RSA Public Key Encryptor
Encrypt secret payloads using an RSA public key (RSA-OAEP with SHA-256) in your browser. Only the private key holder can decrypt.
1 How to Use RSA Public Key Encryptor
- 1. Enter message.
- 2. Paste recipient RSA public key (PEM).
- 3. Copy encrypted ciphertext.
⚙️ Cryptographic Specifications
- Algorithm
- RSA-OAEP
- Execution Engine
- Web Cryptography API (SubtleCrypto)
- Environment
- Client Browser Sandbox
- Network Telemetry
- 0 Bytes (Zero Server Transmission)
🛡️ Security & Compliance
Enterprise developers can safely execute this tool with production secrets. Because execution takes place entirely within your browser's local V8 JavaScript runtime, no payloads are transmitted over HTTP, cached on third-party proxies, or stored in server logs.
Verified Safe for SOC2, HIPAA, and GDPR developer compliance audits.
Frequently Asked Questions
Why use RSA-OAEP?
Optimal Asymmetric Encryption Padding (OAEP) prevents chosen-ciphertext attacks against textbook RSA.
Related Cryptographic Tools
RSA Private Key Decryptor
Decrypt RSA-OAEP encrypted payloads using your private key locally in your browser. Safe execution with zero network telemetry.
RSA Key Pair Generator (2048 & 4096-bit)
Generate cryptographically secure 2048-bit, 3072-bit, and 4096-bit RSA public and private key pairs in standard PKCS#8 and SPKI PEM format in your browser.