Browser-local crypto sandbox

Crypto Security Suite

Use the native Web Crypto API for AES and RSA, with a local RC4 compatibility mode. Inputs, keys, and results stay in this browser.

Local

Input

INPUT

Operation AES mode

Passphrase / RC4 key Plaintext or ciphertext RSA size

Ready.

Result

OUTPUT

Security badge: pure local processing, data never touches the network.

This crypto security suite is built for developers who need quick AES encryption, RSA test-key generation, or legacy RC4 checks without leaving the browser. AES-256 CBC/GCM and RSA-OAEP use the native Web Crypto API, while RC4 is provided as a local compatibility routine for old data flows. The page has no backend and does not upload plaintext, keys, or ciphertext.

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