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import * as asn1js from "asn1js";
import * as pvutils from "pvutils";
import { AlgorithmIdentifier, AlgorithmIdentifierJson, AlgorithmIdentifierSchema } from "./AlgorithmIdentifier";
import { EMPTY_STRING } from "./constants";
import { AsnError } from "./errors";
import { PkiObject, PkiObjectParameters } from "./PkiObject";
import * as Schema from "./Schema";
const KEY_DERIVATION_FUNC = "keyDerivationFunc";
const ENCRYPTION_SCHEME = "encryptionScheme";
const CLEAR_PROPS = [
KEY_DERIVATION_FUNC,
ENCRYPTION_SCHEME
];
export interface IPBES2Params {
keyDerivationFunc: AlgorithmIdentifier;
encryptionScheme: AlgorithmIdentifier;
}
export interface PBES2ParamsJson {
keyDerivationFunc: AlgorithmIdentifierJson;
encryptionScheme: AlgorithmIdentifierJson;
}
export type PBES2ParamsParameters = PkiObjectParameters & Partial<IPBES2Params>;
/**
* Represents the PBES2Params structure described in [RFC2898](https://www.ietf.org/rfc/rfc2898.txt)
*/
export class PBES2Params extends PkiObject implements IPBES2Params {
public static override CLASS_NAME = "PBES2Params";
public keyDerivationFunc!: AlgorithmIdentifier;
public encryptionScheme!: AlgorithmIdentifier;
/**
* Initializes a new instance of the {@link PBES2Params} class
* @param parameters Initialization parameters
*/
constructor(parameters: PBES2ParamsParameters = {}) {
super();
this.keyDerivationFunc = pvutils.getParametersValue(parameters, KEY_DERIVATION_FUNC, PBES2Params.defaultValues(KEY_DERIVATION_FUNC));
this.encryptionScheme = pvutils.getParametersValue(parameters, ENCRYPTION_SCHEME, PBES2Params.defaultValues(ENCRYPTION_SCHEME));
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 KEY_DERIVATION_FUNC): AlgorithmIdentifier;
public static override defaultValues(memberName: typeof ENCRYPTION_SCHEME): AlgorithmIdentifier;
public static override defaultValues(memberName: string): any {
switch (memberName) {
case KEY_DERIVATION_FUNC:
return new AlgorithmIdentifier();
case ENCRYPTION_SCHEME:
return new AlgorithmIdentifier();
default:
return super.defaultValues(memberName);
}
}
/**
* @inheritdoc
* @asn ASN.1 schema
* ```asn
* PBES2-params ::= SEQUENCE {
* keyDerivationFunc AlgorithmIdentifier {{PBES2-KDFs}},
* encryptionScheme AlgorithmIdentifier {{PBES2-Encs}} }
*```
*/
public static override schema(parameters: Schema.SchemaParameters<{
keyDerivationFunc?: AlgorithmIdentifierSchema;
encryptionScheme?: AlgorithmIdentifierSchema;
}> = {}): Schema.SchemaType {
const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
return (new asn1js.Sequence({
name: (names.blockName || EMPTY_STRING),
value: [
AlgorithmIdentifier.schema(names.keyDerivationFunc || {}),
AlgorithmIdentifier.schema(names.encryptionScheme || {})
]
}));
}
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,
PBES2Params.schema({
names: {
keyDerivationFunc: {
names: {
blockName: KEY_DERIVATION_FUNC
}
},
encryptionScheme: {
names: {
blockName: ENCRYPTION_SCHEME
}
}
}
})
);
AsnError.assertSchema(asn1, this.className);
// Get internal properties from parsed schema
this.keyDerivationFunc = new AlgorithmIdentifier({ schema: asn1.result.keyDerivationFunc });
this.encryptionScheme = new AlgorithmIdentifier({ schema: asn1.result.encryptionScheme });
}
public toSchema(): asn1js.Sequence {
// Construct and return new ASN.1 schema for this object
return (new asn1js.Sequence({
value: [
this.keyDerivationFunc.toSchema(),
this.encryptionScheme.toSchema()
]
}));
}
public toJSON(): PBES2ParamsJson {
return {
keyDerivationFunc: this.keyDerivationFunc.toJSON(),
encryptionScheme: this.encryptionScheme.toJSON()
};
}
}
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