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Imported Upstream version 5.4.0.167

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Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2017-08-21 15:34:15 +00:00
parent e49d6f06c0
commit 536cd135cc
12856 changed files with 563812 additions and 223249 deletions
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49
mcs/class/referencesource/System.Activities/System/Activities/Debugger/Symbol/SymbolHelper.cs
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@ -14,6 +14,24 @@ namespace System.Activities.Debugger.Symbol
internal static class SymbolHelper
{
static readonly Guid Md5IdentifierGuid = new Guid("406ea660-64cf-4c82-b6f0-42d48172a799");
static readonly Guid Sha1IdentifierGuid = new Guid("ff1816ec-aa5e-4d10-87f7-6f4963833460");
public static Guid ChecksumProviderId
{
get
{
if (LocalAppContextSwitches.UseMD5ForWFDebugger)
{
return Md5IdentifierGuid;
}
else
{
return Sha1IdentifierGuid;
}
}
}
// This is the same Encode/Decode logic as the WCF FramingEncoder
public static int ReadEncodedInt32(BinaryReader reader)
{
@ -61,8 +79,6 @@ namespace System.Activities.Debugger.Symbol
return count;
}
[SuppressMessage("Microsoft.Cryptographic.Standard", "CA5350:MD5CannotBeUsed",
Justification = "Design has been approved. We are not using MD5 for any security or cryptography purposes but rather as a hash.")]
public static byte[] CalculateChecksum(string fileName)
{
Fx.Assert(!string.IsNullOrEmpty(fileName), "fileName should not be empty or null");
@ -71,8 +87,10 @@ namespace System.Activities.Debugger.Symbol
{
using (StreamReader streamReader = new StreamReader(fileName))
{
MD5 md5 = new MD5CryptoServiceProvider();
checksum = md5.ComputeHash(streamReader.BaseStream);
using (HashAlgorithm hashAlgorithm = CreateHashProvider())
{
checksum = hashAlgorithm.ComputeHash(streamReader.BaseStream);
}
}
}
catch (IOException)
@ -108,7 +126,28 @@ namespace System.Activities.Debugger.Symbol
internal static bool ValidateChecksum(byte[] checksumToValidate)
{
// We are using MD5.ComputeHash, which will return a 16 byte array.
return checksumToValidate.Length == 16;
if (LocalAppContextSwitches.UseMD5ForWFDebugger)
{
return checksumToValidate.Length == 16;
}
else
{
return checksumToValidate.Length == 20;
}
}
[SuppressMessage("Microsoft.Cryptographic.Standard", "CA5350:MD5CannotBeUsed",
Justification = "Design has been approved. We are not using MD5 for any security or cryptography purposes but rather as a hash.")]
static HashAlgorithm CreateHashProvider()
{
if (LocalAppContextSwitches.UseMD5ForWFDebugger)
{
return new MD5CryptoServiceProvider();
}
else
{
return new SHA1CryptoServiceProvider();
}
}
}
}