedData signedData, SignerInformationStore signerInformationStore) { // // copy // CmsSignedData cms = new CmsSignedData(signedData); // // replace the store // cms.signerInfoStore = signerInformationStore; // // replace the signers in the SignedData object // Asn1EncodableVector digestAlgs = new Asn1EncodableVector(); Asn1EncodableVector vec = new Asn1EncodableVector(); foreach (SignerInformation signer in signerInformationStore.GetSigners()) { digestAlgs.Add(Helper.FixAlgID(signer.DigestAlgorithmID)); vec.Add(signer.ToSignerInfo()); } Asn1Set digests = new DerSet(digestAlgs); Asn1Set signers = new DerSet(vec); Asn1Sequence sD = (Asn1Sequence)signedData.signedData.ToAsn1Object(); // // signers are the last item in the sequence. // vec = new Asn1EncodableVector( sD[0], // version digests); for (int i = 2; i != sD.Count - 1; i++) { vec.Add(sD[i]); } vec.Add(signers); cms.signedData = SignedData.GetInstance(new BerSequence(vec)); // // replace the contentInfo with the new one // cms.contentInfo = new ContentInfo(cms.contentInfo.ContentType, cms.signedData); return(cms); }
/** * Return a signer information object with passed in SignerInformationStore representing counter * signatures attached as an unsigned attribute. * * @param signerInformation the signerInfo to be used as the basis. * @param counterSigners signer info objects carrying counter signature. * @return a copy of the original SignerInformationObject with the changed attributes. */ public static SignerInformation AddCounterSigners( SignerInformation signerInformation, SignerInformationStore counterSigners) { // TODO Perform checks from RFC 3852 11.4 SignerInfo sInfo = signerInformation.info; AttributeTable unsignedAttr = signerInformation.UnsignedAttributes; Asn1EncodableVector v; if (unsignedAttr != null) { v = unsignedAttr.ToAsn1EncodableVector(); } else { v = new Asn1EncodableVector(); } Asn1EncodableVector sigs = new Asn1EncodableVector(); foreach (SignerInformation sigInf in counterSigners.GetSigners()) { sigs.Add(sigInf.ToSignerInfo()); } v.Add(new Attribute(CmsAttributes.CounterSignature, new DerSet(sigs))); return(new SignerInformation( new SignerInfo( sInfo.SignerID, sInfo.DigestAlgorithm, sInfo.AuthenticatedAttributes, sInfo.DigestEncryptionAlgorithm, sInfo.EncryptedDigest, new DerSet(v)), signerInformation.contentType, signerInformation.content, null)); }