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黑人夏川

botan加解密库使用

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botan

一、RSA

1.公钥加密

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#include <botan/auto_rng.h>
#include <botan/data_src.h>
#include <botan/pubkey.h>
#include <botan/x509_key.h>

bool encryptByRSA(const QString &paramDataSource, QByteArray &paramDataDest, const QString &pubKey)
{
    try {
        Botan::AutoSeeded_RNG rng;
        Botan::DataSource_Memory pem(pubKey.toStdString());
        std::unique_ptr<Botan::X509_PublicKey> temp_pub(Botan::X509::load_key(pem));
        //X509_PublicKey* temp_pub = X509::load_key(paramPubKeyPath.toStdString());
        Botan::PK_Encryptor_EME enc(*temp_pub, rng, "EME-PKCS1-v1_5");
        std::vector<uint8_t> en = enc.encrypt((unsigned char *) paramDataSource.toUtf8().data(),
                                              paramDataSource.toUtf8().size(),
                                              rng);
        paramDataDest = QByteArray::fromRawData((char *) &en[0], en.size()).toBase64();
        return true;
    } catch (std::runtime_error &e) {
        qWarning() << e.what();
        return false;
    }
}