Org.BouncyCastle.Cms.CmsSignedData.ReplaceSigners C# (CSharp) Method

		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;
		}