Is this tool private?

Yes. All processing happens locally in your browser. No data is uploaded.

What extras does this tool have?

Extras: (1) Core function, (2) Batch mode, (3) Copy results, (4) Download, (5) History, (6) CSV export, (7) Custom options, (8) Validation, (9) Warnings, (10) Stats, (11) Multi-format, (12) Configurable, (13) Preview.

Network, Runs in your browser

RSA Encryption Tool

RSA encrypt/decrypt with WebCrypto API, key generation, and OAEP padding. 100% private. 100% private.

100% Private Works Offline Instant

Key size

Padding mode

Max plaintext

190 B

acceptable~112-bit symmetric

Plaintext

10 / 190 bytes

Public key (JWK)Private key (JWK)

Key size comparison

Key size,Symmetric bits,Level,Est. years
1024,80,deprecated,1
2048,112,acceptable,1000000
4096,152,very-strong,1000000000000

JWK shape (planned)

{
  "kty": "RSA",
  "key_ops": [
    "encrypt"
  ],
  "ext": true,
  "alg": "RSA-OAEP-SHA256",
  "n": "",
  "e": ""
}

Privacy: key generation, encryption, and decryption happen entirely in your browser via WebCrypto.

RSA encrypt/decrypt with WebCrypto API, key generation, and OAEP padding. 100% private. 100% private. Everything runs locally in your browser — your data never leaves your device.

How to use

Enter your input in the tool above.
Adjust any options to your preference.
Use the Copy or Download buttons to save the result.
Everything happens locally — your data never leaves your browser.

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