kepler

Description:

kepler

Kepler #
This package provides an api for encrypting data using public and private
keys created by the secp256k1 elliptic curve.
This is a fork of secp256k1Cipher.
Example usage.

// Create Alice's keypair
var alice = generateKeyPair();

print(
"alice private key: " +
strinifyPrivateKey(alice.privateKey as ECPrivateKey),
);
print(
"alice public key: " + strinifyPublicKey(alice.publicKey as ECPublicKey),
);

// Create Bob's keypair
var bob = generateKeyPair();

// This is what alice wants to say to bob
var rawStr = 'Encrypt and decrypt data using secp256k1';

// use alic's privatekey and bob's publickey means alice says to bob
var encMap = pubkeyEncrypt(
strinifyPrivateKey(alice.privateKey as ECPrivateKey),
strinifyPublicKey(bob.publicKey as ECPublicKey),
rawStr,
);

// Get encrypted base64 string
var encStr = encMap['enc'];
print("encrypted text: " + encStr);

// Get random IV
var iv = encMap['iv'];
print("iv: " + iv);

// Now, you can send enc_str and IV to Bob

// Use bob's privatekey and alice's publickey to decrypt alices message, for Bob to read.
var decryptd = privateDecrypt(
strinifyPrivateKey(bob.privateKey as ECPrivateKey),
strinifyPublicKey(alice.publicKey as ECPublicKey),
encStr,
iv,
);
print('decrypted text: $decryptd');
copied to clipboard