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Bootloader: optimize code size in single cipher mode by manually inlining EAInit, EAGetFirst and EAGetKeySize, and by removing the loop in ReadVolumeHeader that tests for encryption algorithms.

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This commit is contained in:
Mounir IDRASSI
2014-10-26 00:33:18 +02:00
parent c61f8c70de
commit c1378f781a
3 changed files with 61 additions and 26 deletions
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27
src/Common/Crypto.c
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@@ -965,20 +965,11 @@ void DecipherBlock(int cipher, void *data, void *ks)
#endif
}
int EAGetFirst ()
{
return 1;
}
int EAGetNext (int previousEA)
{
return 0;
}
int EAInit (int ea, unsigned char *key, unsigned __int8 *ks)
{
#ifdef TC_WINDOWS_BOOT_AES
int EAInit (unsigned char *key, unsigned __int8 *ks)
{
aes_init();
if (aes_encrypt_key256 (key, (aes_encrypt_ctx *) ks) != EXIT_SUCCESS)
@@ -986,23 +977,11 @@ int EAInit (int ea, unsigned char *key, unsigned __int8 *ks)
if (aes_decrypt_key256 (key, (aes_decrypt_ctx *) (ks + sizeof (aes_encrypt_ctx))) != EXIT_SUCCESS)
return ERR_CIPHER_INIT_FAILURE;
#elif defined (TC_WINDOWS_BOOT_SERPENT)
serpent_set_key (key, ks);
#elif defined (TC_WINDOWS_BOOT_TWOFISH)
twofish_set_key ((TwofishInstance *)ks, (const u4byte *)key);
#endif
return ERR_SUCCESS;
}
int EAGetKeySize (int ea)
{
return 32;
}
#endif
int EAGetFirstCipher (int ea)
{
return 1;
}
void EncryptBuffer (unsigned __int8 *buf, TC_LARGEST_COMPILER_UINT len, PCRYPTO_INFO cryptoInfo)
{