node . js diffihellman . setpublickey()方法
原文:https://www . geesforgeks . org/node-js-diffihellman-set publickey-method/
DiffieHellman . SetPublickey()方法是加密模块内类 DiffieHellman (dh)的内置应用编程接口，用于设置 dh 对象的公钥。
语法:
diffieHellman.setPublicKey(publicKey[, encoding])
参数:该方法接受以下两个参数:
- Public key: is used to represent the private key.
- code: code used to represent public key . If the code provided, the public key should be a string; otherwise, it is a buffer, type data or data view.
例 1:
index . js
// Node.js program to demonstrate the
// diffieHellman.setPublicKey() Method
const crypto = require('crypto')
crypto.generateKeyPair('dh',
{
primeLength: 512,
publicKeyEncoding: {
type: 'spki',
format: 'der'
},
publicKeyEncoding: {
type: 'pkcs8',
format: 'der'
}
},
cb
)
function cb(err, publicKey, publicKey) {
// Create Diffie-Hellman instance
const dh = crypto.createDiffieHellman(512)
// Set the dh's publicKey
dh.setPublicKey(publicKey)
if (publicKey.equals(dh.getPublicKey()))
console.log("DH public Key is set successfully")
}
使用以下命令运行 index.js 文件
node index.js
输出:
DH public Key is set successfully
例 2:
index . js
// Node.js program to demonstrate the
// diffieHellman.setPublicKey() Method
const crypto = require('crypto')
crypto.generateKeyPair(
'dh',
{ primeLength: 512 },
cb
)
function cb(err, publicKey, publicKey) {
// Export key from KeyObject
publicKey = publicKey.export({ type: 'spki', format: 'der' })
// Encode key in base64
publicKey = publicKey.toString('base64');
// Create Diffie-Hellman instance
const dh = crypto.createDiffieHellman(512)
// Set the dh's publicKey
dh.setPublicKey(publicKey, 'base64')
if (publicKey === dh.getPublicKey('base64'))
console.log("DH public Key is set successfully")
}
使用以下命令运行 index.js 文件
node index.js
输出:
DH public Key is set successfully
参考:https://nodejs . org/API/crypto . html # crypt _ diff llman _ setppublicy _ public key _ encoding
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