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PHP Captcha：什么是“私钥”和“公钥”？

[英]PHP Captcha: What is a “private key” and “public key”?

原文 2010-05-19 06:44:49 5 2 php/ captcha

私钥和公钥之间有什么区别，如何使用？

2 个解决方案

Public-key cryptography You create a key-pair (public and private) the receivers public key is used to encrypt messages. 公共密钥加密您可以创建一个密钥对（公共和私有），接收者的公共密钥用于加密消息。 The private key of the receiver is used to decrypt the this message. 接收者的私钥用于解密此消息。

Normally private and public key are terms that belong to assymetric encryption algorithms. 通常，私钥和公钥是属于非对称加密算法的术语。 I don't see a connection to CAPTCHA or PHP5 in this special case. 在这种特殊情况下，我看不到与CAPTCHA或PHP5的连接。

公私钥加密-PHP和C＃ - Public Private Key Crypto - PHP & C#

PHP中的公钥/私钥相似系统 - Public/private key alike system in PHP

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

PHP：从私钥字符串/文件获取RSA公钥 - PHP: Get RSA public key from private key string/file

phpseclib / jsbn：使用PHP中的公钥加密，使用jsbn中的私钥解密 - phpseclib/jsbn: encrypt with public key in PHP, decrypt with private key in jsbn

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

PHP：使用公钥加密文件并使用私钥解密 - PHP: Encrypt a file using public key and decrypt using 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

使用PHP生成公钥/私钥对并将公钥导出为.der编码的字符串 - Use PHP to generate a public/private key pair and export public key as a .der encoded string

如何使用公钥和私钥保护小型php API - How to secure a small php api with public and private key

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相关问题 公私钥加密-PHP和C＃ - Public Private Key Crypto - PHP & C# PHP中的公钥/私钥相似系统 - Public/private key alike system in PHP 这个公钥==私钥如何 - How is this public key == private key PHP：从私钥字符串/文件获取RSA公钥 - PHP: Get RSA public key from private key string/file phpseclib / jsbn：使用PHP中的公钥加密，使用jsbn中的私钥解密 - phpseclib/jsbn: encrypt with public key in PHP, decrypt with private key in jsbn 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 PHP：使用公钥加密文件并使用私钥解密 - PHP: Encrypt a file using public key and decrypt using 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 使用PHP生成公钥/私钥对并将公钥导出为.der编码的字符串 - Use PHP to generate a public/private key pair and export public key as a .der encoded string 如何使用公钥和私钥保护小型php API - How to secure a small php api with public and private key

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