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C# BlobBuilder.TryWriteBytes方法代码示例

本文整理汇总了C#中System.Reflection.Metadata.BlobBuilder.TryWriteBytes方法的典型用法代码示例。如果您正苦于以下问题:C# BlobBuilder.TryWriteBytes方法的具体用法?C# BlobBuilder.TryWriteBytes怎么用?C# BlobBuilder.TryWriteBytes使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Reflection.Metadata.BlobBuilder的用法示例。


在下文中一共展示了BlobBuilder.TryWriteBytes方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: TestChecksumAndAuthenticodeSignature

        private static bool TestChecksumAndAuthenticodeSignature(Stream peStream, byte[] privateKeyOpt = null)
        {
            var peHeaders = new PEHeaders(peStream);
            bool is32bit = peHeaders.PEHeader.Magic == PEMagic.PE32;
            uint expectedChecksum = peHeaders.PEHeader.CheckSum;
            int peHeadersSize = peHeaders.PEHeaderStartOffset + PEHeader.Size(is32bit) + SectionHeader.Size * peHeaders.SectionHeaders.Length;

            peStream.Position = 0;

            if (expectedChecksum == 0)
            {
                // not signed
                return false;
            }

            int peSize = (int)peStream.Length;
            var peImage = new BlobBuilder(peSize);
            Assert.Equal(peSize, peImage.TryWriteBytes(peStream, peSize));

            var buffer = peImage.GetBlobs().Single().Buffer;
            var checksumBlob = new Blob(buffer, peHeaders.PEHeaderStartOffset + PEHeader.OffsetOfChecksum, sizeof(uint));

            uint checksum = PEBuilder.CalculateChecksum(peImage, checksumBlob);
            Assert.Equal(expectedChecksum, checksum);

            // validate signature:
            if (privateKeyOpt != null)
            {
                // signature is calculated with checksum zeroed:
                new BlobWriter(checksumBlob).WriteUInt32(0);

                int snOffset;
                Assert.True(peHeaders.TryGetDirectoryOffset(peHeaders.CorHeader.StrongNameSignatureDirectory, out snOffset));
                var snBlob = new Blob(buffer, snOffset, peHeaders.CorHeader.StrongNameSignatureDirectory.Size);
                var expectedSignature = snBlob.GetBytes().ToArray();
                var signature = SigningUtilities.CalculateRsaSignature(PEBuilder.GetContentToSign(peImage, peHeadersSize, peHeaders.PEHeader.FileAlignment, snBlob), privateKeyOpt);
                AssertEx.Equal(expectedSignature, signature);
            }

            return true;
        }
开发者ID:geoffkizer,项目名称:corefx,代码行数:41,代码来源:PEBuilderTests.cs


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