public RepeatedField<ObjectId> UnknownExtendedKeyUsages { get; }
Used to describe extended key usages that are not listed in the
[KeyUsage.ExtendedKeyUsageOptions][google.cloud.security.privateca.v1.KeyUsage.ExtendedKeyUsageOptions]
message.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eKeyUsage\u003c/code\u003e class within the Certificate Authority v1 API is 3.9.0, with other available versions ranging from 3.8.0 down to 1.0.0.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eKeyUsage\u003c/code\u003e is a class that defines key usage values as they appear in X.509 certificates.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eKeyUsage\u003c/code\u003e class inherits from \u003ccode\u003eobject\u003c/code\u003e and implements \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable<KeyUsage>\u003c/code\u003e, \u003ccode\u003eIDeepCloneable<KeyUsage>\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eKeyUsage\u003c/code\u003e class has properties such as \u003ccode\u003eBaseKeyUsage\u003c/code\u003e, \u003ccode\u003eExtendedKeyUsage\u003c/code\u003e, and \u003ccode\u003eUnknownExtendedKeyUsages\u003c/code\u003e to detail the various ways in which a key can be used.\u003c/p\u003e\n"],["\u003cp\u003eThe namespace for this class is \u003ccode\u003eGoogle.Cloud.Security.PrivateCA.V1\u003c/code\u003e, and it is contained within the \u003ccode\u003eGoogle.Cloud.Security.PrivateCA.V1.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"]]],[],null,["# Certificate Authority v1 API - Class KeyUsage (3.10.0)\n\nVersion latestkeyboard_arrow_down\n\n- [3.10.0 (latest)](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/latest/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.9.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.9.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.8.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.8.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.7.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.7.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.6.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.6.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.5.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.5.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.4.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.3.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.2.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.1.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.1.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [3.0.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/3.0.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [2.3.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/2.3.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [2.2.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/2.2.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [2.1.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/2.1.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [2.0.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/2.0.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage)\n- [1.0.0](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/1.0.0/Google.Cloud.Security.PrivateCA.V1.KeyUsage) \n\n public sealed class KeyUsage : IMessage\u003cKeyUsage\u003e, IEquatable\u003cKeyUsage\u003e, IDeepCloneable\u003cKeyUsage\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Certificate Authority v1 API class KeyUsage.\n\nA \\[KeyUsage\\]\\[google.cloud.security.privateca.v1.KeyUsage\\] describes key usage\nvalues that may appear in an X.509 certificate. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e KeyUsage \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[KeyUsage](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/latest/Google.Cloud.Security.PrivateCA.V1.KeyUsage), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[KeyUsage](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/latest/Google.Cloud.Security.PrivateCA.V1.KeyUsage), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[KeyUsage](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/latest/Google.Cloud.Security.PrivateCA.V1.KeyUsage), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.Security.PrivateCA.V1](/dotnet/docs/reference/Google.Cloud.Security.PrivateCA.V1/latest/Google.Cloud.Security.PrivateCA.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.Security.PrivateCA.V1.dll\n\nConstructors\n------------\n\n### KeyUsage()\n\n public KeyUsage()\n\n### KeyUsage(KeyUsage)\n\n public KeyUsage(KeyUsage other)\n\nProperties\n----------\n\n### BaseKeyUsage\n\n public KeyUsage.Types.KeyUsageOptions BaseKeyUsage { get; set; }\n\nDescribes high-level ways in which a key may be used.\n\n### ExtendedKeyUsage\n\n public KeyUsage.Types.ExtendedKeyUsageOptions ExtendedKeyUsage { get; set; }\n\nDetailed scenarios in which a key may be used.\n\n### UnknownExtendedKeyUsages\n\n public RepeatedField\u003cObjectId\u003e UnknownExtendedKeyUsages { get; }\n\nUsed to describe extended key usages that are not listed in the\n\\[KeyUsage.ExtendedKeyUsageOptions\\]\\[google.cloud.security.privateca.v1.KeyUsage.ExtendedKeyUsageOptions\\]\nmessage."]]
