Crypto

AES Encrypt / Decrypt

AES-256-CBC encryption and decryption. 100% client-side — data never leaves browser.

AES-256-CBC. Key is derived with PBKDF2-SHA256. IV is random for encrypt, required for decrypt. 100% client-side.

How to use

  1. Enter a domain, URL, or value relevant to AES Encrypt / Decrypt.
  2. Run the check and review the output carefully.
  3. Apply recommended fixes, then run the check again to verify.

Common use cases

  • Pre-deployment validation for AES Encrypt / Decrypt.
  • Incident triage when security checks fail in production.
  • Periodic security review as part of technical SEO and hardening.

Example inputs

Encrypt with passwordDecrypt with same key + IV

Common issues and fixes

Wrong IV

Decryption needs same IV as encryption. IV is not secret but must match.

Weak key

Use strong password. PBKDF2 derives key — short keys are vulnerable.

IV reuse

Never reuse IV with same key. Generate random IV per encryption.

Recommended remediation

Generate new IV each encrypt. Store IV with ciphertext (first 16 bytes or separate). Use AES-GCM for auth.

FAQ

Is AES Encrypt / Decrypt free to use?

Yes. This tool is free and can be used without account registration.

Do you store submitted values?

Only the minimum processing needed for the check. For client-side tools, data stays in your browser.

How should I use these results?

Use the output as a diagnostic baseline, apply fixes in your stack, then re-run the check to confirm remediation.

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