RSA Encryption and Decryptionbb
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The document provides an example of RSA encryption and decryption in C++ using the OpenSSL library. It demonstrates generating an RSA key pair, encrypting a QString, and then decrypting it back to QString. The code includes necessary functions and compilation instructions, emphasizing secure practices in cryptography.
Tags
Cryptography
C++ Programming
OpenSSL Library
Last edited time
Jan 20, 2024 01:42 AM
Here's an example of how you might use RSA encryption and decryption with QStrings in C++. This example uses the OpenSSL library.
Please note that to compile this code you will need to link against the OpenSSL library using
-lssl -lcrypto flags with g++. The exact command may vary depending on your system configuration. Here's an example:This command compiles the file
rsa_example.cpp into an executable named rsa_example and links against the OpenSSL library.In this example, an RSA key pair is generated and used to encrypt and decrypt a QString. The QString is converted to a
std::string using the QString::toStdString method, then cast to a char* for use with the OpenSSL functions. After the decryption, the decrypted text is converted back to a QString using QString::fromStdString.This example code is for demonstration purposes only. Always use secure practices when dealing with cryptography in your code.
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