RSA / RSA2 Encrypt / Decrypt. Local browser processing.
Type or paste on the left — the result updates as you type.
Encrypt/decrypt with RSA-OAEP SHA-256; sign/verify with PKCS#1 v1.5 SHA-1 (RSA) or SHA-256 (RSA2). 2048-bit OAEP accepts at most 190 UTF-8 bytes.
Tool page updated: 2026-09-27