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wolfCrypt as crypto backend for VeraCrypt (#1227)

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* wolfCrypt as crypto backend for VeraCrypt

* Refactor to use EncryptionModeWolfCryptXTS class
This commit is contained in:
lealem47
2023-11-12 16:51:31 -07:00
committed by GitHub
parent 458be85f84
commit 9247ce1bb9
36 changed files with 1104 additions and 220 deletions
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58
src/Volume/Cipher.cpp
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@@ -94,11 +94,12 @@ namespace VeraCrypt
CipherList l;
l.push_back (shared_ptr <Cipher> (new CipherAES ()));
#ifndef WOLFCRYPT_BACKEND
l.push_back (shared_ptr <Cipher> (new CipherSerpent ()));
l.push_back (shared_ptr <Cipher> (new CipherTwofish ()));
l.push_back (shared_ptr <Cipher> (new CipherCamellia ()));
l.push_back (shared_ptr <Cipher> (new CipherKuznyechik ()));
#endif
return l;
}
@@ -115,6 +116,37 @@ namespace VeraCrypt
Initialized = true;
}
#ifdef WOLFCRYPT_BACKEND
void Cipher::SetKeyXTS (const ConstBufferPtr &key)
{
if (key.Size() != GetKeySize ())
throw ParameterIncorrect (SRC_POS);
if (!Initialized)
ScheduledKey.Allocate (GetScheduledKeySize ());
SetCipherKeyXTS (key);
Key.CopyFrom (key);
Initialized = true;
}
void Cipher::EncryptBlockXTS (byte *data, uint64 length, uint64 startDataUnitNo) const
{
if (!Initialized)
throw NotInitialized (SRC_POS);
EncryptXTS (data, length, startDataUnitNo);
}
void Cipher::DecryptBlockXTS (byte *data, uint64 length, uint64 startDataUnitNo) const
{
if (!Initialized)
throw NotInitialized (SRC_POS);
DecryptXTS (data, length, startDataUnitNo);
}
#endif
#define TC_EXCEPTION(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE)
#undef TC_EXCEPTION_NODECL
#define TC_EXCEPTION_NODECL(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE)
@@ -186,6 +218,26 @@ namespace VeraCrypt
#endif
Cipher::EncryptBlocks (data, blockCount);
}
#ifdef WOLFCRYPT_BACKEND
void CipherAES::EncryptXTS (byte *data, uint64 length, uint64 startDataUnitNo) const
{
xts_encrypt (data, data, length, startDataUnitNo, (aes_encrypt_ctx *) ScheduledKey.Ptr());
}
void CipherAES::DecryptXTS (byte *data, uint64 length, uint64 startDataUnitNo) const
{
xts_decrypt (data, data, length, startDataUnitNo, (aes_decrypt_ctx *) (ScheduledKey.Ptr() + sizeof (aes_encrypt_ctx)));
}
void CipherAES::SetCipherKeyXTS (const byte *key)
{
if (xts_encrypt_key256 (key, (aes_encrypt_ctx *) ScheduledKey.Ptr()) != EXIT_SUCCESS)
throw CipherInitError (SRC_POS);
if (xts_decrypt_key256 (key, (aes_decrypt_ctx *) (ScheduledKey.Ptr() + sizeof (aes_encrypt_ctx))) != EXIT_SUCCESS)
throw CipherInitError (SRC_POS);
}
#endif
size_t CipherAES::GetScheduledKeySize () const
{
@@ -218,6 +270,7 @@ namespace VeraCrypt
throw CipherInitError (SRC_POS);
}
#ifndef WOLFCRYPT_BACKEND
// Serpent
void CipherSerpent::Decrypt (byte *data) const
{
@@ -465,5 +518,6 @@ namespace VeraCrypt
return false;
#endif
}
bool Cipher::HwSupportEnabled = true;
#endif
bool Cipher::HwSupportEnabled = true;
}