diff options
| -rw-r--r-- | padlkrng.cpp | 2 | ||||
| -rw-r--r-- | padlkrng.h | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/padlkrng.cpp b/padlkrng.cpp index 13a90b75..d4b494da 100644 --- a/padlkrng.cpp +++ b/padlkrng.cpp @@ -16,7 +16,7 @@ NAMESPACE_BEGIN(CryptoPP) PadlockRNG::PadlockRNG(word32 divisor)
: m_divisor(DivisorHelper(divisor))
{
-#if CRYPTOPP_X86_ASM_AVAILABLE
+#if defined(CRYPTOPP_X86_ASM_AVAILABLE)
if (!HasPadlockRNG())
throw PadlockRNG_Err("PadlockRNG", "PadlockRNG generator not available");
#else
@@ -26,7 +26,9 @@ public: : Exception(OTHER_ERROR, component + ": " + message) {}
};
-//! \brief Hardware generated random numbers using PadlockRNG instruction
+//! \brief Hardware generated random numbers using VIA XSTORE
+//! \details Some VIA processors provide a Security Engine called Padlock. The Padlock
+//! Security Engine provides AES, SHA and a RNG. PadlockRNG provides access to the RNG.
//! \details The PadlockRNG uses an 8 byte FIFO buffer for random numbers. The
//! generator can be configured to discard bits from the buffer to resist analysis.
//! The <tt>divisor</tt> controls the number of bytes discarded. The formula for
@@ -53,6 +55,8 @@ public: //! \brief Construct a PadlockRNG generator
//! \param divisor the XSTORE divisor
+ //! \details Some VIA processors provide a Security Engine called Padlock. The Padlock
+ //! Security Engine provides AES, SHA and a RNG. PadlockRNG provides access to the RNG.
//! \details The PadlockRNG uses an 8 byte FIFO buffer for random numbers. The
//! generator can be configured to discard bits from the buffer to resist analysis.
//! The <tt>divisor</tt> controls the number of bytes discarded. The formula for
|