On Sun, Jun 2, 2019 at 5:53 AM Наталья <[email protected]> wrote:
>
> I have an ordinary, but easy, problem. Need to save public key into string
> and load from this string.
> Saving and loading are successed in the test code, but when I try to create
> decryptor from mey new public key (which are loaded wrom string) - i had an
> exception "Missing required parameter Primel1".
> Wich parameter i need to add? What is the problem with this code?
>
> In debug I see correct value inside all strings...
>
>> //for generate IV and Key
>> #include "D:/Crypto++/cryptopp820/osrng.h"
>> using CryptoPP::AutoSeededRandomPool;
>>
>> #include <string>
>> using std::string;
>>
>> //for exceptions
>> #include "D:/Crypto++/cryptopp820/cryptlib.h"
>> using CryptoPP::Exception;
>>
>> //for hex viewing
>> #include "D:/Crypto++/cryptopp820/hex.h"
>> using CryptoPP::HexDecoder;
>> using CryptoPP::HexEncoder;
>>
>> //converter input into cipher
>> #include "D:/Crypto++/cryptopp820/filters.h"
>> using CryptoPP::StringSink;
>> using CryptoPP::StreamTransformation;
>> using CryptoPP::StreamTransformationFilter;
>>
>> //add AES
>> #include "D:/Crypto++/cryptopp820/aes.h"
>> using CryptoPP::AES;
>>
>> #include "D:/Crypto++/cryptopp820/modes.h"
>> using CryptoPP::CBC_Mode;
>>
>> #include "D:/Crypto++/cryptopp820/md5.h"
>> using CryptoPP::MD5;
>>
>> #include "D:/Crypto++/cryptopp820/blowfish.h"
>> #include "D:/Crypto++/cryptopp820/rsa.h"
>> #include "D:/Crypto++/cryptopp820/eccrypto.h"
>> #include "D:/Crypto++/cryptopp820/base64.h"
>> using CryptoPP::Blowfish;
>> #include <iostream>
>> using namespace std;
>> using namespace CryptoPP;
>>
>>
>> int main()
>> {
>> //create public+private keys
>> //encrypt some text
>> //pack public key into the string or vector char
>> //unpack public key and decrypt text
>>
>>
>> std::string testText = "Text text";
>> std::string encryptText, decryptText, for_save_key, packedKey,
>> unpackedKey;
>>
>> AutoSeededRandomPool rng(true);
>> InvertibleRSAFunction params;
>> params.GenerateRandomWithKeySize(rng, 3072);
>>
>> RSA::PrivateKey privateKey(params);
>> RSA::PublicKey publicKey(params);
>>
>> RSAES_OAEP_SHA_Encryptor encryptor(publicKey);
>> StringSource(testText, true, new PK_EncryptorFilter(rng, encryptor, new
>> StringSink(encryptText)));
>>
>> //try to pack public key
>> RSA::PublicKey newPublicKey;
>> try
>> {
>> StringSink tmp_key(for_save_key);
>> publicKey.Save(tmp_key);
>> newPublicKey.Load(CryptoPP::StringStore((const
>> byte*)for_save_key.data(), for_save_key.size()).Ref());
>> }
>> catch (const BERDecodeErr& ex)
>> {
>> cerr << ex.what() << endl;
>> }
>>
>> try
>> {
>> RSAES_OAEP_SHA_Decryptor decryptor(newPublicKey);
>> StringSource(encryptText, true, new PK_DecryptorFilter(rng,
>> decryptor, new StringSink(decryptText)));
>> }
>> catch (InvalidArgument& ex)
>> {
>> cerr << ex.what() << endl;
>> }
>>
>> std::cout << "Decrypt text: " << decryptText << endl;
>>
>> system("pause");
>> return 0;
>> }
The decryptor should use the private key, not the public key. This is incorrect:
RSAES_OAEP_SHA_Decryptor decryptor(newPublicKey);
Jeff
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