Build with BITE

BITE Protocol provides threshold encryption on SKALE chains. Encrypts transaction data so mempool only sees encrypted bytes.

What is BITE?

• Encrypts to + calldata in transactions
• Threshold decryption: 2t+1 of 3t+1 validators needed
• Works on all Solidity contracts (no contract changes needed)
• MEV-resistant

Primitives

Primitive	Description	Chains
Encrypted TX	Encrypt to + calldata	SKALE Base, SKALE Base Sepolia
CTX	Conditional Transactions	BITE V2 Sandbox 2

Chain Requirements

Encrypted Transactions:

• SKALE Base (1187947933)
• SKALE Base Sepolia (324705682)

CTX:

• BITE V2 Sandbox 2 (coordinate with SKALE team)

SDK Usage

Install: npm install @skalenetwork/bite

import { BITE } from '@skalenetwork/bite';
const bite = new BITE('https://base-sepolia-testnet.skalenodes.com/v1/jubilant-horrible-ancha');

// Encrypt transaction
const encrypted = await bite.encryptTransaction({ 
    to: "0xContractAddress", 
    data: "0xCalldata" 
});

// Send with wallet - CRITICAL: set gas manually
const tx = await wallet.sendTransaction({
    ...encrypted,
    gasLimit: 300_000
});

Get Decrypted Data

const { data, to } = await bite.getDecryptedTransactionData(txHash);

Committee Info

const committees = await bite.getCommitteesInfo();
// length === 2 means rotation in progress (3 min window)

Solidity (CTX)

Install: forge install skalenetwork/bite-solidity

pragma solidity >=0.8.27;

import { BITE } from "@skalenetwork/bite-solidity/BITE.sol";
import { IBiteSupplicant } from "@skalenetwork/bite-solidity/interfaces/IBiteSupplicant.sol";

contract Secret is IBiteSupplicant {
    bytes public message;
    
    function reveal(bytes calldata encrypted) external payable {
        BITE.submitCTX(
            BITE.SUBMIT_CTX_ADDRESS,
            msg.value / tx.gasprice,
            encrypted,
            new bytes[](0)
        );
    }
    
    function onDecrypt(bytes[] calldata decrypted, bytes[] calldata) external override {
        message = decrypted[0];
    }
}

Compiler Settings

For CTX contracts:

• Solidity >=0.8.27
• EVM istanbul

solc_version = "0.8.27"
evm_version = "istanbul"

Key Rules

• Gas: Always set manually (default 300k) - estimateGas doesn't work with BITE
• Committee: 3t+1 nodes, 2t+1 to decrypt
• Rotation: SDK handles dual encryption automatically
• Sender: Always public (transaction is signed)
• Encrypted: to address and calldata
• Public: sender, value, gas used

Visibility Summary

Data	Encrypted
Recipient (to)	✅
Calldata	✅
Sender	❌
Value	❌
Gas used	❌

Reference: Encrypted Transactions Reference: CTX Reference: npm