1. Acceptance of Terms
By downloading, installing, accessing, or using the AsymLock mobile application, website, or related services, collectively referred to as the “App”, you agree to be bound by these Terms of Service, referred to as the “Terms.”
If you do not agree to these Terms, you must not download, install, access, or use the App.
These Terms form a legal agreement between you and Wong, the developer and operator of AsymLock.
2. Description of the App
AsymLock is an offline text encryption tool designed to help users secure text communications using asymmetric cryptography and related cryptographic methods.
The App allows users to:
- generate cryptographic key pairs;
- import and manage public keys;
- encrypt text using a recipient’s public key;
- digitally sign encrypted text using the sender’s private key;
- verify digital signatures using the sender’s public key;
- decrypt received encrypted text using the recipient’s private key;
- copy encrypted text blocks and share them through third-party services such as WhatsApp, SMS, email, or other messaging platforms.
AsymLock does not operate a central message server and does not provide message delivery services. You are responsible for choosing how and where to send encrypted text blocks generated by the App.
3. Cryptographic Mechanics
AsymLock uses industry-standard cryptographic methods, including 25519-family elliptic-curve cryptography or similar cryptographic techniques implemented within the App.
Encryption
To send a secure message, you must import your intended recipient’s public key. The App uses that public key to encrypt your text so that only the corresponding private key should be able to decrypt it.
Digital Signatures
To help prove that a message came from you, the App may use your private key to digitally sign the encrypted text. The recipient must use your corresponding public key to verify the signature and confirm the message origin.
Public Key Verification
You are responsible for verifying that any public key you import actually belongs to the intended person. If you use an incorrect, outdated, spoofed, or malicious public key, your messages may be readable by the wrong person, or you may incorrectly trust a forged or spoofed identity.
AsymLock cannot independently verify the real-world identity of any user or key holder.
4. Local Data Storage and Zero-Knowledge Design
AsymLock is designed to operate locally on your device. Encryption, decryption, key generation, signing, and signature verification are performed on your device.
When we describe AsymLock as “zero-knowledge,” we mean that the developers of AsymLock do not receive, store, or have access to your message content, cryptographic keys, or local message history through the App.
Local Key Storage
Your generated cryptographic key pairs, including public and private keys, are stored locally on your device.
Local Message History
The App may store encrypted message blocks and related message history locally on your device for your convenience.
Imported Public Keys
The App may store public keys that you import from other users so that you can encrypt messages to them or verify their signatures.
No Developer Access
We do not collect, transmit, store, read, or recover your private keys, message content, contacts, or local message history on external servers.
Because your data is stored locally, we cannot recover your private key, decrypt your messages, restore your local message history, or access your App data for you.
5. User Responsibilities and Key Management
You are responsible for your use of AsymLock and for protecting your device, keys, and encrypted communications.
Private Key Protection
You are solely responsible for safeguarding your private key. If you lose, delete, overwrite, or compromise your private key, you may permanently lose the ability to decrypt messages or sign new messages.
AsymLock cannot recover lost private keys under any circumstances.
Device Security
The security of your encrypted messages, keys, and local message history depends on the security of your device. If your device is compromised by malware, spyware, keyloggers, unauthorized physical access, insecure backups, or weak device security settings, your keys and local App data may be exposed.
You should protect your device with a strong passcode, biometric authentication where available, updated operating system software, and other appropriate security measures.
Backups and Device Migration
Depending on your device settings, operating system, and backup configuration, locally stored App data may be included in device backups, cloud backups, or device migration tools. Such backups are controlled by your device, operating system provider, or backup provider, not by AsymLock.
You are responsible for managing your backup settings and protecting any backups that may contain App data.
Clipboard Use
If you copy messages, encrypted text blocks, public keys, private keys, or other information to your device clipboard, that information may be temporarily stored or accessible according to your operating system and device settings. Other apps or system features may be able to access clipboard content in some circumstances.
6. Lawful Use
You agree to use AsymLock only for lawful purposes and in accordance with these Terms.
You must not use the App to:
- violate any applicable law or regulation;
- harass, threaten, abuse, defame, or harm others;
- transmit malicious code, malware, or harmful content;
- facilitate fraud, exploitation, illegal surveillance, or other unlawful activity;
- infringe the rights of others;
- interfere with or attempt to compromise the security or functionality of the App.
We reserve the right to restrict, suspend, or discontinue access to the App where required by law or where we reasonably believe these Terms have been violated.
7. No Emergency or High-Risk Use
AsymLock is not designed or intended for emergency communications, life-safety purposes, classified information, regulated professional communications, or any high-risk use where failure, delay, loss of keys, or incorrect operation of the App could result in death, personal injury, severe financial loss, legal harm, or other significant damage.
8. Third-Party Services
AsymLock generates encrypted text blocks that you may choose to copy and send through third-party services, including but not limited to WhatsApp, iMessage, SMS, email providers, cellular networks, cloud services, or other messaging platforms.
AsymLock is not affiliated with, endorsed by, or responsible for these third-party services. Your use of third-party platforms is governed by their respective terms of service and privacy policies.
Once you transmit information through a third-party service, that service may process, store, scan, log, deliver, delay, block, or disclose that information according to its own policies and applicable law. AsymLock does not control those third-party services.
