Encryption & Decryption Tool
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User Guide
Step 1: Select your preferred encryption algorithm (AES-256 is recommended for maximum security)
Step 2: Choose the key length - longer keys provide stronger encryption
Step 3: Enter your secret key or click "Generate" to create a random secure key
Step 4: Enter the text you want to encrypt or decrypt
Step 5: Click "Encrypt Text" or "Decrypt Text" depending on your need
Step 6: Your result will appear below with detailed statistics
Step 7: Use the "Copy" button to copy the result to your clipboard
Important: Save your encryption key securely! Without it, you cannot decrypt your data.
This advanced encryption/decryption tool provides military-grade security for your sensitive text data. Built with modern cryptographic standards, it offers multiple encryption algorithms including AES-256, which is trusted by governments and security professionals worldwide.
The tool operates entirely in your browser using client-side JavaScript, ensuring that your data never leaves your device. No information is transmitted to any server, providing you with complete privacy and security. Your encryption keys are generated using cryptographically secure random number generators and are never stored anywhere on this site.
Whether you're protecting personal messages, securing sensitive business data, or learning about cryptography, this tool provides enterprise-level security with a user-friendly interface.
- AES-256 is unbreakable: With current technology, it would take billions of years to crack AES-256 encryption through brute force
- Adopted by NSA: AES-256 is approved by the U.S. National Security Agency for TOP SECRET information
- Quantum-resistant: AES-256 is considered quantum-resistant, meaning even quantum computers would struggle to break it
- Key importance: The strength of encryption depends entirely on keeping your key secret
- One-way without key: Without the correct key, encrypted data is virtually impossible to decrypt
- Used worldwide: AES is the most widely used encryption standard globally, trusted by banks, governments, and tech companies
- Client-side security: This tool processes everything locally in your browser for maximum privacy
- No data storage: Your keys and data are never stored, logged, or transmitted to any server
- Personal Privacy: Encrypt personal messages, diary entries, or sensitive notes before storing them in cloud services
- Password Protection: Encrypt and store your password lists or recovery codes securely
- Business Communications: Protect confidential business information, trade secrets, or financial data
- Legal Documents: Secure sensitive legal documents, contracts, or client information
- Healthcare Data: Protect patient information and medical records in compliance with privacy regulations
- Developer Tools: Encrypt API keys, tokens, or configuration data before storing in version control
- Educational Purposes: Learn about cryptography and encryption techniques hands-on
- Secure Sharing: Encrypt text before sharing via email or messaging apps, then share the key separately
- Data Backup: Encrypt sensitive data before backing up to external drives or cloud storage
- Compliance: Meet data protection requirements like GDPR, HIPAA, or PCI-DSS
- Use strong keys: Always use randomly generated keys with maximum length for best security
- Never share keys insecurely: Don't send encryption keys through the same channel as encrypted data
- Store keys safely: Use a password manager or secure offline storage for your encryption keys
- Use unique keys: Generate a different key for each piece of sensitive data
- Test decryption: Always verify you can decrypt your data before deleting the original
- Bookmark important keys: Save critical encryption keys in multiple secure locations
- Consider key backup: For very important data, consider storing encrypted backups of your keys
- Use AES-256: For maximum security, always choose AES-256 with 256-bit keys
- Clear clipboard: Clear your clipboard after copying sensitive encrypted data or keys
- Regular updates: Periodically re-encrypt important data with new keys for added security
- Offline mode: You can download this page and use it offline for air-gapped security
- Browser security: Use this tool in private/incognito mode for additional privacy
Algorithm: AES-256
Key: mySecretKey123456789012345678901
Plain Text: Hello, this is a secret message!
Encrypted: U2FsdGVkX1+8xF4v5K3... (Base64 encoded)
Algorithm: AES-256
Key: (Randomly generated 32-character key)
Plain Text: Email: john@example.com, Password: MyP@ssw0rd!
Use Case: Encrypt password list before storing in notes
Algorithm: Base64 (Simple Encoding)
Plain Text: Confidential Data
Encoded: Q29uZmlkZW50aWFsIERhdGE=
Note: Base64 is not encryption, only encoding (reversible without key)
Scenario: Encrypting API credentials before storing in documentation
Algorithm: AES-256 with 256-bit key
Plain Text: API_KEY=sk_live_4eC39HqLyjWDarjtT1zdp7dc
Benefit: Even if documentation is leaked, API key remains secure
- NIST AES Standard: Official Advanced Encryption Standard (FIPS 197) documentation from the National Institute of Standards and Technology
- RFC 2898: PKCS #5: Password-Based Cryptography Specification - Industry standard for key derivation
- OWASP Cryptographic Storage: Guidelines for secure cryptographic storage from the Open Web Application Security Project
- Crypto.js Library: Industry-standard JavaScript cryptography library used by millions of developers
- Web Crypto API: Modern browser API for cryptographic operations with hardware acceleration
- AES Security Analysis: Published research papers and security audits on AES encryption
- GDPR Encryption Guidelines: European data protection requirements for encryption
- NSA Suite B Cryptography: Cryptographic algorithms approved for protecting classified information
Recommended Reading:
- "Applied Cryptography" by Bruce Schneier - Comprehensive guide to modern cryptography
- "Cryptography Engineering" by Niels Ferguson - Practical cryptographic system design
- "Serious Cryptography" by Jean-Philippe Aumasson - Modern cryptography explained clearly
| Feature | Details |
|---|---|
| Price | Free |
| Rendering | Client-Side Rendering |
| Language | JavaScript |
| Paywall | No |
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