Crypter
A cross-platform desktop app for encrypting files and folders with strong security using a single MasterPass.
What is Crypter?
Crypter is a desktop application that encrypts files and folders using strong cryptographic standards. It solves the problem of weak passwords by deriving all encryption keys from a single MasterPass, making secure encryption both convenient and robust. The app creates .crypto archives that contain encrypted data and the public credentials needed for decryption.
Individuals and professionals who need to securely encrypt sensitive files and folders on their desktop, especially those who want to avoid managing multiple passwords or weak encryption methods.
Developers choose Crypter for its strong security-first approach, cross-platform availability, and simplified key management that doesn't sacrifice cryptographic integrity. Unlike many encryption tools, it never stores passwords on disk and uses industry-standard algorithms with proper key derivation.
Overview
🔓✨🔒 An innovative, convenient and secure encryption app
Use Cases
Best For
- Encrypting sensitive documents before cloud storage
- Securing backup folders with strong encryption
- Protecting confidential files on shared computers
- Creating encrypted archives for email attachments
- Maintaining file security across multiple operating systems
- Simplifying encryption for non-technical users with a single password
Not Ideal For
- Teams or individuals needing automatic synchronization of encrypted files across devices without manual steps
- Users who prefer command-line tools or need to integrate encryption into automated scripts
- Scenarios requiring real-time encryption or protection for data in transit, not just at rest
Pros & Cons
Pros
Derives all encryption keys from a single MasterPass using PBKDF2, reducing password fatigue while maintaining security through high iteration counts.
Uses AES-256-GCM for authenticated encryption with integrity verification, adhering to industry best practices for data protection.
Offers prebuilt binaries for macOS, Linux, and Windows via Homebrew Cask and AppImage, ensuring easy installation across major operating systems.
Never stores the MasterPass on disk and uses secure memory practices like WeakMap, minimizing exposure to local attacks.
Cons
Requires manual export and import of MasterPass credentials to decrypt files on different machines, adding complexity and potential for user error.
In version 4.0, the MasterPass must be re-entered each session, lacking convenience features like OS Keychain storage promised in v5.0.
Loss of the MasterPass results in irreversible data loss with no recovery options, relying solely on user memory.
Frequently Asked Questions
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