What is a hash function?

A hash function takes input data and produces a fixed-size string of characters (hash). The same input always produces the same hash, but you cannot reverse a hash back to the original data.

Which hash algorithm should I use?

SHA-256 is recommended for most purposes. SHA-512 offers more security. MD5 and SHA-1 are considered weak for security but are still used for checksums.

Yes. All hash computation happens in your browser using the Web Crypto API. No data is sent to any server.

哈希生成器

根据任意文本生成 SHA-1、SHA-256、SHA-384、SHA-512 哈希值。所有计算均在浏览器中完成。

输入文本

大写

关于哈希函数

加密哈希函数从输入数据生成固定长度的哈希值。广泛用于数据完整性验证、密码存储、数字签名等。SHA-256 是目前最常用的算法。

使用方法

Enter or paste your text in the input field
Click 'Generate Hashes' to compute all hash values
Toggle 'Uppercase' for uppercase hex output
Copy any hash value with the copy button

使用场景

Verifying file integrity with checksums
Password hashing for storage
Data deduplication
Digital signatures and certificates

哈希生成器

关于哈希函数

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