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Viewing file:     encrypt.js (2.35 KB)      -rw-r--r--

import { CompactEncrypt } from '../jwe/compact/encrypt.js';
import { encoder } from '../lib/buffer_utils.js';
import { ProduceJWT } from './produce.js';
export class EncryptJWT extends ProduceJWT {
    setProtectedHeader(protectedHeader) {
        if (this._protectedHeader) {
            throw new TypeError('setProtectedHeader can only be called once');
        }
        this._protectedHeader = protectedHeader;
        return this;
    }
    setKeyManagementParameters(parameters) {
        if (this._keyManagementParameters) {
            throw new TypeError('setKeyManagementParameters can only be called once');
        }
        this._keyManagementParameters = parameters;
        return this;
    }
    setContentEncryptionKey(cek) {
        if (this._cek) {
            throw new TypeError('setContentEncryptionKey can only be called once');
        }
        this._cek = cek;
        return this;
    }
    setInitializationVector(iv) {
        if (this._iv) {
            throw new TypeError('setInitializationVector can only be called once');
        }
        this._iv = iv;
        return this;
    }
    replicateIssuerAsHeader() {
        this._replicateIssuerAsHeader = true;
        return this;
    }
    replicateSubjectAsHeader() {
        this._replicateSubjectAsHeader = true;
        return this;
    }
    replicateAudienceAsHeader() {
        this._replicateAudienceAsHeader = true;
        return this;
    }
    async encrypt(key, options) {
        const enc = new CompactEncrypt(encoder.encode(JSON.stringify(this._payload)));
        if (this._replicateIssuerAsHeader) {
            this._protectedHeader = { ...this._protectedHeader, iss: this._payload.iss };
        }
        if (this._replicateSubjectAsHeader) {
            this._protectedHeader = { ...this._protectedHeader, sub: this._payload.sub };
        }
        if (this._replicateAudienceAsHeader) {
            this._protectedHeader = { ...this._protectedHeader, aud: this._payload.aud };
        }
        enc.setProtectedHeader(this._protectedHeader);
        if (this._iv) {
            enc.setInitializationVector(this._iv);
        }
        if (this._cek) {
            enc.setContentEncryptionKey(this._cek);
        }
        if (this._keyManagementParameters) {
            enc.setKeyManagementParameters(this._keyManagementParameters);
        }
        return enc.encrypt(key, options);
    }
}