SHA1+RSA - 帮助在C++中使用 Botan

我正在为阿根廷的"电子发票"开发一个C++WebService客户端。Web服务客户端和xml处理不是问题，但加密部分令人头疼(我对这个主题很陌生)。

我正在阅读 Botan 文档，并发现了一个与我需要的示例有些相似的示例，但我在适应它时遇到了困难。

我需要使用证书加密 SHA1+RSA 中的 XML，并在 Base64 中对结果进行编码。

不幸的是，官方文档提供了多种语言的示例C++不是其中之一，我使用 php 示例作为起点来创建我的 PoC 代码C++。

确切的问题是这个。

我有这个 XML 示例：

<loginTicketRequest version="1.0"><header><uniqueId>1560949868</uniqueId><generationTime>2019-06-19T10:10:08-03:00</generationTime><expirationTime>2019-06-19T10:12:08-03:00</expirationTime></header><service>wsfe</service></loginTicketRequest>

这个 XML 变成了这个 Base64 字符串
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使用此 PHP 函数

$STATUS=openssl_pkcs7_sign("TRA.xml", "TRA.tmp", "file://".CERT,
array("file://".PRIVATEKEY, PASSPHRASE),
array(),
!PKCS7_DETACHED
);

其中CERT和PRIVATEKEY是公钥和私钥，PASSPHRASE是空字符串，文件 TRA.xml 包含上面提供的 XML 示例。

您可以从此链接下载公钥和私钥 示例证书

C++中的牡丹示例

#include <botan/pkcs8.h>
#include <botan/hex.h>
#include <botan/pk_keys.h>
#include <botan/pubkey.h>
#include <botan/auto_rng.h>
#include <botan/rng.h>
#include <iostream>
int main (intargc,char*argv[])
{
if(argc!=2)
return1;
std::string plaintext("Your great-grandfather gave this watch to your granddad for good luck. Unfortunately, Dane's luck wasn't as good as his old man's.");
std::vector<uint8_t> pt(plaintext.data(),plaintext.data()+plaintext.length());
std::unique_ptr<Botan::RandomNumberGenerator> rng(newBotan::AutoSeeded_RNG);
//load keypair
std::unique_ptr<Botan::Private_Key> kp(Botan::PKCS8::load_key(argv[1],*rng.get()));
//encrypt with pk
Botan::PK_Encryptor_EME enc(*kp,*rng.get(), "EME1(SHA-256)");
std::vector<uint8_t> ct = enc.encrypt(pt,*rng.get());
//decrypt with sk
Botan::PK_Decryptor_EME dec(*kp,*rng.get(), "EME1(SHA-256)");
std::cout << std::endl << "enc: " << Botan::hex_encode(ct) << std::endl << "dec: "<< Botan::hex_encode(dec.decrypt(ct));
return 0; //Edited :D, Thanks jww
}

我需要使用证书加密 SHA1+RSA 中的 XML，并在 Base64 中对结果进行编码。任何帮助将不胜感激。