JSONYAML Tools

AES Decryption Tool

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Decrypt AES encrypted text back to original format using Advanced Encryption Standard. Secure processing happens locally in your browser.

AES Decryption: Decrypt Advanced Encryption Standard Data Online

Securely decrypt your AES-encrypted data back to its original format using our professional AES decryption tool. Whether you need to decrypt confidential documents, recover encrypted files, or access AES-protected data, our tool supports all AES key sizes (128, 192, 256-bit) and cipher modes (CBC, ECB, GCM, CTR) with complete privacy and security.

Why Use Our AES Decryption Tool?

  • Complete Key Size Support: Decrypt AES-128, AES-192, and AES-256 encrypted data.
  • Multiple Cipher Modes: Support for CBC, ECB, GCM, CTR, and other AES operation modes.
  • File & Text Recovery: Decrypt documents, images, databases, and any encrypted files.
  • Automatic Mode Detection: Smart detection of encryption parameters for easier decryption.
  • Real-Time Processing: Instant decryption results as you provide encrypted data and keys.
  • Privacy Protection: All decryption happens locally - your keys and data never leave your browser.
  • Error Handling: Clear error messages help troubleshoot decryption issues.
  • Batch Processing: Decrypt multiple files or data blocks efficiently.
  • Cross-Platform Compatibility: Decrypt AES data created on any platform or system.

How AES Decryption Works

  1. Paste your AES-encrypted data or upload encrypted files.
  2. Enter the encryption key used during the original encryption process.
  3. Specify the cipher mode (CBC, ECB, GCM, CTR) used for encryption.
  4. Provide the initialization vector (IV) if required by the cipher mode.
  5. The tool validates encryption parameters and begins decryption.
  6. Original data is recovered and displayed or available for download.
  7. Verify the decrypted content matches your expectations.

AES Decryption Features

🔐 Multiple Key Sizes

Support for AES-128, AES-192, and AES-256 bit encryption keys for maximum compatibility.

⚡ Instant Results

Real-time decryption with immediate feedback and error handling for quick troubleshooting.

🛡️ Privacy First

All decryption happens locally in your browser - no data sent to servers.

📁 File Support

Decrypt both text data and encrypted files with full format preservation.

Use Cases & Applications

  • Document Recovery: Decrypt encrypted documents, contracts, and confidential files.
  • Database Decryption: Access encrypted database fields and sensitive records.
  • Backup Restoration: Decrypt encrypted backup files and disaster recovery data.
  • Communication Security: Decrypt secure messages and encrypted communications.
  • Cloud File Access: Decrypt files that were encrypted before cloud storage upload.
  • Legal & Compliance: Access encrypted data for legal discovery and compliance audits.
  • Forensic Analysis: Decrypt data during security investigations and forensic examinations.
  • System Migration: Decrypt data during system migrations and platform changes.
  • Security Testing: Verify encryption implementations and security protocols.

Frequently Asked Questions

What do I need to decrypt AES-encrypted data?

You need the encrypted data, the original encryption key, cipher mode, and IV (if applicable). All parameters must match the encryption settings.

Can I decrypt AES data without the original key?

No, AES is cryptographically secure. You must have the exact key used for encryption to decrypt the data.

Is my decryption key sent to any servers?

No, all decryption happens locally in your browser. Your keys and data never leave your device, ensuring complete security.

What cipher modes are supported?

We support CBC, ECB, GCM, CTR, and other standard AES operation modes for maximum compatibility.

Security & Privacy

Our AES Decryption tool prioritizes your security and privacy. All decryption operations are performed entirely within your browser using JavaScript cryptographic libraries. No encryption keys, decrypted data, or any sensitive information is transmitted to our servers or stored anywhere outside your device.

The tool follows industry-standard AES implementation practices and is compatible with encrypted data created by any standard AES encryption tool or library. Whether you're a security professional, developer, or end user, you can trust our tool to handle your sensitive data with the highest level of security.