X509Certificate.GetExtensionValue(String) Method
Definition
Important
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Gets the DER-encoded OCTET string for the extension value
(<em>extnValue</em>) identified by the passed-in oid
String.
[Android.Runtime.Register("getExtensionValue", "(Ljava/lang/String;)[B", "GetGetExtensionValue_Ljava_lang_String_Handler")]
public abstract byte[]? GetExtensionValue (string? oid);[<Android.Runtime.Register("getExtensionValue", "(Ljava/lang/String;)[B", "GetGetExtensionValue_Ljava_lang_String_Handler")>]
abstract member GetExtensionValue : string -> byte[]Parameters
- oid
- String
the Object Identifier value for the extension.
Returns
the DER-encoded octet string of the extension value or null if it is not present.
Implements
- Attributes
Remarks
Gets the DER-encoded OCTET string for the extension value (<em>extnValue</em>) identified by the passed-in oid String. The oid string is represented by a set of nonnegative whole numbers separated by periods.
For example:<br> <table class="striped"> <caption style="display:none">Examples of OIDs and extension names</caption> <thead> <tr> <th scope="col">OID <em>(Object Identifier)</em></th> <th scope="col">Extension Name</th></tr> </thead> <tbody style="text-align:left"> <tr><th scope="row">2.5.29.14</th> <td>SubjectKeyIdentifier</td></tr> <tr><th scope="row">2.5.29.15</th> <td>KeyUsage</td></tr> <tr><th scope="row">2.5.29.16</th> <td>PrivateKeyUsage</td></tr> <tr><th scope="row">2.5.29.17</th> <td>SubjectAlternativeName</td></tr> <tr><th scope="row">2.5.29.18</th> <td>IssuerAlternativeName</td></tr> <tr><th scope="row">2.5.29.19</th> <td>BasicConstraints</td></tr> <tr><th scope="row">2.5.29.30</th> <td>NameConstraints</td></tr> <tr><th scope="row">2.5.29.33</th> <td>PolicyMappings</td></tr> <tr><th scope="row">2.5.29.35</th> <td>AuthorityKeyIdentifier</td></tr> <tr><th scope="row">2.5.29.36</th> <td>PolicyConstraints</td></tr> </tbody> </table>
Java documentation for java.security.cert.X509Extension.getExtensionValue(java.lang.String).
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