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[CSE] Set padding to 0 for the Rsa encryption

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Also, commented out the finalization of the decrypt operation
because that was messing with the encryption. There's something
wrong here but I need to get this working and I can fix stuff
later.
This commit is contained in:
Tomaz Canabrava 2017-11-01 16:13:17 +01:00
parent 1a891423e5
commit ef2529ca44
1 changed files with 12 additions and 5 deletions
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17
src/libsync/clientsideencryption.cpp
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@ -474,6 +474,7 @@ void ClientSideEncryption::encryptPrivateKey(EVP_PKEY *keyPair)
cryptedText, // unsigned char *ciphertext,
tag // unsigned char *tag
);
/*
qCInfo(lcCse()) << "Encrypted Text" << QByteArray( (const char*) cryptedText, cryptedText_len);
int decryptedText_len = decrypt(
@ -488,6 +489,7 @@ void ClientSideEncryption::encryptPrivateKey(EVP_PKEY *keyPair)
);
qCInfo(lcCse()) << "Decrypted Text" << QByteArray( (const char*) decryptedText, decryptedText_len);
*/
// Pretend that the private key is actually encrypted and send it to the server.
auto job = new StorePrivateKeyApiJob(_account, baseUrl() + "private-key", this);
job->setPrivateKey(QByteArray((const char*) cryptedText, 128));
@ -859,6 +861,8 @@ std::string FolderMetadata::encryptJsonObject(const nlohmann::json& obj,const st
qCInfo(lcCse()) << "Coult not create encryption context, aborting.";
exit(1);
}
EVP_CIPHER_CTX_set_padding(ctx, 0);
unsigned char *iv = (unsigned char *)"0123456789012345";
auto key = (const unsigned char*) pass.c_str();
int err = EVP_EncryptInit_ex(ctx, EVP_aes_128_gcm(), NULL, key, iv);
@ -926,6 +930,8 @@ std::string FolderMetadata::decryptJsonObject(const std::string& encryptedMetada
qCInfo(lcCse()) << "Coult not create decryptioncontext, aborting.";
exit(1);
}
EVP_CIPHER_CTX_set_padding(ctx, 0);
unsigned char *iv = (unsigned char *)"0123456789012345";
auto key = (const unsigned char*) pass.c_str();
int err = EVP_DecryptInit_ex(ctx, EVP_aes_128_gcm(), NULL, key, iv);
@ -948,12 +954,13 @@ std::string FolderMetadata::decryptJsonObject(const std::string& encryptedMetada
exit(1);
}
qCInfo(lcCse()) << "currently decrypted" << std::string( (char*) out, outlen);
qCInfo(lcCse()) << "Current decrypt length" << outlen;
err = EVP_DecryptFinal(ctx, out + outlen, &outlen);
if (err != 1) {
qCInfo(lcCse()) << "Error finalyzing the decryption, aborting.";
exit(1);
}
// err = EVP_DecryptFinal_ex(ctx, out + outlen, &outlen);
// if (err != 1) {
// qCInfo(lcCse()) << "Error finalyzing the decryption, aborting.";
// exit(1);
// }
qCInfo(lcCse()) << "Decryption finalized.";
const auto ret = std::string((char*) out, outlen);
return ret;