Node.js x509.verify()用法及代码示例

x509.verify() 是加密模块中 X509Certificate 类的内置应用程序编程接口，用于检查证书是否由给定的公钥签名。

用法:

const x509.verify(publicKey)

参数：该函数将公钥对象作为参数。

返回值：当且仅当证书由给定的公钥签名时，此函数才返回布尔值 true。

如何生成公共证书？

公用证书：打开记事本并使用copy-paste和以下 key 并将文件另存为public-cert.pem

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

范例1：

文件名：index.js

// Node.js program to demonstrate the 
// x509.verify() function
// Importing crypto module
const {X509Certificate} = require('crypto')
// Importing fs module
const fs = require('fs')
// getting object of a PEM encoded X509 Certificate.
const x509 = new X509Certificate(fs.readFileSync('public-cert.pem'));
// checking if this certificate is signed by the given public key or not
// by using x509.verify() function
const value = x509.verify(x509.publicKey)
// display the result
if(value)
console.log("certificate is signed by the given public key")
else
console.log("certificate is not signed by the given public key")

使用以下命令运行index.js文件。

node index.js

输出：

certificate is signed by the given public key

范例2：

文件名：index.js

// Node.js program to demonstrate the 
// x509.verify() function
// Importing crypto module
const {X509Certificate} = require('crypto')
// Importing fs module
const fs = require('fs')
// display the result
if((new X509Certificate(fs.readFileSync('public-cert.pem')))
    .verify((new X509Certificate(fs.readFileSync('public-cert.pem'))).publicKey))
console.log("certificate is signed by the given public key")
else
console.log("certificate is not signed by the given public key")

使用以下命令运行index.js文件。

node index.js

输出：

certificate is signed by the given public key

参考：https://nodejs.org/dist/latest-v15.x/docs/api/crypto.html#crypto_x509_publickey