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(Unicode C++) RSA Encrypt with Modulus and ExponentDemonstrates how to RSA encrypt with a given modulus and exponent. Note: This example requires Chilkat v11.0.0 or greater.
#include <CkRsaW.h> #include <CkXmlW.h> #include <CkPublicKeyW.h> void ChilkatSample(void) { bool success = false; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkRsaW rsa; // Assuming you already have a base64 modulus and exponent, // wrap it in XML like this: const wchar_t *modulus = L"qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM="; const wchar_t *exponent = L"AQAB"; CkXmlW xml; xml.put_Tag(L"RSAPublicKey"); xml.NewChild2(L"Modulus",modulus); xml.NewChild2(L"Exponent",exponent); CkPublicKeyW pubKey; success = pubKey.LoadFromString(xml); if (success == false) { wprintf(L"%s\n",pubKey.lastErrorText()); return; } success = rsa.UsePublicKey(pubKey); if (success == false) { wprintf(L"%s\n",rsa.lastErrorText()); return; } bool usePrivateKey = false; const wchar_t *plainText = L"message in a bottle"; rsa.put_EncodingMode(L"base64"); const wchar_t *encryptedStrBase64 = rsa.encryptStringENC(plainText,usePrivateKey); wprintf(L"%s\n",encryptedStrBase64); } |
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