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AES / DES Encryption Tool

Encrypt or decrypt short text with AES, DES or 3DES in the browser, with selectable block mode, padding, IV and output format.

Workspace

Work here first, inspect the output, then decide the next move.
WorkflowLocal

This workspace processes the content directly in your browser.

Formatting, decoding, validation, and common file work stay local whenever possible, then continue in the same result area for copy, download, or the next step.

See related workflows
Input

Paste content, choose a file, or load a sample first.

Process

The content stays in the local browser by default.

Result

After processing, copy, download, or continue into a related workflow.

Input

Algorithm
Block mode
Padding
Cipher format
Key format
Secret key
Initialization vector (IV)
Plain text or cipher text

Result

Waiting for cipher input
Enter a key and some text

Choose encrypt or decrypt, then review the output on the right.

Best For

Encrypt or decrypt short text with AES or DES in the browser for quick testing, demos and format checks.

Common tasks

  • Test a shared secret quickly
  • Preview how browser-side encryption output looks
  • Check whether a short cipher text can be decoded with a given key
Nearby Articles
This tool does not have a dedicated article yet, so these adjacent articles are the closest matches in the same task flow.
Base64 Explained: Encoding, Padding, Data URLs, and Common Mistakes

A technical article on how Base64 turns bytes into text, why padding exists, how URL-safe variants differ, and why Base64 is not encryption.

Hex and Bytes Explained: Reading File Headers, Encodings, and Binary Clues

A technical guide to hexadecimal inspection, byte order, file signatures, BOM markers, and why byte-level debugging helps with format problems.

JSON and CSV Are Not Equivalent: What Gets Lost During Conversion

A practical technical article on converting between JSON and CSV, including nesting, headers, quoting, nulls, types, and spreadsheet assumptions.

Related Collections
Code and Data Formatting Tools

Format JSON, XML, YAML, TOML, encode text, inspect headers, and validate technical data quickly.

Cryptography and Security Tools

Work with JWT, hashes, TOTP, AES, DES, RSA, and password generation from one security toolbox.

Key Questions