52 lines
1.6 KiB
Markdown
52 lines
1.6 KiB
Markdown
## SignedXml and EncryptedXml Breaking Changes
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### Scope
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Minor
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### Version Introduced
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4.6.2
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### Source Analyzer Status
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Planned
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### Change Description
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In .NET Framework 4.6.2, Security fixes in
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<xref:System.Security.Cryptography.Xml.SignedXml?displayProperty=name> and
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<xref:System.Security.Cryptography.Xml.EncryptedXml?displayProperty=name> lead
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to different run-time behaviors. For example,
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* If a document has multiple elements with the same `id` attribute and a
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signature targets one of those elements as the root of the signature, the
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document will now be considered invalid.
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* Documents using non-canonical XPath transform algorithms in references are now
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considered invalid.
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* Documents using non-canonical XSLT transform algorithms in references are now
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consider invalid.
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* Any program making use of external resource detached signatures will be unable
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to do so.
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- [ ] Quirked
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- [ ] Build-time break
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### Recommended Action
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Developers might want to review the usage of
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<xref:System.Security.Cryptography.Xml.XmlDsigXsltTransform> and
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<xref:System.Security.Cryptography.Xml.XmlDsigXsltTransform>, as well as types
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derived from <xref:System.Security.Cryptography.Xml.Transform> since a document
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receiver may not be able to process it.
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### Affected APIs
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* `T:System.Security.Cryptography.Xml.Transform`
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* `T:System.Security.Cryptography.Xml.XmlDsigXPathTransform`
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* `T:System.Security.Cryptography.Xml.XmlDsigXsltTransform`
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### Category
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Security
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[More information](https://github.com/Microsoft/dotnet/blob/master/releases/net462/dotnet462-changes.md)
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<!-- breaking change id: 156 -->
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