Encrypt Text Online
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Issue Description
Hint: Describe what you want to build or paste your code, select target language, and click Generate.
How It Works
- Step 1: Enter plaintext message and encryption password (passphrase) for secure text encryption using client-side JavaScript cryptography libraries.
- Step 2: The tool generates encryption key from password using PBKDF2 (Password-Based Key Derivation Function 2) with salt and iterations for key strengthening.
- Step 3: Encrypts text using AES-256-GCM (Advanced Encryption Standard, 256-bit key, Galois/Counter Mode) providing confidentiality and authenticity with authentication tag.
- Step 4: Outputs encrypted ciphertext as base64-encoded string with salt and IV (initialization vector) for decryption, all processing happens client-side ensuring text never leaves browser.
Manual vs Automated Text Encryption
| Feature | Manual Encryption | AI-Powered Encryptor |
|---|---|---|
| Encryption Strength | Weak manual ciphers or simple XOR | Military-grade AES-256-GCM |
| Key Derivation | Direct password use (insecure) | PBKDF2 with salt and iterations |
| Implementation | Write crypto code from scratch | One-click encryption with best practices |
| Security | Risk of implementation errors | Tested cryptographic libraries |
| Decryption | Manually reverse encryption process | Built-in decrypt with same password |
| Privacy | Upload to third-party services | 100% client-side, zero data transmission |
Text Encryption Examples
Example: AES Text Encryption
Plaintext: "Confidential meeting at 3 PM"
Password: "MySecurePassword123!"Encrypted Output:
Ciphertext (Base64):
U2FsdGVkX1+vupppZksvRf5pq5g5XjFRIipRkwB0K1Y96Qsv2Lm+31cmzaAILwyt
Encryption Details:
Algorithm: AES-256-GCM
Key Size: 256 bits (32 bytes)
Mode: GCM (Galois/Counter Mode)
IV: Randomly generated (12 bytes)
Salt: Randomly generated (16 bytes)
Authentication Tag: Included (16 bytes)
Encryption Process:
1. Password → PBKDF2 → 256-bit Key
Iterations: 100,000
Hash: SHA-256
Salt: 16 random bytes
2. Plaintext → AES-256-GCM → Ciphertext
IV: 12 random bytes (nonce)
Key: Derived from password
Output: Encrypted data + Auth tag
3. Package: Salt + IV + Ciphertext + Tag
Encoding: Base64 for text transmission
Decryption Requirements:
✓ Correct password (MySecurePassword123!)
✓ Same algorithm (AES-256-GCM)
✓ Included salt and IV
✓ Valid authentication tag
Security Features:
✓ Confidentiality: AES-256 encryption
✓ Authenticity: GCM authentication tag
✓ Key Derivation: PBKDF2 with 100k iterations
✓ Randomness: Unique salt and IV per encryption
✓ Client-side: No server transmission
Use Cases:
✓ Encrypt sensitive notes
✓ Secure password storage
✓ Protect confidential messages
✓ Encrypt API keys before sharing
✓ Secure clipboard data
Security Notes:
⚠️ Password strength critical (use 12+ characters)
⚠️ Store encrypted text and password separately
⚠️ Losing password = permanent data loss
⚠️ Not suitable for large files (use file encryption)
✓ Client-side processing (private, no uploads)Key Changes:
The encryption tool uses AES-256-GCM, a symmetric authenticated encryption algorithm providing both confidentiality and integrity. AES-256 uses 256-bit keys (32 bytes), considered secure against brute-force attacks—2^256 possible keys would take billions of years to exhaust. GCM (Galois/Counter Mode) adds authentication, preventing tampering—any modification to ciphertext causes decryption failure. The tool derives encryption key from password using PBKDF2 with 100,000 iterations, slowing brute-force password attacks. The salt (random 16 bytes) ensures identical passwords produce different keys, preventing rainbow table attacks. The IV (initialization vector, 12 bytes for GCM) must be unique per encryption to prevent pattern analysis. The authentication tag (16 bytes) verifies ciphertext integrity during decryption. Base64 encoding converts binary ciphertext to text format for transmission via text channels (email, chat, clipboard). Client-side encryption ensures plaintext never reaches servers—all cryptographic operations happen in browser using Web Crypto API. Password strength is critical—weak passwords (dictionary words, short length) are vulnerable to brute-force despite strong encryption. Users encrypt sensitive notes, API keys, passwords, or confidential messages before storing in cloud services or sending via insecure channels. The tool demonstrates symmetric encryption where the same password encrypts and decrypts—losing the password means permanent data loss, as there's no recovery mechanism.
Frequently Asked Questions
How does text encryption work?
Text encryption converts your plain text into an unreadable format using a password/key. Our tool uses AES-256 encryption, a military-grade encryption standard. Only someone with the correct password can decrypt and read the encrypted text.
Is it safe to encrypt text online?
Yes! All encryption happens locally in your browser. Your text and password never leave your device or get sent to any server. The encryption is performed entirely client-side using JavaScript.
What is AES-256 encryption?
AES-256 (Advanced Encryption Standard with 256-bit key) is one of the most secure encryption methods available. It's used by governments and security experts worldwide to protect classified information.
Can I decrypt the text later?
Yes! Keep your password safe. To decrypt, paste the encrypted text, enter the same password you used for encryption, and click "Decrypt Text". Without the correct password, the text cannot be decrypted.
What can I encrypt with this tool?
You can encrypt any text including messages, notes, passwords, API keys, personal information, or any sensitive data you want to protect. The encrypted output can be safely stored or shared.