> I have difficulties with loading private key into Crypto++ wich is
> mentioned in
> https://developers.google.com/android-pay/integration/gateway-processor-integration#using-openssl-to-generate-and-format-a-key
>
> private static final String MERCHANT_PRIVATE_KEY_PKCS8_BASE64 =
> "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgCPSuFr4iSIaQprjj" +
> "chHPyDu2NXFe0vDBoTpPkYaK9dehRANCAATnaFz/vQKuO90pxsINyVNWojabHfbx" +
> "9qIJ6uD7Q7ZSxmtyo/Ez3/o2kDT8g0pIdyVIYktCsq65VoQIDWSh2Bdm";
>
> My bad... I missed that you were already using the PEM Pack.
Try this, it works for me:
#include <iostream>
#include <string>
using namespace std;
#include "files.h"
#include "filters.h"
#include "base64.h"
#include "osrng.h"
#include "eccrypto.h"
using namespace CryptoPP;
string encoded =
"MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgCPSuFr4iSIaQprjj"
"chHPyDu2NXFe0vDBoTpPkYaK9dehRANCAATnaFz/vQKuO90pxsINyVNWojabHfbx"
"9qIJ6uD7Q7ZSxmtyo/Ez3/o2kDT8g0pIdyVIYktCsq65VoQIDWSh2Bdm";
int main(int argc, char* argv[])
{
try
{
string decoded;
StringSource ss1(encoded.c_str(), true, new Base64Decoder(new
StringSink(decoded)));
StringSource ss2((const byte*)decoded.data(), decoded.size(), true,
new FileSink("key.der"));
DL_PrivateKey_EC<ECP> key;
key.Load(StringStore((const byte*)decoded.data(),
decoded.size()).Ref());
AutoSeededRandomPool prng;
key.ThrowIfInvalid(prng, 3);
cout << "Private key appears to be valid" << endl;
}
catch(Exception& ex)
{
cerr << ex.what() << endl;
return 1;
}
return 0;
}
And:
$ g++ -DNDEBUG -g2 -O2 -I . test.cxx -o test.exe ./libcryptopp.a
$ ./test.exe
Private key appears to be valid
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