decide.nolog.cz/app/services/encryption.js

import classic from 'ember-classic-decorator';
import Service from '@ember/service';
import generatePassphrase from '../utils/generate-passphrase';
import sjcl from 'sjcl';

@classic
export default class EncryptionService extends Service {
  key = null;

  decrypt(value) {
    return JSON.parse(
      sjcl.decrypt(
        this.key,
        value
      )
    );
  }

  encrypt(value) {
    return sjcl.encrypt(
      this.key,
      JSON.stringify(value)
    );
  }

  generateKey() {
    const passphraseLength = 40;
    this.set('key', generatePassphrase(passphraseLength));
  }
}