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/**
* (c) 2019 by Mega Limited, Wellsford, New Zealand
*
* This file is part of the MEGA SDK - Client Access Engine.
*
* Applications using the MEGA API must present a valid application key
* and comply with the the rules set forth in the Terms of Service.
*
* The MEGA SDK is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* @copyright Simplified (2-clause) BSD License.
*
* You should have received a copy of the license along with this
* program.
*/
#include "mega.h"
#include "gtest/gtest.h"
using namespace mega;
TEST(PayCrypter, allFeatures)
{
char BASE64_IV[] = "7XS3jX8CrWh6gpZIavQamA";
char BASE64_ENCKEY[] = "IcfMNKnMLJNJAH-XPMDShw";
char BASE64_HMACKEY[] = "rChwtATCap-CXO-KGxbEKZLL88lVfdZPZfZcdnMtj8o";
char KEYS[] = "IcfMNKnMLJNJAH-XPMDSh6wocLQEwmqfglzvihsWxCmSy_PJVX3WT2X2XHZzLY_K";
char CONTENT[] = "{\"first_name\": \"First\", \"last_name\": \"Last\","
" \"card_number\": \"4532646653175959\","
" \"expiry_date_month\": \"10\", \"expiry_date_year\": \"2020\","
" \"cv2\": \"123\", \"address1\": \"120 Albert St\","
" \"address2\": \"Auckland Central\", \"city\": \"Auckland\","
" \"province\": \"Auckland\", \"postal_code\": \"1010\","
" \"country_code\": \"NZ\"}";
char CIPHER_BYTES[] = "Btu6B6YxQV1oeMRij4Fn0Que9FfIE1LJyYdacVbNBM1bS-GZAtwQh5"
"ZTtsakK6v_mMZGiQ3egRFSTNHzQU0jVa0GYZJ087NhlKlGtVO6PvBKmTkxpcnZpy1im"
"S6uzKLccQU-IxKm1XnBF7gB7McbXDxb-j_s3-sjMJo_npDBOR3hUePGSyN-jmed7mvO"
"K_fNY8DHqodpdVk7vy2PL8_iAY2SefttWGCD8DwiyxXx42KAjUaRHiYJqgdkZheF_Rp"
"9l-KxgW8krDdkHsQu-nqeciezk5iA5OlylUmCfc57AKztBElyd4KIfz4B7kprmTeiiH"
"8lhTCq7xZ64GdABzwfQghkf-fM9NJUD9bHfbTYfnnDRSvDrdJtD1gRVrkxnHNNVKhd6"
"rtKToreM2bFhfUpcw";
char HMAC[] = "C7WRAdge50wzsAMqdM2_BVhntsP_OUYxaDMkPtRvewg";
//The same as the Javascript example
char SDK_PUBKEY[] = "CACmWnYy7M5dqH7shqrj4jERfhhCfzoU5uDycAof1o8JyHu_F47b0aAB9KhKsIVKv90"
"nbuea7wGuWsc0pxlrR5kKOnqMEcIQrLysFupSleqwilIgp5MUBvkPTdsn22Qc9Qldwm"
"p_cbBNVfTrUVFSifv0QjDnbl7t9sLF5GgFMfYhWqMxAr3D3072cQF9eTbDLCbPD7RrC"
"vUiTdqI1bT79e_187YSzCdjeVq_tZb5YnhLPHlgNQffmFJj41itSwpqrEYN8e5kIvsE"
"INpHiLtXIIBBnld6NZu55U37sHeYkn5PB6cMi3ZEm90uIB7MT5CyHYLaEbJ9RkzJNRc"
"xJAC2w4CnABEBAAE";
//From the Javascript example, disabling random padding (padding with 0)
char CRYPT_GORT_SAYS[] = "AQB4PLTVCTdrPFXPWWCWZA3LdkjsIQgr7Ug8WBqFQlGqDR0YX0heatGVudAEb3TBOwvuoYsbOwVLOya22pqDJP6E-RUYDxbYC0dA02K7TSs97A9ZqnxnL6jvjW95X3BuR8YjStQJyy-a3FyAhrjyT9TnLOfKuUwIMLHf1eZB8H4JlAJ8VEQq9-SlusubiQZGZpYMeu2SBFJN-HI-93PEw2U3k-K6h7YYdhM-kIJ4-d2LuPWfyvuyjhs5fncgDgqPGZhq_4XOmV5Xh76aoqx8SBrPsotFvxE_CxOydivXhBMRaN6b6iL7MhuQXXDbOjvVis9uV2HnWraCxHbFwmUxoD6K";
char CRYPT_KEYS_BYTES[] = "AQB1FZOZJiEviXTXeBEOjyM6F9odENY6q4wzt73X0vVCbGBZyubKzHrNzHLaNkwGubd1RQ6wTuH3ypbK5wdM3QsyTcLq6DMv7O3JsH2R3MynRLuPGzHiNmZq2VkAMvELOo-XBeUknxrAstHZhWNQJImH4DBtnY57Mid1o-BTz7xKvRIUQvsj217CqE4CnVV6lxaloq6jvlenWATzCdEa1Q6Y8XN7hftn4Hl5ZrnAltIblBI0_fq2bkhqzZolpURbhypAg0oTFpnmj82QEBy4vwwdCOaQ8_lQjqQhsd3ah4O9gSkpYa6YoAtV9eBu338skJbhjprUVq04qi62Er_iichx";
//Initialize values
byte enckey[sizeof(BASE64_ENCKEY)];
Base64::atob(BASE64_ENCKEY, enckey, sizeof(enckey));
byte iv[sizeof(BASE64_IV)];
int ivLen = Base64::atob(BASE64_IV, iv, sizeof(iv));
byte hmacKey[sizeof(BASE64_HMACKEY)];
int hmacKeyLen = Base64::atob(BASE64_HMACKEY, hmacKey, sizeof(hmacKey));
char keys[sizeof(KEYS)];
int keysLen = Base64::atob(KEYS, (byte *)keys, sizeof(keys));
byte pubkdata[sizeof(SDK_PUBKEY)];
int pubkdatalen = Base64::atob(SDK_PUBKEY, (byte *)pubkdata, sizeof(pubkdata));
//////////////////////
//Test AES-CBC encryption
string result;
string input = CONTENT;
SymmCipher sym(enckey);
ASSERT_TRUE(sym.cbc_encrypt_pkcs_padding(&input, iv, &result));
