1 files changed, 234 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/RecipientInfo.ts b/third_party/js/PKI.js/src/RecipientInfo.ts
new file mode 100644
index 0000000000..3183dbc969
--- /dev/null
+++ b/third_party/js/PKI.js/src/RecipientInfo.ts
@@ -0,0 +1,234 @@
+import * as asn1js from "asn1js";
+import * as pvutils from "pvutils";
+import { KeyTransRecipientInfo, KeyTransRecipientInfoJson } from "./KeyTransRecipientInfo";
+import { KeyAgreeRecipientInfo, KeyAgreeRecipientInfoJson } from "./KeyAgreeRecipientInfo";
+import { KEKRecipientInfo, KEKRecipientInfoJson } from "./KEKRecipientInfo";
+import { PasswordRecipientinfo, PasswordRecipientInfoJson } from "./PasswordRecipientinfo";
+import { OtherRecipientInfo, OtherRecipientInfoJson } from "./OtherRecipientInfo";
+import * as Schema from "./Schema";
+import { AsnError, ParameterError } from "./errors";
+import { PkiObject, PkiObjectParameters } from "./PkiObject";
+import { EMPTY_STRING } from "./constants";
+
+const VARIANT = "variant";
+const VALUE = "value";
+const CLEAR_PROPS = [
+  "blockName"
+];
+
+export interface IRecipientInfo {
+  variant: number;
+  value?: RecipientInfoValue;
+}
+
+export interface RecipientInfoJson {
+  variant: number;
+  value?: RecipientInfoValueJson;
+}
+
+export type RecipientInfoValue = KeyTransRecipientInfo | KeyAgreeRecipientInfo | KEKRecipientInfo | PasswordRecipientinfo | OtherRecipientInfo;
+export type RecipientInfoValueJson = KeyTransRecipientInfoJson | KeyAgreeRecipientInfoJson | KEKRecipientInfoJson | PasswordRecipientInfoJson | OtherRecipientInfoJson;
+
+export type RecipientInfoParameters = PkiObjectParameters & Partial<IRecipientInfo>;
+
+/**
+ * Represents the RecipientInfo structure described in [RFC5652](https://datatracker.ietf.org/doc/html/rfc5652)
+ */
+export class RecipientInfo extends PkiObject implements IRecipientInfo {
+
+  public static override CLASS_NAME = "RecipientInfo";
+
+  public variant!: number;
+  public value?: RecipientInfoValue;
+
+  /**
+   * Initializes a new instance of the {@link RecipientInfo} class
+   * @param parameters Initialization parameters
+   */
+  constructor(parameters: RecipientInfoParameters = {}) {
+    super();
+
+    this.variant = pvutils.getParametersValue(parameters, VARIANT, RecipientInfo.defaultValues(VARIANT));
+    if (VALUE in parameters) {
+      this.value = pvutils.getParametersValue(parameters, VALUE, RecipientInfo.defaultValues(VALUE));
+    }
+
+    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 VARIANT): number;
+  public static override defaultValues(memberName: typeof VALUE): RecipientInfoValue;
+  public static override defaultValues(memberName: string): any {
+    switch (memberName) {
+      case VARIANT:
+        return (-1);
+      case VALUE:
+        return {};
+      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 VARIANT:
+        return (memberValue === RecipientInfo.defaultValues(memberName));
+      case VALUE:
+        return (Object.keys(memberValue).length === 0);
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * @inheritdoc
+   * @asn ASN.1 schema
+   * ```asn
+   * RecipientInfo ::= CHOICE {
+   *    ktri KeyTransRecipientInfo,
+   *    kari [1] KeyAgreeRecipientInfo,
+   *    kekri [2] KEKRecipientInfo,
+   *    pwri [3] PasswordRecipientinfo,
+   *    ori [4] OtherRecipientInfo }
+   *```
+   */
+  public static override schema(parameters: Schema.SchemaParameters = {}): Schema.SchemaType {
+    const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
+
+    return (new asn1js.Choice({
+      value: [
+        KeyTransRecipientInfo.schema({
+          names: {
+            blockName: (names.blockName || EMPTY_STRING)
+          }
+        }),
+        new asn1js.Constructed({
+          name: (names.blockName || EMPTY_STRING),
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 1 // [1]
+          },
+          value: KeyAgreeRecipientInfo.schema().valueBlock.value
+        }),
+        new asn1js.Constructed({
+          name: (names.blockName || EMPTY_STRING),
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 2 // [2]
+          },
+          value: KEKRecipientInfo.schema().valueBlock.value
+        }),
+        new asn1js.Constructed({
+          name: (names.blockName || EMPTY_STRING),
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 3 // [3]
+          },
+          value: PasswordRecipientinfo.schema().valueBlock.value
+        }),
+        new asn1js.Constructed({
+          name: (names.blockName || EMPTY_STRING),
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 4 // [4]
+          },
+          value: OtherRecipientInfo.schema().valueBlock.value
+        })
+      ]
+    }));
+  }
+
+  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,
+      RecipientInfo.schema({
+        names: {
+          blockName: "blockName"
+        }
+      })
+    );
+    AsnError.assertSchema(asn1, this.className);
+
+    // Get internal properties from parsed schema
+    if (asn1.result.blockName.idBlock.tagClass === 1) {
+      this.variant = 1;
+      this.value = new KeyTransRecipientInfo({ schema: asn1.result.blockName });
+    } else {
+      // Create "SEQUENCE" from "ASN1_CONSTRUCTED"
+      const blockSequence = new asn1js.Sequence({
+        value: asn1.result.blockName.valueBlock.value
+      });
+
+      switch (asn1.result.blockName.idBlock.tagNumber) {
+        case 1:
+          this.variant = 2;
+          this.value = new KeyAgreeRecipientInfo({ schema: blockSequence });
+          break;
+        case 2:
+          this.variant = 3;
+          this.value = new KEKRecipientInfo({ schema: blockSequence });
+          break;
+        case 3:
+          this.variant = 4;
+          this.value = new PasswordRecipientinfo({ schema: blockSequence });
+          break;
+        case 4:
+          this.variant = 5;
+          this.value = new OtherRecipientInfo({ schema: blockSequence });
+          break;
+        default:
+          throw new Error("Incorrect structure of RecipientInfo block");
+      }
+    }
+  }
+
+  public toSchema(): asn1js.BaseBlock<any> {
+    // Construct and return new ASN.1 schema for this object
+    ParameterError.assertEmpty(this.value, "value", "RecipientInfo");
+    const _schema = this.value.toSchema();
+
+    switch (this.variant) {
+      case 1:
+        return _schema;
+      case 2:
+      case 3:
+      case 4:
+        // Create "ASN1_CONSTRUCTED" from "SEQUENCE"
+        _schema.idBlock.tagClass = 3; // CONTEXT-SPECIFIC
+        _schema.idBlock.tagNumber = (this.variant - 1);
+
+        return _schema;
+      default:
+        return new asn1js.Any() as any;
+    }
+  }
+
+  public toJSON(): RecipientInfoJson {
+    const res: RecipientInfoJson = {
+      variant: this.variant
+    };
+
+    if (this.value && (this.variant >= 1) && (this.variant <= 4)) {
+      res.value = this.value.toJSON();
+    }
+
+    return res;
+  }
+
+}