//static
bool OTAsymmetricKey_OpenSSL::OTAsymmetricKey_OpenSSLPrivdp::ArmorPrivateKey(EVP_PKEY & theKey, OTASCIIArmor & ascKey, Timer & theTimer, OTPasswordData * pPWData/*=NULL*/, OTPassword * pImportPassword/*=NULL*/)
{
bool bReturnVal = false;
ascKey.Release();
// ----------------------------------------
// Create a new memory buffer on the OpenSSL side
OpenSSL_BIO bmem = BIO_new(BIO_s_mem());
OT_ASSERT(NULL != bmem);
int64_t lSize = 0;
// ----------------------------------------
// write a private key to that buffer, from theKey
//
OTPasswordData thePWData("OTAsymmetricKey_OpenSSL::ArmorPrivateKey is calling PEM_write_bio_PrivateKey...");
if (NULL == pPWData)
pPWData = &thePWData;
int32_t nWriteBio = 0;
if (NULL == pImportPassword)
nWriteBio = PEM_write_bio_PrivateKey(bmem, &theKey, EVP_des_ede3_cbc(), // todo should this algorithm be hardcoded?
NULL, 0, OTAsymmetricKey::GetPasswordCallback(), pPWData);
else
nWriteBio = PEM_write_bio_PrivateKey(bmem, &theKey, EVP_des_ede3_cbc(), // todo should this algorithm be hardcoded?
NULL, 0, 0, const_cast<void*>(reinterpret_cast<const void*>(pImportPassword->getPassword())));
if (0 == nWriteBio)
{
OTLog::vError("%s: Failed writing EVP_PKEY to memory buffer.\n", __FUNCTION__);
}
else
{
// TODO (remove theTimer entirely. OTCachedKey replaces already.)
// I set this timer because the above required a password. But now that master key is working,
// the above would flow through even WITHOUT the user typing his passphrase (since master key still
// not timed out.) Resulting in THIS timer being reset! Todo: I already shortened this timer to 30
// seconds, but need to phase it down to 0 and then remove it entirely! Master key takes over now!
//
theTimer.start(); // Note: this isn't the ultimate timer solution. See notes in ReleaseKeyLowLevel.
// --------------------
OTLog::vOutput(5, "%s: Success writing EVP_PKEY to memory buffer.\n", __FUNCTION__);
OTPayload theData;
char * pChar = NULL;
// After the below call, pChar will point to the memory buffer where the private key supposedly is,
// and lSize will contain the size of that memory.
//
lSize = BIO_get_mem_data(bmem, &pChar);
uint32_t nSize = static_cast<uint32_t>(lSize);
if (nSize > 0)
{
// Set the buffer size in our own memory.
theData.SetPayloadSize(nSize);
// void * pv =
OTPassword::safe_memcpy((static_cast<char*>(const_cast<void*>(theData.GetPayloadPointer()))), // destination
theData.GetSize(), // size of destination buffer.
pChar, // source
nSize); // length of source.
// bool bZeroSource=false); // if true, sets the source buffer to zero after copying is done.
// ------------------------------------------------
// This base64 encodes the private key data, which
// is already encrypted to its passphase as well.
//
ascKey.SetData(theData);
OTLog::vOutput(5, "%s: Success copying private key into memory.\n", __FUNCTION__);
bReturnVal = true;
}
else
{
OTLog::vError("%s: Failed copying private key into memory.\n", __FUNCTION__);
}
}
return bReturnVal;
}
// Take a public key, theKey (input), and create an armored version of
// it into ascKey (output.)
//
// OpenSSL loaded key ===> ASCII-Armored export of same key.
//
//static
//
bool OTAsymmetricKey_OpenSSL::OTAsymmetricKey_OpenSSLPrivdp::ArmorPublicKey(EVP_PKEY & theKey, OTASCIIArmor & ascKey)
{
bool bReturnVal = false;
const char * szFunc = "OTAsymmetricKey_OpenSSL::ArmorPublicKey";
ascKey.Release();
// ----------------------------------------
// Create a new memory buffer on the OpenSSL side
OpenSSL_BIO bmem = BIO_new(BIO_s_mem());
OT_ASSERT_MSG(NULL != bmem, "OTAsymmetricKey_OpenSSL::ArmorPublicKey: ASSERT: NULL != bmem");
int64_t lSize = 0;
// ----------------------------------------
// write a public key to that buffer, from theKey (parameter.)
//
int32_t nWriteBio = PEM_write_bio_PUBKEY(bmem, &theKey);
if (0 == nWriteBio)
{
OTLog::vError("%s: Error: Failed writing EVP_PKEY to memory buffer.\n", szFunc);
}
else
{
OTLog::vOutput(5, "%s: Success writing EVP_PKEY to memory buffer.\n", szFunc);
OTPayload theData;
char * pChar = NULL;
// After the below call, pChar will point to the memory buffer where the public key
// supposedly is, and lSize will contain the size of that memory.
//
lSize = BIO_get_mem_data(bmem, &pChar);
uint32_t nSize = static_cast<uint32_t>(lSize); // todo security, etc. Fix this assumed type conversion.
if (nSize > 0)
{
// Set the buffer size in our own memory.
theData.SetPayloadSize(nSize);
// void * pv =
OTPassword::safe_memcpy((static_cast<char*>(const_cast<void*>(theData.GetPayloadPointer()))), // destination
theData.GetSize(), // size of destination buffer.
pChar, // source
nSize); // length of source.
// bool bZeroSource=false); // if true, sets the source buffer to zero after copying is done.
// ------------------------------------------------
// This base64 encodes the public key data
//
ascKey.SetData(theData);
OTLog::vOutput(5, "%s: Success copying public key into memory.\n", szFunc);
bReturnVal = true;
}
else
{
OTLog::vError("%s: Failed copying public key into memory.\n", szFunc);
}
}
return bReturnVal;
}