public virtual string[] GetClaimedSignerRoles() { if (signerInformation.SignedAttributes == null) { return(null); } BcCms.Attribute signerAttrAttr = signerInformation.SignedAttributes[PkcsObjectIdentifiers.IdAAEtsSignerAttr]; if (signerAttrAttr == null) { return(null); } SignerAttribute signerAttr = null; signerAttr = SignerAttribute.GetInstance(signerAttrAttr.AttrValues[0]); if (signerAttr == null) { return(null); } string[] ret = new string[signerAttr.ClaimedAttributes.Count]; for (int i = 0; i < signerAttr.ClaimedAttributes.Count; i++) { if (signerAttr.ClaimedAttributes[i] is DerOctetString) { ret[i] = Sharpen.Runtime.GetStringForBytes(((DerOctetString)signerAttr.ClaimedAttributes[i]) .GetOctets()); } else { ret[i] = signerAttr.ClaimedAttributes[i].ToString(); } } return(ret); }
private void ReadInformation() { if (_signerInformation.SignedAttributes[PkcsObjectIdentifiers.Pkcs9AtSigningTime] != null) { _signingDate = DerUtcTime.GetInstance(_signerInformation.SignedAttributes[PkcsObjectIdentifiers.Pkcs9AtSigningTime].AttrValues[0]).ToDateTime().ToLocalTime(); } if (_signerInformation.SignedAttributes[PkcsObjectIdentifiers.IdAAEtsSignerAttr] != null) { var signerAttr = SignerAttribute.GetInstance(_signerInformation.SignedAttributes[PkcsObjectIdentifiers.IdAAEtsSignerAttr].AttrValues[0]); List <string> claimedRoles = new List <string>(); foreach (BcCms.Attribute claimedAttr in signerAttr.ClaimedAttributes) { foreach (var value in claimedAttr.AttrValues) { claimedRoles.Add(DerUtf8String.GetInstance(value).GetString()); } } _signerRoles = claimedRoles; } if (_signerInformation.UnsignedAttributes != null && _signerInformation.UnsignedAttributes[PkcsObjectIdentifiers.IdAASignatureTimeStampToken] != null) { _timeStamp = new TimeStampToken(new CmsSignedData(_signerInformation.UnsignedAttributes[PkcsObjectIdentifiers.IdAASignatureTimeStampToken].AttrValues[0].GetEncoded())); } // Se leen las contrafirmas var signers = _signerInformation.GetCounterSignatures().GetSigners(); _counterSignatures = new List <SignerInfoNode>(); foreach (var signer in signers) { SignerInfoNode node = new SignerInfoNode((SignerInformation)signer, _sigDocument); _counterSignatures.Add(node); } // Se intenta identificar el certificado empleado para la firma, esto quizás se pueda mejorar byte[] certHash = null; IssuerSerial issuerSerial = null; if (_signerInformation.DigestAlgOid == DigestMethod.SHA1.Oid) { BcCms.Attribute attr = _signerInformation.SignedAttributes[PkcsObjectIdentifiers.IdAASigningCertificate]; SigningCertificate sc = SigningCertificate.GetInstance(attr.AttrValues[0]); EssCertID ecid = sc.GetCerts()[0]; issuerSerial = ecid.IssuerSerial; certHash = ecid.GetCertHash(); } else { BcCms.Attribute attr = _signerInformation.SignedAttributes[PkcsObjectIdentifiers.IdAASigningCertificateV2]; SigningCertificateV2 sc2 = SigningCertificateV2.GetInstance(attr.AttrValues[0]); EssCertIDv2 ecid = sc2.GetCerts()[0]; issuerSerial = ecid.IssuerSerial; certHash = ecid.GetCertHash(); } DigestMethod digestMethod = DigestMethod.GetByOid(_signerInformation.DigestAlgOid); foreach (X509CertificateStructure cs in _sigDocument.Certificates) { if (issuerSerial == null || cs.TbsCertificate.SerialNumber.Equals(issuerSerial.Serial)) { byte[] currentCertHash = digestMethod.CalculateDigest(cs.GetEncoded()); if (certHash.SequenceEqual(currentCertHash)) { _certificate = new X509Certificate(cs); break; } } } }