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author | peterbell10 <peterbell10@live.co.uk> | 2017-08-30 16:00:06 +0200 |
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committer | Tiger Wang <ziwei.tiger@outlook.com> | 2017-08-30 16:00:06 +0200 |
commit | 84941bcc9f25cbe3fd3b2604080d0a1cfd8fbaa7 (patch) | |
tree | aa1648c2ba260b8576673677435481d371eec7b0 /src/PolarSSL++/AesCfb128Decryptor.cpp | |
parent | Update core plugins to latest version (#3951) (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/mbedTLS++/AesCfb128Decryptor.cpp (renamed from src/PolarSSL++/AesCfb128Decryptor.cpp) | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/src/PolarSSL++/AesCfb128Decryptor.cpp b/src/mbedTLS++/AesCfb128Decryptor.cpp index 0aba1c42c..78a7ab9c5 100644 --- a/src/PolarSSL++/AesCfb128Decryptor.cpp +++ b/src/mbedTLS++/AesCfb128Decryptor.cpp @@ -1,4 +1,4 @@ - + // AesCfb128Decryptor.cpp // Implements the cAesCfb128Decryptor class decrypting data using AES CFB-128 @@ -10,10 +10,10 @@ -cAesCfb128Decryptor::cAesCfb128Decryptor(void) : - m_IVOffset(0), +cAesCfb128Decryptor::cAesCfb128Decryptor(void): m_IsValid(false) { + mbedtls_aes_init(&m_Aes); } @@ -23,7 +23,7 @@ cAesCfb128Decryptor::cAesCfb128Decryptor(void) : cAesCfb128Decryptor::~cAesCfb128Decryptor() { // Clear the leftover in-memory data, so that they can't be accessed by a backdoor - memset(&m_Aes, 0, sizeof(m_Aes)); + mbedtls_aes_free(&m_Aes); } @@ -35,7 +35,7 @@ void cAesCfb128Decryptor::Init(const Byte a_Key[16], const Byte a_IV[16]) ASSERT(!IsValid()); // Cannot Init twice memcpy(m_IV, a_IV, 16); - aes_setkey_enc(&m_Aes, a_Key, 128); + mbedtls_aes_setkey_enc(&m_Aes, a_Key, 128); m_IsValid = true; } @@ -46,19 +46,7 @@ void cAesCfb128Decryptor::Init(const Byte a_Key[16], const Byte a_IV[16]) void cAesCfb128Decryptor::ProcessData(Byte * a_DecryptedOut, const Byte * a_EncryptedIn, size_t a_Length) { ASSERT(IsValid()); // Must Init() first - - // PolarSSL doesn't support AES-CFB8, need to implement it manually: - for (size_t i = 0; i < a_Length; i++) - { - Byte Buffer[sizeof(m_IV)]; - aes_crypt_ecb(&m_Aes, AES_ENCRYPT, m_IV, Buffer); - for (size_t idx = 0; idx < sizeof(m_IV) - 1; idx++) - { - m_IV[idx] = m_IV[idx + 1]; - } - m_IV[sizeof(m_IV) - 1] = a_EncryptedIn[i]; - a_DecryptedOut[i] = a_EncryptedIn[i] ^ Buffer[0]; - } + mbedtls_aes_crypt_cfb8(&m_Aes, MBEDTLS_AES_DECRYPT, a_Length, m_IV, a_EncryptedIn, a_DecryptedOut); } |