9. App Store and Platform Terms
If you download AsymLock from the Apple App Store, Google Play Store, or another app distribution platform, your download and use of the App may also be subject to that platform’s terms, policies, and privacy practices.
10. Updates and Changes to the App
We may update, modify, suspend, or discontinue all or part of the App at any time, with or without notice.
Updates may include bug fixes, security improvements, feature changes, or changes to cryptographic implementation. You are responsible for keeping the App updated where updates are available.
We do not guarantee that any feature will always be available or that older versions of the App will continue to function indefinitely.
11. Intellectual Property
All rights, title, and interest in and to AsymLock, including its software, code, design, interface, logos, trademarks, text, graphics, and other content, are owned by Wong or its licensors.
You are granted a limited, personal, non-exclusive, non-transferable, revocable license to use the App for lawful purposes in accordance with these Terms.
You must not:
- copy, modify, distribute, sell, lease, sublicense, or commercially exploit the App;
- reverse-engineer, decompile, disassemble, or attempt to derive the source code of the App, except where expressly permitted by applicable law;
- remove copyright, trademark, or proprietary notices;
- use the App’s branding without prior written permission.
12. Export Control and Sanctions Compliance
Because AsymLock includes encryption functionality, it may be subject to export control, sanctions, and encryption-related laws and regulations.
You agree to comply with all applicable export control, sanctions, and encryption-related laws. You must not download, use, export, re-export, transfer, or provide access to the App in violation of applicable laws or to any prohibited country, entity, or individual.
You represent that you are not located in, under the control of, or a national or resident of any country or territory where use of the App would be prohibited by applicable law.
13. Disclaimer of Warranties
THE APP IS PROVIDED ON AN “AS IS” AND “AS AVAILABLE” BASIS.
To the maximum extent permitted by applicable law, AsymLock, Wong, its developers, owners, affiliates, and licensors disclaim all warranties, whether express, implied, statutory, or otherwise, including but not limited to warranties of merchantability, fitness for a particular purpose, title, non-infringement, accuracy, availability, reliability, and security.
While the App is designed to use industry-standard cryptographic methods, we do not warrant that:
- the App will be free from vulnerabilities, bugs, errors, or interruptions;
- encryption or signature verification will be suitable for every use case;
- your device, operating system, clipboard, backups, or third-party services will be secure;
- messages will always be recoverable, readable, deliverable, or verifiable;
- the App will protect against all possible threats, including malware, compromised devices, user error, incorrect public keys, or future cryptographic attacks.
You use the App at your own risk.
14. Limitation of Liability
To the maximum extent permitted by applicable law, AsymLock, Wong, its developers, owners, affiliates, and licensors shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, goodwill, data, messages, keys, or other intangible losses arising out of or relating to your use of, or inability to use, the App.
This includes, without limitation, damages resulting from:
- lost, deleted, corrupted, or compromised private keys;
- inability to decrypt messages;
- failure to verify a public key correctly;
- messages encrypted to the wrong public key;
- spoofed, forged, intercepted, delayed, blocked, or undelivered messages;
- compromised devices, malware, spyware, keyloggers, or unauthorized access;
- insecure backups or clipboard exposure;
- third-party messaging platforms, app stores, operating systems, or service providers;
- bugs, vulnerabilities, errors, or failures in the App.
To the maximum extent permitted by law, our total liability for any claim arising out of or relating to the App or these Terms shall not exceed the greater of:
- the amount you paid to use the App in the twelve months before the claim arose; or
- USD $50.
Some jurisdictions do not allow certain limitations of liability, so some of the above limitations may not apply to you.
15. Indemnification
You agree to indemnify, defend, and hold harmless AsymLock, Wong, its developers, owners, affiliates, licensors, and service providers from and against any claims, liabilities, damages, losses, costs, and expenses, including reasonable legal fees, arising out of or relating to:
- your use or misuse of the App;
- your violation of these Terms;
- your violation of any law or regulation;
- your infringement or violation of any rights of another person or entity;
- content or messages you create, encrypt, sign, decrypt, transmit, or share using the App.
16. Privacy
Your use of the App is also governed by our Privacy Policy, which explains how information is handled when you use AsymLock.
Because AsymLock is designed to operate locally and offline, we do not collect, transmit, or store your message content, cryptographic keys, or local message history through the App. Please review the Privacy Policy carefully.
17. Changes to These Terms
We may modify or replace these Terms from time to time. If we make material changes, we will make reasonable efforts to provide notice, such as by updating the Terms on our website, app store listing, or within the App where practical.
The updated Terms will become effective when posted or otherwise made available, unless a later effective date is stated.
By continuing to use the App after the updated Terms become effective, you agree to be bound by the revised Terms. If you do not agree to the revised Terms, you must stop using the App.
18. Termination
You may stop using the App at any time.
We may suspend, restrict, or terminate your access to the App where required by law, where the App is discontinued, or where we reasonably believe that you have violated these Terms.
Sections relating to intellectual property, disclaimers, limitation of liability, indemnification, privacy, governing law, and any provisions that by their nature should survive termination shall survive termination of these Terms.
19. Governing Law
These Terms shall be governed by and interpreted in accordance with the laws of Malaysia, without regard to conflict of law principles.
Any dispute arising out of or relating to these Terms or the App shall be subject to the courts or dispute resolution forum located in Malaysia, unless applicable law requires otherwise.
