@opendatalabs/vana-sdk/dist/utils/crypto-utils.js

A TypeScript library for interacting with Vana Network smart contracts.

import { fromHex } from "viem";
function processWalletPublicKey(publicKey) {
  return typeof publicKey === "string" ? fromHex(
    publicKey.startsWith("0x") ? publicKey : `0x${publicKey}`,
    "bytes"
  ) : publicKey;
}
function processWalletPrivateKey(privateKey) {
  return typeof privateKey === "string" ? fromHex(
    privateKey.startsWith("0x") ? privateKey : `0x${privateKey}`,
    "bytes"
  ) : privateKey;
}
function parseEncryptedDataBuffer(encryptedBuffer) {
  return {
    iv: encryptedBuffer.slice(0, 16),
    ephemPublicKey: encryptedBuffer.slice(16, 81),
    // 65 bytes for uncompressed public key
    ciphertext: encryptedBuffer.slice(81, -32),
    mac: encryptedBuffer.slice(-32)
  };
}
function generateSeed(message) {
  const encoder = new TextEncoder();
  return encoder.encode(message);
}
function bytesEqual(a, b) {
  if (a.length !== b.length) return false;
  for (let i = 0; i < a.length; i++) {
    if (a[i] !== b[i]) return false;
  }
  return true;
}
function copyBytes(bytes) {
  return new Uint8Array(bytes);
}
function isValidPublicKeyFormat(publicKey) {
  const len = publicKey.length;
  if (len === 33) {
    return publicKey[0] === 2 || publicKey[0] === 3;
  }
  if (len === 65) {
    return publicKey[0] === 4;
  }
  if (len === 64) {
    return true;
  }
  return false;
}
function isValidPrivateKeyFormat(privateKey) {
  return privateKey.length === 32;
}
function assertUncompressedPublicKey(publicKey) {
  if (publicKey.length !== 65) {
    throw new Error(
      `Public key must be uncompressed (65 bytes), got ${publicKey.length} bytes. Use provider.normalizeToUncompressed() to convert compressed keys.`
    );
  }
  if (publicKey[0] !== 4) {
    throw new Error(
      `Uncompressed public key must start with 0x04 prefix, got 0x${publicKey[0].toString(16).padStart(2, "0")}`
    );
  }
}
export {
  assertUncompressedPublicKey,
  bytesEqual,
  copyBytes,
  generateSeed,
  isValidPrivateKeyFormat,
  isValidPublicKeyFormat,
  parseEncryptedDataBuffer,
  processWalletPrivateKey,
  processWalletPublicKey
};
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