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chain-util.js
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chain-util.js
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const EC = require('elliptic').ec;
const SHA256 = require('crypto-js/sha256');
const uuidV1 = require('uuid/v1');
const ec = new EC('secp256k1');
class ChainUtil {
static id() {
return uuidV1();
}
static genKeyPair() {
return ec.genKeyPair();
}
static hash(data) {
return SHA256(JSON.stringify(data)).toString();
}
static verifySignature(publicKey, signature, dataHash) {
return ec.keyFromPublic(publicKey, 'hex').verify(dataHash, signature);
}
}
module.exports = ChainUtil;
/*sec stands for standards of efficient cryptography. The p stands for prime, and 256 for 256 bits.
In the elliptic-based algorithm itself, a key component is a prime number to generate the curve,
and this prime number will be 256 bits, or 32 bytes/characters. K stands for Koblitz which is the name
of a notable mathematician in the field of cryptography. And 1 stands for this being the first
implementation of the curve algorithm in this standard. */