RSA Encryption / Decryption

Asymmetric encryption with public/private key pairs. Generate keys and encrypt/decrypt data client-side.

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RSA is not suitable for large data — it is limited by key size. For large payloads, use AES to encrypt the data and RSA to encrypt the AES key (hybrid encryption).

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Key Pair Generation

RSA

Key Size

Hash Algorithm

Padding Mode

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Key Pair

Public Key (PEM)

Private Key (PEM)

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Keep your private key secret. Never share it or paste it into untrusted tools.

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Encrypt / Decrypt

Plaintext / Ciphertext *

Output

Encrypted / decrypted result will appear here…