javascript - 如何在 node.js 中获取字符串的 sha1 哈希？

Question

我正在尝试创建一个用 node.js 编写的 websocket 服务器

要让服务器正常工作，我需要获取字符串的 SHA1 哈希值。

Section 5.2.2 page 35 of the docs 中解释了我必须做的事情。 .

NOTE: As an example, if the value of the "Sec-WebSocket-Key"header in the client's handshake were "dGhlIHNhbXBsZSBub25jZQ==", the server would append thestring "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" to form thestring "dGhlIHNhbXBsZSBub25jZQ==258EAFA5-E914-47DA-95CA-C5AB0DC85B11". The server would then take the SHA-1 hash of this string, giving the value 0xb3 0x7a 0x4f 0x2c 0xc0 0x62 0x4f 0x16 0x90 0xf6 0x46 0x06 0xcf 0x38 0x59 0x45 0xb2 0xbe 0xc4 0xea. This value is then base64-encoded, to give the value "s3pPLMBiTxaQ9kYGzzhZRbK+xOo=", which would be returnedin the "Sec-WebSocket-Accept" header.

Answer 1

见 crypto.createHash() function和相关的hash.update()和 hash.digest()功能:

var crypto = require('crypto')
var shasum = crypto.createHash('sha1')
shasum.update('foo')
shasum.digest('hex') // => "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"