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Feat: added encryption of shares #157

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Feat: added encryption of shares #157

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102 changes: 69 additions & 33 deletions src/services/keyShardingService.ts
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Original file line number Diff line number Diff line change
@@ -1,42 +1,78 @@
import { log } from 'console';
import { split as shamirSplit, combine as shamirCombine } from 'shamir-secret-sharing';
const CryptoJS = require('crypto-js');
import {
split as shamirSplit,
combine as shamirCombine,
} from 'shamir-secret-sharing'
const CryptoJS = require('crypto-js')

async function encryptData(data: string, PlatformsecretKey: string) {
// Encrypting the data using AES
const encrypted = CryptoJS.AES.encrypt(data, PlatformsecretKey).toString()
return encrypted
}

async function splitSecret(secretKey: Uint8Array) {
if (!secretKey) {
throw new Error('Secret is undefined');
}

try {
// Split the secret into 4 parts with a threshold of 4
const shares = await shamirSplit(secretKey, 4, 4);
// console.log('Shares:', shares);

const [usershare, platformShare1, platformShare2, platformShare3] = shares;
// console.log('User Share:', usershare);
// console.log('Platform Share 1:', platformShare1);
// console.log('Platform Share 2:', platformShare2);
// console.log('Platform Share 3:', platformShare3);

// Convert Uint8Array shares to strings
const userShareString = Buffer.from(usershare).toString('hex');
const platformShare1String = Buffer.from(platformShare1).toString('hex');
const platformShare2String = Buffer.from(platformShare2).toString('hex');
const platformShare3String = Buffer.from(platformShare3).toString('hex');


return { userShareString, platformShare1String ,platformShare2String , platformShare3String };
} catch (error) {
console.error('Error splitting and encrypting secret:', error);
if (!secretKey) {
throw new Error('Secret is undefined')
}

try {
// Split the secret into 4 parts with a threshold of 4
const shares = await shamirSplit(secretKey, 4, 4)

const [usershare, platformShare1, platformShare2, platformShare3] = shares
// console.log('User Share:', usershare)
// console.log('Platform Share 1:', platformShare1)
// console.log('Platform Share 2:', platformShare2)
// console.log('Platform Share 3:', platformShare3)

// Convert Uint8Array shares to strings
const userShareString = Buffer.from(usershare).toString('hex')
const platformShare1String = Buffer.from(platformShare1).toString('hex')
const platformShare2String = Buffer.from(platformShare2).toString('hex')
const platformShare3String = Buffer.from(platformShare3).toString('hex')

// Encrypt the shares
const encryptedUserShare = await encryptData(
userShareString,
platformSecretKey,
)
const encryptedPlatformShare1 = await encryptData(
platformShare1String,
platformSecretKey,
)
const encryptedPlatformShare2 = await encryptData(
platformShare2String,
platformSecretKey,
)
const encryptedPlatformShare3 = await encryptData(
platformShare3String,
platformSecretKey,
)

return {
encryptedUserShare,
encryptedPlatformShare1,
encryptedPlatformShare2,
encryptedPlatformShare3,
}
} catch (error) {
console.error('Error splitting and encrypting secret:', error)
}
}

// // Example usage
// const secret = new Uint8Array([222, 166, 113, 52, 86, 82, 126, 204, 177, 188, 253, 85, 71, 6, 130, 72, 82, 67, 155, 93, 112, 205, 136, 41, 134, 245, 81, 39, 228, 246, 7, 44, 187, 153, 10, 31, 6, 26, 126, 243, 118, 109, 16, 109, 166, 0, 82, 232, 66, 77, 193, 175, 228, 98, 239, 47, 31, 113, 133, 184, 84, 190, 11, 100]);
// const platformSecretKey = "1111";
// const userPin = '1234';
// Example usage
// const secret = new Uint8Array([
// 222, 166, 113, 52, 86, 82, 126, 204, 177, 188, 253, 85, 71, 6, 130, 72, 82,
// 67, 155, 93, 112, 205, 136, 41, 134, 245, 81, 39, 228, 246, 7, 44, 187, 153,
// 10, 31, 6, 26, 126, 243, 118, 109, 16, 109, 166, 0, 82, 232, 66, 77, 193, 175,
// 228, 98, 239, 47, 31, 113, 133, 184, 84, 190, 11, 100,
// ])
const platformSecretKey = '1111' // This should be a strong key in a real application
const userPin = '1234'

// async function main() {
// await splitSecret(secret);
// const encryptedShares = await splitSecret(secret)
// console.log('Encrypted Shares:', encryptedShares)
// }

// main()