internal SignerInfo(SignedCms signedCms, SignerInfo parentSignerInfo, byte[] encodedSignerInfo) { uint cbDecodedValue = 0U; SafeLocalAllocHandle decodedValue = SafeLocalAllocHandle.InvalidHandle; fixed(byte *numPtr = &encodedSignerInfo[0]) { if (!CAPI.DecodeObject(new IntPtr(500L), new IntPtr((void *)numPtr), (uint)encodedSignerInfo.Length, out decodedValue, out cbDecodedValue)) { throw new CryptographicException(Marshal.GetLastWin32Error()); } } this.m_signedCms = signedCms; this.m_parentSignerInfo = parentSignerInfo; this.m_encodedSignerInfo = (byte[])encodedSignerInfo.Clone(); this.m_pbCmsgSignerInfo = decodedValue; this.m_cmsgSignerInfo = (CAPI.CMSG_SIGNER_INFO)Marshal.PtrToStructure(decodedValue.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_INFO)); }
public void RemoveCounterSignature(SignerInfo counterSignerInfo) { if (this.m_parentSignerInfo != null) { throw new CryptographicException(-2147483647); } if (counterSignerInfo == null) { throw new ArgumentNullException("counterSignerInfo"); } foreach (CryptographicAttributeObject cryptographicAttributeObject in this.UnsignedAttributes) { if (string.Compare(cryptographicAttributeObject.Oid.Value, "1.2.840.113549.1.9.6", StringComparison.OrdinalIgnoreCase) == 0) { for (int childIndex = 0; childIndex < cryptographicAttributeObject.Values.Count; ++childIndex) { SignerInfo signerInfo = new SignerInfo(this.m_signedCms, this.m_parentSignerInfo, cryptographicAttributeObject.Values[childIndex].RawData); if (counterSignerInfo.SignerIdentifier.Type == SubjectIdentifierType.IssuerAndSerialNumber && signerInfo.SignerIdentifier.Type == SubjectIdentifierType.IssuerAndSerialNumber) { X509IssuerSerial x509IssuerSerial1 = (X509IssuerSerial)counterSignerInfo.SignerIdentifier.Value; X509IssuerSerial x509IssuerSerial2 = (X509IssuerSerial)signerInfo.SignerIdentifier.Value; if (string.Compare(x509IssuerSerial1.IssuerName, x509IssuerSerial2.IssuerName, StringComparison.OrdinalIgnoreCase) == 0 && string.Compare(x509IssuerSerial1.SerialNumber, x509IssuerSerial2.SerialNumber, StringComparison.OrdinalIgnoreCase) == 0) { this.RemoveCounterSignature(PkcsUtils.GetSignerIndex(this.m_signedCms.GetCryptMsgHandle(), this, 0), childIndex); return; } } else if (counterSignerInfo.SignerIdentifier.Type == SubjectIdentifierType.SubjectKeyIdentifier && signerInfo.SignerIdentifier.Type == SubjectIdentifierType.SubjectKeyIdentifier && string.Compare(counterSignerInfo.SignerIdentifier.Value as string, signerInfo.SignerIdentifier.Value as string, StringComparison.OrdinalIgnoreCase) == 0) { this.RemoveCounterSignature(PkcsUtils.GetSignerIndex(this.m_signedCms.GetCryptMsgHandle(), this, 0), childIndex); return; } } } } throw new CryptographicException(-2146889714); }
private unsafe void Verify(X509Certificate2Collection extraStore, X509Certificate2 certificate, bool verifySignatureOnly) { SafeLocalAllocHandle pvData1 = SafeLocalAllocHandle.InvalidHandle; CAPI.CERT_CONTEXT certContext = (CAPI.CERT_CONTEXT)Marshal.PtrToStructure(X509Utils.GetCertContext(certificate).DangerousGetHandle(), typeof(CAPI.CERT_CONTEXT)); IntPtr ptr1 = new IntPtr((long)new IntPtr((long)certContext.pCertInfo + (long)Marshal.OffsetOf(typeof(CAPI.CERT_INFO), "SubjectPublicKeyInfo")) + (long)Marshal.OffsetOf(typeof(CAPI.CERT_PUBLIC_KEY_INFO), "Algorithm")); IntPtr num1 = new IntPtr((long)ptr1 + (long)Marshal.OffsetOf(typeof(CAPI.CRYPT_ALGORITHM_IDENTIFIER), "Parameters")); if ((int)CAPI.CryptFindOIDInfo(1U, Marshal.ReadIntPtr(ptr1), 3U).Algid == 8704) { bool flag = false; IntPtr ptr2 = new IntPtr((long)num1 + (long)Marshal.OffsetOf(typeof(CAPI.CRYPTOAPI_BLOB), "cbData")); IntPtr ptr3 = new IntPtr((long)num1 + (long)Marshal.OffsetOf(typeof(CAPI.CRYPTOAPI_BLOB), "pbData")); if (Marshal.ReadInt32(ptr2) == 0) { flag = true; } else if (Marshal.ReadIntPtr(ptr3) == IntPtr.Zero) { flag = true; } else if (Marshal.ReadInt32(Marshal.ReadIntPtr(ptr3)) == 5) { flag = true; } if (flag) { SafeCertChainHandle invalidHandle = SafeCertChainHandle.InvalidHandle; X509Utils.BuildChain(new IntPtr(0L), X509Utils.GetCertContext(certificate), (X509Certificate2Collection)null, (OidCollection)null, (OidCollection)null, X509RevocationMode.NoCheck, X509RevocationFlag.ExcludeRoot, DateTime.Now, new TimeSpan(0, 0, 0), ref invalidHandle); invalidHandle.Dispose(); uint pcbData = 0U; if (!CAPI.CAPISafe.CertGetCertificateContextProperty(X509Utils.GetCertContext(certificate), 22U, pvData1, out pcbData)) { throw new CryptographicException(Marshal.GetLastWin32Error()); } if (pcbData > 0U) { pvData1 = CAPI.LocalAlloc(64U, new IntPtr((long)pcbData)); if (!CAPI.CAPISafe.CertGetCertificateContextProperty(X509Utils.GetCertContext(certificate), 22U, pvData1, out pcbData)) { throw new CryptographicException(Marshal.GetLastWin32Error()); } Marshal.WriteInt32(ptr2, (int)pcbData); Marshal.WriteIntPtr(ptr3, pvData1.DangerousGetHandle()); } } } if (this.m_parentSignerInfo == null) { if (!CAPI.CryptMsgControl(this.m_signedCms.GetCryptMsgHandle(), 0U, 1U, certContext.pCertInfo)) { throw new CryptographicException(Marshal.GetLastWin32Error()); } } else { int num2 = -1; int hr = 0; SafeLocalAllocHandle pvData2; while (true) { try { num2 = PkcsUtils.GetSignerIndex(this.m_signedCms.GetCryptMsgHandle(), this.m_parentSignerInfo, num2 + 1); } catch (CryptographicException ex) { if (hr != 0) { throw new CryptographicException(hr); } throw; } uint cbData = 0U; pvData2 = SafeLocalAllocHandle.InvalidHandle; PkcsUtils.GetParam(this.m_signedCms.GetCryptMsgHandle(), 28U, (uint)num2, out pvData2, out cbData); if ((int)cbData == 0) { hr = -2146885618; } else { fixed(byte *numPtr = this.m_encodedSignerInfo) { if (!CAPI.CAPISafe.CryptMsgVerifyCountersignatureEncoded(IntPtr.Zero, 65537U, pvData2.DangerousGetHandle(), cbData, new IntPtr((void *)numPtr), (uint)this.m_encodedSignerInfo.Length, certContext.pCertInfo)) { hr = Marshal.GetLastWin32Error(); } else { break; } } } } // ISSUE: fixed variable is out of scope // ISSUE: __unpin statement __unpin(numPtr); pvData2.Dispose(); } if (!verifySignatureOnly) { int hr = SignerInfo.VerifyCertificate(certificate, extraStore); if (hr != 0) { throw new CryptographicException(hr); } } pvData1.Dispose(); }
internal static unsafe int GetSignerIndex(SafeCryptMsgHandle safeCrytpMsgHandle, SignerInfo signerInfo, int startIndex) { uint num1 = 0U; uint num2 = (uint)Marshal.SizeOf(typeof(uint)); if (!CAPI.CAPISafe.CryptMsgGetParam(safeCrytpMsgHandle, 5U, 0U, new IntPtr((void *)&num1), new IntPtr((void *)&num2))) { PkcsUtils.checkErr(Marshal.GetLastWin32Error()); } for (int index = startIndex; index < (int)num1; ++index) { uint num3 = 0U; if (!CAPI.CAPISafe.CryptMsgGetParam(safeCrytpMsgHandle, 6U, (uint)index, IntPtr.Zero, new IntPtr((void *)&num3))) { PkcsUtils.checkErr(Marshal.GetLastWin32Error()); } if (num3 > 0U) { SafeLocalAllocHandle pvData = CAPI.LocalAlloc(0U, new IntPtr((long)num3)); if (!CAPI.CAPISafe.CryptMsgGetParam(safeCrytpMsgHandle, 6U, (uint)index, pvData, new IntPtr((void *)&num3))) { PkcsUtils.checkErr(Marshal.GetLastWin32Error()); } CAPI.CMSG_SIGNER_INFO cmsgSignerInfo1 = signerInfo.GetCmsgSignerInfo(); CAPI.CMSG_SIGNER_INFO cmsgSignerInfo2 = (CAPI.CMSG_SIGNER_INFO)Marshal.PtrToStructure(pvData.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_INFO)); if (X509Utils.MemEqual((byte *)(void *)cmsgSignerInfo1.Issuer.pbData, cmsgSignerInfo1.Issuer.cbData, (byte *)(void *)cmsgSignerInfo2.Issuer.pbData, cmsgSignerInfo2.Issuer.cbData) && X509Utils.MemEqual((byte *)(void *)cmsgSignerInfo1.SerialNumber.pbData, cmsgSignerInfo1.SerialNumber.cbData, (byte *)(void *)cmsgSignerInfo2.SerialNumber.pbData, cmsgSignerInfo2.SerialNumber.cbData)) { return(index); } pvData.Dispose(); } } throw new CryptographicException(-2146889714); }