1 files changed, 199 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/MacData.ts b/third_party/js/PKI.js/src/MacData.ts
new file mode 100644
index 0000000000..ec9ccc747d
--- /dev/null
+++ b/third_party/js/PKI.js/src/MacData.ts
@@ -0,0 +1,199 @@
+import * as asn1js from "asn1js";
+import * as pvutils from "pvutils";
+import { EMPTY_STRING } from "./constants";
+import { DigestInfo, DigestInfoJson, DigestInfoSchema } from "./DigestInfo";
+import { AsnError } from "./errors";
+import { PkiObject, PkiObjectParameters } from "./PkiObject";
+import * as Schema from "./Schema";
+
+const MAC = "mac";
+const MAC_SALT = "macSalt";
+const ITERATIONS = "iterations";
+const CLEAR_PROPS = [
+  MAC,
+  MAC_SALT,
+  ITERATIONS
+];
+
+export interface IMacData {
+  mac: DigestInfo;
+  macSalt: asn1js.OctetString;
+  iterations?: number;
+}
+
+export interface MacDataJson {
+  mac: DigestInfoJson;
+  macSalt: asn1js.OctetStringJson;
+  iterations?: number;
+}
+
+export type MacDataParameters = PkiObjectParameters & Partial<IMacData>;
+
+export type MacDataSchema = Schema.SchemaParameters<{
+  mac?: DigestInfoSchema;
+  macSalt?: string;
+  iterations?: string;
+}>;
+
+/**
+ * Represents the MacData structure described in [RFC7292](https://datatracker.ietf.org/doc/html/rfc7292)
+ */
+export class MacData extends PkiObject implements IMacData {
+
+  public static override CLASS_NAME = "MacData";
+
+  public mac!: DigestInfo;
+  public macSalt!: asn1js.OctetString;
+  public iterations?: number;
+
+  /**
+   * Initializes a new instance of the {@link MacData} class
+   * @param parameters Initialization parameters
+   */
+  constructor(parameters: MacDataParameters = {}) {
+    super();
+
+    this.mac = pvutils.getParametersValue(parameters, MAC, MacData.defaultValues(MAC));
+    this.macSalt = pvutils.getParametersValue(parameters, MAC_SALT, MacData.defaultValues(MAC_SALT));
+    if (ITERATIONS in parameters) {
+      this.iterations = pvutils.getParametersValue(parameters, ITERATIONS, MacData.defaultValues(ITERATIONS));
+    }
+
+    if (parameters.schema) {
+      this.fromSchema(parameters.schema);
+    }
+  }
+
+  /**
+   * Returns default values for all class members
+   * @param memberName String name for a class member
+   * @returns Default value
+   */
+  public static override defaultValues(memberName: typeof MAC): DigestInfo;
+  public static override defaultValues(memberName: typeof MAC_SALT): asn1js.OctetString;
+  public static override defaultValues(memberName: typeof ITERATIONS): number;
+  public static override defaultValues(memberName: string): any {
+    switch (memberName) {
+      case MAC:
+        return new DigestInfo();
+      case MAC_SALT:
+        return new asn1js.OctetString();
+      case ITERATIONS:
+        return 1;
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * Compare values with default values for all class members
+   * @param memberName String name for a class member
+   * @param memberValue Value to compare with default value
+   */
+  public static compareWithDefault(memberName: string, memberValue: any): boolean {
+    switch (memberName) {
+      case MAC:
+        return ((DigestInfo.compareWithDefault("digestAlgorithm", memberValue.digestAlgorithm)) &&
+          (DigestInfo.compareWithDefault("digest", memberValue.digest)));
+      case MAC_SALT:
+        return (memberValue.isEqual(MacData.defaultValues(memberName)));
+      case ITERATIONS:
+        return (memberValue === MacData.defaultValues(memberName));
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * @inheritdoc
+   * @asn ASN.1 schema
+   * ```asn
+   * MacData ::= SEQUENCE {
+   *    mac           DigestInfo,
+   *    macSalt       OCTET STRING,
+   *    iterations    INTEGER DEFAULT 1
+   *    -- Note: The default is for historical reasons and its use is
+   *    -- deprecated. A higher value, like 1024 is recommended.
+   *    }
+   *```
+   */
+  public static override schema(parameters: MacDataSchema = {}): Schema.SchemaType {
+    const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
+
+    return (new asn1js.Sequence({
+      name: (names.blockName || EMPTY_STRING),
+      optional: (names.optional || true),
+      value: [
+        DigestInfo.schema(names.mac || {
+          names: {
+            blockName: MAC
+          }
+        }),
+        new asn1js.OctetString({ name: (names.macSalt || MAC_SALT) }),
+        new asn1js.Integer({
+          optional: true,
+          name: (names.iterations || ITERATIONS)
+        })
+      ]
+    }));
+  }
+
+  public fromSchema(schema: Schema.SchemaType): void {
+    // Clear input data first
+    pvutils.clearProps(schema, CLEAR_PROPS);
+
+    // Check the schema is valid
+    const asn1 = asn1js.compareSchema(schema,
+      schema,
+      MacData.schema({
+        names: {
+          mac: {
+            names: {
+              blockName: MAC
+            }
+          },
+          macSalt: MAC_SALT,
+          iterations: ITERATIONS
+        }
+      })
+    );
+    AsnError.assertSchema(asn1, this.className);
+
+    // Get internal properties from parsed schema
+    this.mac = new DigestInfo({ schema: asn1.result.mac });
+    this.macSalt = asn1.result.macSalt;
+    if (ITERATIONS in asn1.result)
+      this.iterations = asn1.result.iterations.valueBlock.valueDec;
+  }
+
+  public toSchema(): asn1js.Sequence {
+    //#region Construct and return new ASN.1 schema for this object
+    const outputArray: any[] = [
+      this.mac.toSchema(),
+      this.macSalt
+    ];
+
+    if (this.iterations !== undefined) {
+      outputArray.push(new asn1js.Integer({ value: this.iterations }));
+    }
+
+    return (new asn1js.Sequence({
+      value: outputArray
+    }));
+    //#endregion
+  }
+
+  public toJSON(): MacDataJson {
+    const res: MacDataJson = {
+      mac: this.mac.toJSON(),
+      macSalt: this.macSalt.toJSON(),
+    };
+
+    if (this.iterations !== undefined) {
+      res.iterations = this.iterations;
+    }
+
+    return res;
+  }
+
+}