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如何验证公钥属于私钥？

[英]How to verify that a public key belongs to private key?

原文 2013-09-19 12:26:03 3 1 php/ openssl

I am using PHP 5.3 with openssl to successfully generate a pair of public key and private key. 我将PHP 5.3与openssl一起使用以成功生成一对公共密钥和私有密钥。

Lets say someone passes me a public key only. 可以说有人仅向我传递了一个公共密钥。

How can I verify that this public key belongs to a private key that I have? 如何验证此公钥属于我拥有的私钥？ (only by having the public key and a private key, no additional data) （仅具有公共密钥和私有密钥，没有其他数据）

1 个解决方案

Encrypt a message with the public key and see if you can decrypt it with the private key. 使用公钥加密消息，然后查看是否可以使用私钥解密消息。

Alternatively, you could just extract the public key from your private key file and compare it to the public key that someone passed to you. 或者，您可以只从私钥文件中提取公钥，然后将其与某人传递给您的公钥进行比较。 Keys are generated in pairs, so for a given private key, the public key will always be the same. 密钥是成对生成的，因此对于给定的私钥，公钥将始终相同。

这个公钥==私钥如何 - How is this public key == private key

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相关问题 这个公钥==私钥如何 - How is this public key == private key 通过 PHP 中发送方和接收方之间的公钥验证私钥的签名 - Verify signature of Private key by Public key between Sender and Receiver in PHP 如何在 PHP 中使用 p8 形式的私钥对数据进行数字签名并使用公钥对其进行验证 - How to digitally Sign data using p8 form private key in PHP and Verify it using Public key 如何为API生成公钥和私钥 - How to generate public and private key for API 如何通过私钥进行签名并在php中通过公钥进行检查 - how make signature by private key and check it by public key in php 基于公钥/私钥的许可 - Public/Private Key Based Licensing 如何通过CA的公钥验证数字证书 - How to verify digital certificate by CA's public key PHP Captcha：什么是“私钥”和“公钥”？ - PHP Captcha: What is a “private key” and “public key”? 从比特币私钥中搜索公钥 - Retrive Public key from a Bitcoin Private Key 如何使用公钥/私钥 RSA 密钥签署一些数据？ - How to sign some data using public/private RSA key?

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