Elliptic curve cryptography (ECC) in Dart

Elliptic curve cryptography lib for EOS based blockchain in Dart lang.

BitLength

• Use BitLength.aes16 to apply 128 bit AES encryption and decryption.
• Use BitLength.aes24 to apply 192 bit AES encryption and decryption.
• Use BitLength.aes32 to apply 256 bit AES encryption and decryption.
• Default is BitLength.aes32.

AES Padding

• PKCS5/ECB is the default padding mode.

Usage

A simple usage example:

class Example {
  ECC ecc = ECC.initialise(wifPrivateKey: '<YOUR_WIF_PRIVATE_KEY>');

  getKeys(){
    print('Private Key: ${ecc.privateKey}');
    print('Public Key: ${ecc.publicKey}');
    encrypt();
  }

  encrypt(){
    String message = 'Hello World';
    String? encrypted = ecc.encrypt(data: message);
    print('Encrypted: $encrypted');
    print('Decrypted: ${decrypt(encrypted ?? '')}');
  }

  decrypt(String message){
    return ecc.decrypt(data: message);
  }

}

Sample Output

Private Key: 5JaLPBezdxEV8vcYhzA27rFxda4JJiSneacnerYSPDoRt7K1ZEA
Public Key: EOS6obgFpmdbb2xNJHqoTStA4DMzDvNTwk1V255wz2AdjQTbiqKNs
Encrypted: do721rp9jGvQeavPmDw34A==
Decrypted: Hello World

References

eosjs-ecc: https://github.com/EOSIO/eosjs-ecc

eos-encrypt: https://github.com/EOS-Nation/eos-encrypt

Notes

In case you find any functionality is missing, please feel free to contact us.