//Check result
char* base64Result = new char[result.size()*4/3+4];
Base64::btoa((const byte *)result.data(), static_cast<int>(result.size()), base64Result);
ASSERT_STREQ(base64Result, CIPHER_BYTES);
//////////////////////
//Test AES-CBC decryption
string plain;
ASSERT_TRUE(sym.cbc_decrypt_pkcs_padding(&result, iv, &plain));
//Check result
ASSERT_STREQ(input.c_str(), plain.c_str());
//////////////////////
//Test HMAC-SHA256
string toAuth;
toAuth.assign((char*)iv, static_cast<size_t>(ivLen));
toAuth.append(result);
string mac;
mac.resize(32);
HMACSHA256 hmacProcessor(hmacKey, static_cast<size_t>(hmacKeyLen));
hmacProcessor.add((byte *)toAuth.data(), toAuth.size());
hmacProcessor.get((byte *)mac.data());
//Check result
char* macResult = new char[mac.size()*4/3+4];
Base64::btoa((const byte *)mac.data(), static_cast<int>(mac.size()), macResult);
ASSERT_STREQ(macResult, HMAC);
//////////////////////
//Test PayCrypter:encryptPayload()
PrnGen rng;
string payCrypterResult;
PayCrypter payCrypter(rng);
payCrypter.setKeys(enckey, hmacKey, iv);
ASSERT_TRUE(payCrypter.encryptPayload(&input, &payCrypterResult));
//Prepare the expected result
string CRYPT_PAYLOAD = mac;
CRYPT_PAYLOAD.append((char*)iv, static_cast<size_t>(ivLen));
CRYPT_PAYLOAD.append(result);
char* expectedPayload = new char[CRYPT_PAYLOAD.size()*4/3+4];
Base64::btoa((const byte *)CRYPT_PAYLOAD.data(), static_cast<int>(CRYPT_PAYLOAD.size()), expectedPayload);
//Check result
char* encryptPayloadResult = new char[payCrypterResult.size()*4/3+4];
Base64::btoa((const byte *)payCrypterResult.data(), static_cast<int>(payCrypterResult.size()), encryptPayloadResult);
ASSERT_STREQ(expectedPayload, encryptPayloadResult);
//////////////////////
//Test PayCrypter:rsaEncryptKeys(), disabling random padding to get known results
string message = "Klaatu barada nikto.";
string rsaRes;
ASSERT_TRUE(payCrypter.rsaEncryptKeys(&message, pubkdata, pubkdatalen, &rsaRes, false));
//Check result
char* rsaResult = new char[rsaRes.size()*4/3+4];
Base64::btoa((const byte *)rsaRes.data(), static_cast<int>(rsaRes.size()), rsaResult);
ASSERT_STREQ(rsaResult, CRYPT_GORT_SAYS);
//////////////////////
//Test PayCrypter:rsaEncryptKeys() with a binary input, disabling random padding to get known results
string cryptKeysBytesBin;
message.assign(keys, static_cast<size_t>(keysLen));
ASSERT_TRUE(payCrypter.rsaEncryptKeys(&message, pubkdata, pubkdatalen, &cryptKeysBytesBin, false));
//Check result
char* cryptKeysBytes = new char[cryptKeysBytesBin.size()*4/3+4];
Base64::btoa((const byte *)cryptKeysBytesBin.data(), static_cast<int>(cryptKeysBytesBin.size()), cryptKeysBytes);
ASSERT_STREQ(cryptKeysBytes, CRYPT_KEYS_BYTES);
//////////////////////
//Test PayCrypter:hybridEncrypt()
string finalResult;
string contentString = CONTENT;
ASSERT_TRUE(payCrypter.hybridEncrypt(&contentString, pubkdata, pubkdatalen, &finalResult, false));
//Prepare the expected result
string expectedResult = cryptKeysBytesBin;
expectedResult.append(CRYPT_PAYLOAD);
char* expectedBase64Result = new char[expectedResult.size()*4/3+4];
Base64::btoa((const byte *)expectedResult.data(), static_cast<int>(expectedResult.size()), expectedBase64Result);
//Check result
char* finalCheck = new char[finalResult.size()*4/3+4];
Base64::btoa((const byte *)finalResult.data(), static_cast<int>(finalResult.size()), finalCheck);
ASSERT_STREQ(finalCheck, expectedBase64Result);
//////////////////////
delete[] finalCheck;
delete[] expectedBase64Result;
delete[] cryptKeysBytes;
delete[] rsaResult;
delete[] base64Result;
delete[] macResult;
delete[] expectedPayload;
delete[] encryptPayloadResult;
}
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