Text hash generator
Calculate SHA-256, SHA-384, SHA-512, SHA-1, MD5 or CRC32 over UTF-8 text.
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Security & hashes
RSA-OAEP text encryption
Encrypt a short UTF-8 message with an RSA public key using OAEP and SHA-256.
Free to useProcessed on your device
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About this tool
Encrypt a short UTF-8 message with an RSA public key using OAEP and SHA-256.
How to use
- Enter the data and required algorithm settings.
- Run the calculation locally in your browser.
- Copy or download the result. Preserve required keys and parameters for later verification.
Everything runs locally in this browser. Web Crypto requires HTTPS. Keep keys and passwords private and save your own recovery copies; this website cannot recover them. RSA is for short messages. A 2048-bit key accepts at most 190 UTF-8 bytes; use AES-GCM for large text or files.
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