Key Pair Generator

Generate public/private key pairs (RSA or ECC) for asymmetric encryption. Free, secure, and works directly in your browser with no registration.

Algorithm Selection

About Cryptographic Keys

RSA (Rivest-Shamir-Adleman)

RSA is one of the first public-key cryptosystems and is widely used for secure data transmission. It's based on the mathematical difficulty of factoring large prime numbers.

  • 2048-bit keys are considered secure for most applications
  • 4096-bit keys provide higher security but are slower
  • Compatible with most systems and protocols

ECC (Elliptic Curve Cryptography)

ECC is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. It offers equivalent security with smaller key sizes compared to RSA.

  • P-256 provides security equivalent to 3072-bit RSA
  • Smaller key sizes and faster computations
  • Ideal for mobile devices and constrained environments

Security Note: Keys are generated entirely in your browser using the Web Crypto API and never leave your device. Keep your private keys secure and never share them with anyone.

How to use Cryptographic Key Pair Generator

  1. Select your desired key algorithm (RSA or ECC).
  2. Click the 'Generate Key Pair' button to create your keys instantly.
  3. Download or securely copy your new public and private keys.

Features

  • Supports both RSA and ECC (Elliptic Curve) algorithms for modern cryptography.
  • Generates keys locally in your browser for maximum security and privacy.
  • Produces standard key formats (PEM) ready for use in applications.
  • Works on any device with a modern web browser, no installation needed.

Who Is This Tool For?

This tool is essential for developers, security professionals, and anyone who needs to set up SSH access, configure SSL/TLS, or implement secure communication in their applications.

Why Generate Cryptographic Key Pairs?

Generating a secure public/private key pair is the foundational step for asymmetric encryption, enabling secure SSH logins, digital signatures, and encrypted data transmission essential for modern web security and application development.

Frequently Asked Questions

Is this cryptographic key pair generator free?

Are my generated keys sent to a server?

What types of key pairs can I generate?

How do I use the generated keys?

Is there a limit to the key size I can generate?

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