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• [FILE] hash.ts

Просмотр файла: hash.ts

import blake2b from '@bitgo/blake2b';

/**
 * Generates a Blake2b hash of typed data as a base64 string.
 *
 * @param typeTag type tag (e.g. TransactionData, SenderSignedData)
 * @param data data to hash
 */
export function hashTypedData(typeTag: string, data: Uint8Array): Uint8Array {
  const typeTagBytes = Array.from(`${typeTag}::`).map((e) => e.charCodeAt(0));

  const dataWithTag = new Uint8Array(typeTagBytes.length + data.length);
  dataWithTag.set(typeTagBytes);
  dataWithTag.set(data, typeTagBytes.length);

  return blake2b(32).update(dataWithTag).digest('binary');
}

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