Add Salsa20_Core transform (GH #630) (#632)

1 files changed, 9 insertions, 0 deletions

diff --git a/salsa.h b/salsa.h
index fcbfd994..957f654a 100644
--- a/salsa.h
+++ b/salsa.h
@@ -16,6 +16,15 @@
 

 NAMESPACE_BEGIN(CryptoPP)

 

+/// \brief Salsa20 core transform

+/// \param data the data to transform

+/// \param rounds the number of rounds

+/// \details Several algorithms, like CryptoBox and Scrypt, require access to

+///   the core Salsa20 transform. The current Crypto++ implementation does not

+///   lend itself to disgorging the Salsa20 cipher from the Salsa20 core transform.

+///   Instead Salsa20_Core is provided with customary accelerations.

+void Salsa20_Core(word32* data, unsigned int rounds);

+

 /// \brief Salsa20 stream cipher information

 struct Salsa20_Info : public VariableKeyLength<32, 16, 32, 16, SimpleKeyingInterface::UNIQUE_IV, 8>

 {