安全工具

RSA Key Generator

Generate 2048-bit or 4096-bit RSA key pairs in PEM format using the Web Crypto API — runs 100% in your browser

Options

Key Size:

How it works

  • • Uses the Web Crypto API (crypto.subtle.generateKey) — runs 100% in your browser, no data sent to any server.
  • • Generates RSA-PKCS#1-v1_5 / SHA-256 key pairs exported as SPKI (public) and PKCS#8 (private) PEM format.
  • • 2048-bit is standard for most uses; 4096-bit provides higher security but is slower to generate.
  • • Compatible with OpenSSL, SSH, TLS, JWT (RS256), and most cryptographic libraries.

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