encryptCardField method
encryptCardField encrypts a card field using the public key.
Implementation
String encryptCardField(String plainText) {
final publicKey = PublicKeyProvider().publicKey;
final encrypter = Encrypter(RSA(
publicKey: publicKey,
encoding: RSAEncoding.PKCS1,
));
return encrypter.encrypt(plainText).base64;
}