编码与加密
HMAC 生成器
免费的 HMAC 生成器。使用 SHA-1, 256, 384 或 512 和任何密钥创建 HMAC 签名。支持十六进制和 Base64 输出。适用于 webhook 签名、API 认证。
Runs in your browser
Input
Output
Hex
Base64
编辑注
Understanding · A signature, with a shared secret.
本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。
常见问题
Quick answers.
›What is HMAC?
Hash-based Message Authentication Code — a way to verify a message hasn't been tampered with using a shared secret. Common in webhook signing.
›Is HMAC encryption?
No — HMAC is authentication. The message itself is in cleartext; HMAC just lets the receiver verify it came from someone with the same secret.
›Which algorithm should I use?
HMAC-SHA256 is the modern default. HMAC-SHA1 is still common in older systems but should be avoided for new work.
›Is my secret sent to a server?
No — generation runs entirely in your browser via the Web Crypto API.
›Is the generator free?
Yes — fully free, no signup.
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