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RSAKeyValue causes CryptographicException


RSAKeyValue causes CryptographicException

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ComponentSpace Development
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If an XML signature includes <RSAKeyValue>, the following exception can occur.


System.Security.Cryptography.CryptographicException: Root element must be KeyValue
element in namepsace http://www.w3.org/2000/09/xmldsig#
 at System.Security.Cryptography.Xml.RSAKeyValue.LoadXml(XmlElement value)
 at System.Security.Cryptography.Xml.KeyInfo.LoadXml(XmlElement value)
 at System.Security.Cryptography.Xml.Signature.LoadXml(XmlElement value)
 at System.Security.Cryptography.Xml.SignedXml.LoadXml(XmlElement value)
 at ComponentSpace.Saml2.XmlSecurity.Signature.XmlSignature.Verify(XmlElement signedElement


Typically XML signatures include an <X509Certificate> rather than an <RSAKeyValue> so in most cases this bug isn't triggered.
The bug is in System.Security.Cryptography.Xml.
The fix is part of the .NET Core 2.1 release.
Refer to:
https://github.com/dotnet/corefx/issues/22229
https://github.com/dotnet/corefx/issues/24375
https://github.com/dotnet/corefx/commit/4913a996526cbf79f7bf11ca79928ff7ebd1eade#diff-d817c6a73672cbdddd4ef5f80f4012a0
The workaround is to include the following, or a later release, in the application's project file.


<PackageReference Include="System.Security.Cryptography.Xml" Version="4.5.0-preview1-25914-04"/>





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ComponentSpace Development
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