ECIES

Elliptic Curve Integrated Encryption Scheme

1. Key Generated with SECP_256k1 curve
2. Key Areement function is Elliptic-curve Diffie–Hellman (ECDH)
3. Key Derrivation Function: ANSI X9.42
4. AEAD Encryption is AES-SIV
5. MAC is used inside of AES-SIV
6. Cryptogram

The most extended encryption and decryption scheme based on ECC is the Elliptic Curve Integrated Encryption Scheme (ECIES).

As an example, any standard symmetric key encrypted with a 1024 bits RSA key produces an output of 128 bytes compared with the output of 84 bytes if the encryption is performed with one of the possible configurations of ECIES.