1 files changed, 207 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/RecipientKeyIdentifier.ts b/third_party/js/PKI.js/src/RecipientKeyIdentifier.ts
new file mode 100644
index 0000000000..1d4a8a9ddc
--- /dev/null
+++ b/third_party/js/PKI.js/src/RecipientKeyIdentifier.ts
@@ -0,0 +1,207 @@
+import * as asn1js from "asn1js";
+import * as pvutils from "pvutils";
+import { EMPTY_STRING } from "./constants";
+import { AsnError } from "./errors";
+import { OtherKeyAttribute, OtherKeyAttributeJson, OtherKeyAttributeSchema } from "./OtherKeyAttribute";
+import { PkiObject, PkiObjectParameters } from "./PkiObject";
+import * as Schema from "./Schema";
+
+const SUBJECT_KEY_IDENTIFIER = "subjectKeyIdentifier";
+const DATE = "date";
+const OTHER = "other";
+const CLEAR_PROPS = [
+  SUBJECT_KEY_IDENTIFIER,
+  DATE,
+  OTHER,
+];
+
+export interface IRecipientKeyIdentifier {
+  subjectKeyIdentifier: asn1js.OctetString;
+  date?: asn1js.GeneralizedTime;
+  other?: OtherKeyAttribute;
+}
+
+export interface RecipientKeyIdentifierJson {
+  subjectKeyIdentifier: asn1js.OctetStringJson;
+  date?: asn1js.BaseBlockJson;
+  other?: OtherKeyAttributeJson;
+}
+
+export type RecipientKeyIdentifierParameters = PkiObjectParameters & Partial<IRecipientKeyIdentifier>;
+
+export type RecipientKeyIdentifierSchema = Schema.SchemaParameters<{
+  subjectKeyIdentifier?: string;
+  date?: string;
+  other?: OtherKeyAttributeSchema;
+}>;
+
+/**
+ * Represents the RecipientKeyIdentifier structure described in [RFC5652](https://datatracker.ietf.org/doc/html/rfc5652)
+ */
+export class RecipientKeyIdentifier extends PkiObject implements IRecipientKeyIdentifier {
+
+  public static override CLASS_NAME = "RecipientKeyIdentifier";
+
+  public subjectKeyIdentifier!: asn1js.OctetString;
+  public date?: asn1js.GeneralizedTime;
+  public other?: OtherKeyAttribute;
+
+  /**
+   * Initializes a new instance of the {@link RecipientKeyIdentifier} class
+   * @param parameters Initialization parameters
+   */
+  constructor(parameters: RecipientKeyIdentifierParameters = {}) {
+    super();
+
+    this.subjectKeyIdentifier = pvutils.getParametersValue(parameters, SUBJECT_KEY_IDENTIFIER, RecipientKeyIdentifier.defaultValues(SUBJECT_KEY_IDENTIFIER));
+    if (DATE in parameters) {
+      this.date = pvutils.getParametersValue(parameters, DATE, RecipientKeyIdentifier.defaultValues(DATE));
+    }
+    if (OTHER in parameters) {
+      this.other = pvutils.getParametersValue(parameters, OTHER, RecipientKeyIdentifier.defaultValues(OTHER));
+    }
+
+    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 SUBJECT_KEY_IDENTIFIER): asn1js.OctetString;
+  public static override defaultValues(memberName: typeof DATE): asn1js.GeneralizedTime;
+  public static override defaultValues(memberName: typeof OTHER): OtherKeyAttribute;
+  public static override defaultValues(memberName: string): any {
+    switch (memberName) {
+      case SUBJECT_KEY_IDENTIFIER:
+        return new asn1js.OctetString();
+      case DATE:
+        return new asn1js.GeneralizedTime();
+      case OTHER:
+        return new OtherKeyAttribute();
+      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 SUBJECT_KEY_IDENTIFIER:
+        return (memberValue.isEqual(RecipientKeyIdentifier.defaultValues(SUBJECT_KEY_IDENTIFIER)));
+      case DATE:
+        return ((memberValue.year === 0) &&
+          (memberValue.month === 0) &&
+          (memberValue.day === 0) &&
+          (memberValue.hour === 0) &&
+          (memberValue.minute === 0) &&
+          (memberValue.second === 0) &&
+          (memberValue.millisecond === 0));
+      case OTHER:
+        return ((memberValue.keyAttrId === EMPTY_STRING) && (("keyAttr" in memberValue) === false));
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * @inheritdoc
+   * @asn ASN.1 schema
+   * ```asn
+   * RecipientKeyIdentifier ::= SEQUENCE {
+   *    subjectKeyIdentifier SubjectKeyIdentifier,
+   *    date GeneralizedTime OPTIONAL,
+   *    other OtherKeyAttribute OPTIONAL }
+   *```
+   */
+  public static override schema(parameters: RecipientKeyIdentifierSchema = {}): Schema.SchemaType {
+    const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
+
+    return (new asn1js.Sequence({
+      name: (names.blockName || EMPTY_STRING),
+      value: [
+        new asn1js.OctetString({ name: (names.subjectKeyIdentifier || EMPTY_STRING) }),
+        new asn1js.GeneralizedTime({
+          optional: true,
+          name: (names.date || EMPTY_STRING)
+        }),
+        OtherKeyAttribute.schema(names.other || {})
+      ]
+    }));
+  }
+
+  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,
+      RecipientKeyIdentifier.schema({
+        names: {
+          subjectKeyIdentifier: SUBJECT_KEY_IDENTIFIER,
+          date: DATE,
+          other: {
+            names: {
+              blockName: OTHER
+            }
+          }
+        }
+      })
+    );
+    AsnError.assertSchema(asn1, this.className);
+
+    // Get internal properties from parsed schema
+    this.subjectKeyIdentifier = asn1.result.subjectKeyIdentifier;
+
+    if (DATE in asn1.result)
+      this.date = asn1.result.date;
+
+    if (OTHER in asn1.result)
+      this.other = new OtherKeyAttribute({ schema: asn1.result.other });
+  }
+
+  public toSchema(): asn1js.Sequence {
+    // Create array for output sequence
+    const outputArray = [];
+
+    outputArray.push(this.subjectKeyIdentifier);
+
+    if (this.date) {
+      outputArray.push(this.date);
+    }
+
+    if (this.other) {
+      outputArray.push(this.other.toSchema());
+    }
+
+    // Construct and return new ASN.1 schema for this object
+    return (new asn1js.Sequence({
+      value: outputArray
+    }));
+  }
+
+  public toJSON(): RecipientKeyIdentifierJson {
+    const res: any = {
+      subjectKeyIdentifier: this.subjectKeyIdentifier.toJSON()
+    };
+
+    if (this.date) {
+      res.date = this.date.toJSON();
+    }
+
+    if (this.other) {
+      res.other = this.other.toJSON();
+    }
+
+    return res;
+  }
+
+}