checking bouncycastle certificate request for keyUsage

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How can I check my certificate Request to see if a particular KeyUsage is set?

I used the following method but somehow get a weird error that: java.lang.NoSuchMethodError: org.bouncycastle.asn1.x509.KeyUsage.hasUsages(I)Z

Here is my method:

private boolean check_keyusage( PKCS10CertificationRequest request) throws IOException {
         Attribute[] attr = request.getAttributes(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest); 
         System.out.println("attr.length = "+attr.length);
        // for(int i = 0;i<attr.length;i++){ 
             ASN1Encodable[] ext = attr[0].getAttributeValues(); 
             System.out.println("ext.length = "+ext.length);
            // for(int j = 0;j<ext.length;j++){ 
                  keyusage = KeyUsage.fromExtensions(Extensions.getInstance(ext[0])); 
            // } 
        // }        
         return keyusage.hasUsages(KeyUsage.digitalSignature);
     }

I know there is only one extension request attribute that is set(KeyUsage). Therefore I have commented the loop.Is there a better way to do this?

Thanks

asked 1 min ago

user907810

162