基于PUBLICKEYBLOB/PRIVATEKEYBLOB[已关闭]生成会话密钥

我的代码看起来是这样的,我在这里跟踪了每个未定义的方法,找到了包含相关参数的调用函数。

我很难理解API。所以我在这里可以生成公钥/私钥,并且可以生成 一 会话密钥,但如何基于公钥生成会话密钥? 我在这里遗漏了什么/假设(错了)?

void Crypto::GenerateKeyPair( Buffer& publicKey, Buffer& privateKey ) throw(WinError)
{
    /* CryptAcquireContext ( PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) */
    CryptContext context = CryptoProviders::NewContext(PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
    /* CryptGenKey( AT_KEYEXCHANGE, CRYPT_EXPORTABLE, &key) */
    CryptKey key = context.GenerateKeyExchangePair(); 
    /* CryptExportKey( PUBLICKEYBLOB, pPub); */
    key.ExportPublicKey(publicKey);
    /* CryptExportKey( PRIVATEKEYBLOB, pPriv); */
    key.ExportPrivateKey(privateKey);
}


void Crypto::GenerateSessionKey( Buffer& sessionKey ) throw(WinError)
{
    /* CryptAcquireContext ( PROV_RSA_FULL, 0 ) */
    CryptContext context = CryptoProviders::NewContext(PROV_RSA_FULL, 0);
    /* CryptGenKey( CALG_RC4, CRYPT_EXPORTABLE ) */
    /* CryptGetUserKey( AT_KEYEXCHANGE ) */
    /* CryptExportKey( SIMPLEBLOB ) */
    context.GenerateSessionKey(sessionKey);
}

void Crypto::EncryptData( const Buffer& publicKey, const Buffer& plaintext, Buffer& encrypted )
{
    /* CryptAcquireContext ( PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) */
    CryptContext hProvider(PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
    /* CryptImportKey( 0 ) */
    CryptKey key = hProvider.ImportKey(publicKey);
    /* CryptEncrypt() */
    key.Encrypt(plaintext, encrypted);

}

void Crypto::DecryptData( const Buffer& privateKey, const Buffer& encrypted, Buffer& plaintext )
{
    /* CryptAcquireContext ( PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) */
    CryptContext hProvider(PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
    /* CryptImportKey( 0 ) */
    CryptKey key = hProvider.ImportKey(privateKey);
    /* CryptDecrypt() */
    key.Decrypt(encrypted, plaintext);
}