本文对文本型的电子文件保护技术进行了探讨,提出了简单而有效的文档保护算法,其保护重点在于其一致性和完整性,算法的基础是基于哈夫曼树的二进制编码,通过对原始电子文件的二进制压缩编码形成了以压缩文件为中心的,包括原始文档、压缩文件,数字指纹三为一体的文档保护机制,从而保证了文档的一致性与完整性。 This paper discusses the text-based electronic file protection technology, puts forward a simple and effective document protection algorithm, the protection of which focuses on its consistency and completeness. The algorithm is based on the Binary Huffman tree coding, The binary compression encoding of electronic documents forms a document protection mechanism that takes the compressed files as the center and includes the original documents, compressed files and digital fingerprints, so as to ensure the consistency and completeness of the documents.