RSA Key Tool

Generate browser-side RSA key pairs and use them for short text encryption, decryption, signing and verification.

Free to useBrowser-firstBilingual helpReady on page

Tool area

Use it directly on this page

RSAPublic KeyCrypto

Tool area

The tool will be ready here as soon as the page finishes loading.

How to use

1 Generate or paste a public/private key pair.

2 Choose encrypt or decrypt mode.

3 Enter the text or Base64 cipher and review the output.

Common uses

Create demo RSA key pairs quickly

Encrypt short messages with a public key

Decrypt browser-side RSA-OAEP cipher text with a private key

FAQ

What is RSA Key Tool useful for?

Create demo RSA key pairs quickly

How do I start using RSA Key Tool?

Generate or paste a public/private key pair. Choose encrypt or decrypt mode. Enter the text or Base64 cipher and review the output.

What should I do after this result?

Most people continue with JSON Formatter, Regex Tester, HTTP Status Code Lookup next.