fix: add missing cryptoRef to cryptoProperties.protocolPropertiesfor XML/PB (#502)

fixes #498

Author: stevespringett

schema/bom-1.6.proto

@@ -2190,6 +2190,8 @@ message CryptoProperties {
     repeated CryptoProtocolCipherSuite cipherSuites = 3;
     // The IKEv2 transform types supported (types 1-4), defined in RFC7296 section 3.3.2, and additional properties.
     optional Ikev2TransformTypes ikev2TransformTypes = 4;
+    // The bom-ref(s) to protocol-related cryptographic assets
+    repeated string cryptoRef = 5;
   } // end of ProtocolProperties
   // Cryptographic assets occur in several forms. Algorithms and protocols are most commonly implemented in specialized cryptographic libraries. They may, however, also be 'hardcoded' in software components. Certificates and related cryptographic material like keys, tokens, secrets or passwords are other cryptographic assets to be modelled.
   CryptoAssetType assetType = 1;

schema/bom-1.6.xsd

@@ -7310,6 +7310,11 @@ limitations under the License.
                                 </xs:sequence>
                             </xs:complexType>
                         </xs:element>
+                        <xs:element name="cryptoRef" type="bom:refType" minOccurs="0" maxOccurs="unbounded">
+                            <xs:annotation>
+                                <xs:documentation>A protocol-related cryptographic assets</xs:documentation>
+                            </xs:annotation>
+                        </xs:element>
                     </xs:sequence>
                 </xs:complexType>
             </xs:element>