Hash Generator (MD5 / SHA)|哈希值生成工具

Hash Generator (MD5 / SHA)|哈希值生成工具

哈希值生成工具 Hash Generator (MD5 / SHA)

输入文本内容并选择哈希算法,生成对应的 MD5 或 SHA 哈希值,可用于校验文件完整性或简单签名等场景。
Enter text and choose a hash algorithm to generate MD5 or SHA hashes, useful for integrity checks or simple signatures.

1. 输入文本与选项 · Input Text & Options
本工具在浏览器本地使用 JavaScript 计算哈希,不会将内容发送到服务器。
This tool computes hashes locally in your browser using JavaScript; your text is never sent to a server.

适合:简单口令校验、字符串签名、接口调试、快速对照等日常开发场景。
Suitable for: quick checksum, simple signatures, API debugging and everyday development use.
MD5:仍广泛用于非安全场景的指纹标识(如文件校验),但已不适合密码存储等安全用途。
MD5: still common for non-security fingerprints (e.g. file checksums), but not safe for passwords.
SHA-256 / 384 / 512:更现代的哈希算法,适合安全性要求更高的场景。
SHA-256 / 384 / 512: more modern hash algorithms, better for higher security requirements.
一般开发调试和文件校验多使用十六进制;部分接口或 Token 可能需要 Base64 表示。
Hex is commonly used for debugging and checksums; some APIs or tokens may require Base64 encoding.
3. 哈希函数小结 · Notes on Hash Functions
  • 单向性 · One-way property: 哈希函数很容易从原文算出哈希值,但几乎无法从哈希值反推出原文(理论上)。
    It is easy to compute a hash from the input, but practically impossible to recover the original input from the hash.
  • 抗碰撞性(有限)· Collision resistance (limited): 不同输入理想状态应产生不同哈希,但像 MD5、SHA-1 已被实证存在碰撞,不适合作为强安全算法。
    Ideally, different inputs produce different hashes, but MD5 and SHA-1 are known to have practical collisions and are not suited for strong security.
  • 安全用途建议 · Security recommendations: 密码存储、强认证等场景不应直接使用 MD5 / SHA-1 / 单轮 SHA-256;应使用如 bcrypt、scrypt、Argon2 等专门密码学函数。
    For password storage or strong authentication, do not use plain MD5/SHA; use dedicated password hashing schemes such as bcrypt, scrypt, or Argon2 instead.
  • 开发调试用途 · Development & debugging: 对于接口签名、简单校验、文件一致性检查等非高安全场景,本工具的哈希结果可以直接使用。
    For API signing, simple checksums, or file integrity checks where security is not critical, the hashes from this tool can be used directly.

说明:本工具仅做演示与日常开发使用,不对任何安全强度做出保证。请在涉及重要数据与安全的业务中咨询专业安全工程师。
Note: This tool is for demonstration and everyday development only and does not guarantee cryptographic strength. For sensitive data and security-critical systems, consult a professional security engineer.