Encryption Tool - AES-256 Browser-Based

How the Encryption Tool Works

1. 01Enter the text you want to encrypt or paste encrypted text to decrypt
2. 02Choose an encryption algorithm (AES-256-GCM recommended)
3. 03Enter a strong passphrase - this is your encryption key
4. 04Click Encrypt or Decrypt to process your text
5. 05Copy the result - encrypted output is Base64-encoded for safe sharing

Understanding Encryption

Encryption transforms readable text (plaintext) into unreadable ciphertext using a mathematical algorithm and a key. Only someone with the correct key can reverse the process (decryption). AES-256-GCM, the default algorithm in this tool, is the same standard used by banks and government agencies. The '256' refers to the key length in bits - with 2^256 possible keys, brute-force attacks are impossible with current or foreseeable technology. GCM (Galois/Counter Mode) adds authenticated encryption, which means it also detects if the ciphertext has been tampered with.

When to Use Encryption

Use encryption when sharing sensitive information through insecure channels - email, chat, or cloud storage. Encrypt passwords, API keys, personal data, or confidential documents before transmitting them. This is also useful for storing sensitive notes locally. Remember: encryption protects data in transit and at rest, but both sender and receiver need to know the passphrase.

Common Use Cases

• ·Share API keys or database passwords securely with team members via email or Slack
• ·Encrypt sensitive notes before saving them in cloud storage like Google Drive or Dropbox
• ·Protect confidential client information when sending via unencrypted channels
• ·Generate a strong passphrase using our Password Generator → Strong Password Generator
• ·Create secure backup copies of sensitive configuration files

Expert Tips

• ✻Use a passphrase of at least 16 characters - combine random words for both strength and memorability
• ✻Never share the passphrase through the same channel as the encrypted message
• ✻For truly sensitive data, consider using different passphrases for different recipients
• ✻AES-256-GCM is the recommended algorithm - it provides both confidentiality and integrity verification

Frequently Asked Questions