public bool VerifyUpdate(string filePath, Stream sha512sumFile, string originalFileName)
{
using (var hashAlgorithm = new SHA512Managed())
using (var file = this.filesystemProvider.OpenRead(filePath))
{
try
{
return(ChecksumFileUtilities.ValidateChecksum(hashAlgorithm, sha512sumFile, originalFileName, file));
}
catch (ArgumentException)
{
logger.Warn("Could not find checksum for file {0}", originalFileName);
return(false);
}
}
}
private static void Verify(string[] args)
{
if (args.Length < 5)
{
ShowHelp();
return;
}
var checksumFileName = args[1];
var algorithmName = args[2];
var certificateFileName = args[3];
var inputFileNames = args.Skip(4).ToArray();
// Signature first, then hash
using (var checksumFile = File.OpenRead(checksumFileName))
using (var certificate = File.OpenRead(certificateFileName))
{
Stream cleartext;
var passed = PgpClearsignUtilities.ReadAndVerifyFile(checksumFile, certificate, out cleartext);
using (cleartext)
{
if (!passed)
{
throw new Exception("Signature verification failed");
}
using (var hashAlgorithm = HashAlgorithm.Create(algorithmName))
{
foreach (var inputFileName in inputFileNames)
{
using (var inputFile = File.OpenRead(inputFileName))
{
var valid = ChecksumFileUtilities.ValidateChecksum(hashAlgorithm, cleartext, Path.GetFileName(inputFileName), inputFile);
if (!valid)
{
throw new Exception($"File {inputFileName} failed checksum");
}
}
}
}
}
}
Console.WriteLine("All files successfully verified");
}
