OpenSSL RSA encryption and decryption algorithm

I found a lot of RSA algorithm codes on the Internet that were incomplete or problematic, so I had to write them myself.
In fact, it is very simple. The two functions PEM_read_bio_RSA_PUBKEY and PEM_read_bio_RSAPrivateKey read the public key and private key from the memory respectively, which can be generated in advance with openssl tools or online tools. But be careful not to write any wrong characters and add a newline every 64 characters, otherwise an error will be reported.
The C code is as follows:

#include "stdafx.h"
#include <windows.h>
#include <openssl/rsa.h>
#include <openssl/pem.h>

#pragma comment(lib,"libssl.lib")
#pragma comment(lib,"libcrypto.lib")

int main(void)
{
    
    
	char *in = "hello world";
	//BIO* bio = NULL;
	const char *pubKey = "-----BEGIN PUBLIC KEY-----\n\
		MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDpHxVLdv9g8PqGCYTe6Y6bv5tc\n\
		Lwwd5pBSZUWT9/iPArSYlOkQoYuhaYp2YkCIDfs6IQV2A4h2bMwrbRjF8Md7nbwx\n\
		Oy7w4xIsoC8XdyzOkjm78AhdcvFQQVevT+BBnMtvPrrkMTAfpJzt/zWNv1ufOpiy\n\
		v4AqyU6H24xFvyPfRQIDAQAB\
		\n----- END PUBLIC KEY-----\n";
	//此处大坑，END PUBLIC KEY前面的\n不能写在前一行的结尾，否则报错，不知道什么原因
	const char *priKey = "-----BEGIN RSA PRIVATE KEY-----\n\
		MIICXQIBAAKBgQDpHxVLdv9g8PqGCYTe6Y6bv5tcLwwd5pBSZUWT9/iPArSYlOkQ\n\
		oYuhaYp2YkCIDfs6IQV2A4h2bMwrbRjF8Md7nbwxOy7w4xIsoC8XdyzOkjm78Ahd\n\
		cvFQQVevT+BBnMtvPrrkMTAfpJzt/zWNv1ufOpiyv4AqyU6H24xFvyPfRQIDAQAB\n\
		AoGBAIeSVQ8DEDdvTTJgHM6KIy4+evpcPf6xlGLmlFUeE4YPu7k0eGn8mLhxKV35\n\
		e6/j+aNvir58BYNheEcU9iA/C7Ki/5rWX+ayrDUmHfV9hm0Lb3+2JLyTd6v4fwo4\n\
		pA/VEkED3OCgqFwlVeXa+VZ2Az/OnBrjm08HBrimq2h54DLhAkEA9Iea83K9XIca\n\
		fRSkLPmetoM+qgQT7VXYOpZznyytqeaf0Z3v7yDKeECBYo2H4B5Juw39dkKnvR1m\n\
		o1GKoF4RXQJBAPQOe7w7+cwENfS8biXvptd/arC5gOM+2NXh//xz0Xe7kyeswk0V\n\
		FWs3meJuC/Y9dnqec8/fMjN+dpaidWP3HwkCQQDzh539ONd4MCFkUstS82Nql3kw\n\
		L5F8+9K2PqJ18zQdkk62n5mWSMz8SBnTgerBfMinXz5/qdCOWpqeqpXqMuUNAkAG\n\
		53n8oz231c6o88Ox8wunQQWFplnNE/QSaOhS/fvJBVduYebFQ3ltpQ8HZtGTz71Q\n\
		Trc8BDZpWoSEUmg7wbvxAkAZRhiPNN1nV/Aja4D+/g5egtKzB6krSxhtREjp8pfL\n\
		m+h5JQKR79oj6OBX/ntdKV/RNxgCFyvnrQOCAlO7Q2vF\
		\n-----END RSA PRIVATE KEY-----\n";

	BIO* pubBio = BIO_new_mem_buf(pubKey, -1);
	RSA* pubRsa = PEM_read_bio_RSA_PUBKEY(pubBio, NULL, NULL, NULL);
	char *en[512] = {
    
     0 };
	RSA_public_encrypt(strlen(in), (unsigned char*)in, (unsigned char*)en, pubRsa, RSA_PKCS1_PADDING);
	printf("加密:%s\n", en);

	BIO* priBIO = BIO_new_mem_buf(priKey, -1);
	RSA* priRsa = PEM_read_bio_RSAPrivateKey(priBIO, NULL, NULL, NULL);
	char de[512] = {
    
     0 };
	RSA_private_decrypt(RSA_size(priRsa), (unsigned char*)en, (unsigned char*)de, priRsa, RSA_PKCS1_PADDING);
	printf("解密:%s", de);

	RSA_free(pubRsa);
	RSA_free(priRsa);

	getchar();
	return 0;
}