sign method Null safety
- CryptoRSAPrivateKey key,
- Uint8List message
Implementation
static Uint8List sign(CryptoRSAPrivateKey key, Uint8List message) {
RSASigner signer = RSASigner(SHA256Digest(), '0609608648016503040201');
signer.init(true, PrivateKeyParameter<RSAPrivateKey>(key));
RSASignature signature = signer.generateSignature(message);
return signature.bytes;
}