Unverified50% confidenceFactExact time
数字签名工程实现中通常先计算消息的密码学哈希（如 SHA-256）再对哈希值签名，因为非对称加密运算开销远大于哈希运算
1
Sources
50%
Confidence
Long-term
Relevance
8/6/2026
First Seen
Sources
Related Claims
UnverifiedCommon signing algorithms include HMAC-SHA256, MD5 digest, and AES encryption.73% similarUnverifiedk-匿名（k-anonymity）技术将用户密码进行 SHA-1 哈希后仅发送哈希值前 5 个字符到服务端进行前缀匹配，客户端在本地完成完整比对，从而不暴露实际密码或完整哈希73% similarUnverifiedSHA-1 (Secure Hash Algorithm 1) was designed by the U.S. National Security Agency and outputs a fixed 160-bit (40 hexadecimal characters) hash value for input data of arbitrary length.69% similarUnverifiedModern best practices for password storage use adaptive hashing algorithms such as BCrypt, SCrypt, or Argon2, which have built-in salting and adjustable computational cost.67% similar
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