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哈希生成器

从任意文本生成 SHA-1、SHA-256、SHA-384、SHA-512 哈希。均在浏览器中计算。免费使用，无需注册。

About Hash Functions

Cryptographic hash functions generate a fixed-size hash value from input data. They're used for data integrity verification, password storage, digital signatures, and more. SHA-256 is the most commonly used algorithm today.

常见问题

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使用方法

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

常见用途

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

常见问题

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