How to Use This Tool 使用说明

1. Enter any text or string into the input field.
2. The tool instantly generates MD5, SHA-1, SHA-256, and SHA-512 hashes.
3. Click the copy button next to any hash to copy it to your clipboard.
4. All hashing is computed locally using the Web Crypto API (SHA) and a pure JS implementation (MD5).
5. Use this tool to verify file checksums, generate password hashes for testing, or compare hash values.

1. 在输入框中输入任意文本或字符串。
2. 工具即时生成 MD5、SHA-1、SHA-256 和 SHA-512 哈希值。
3. 点击任意哈希值旁边的复制按钮即可复制到剪贴板。
4. 所有哈希计算在本地完成，SHA 系列使用 Web Crypto API，MD5 使用纯 JS 实现。
5. 可用于验证文件校验和、生成测试用密码哈希、或比较哈希值。

Frequently Asked Questions 常见问题

• What is a hash? — A hash is a fixed-length string generated from input data using a mathematical algorithm. Even a small change in input produces a completely different hash. Hashes are used for data integrity verification, password storage, and digital signatures.
• Which hash algorithm should I use? — For security-sensitive applications, use SHA-256 or SHA-512. MD5 and SHA-1 are considered cryptographically broken and should only be used for non-security purposes like checksums.
• Is this safe for generating real passwords? — No. For real password hashing, use specialized algorithms like bcrypt, Argon2, or PBKDF2 with salt. This tool is for quick lookups and testing only.
• Can I hash a file? — Currently this tool only hashes text input. To hash a file, you would need to read the file contents and feed them to the hash function. We may add file hashing support in the future.

• 什么是哈希？ — 哈希是通过数学算法从输入数据生成的固定长度字符串。即使输入微小变化也会产生完全不同的哈希值。用于数据完整性验证、密码存储和数字签名。
• 应该用哪种哈希算法？ — 安全敏感的应用请使用 SHA-256 或 SHA-512。MD5 和 SHA-1 已被认为不安全，仅适用于非安全场景如校验和。
• 可以用来生成真正的密码吗？ — 不建议。真正的密码哈希应使用 bcrypt、Argon2 或 PBKDF2 等专用算法并加盐。此工具仅供快速查询和测试使用。
• 可以对文件进行哈希吗？ — 目前此工具只支持文本哈希。如需文件哈希，需要读取文件内容再传入哈希函数。未来可能会添加文件哈希支持。