klyn.cryptography.Cipher.rsaEncrypt
method

    public static rsaEncrypt(plainText as String, publicKeyPem as String, padding as String = "OAEP", hashAlgorithm as String = "SHA-256", outputEncoding as String = "base64") as String throws CryptoException:

Description

Encrypts text with an RSA public key.

Supported paddings:

- `OAEP` (recommended, default)
- `PKCS1`

For `OAEP`, `hashAlgorithm` controls both the OAEP digest and MGF1 digest.

Parameters

- plainText Source text interpreted as UTF-8.
- publicKeyPem PEM-encoded public key.
- padding RSA encryption padding. Defaults to `OAEP`.
- hashAlgorithm Hash used by OAEP when applicable.
- outputEncoding Output encoding: `base64`, `base64url` or `hex`.

Returns

Encoded ciphertext.

Throws

- CryptoException when encryption fails. ```klyn import klyn.cryptography keys = RSAKeyPairGenerator().generateKeyPair() encrypted = Cipher.rsaEncrypt("hello", keys.publicKeyPem) print(encrypted) ```