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(Unicode C) Duplicate PHP RSA EncryptionDemonstrates how to duplicate the following PHP function.
#include <C_CkBinDataW.h> #include <C_CkXmlW.h> #include <C_CkPublicKeyW.h> #include <C_CkRsaW.h> void ChilkatSample(void) { const wchar_t *rsaMOD; const wchar_t *rsaEXP; HCkBinDataW bdMod; HCkBinDataW bdExp; BOOL success; HCkXmlW xml; HCkPublicKeyW pubkey; HCkRsaW rsa; const wchar_t *plainText; const wchar_t *cipherText; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Duplicate the following PHP code: // // public function encryptRSA($plainText,$rsaMOD,$pubKEY){ // $rsa = new RSA(); // $rsa->setEncryptionMode(RSA::ENCRYPTION_PKCS1); // $publicKey = [ // 'e' => new BigInteger($pubKEY,16), // 'n' => new BigInteger($rsaMOD,16) // ]; // // $rsa->loadKey($publicKey); // $ciphertext = $rsa->encrypt($plainText); // return bin2hex($ciphertext); // } // // $plainText="key=abcdefghijkmnopq&iv=abcdefghijkmnopq&h=12345678&s=12345678" // $rsaMOD="F0946D8F05604809E24B8CFFD30349CEA9E5F4D320BFD9E9AA1B088863F02C43E7997D37A3E27B4F8F359F1744DB6B20A437067C0D325A80660D12FF56A57673" // $pubKEY="010001" // We have the RSA modulus in hex rsaMOD = L"F0946D8F05604809E24B8CFFD30349CEA9E5F4D320BFD9E9AA1B088863F02C43E7997D37A3E27B4F8F359F1744DB6B20A437067C0D325A80660D12FF56A57673"; // The RSA exponent in hex is "010001", which is 65537 in decimal. It's typically the exponent that is always used. rsaEXP = L"010001"; // Get the RSA modulus and exponent in base64. bdMod = CkBinDataW_Create(); bdExp = CkBinDataW_Create(); success = CkBinDataW_AppendEncoded(bdMod,rsaMOD,L"hex"); success = CkBinDataW_AppendEncoded(bdExp,rsaEXP,L"hex"); // Build the XML representation of the RSA public key xml = CkXmlW_Create(); CkXmlW_putTag(xml,L"RSAPublicKey"); CkXmlW_UpdateChildContent(xml,L"Modulus",CkBinDataW_getEncoded(bdMod,L"base64")); CkXmlW_UpdateChildContent(xml,L"Exponent",CkBinDataW_getEncoded(bdExp,L"base64")); // Load the RSA public key into a Chilkat public key object. pubkey = CkPublicKeyW_Create(); success = CkPublicKeyW_LoadFromString(pubkey,CkXmlW_getXml(xml)); // Setup the RSA object for encryption and do it.. rsa = CkRsaW_Create(); CkRsaW_putVerboseLogging(rsa,TRUE); success = CkRsaW_ImportPublicKeyObj(rsa,pubkey); // Use PKCSv1.5 padding CkRsaW_putOaepPadding(rsa,FALSE); // Encrypt and return the string as hex. CkRsaW_putEncodingMode(rsa,L"hex"); plainText = L"key=abcdefghijkmnopq&iv=abcdefghijkmnopq&h=12345678&s=12345678"; cipherText = CkRsaW_encryptStringENC(rsa,plainText,FALSE); if (CkRsaW_getLastMethodSuccess(rsa) == FALSE) { wprintf(L"%s\n",CkRsaW_lastErrorText(rsa)); CkBinDataW_Dispose(bdMod); CkBinDataW_Dispose(bdExp); CkXmlW_Dispose(xml); CkPublicKeyW_Dispose(pubkey); CkRsaW_Dispose(rsa); return; } // Note: The PKCSv1_5 padding incorporates random bytes. Therefore, the RSA encryption will produce different results each time -- all of which are valid // and decrypt correctly to the same original text. wprintf(L"%s\n",cipherText); CkBinDataW_Dispose(bdMod); CkBinDataW_Dispose(bdExp); CkXmlW_Dispose(xml); CkPublicKeyW_Dispose(pubkey); CkRsaW_Dispose(rsa); } |
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