Added the Preprocessing step for the Precomputation of CMix.

1 files changed, 27 insertions, 8 deletions

diff --git a/libcmix-crypto/api.h b/libcmix-crypto/api.h
index 99f6417..f50cee0 100644
--- a/libcmix-crypto/api.h
+++ b/libcmix-crypto/api.h
@@ -10,6 +10,7 @@ extern "C" {
 
 #include <stdbool.h>
 
+#include "groupelement.h"
 #include "keypair.h"
 #include "sharedkey.h"
 
@@ -31,7 +32,7 @@ typedef void (*KeyPairDeleter)(struct KeyPair*);
  * \brief Defines how a Derived Shared Key function should look like.
  *        Used to store a pointer to function to a implementation.
  */
-typedef struct SharedKey (*SharedKeyDeriver)(struct KeyPair, unsigned char const*, size_t, unsigned char const*, size_t, void*, bool);
+typedef struct SharedKey (*SharedKeyDeriver)(struct KeyPair, unsigned char const*, size_t, unsigned char const*, size_t, GroupElement, bool);
 
 /*!
  * \brief Defines how a Derived Shared Key deleter function should look like.
@@ -47,27 +48,42 @@ typedef void(*Deinitializer)(void);
 /*!
  * \brief PubKeyArrayGetter typedef
  */
-typedef void(*KeyArrayGetter)(char**, size_t* size, void*);
+typedef void(*ElementToArray)(unsigned char**, size_t* size, GroupElement);
+
+/*!
+ *
+ */
+typedef GroupElement(*ArrayToElement)(char const*, size_t size, bool);
 
 /*!
  * \brief PublicShareAdder typedef
  */
-typedef void(*PublicShareAdder)(char**, size_t*, char const*, size_t, void*);
+typedef void(*PublicShareAdder)(char**, size_t*, char const*, size_t, GroupElement);
 
 /*!
  *
  */
-typedef void*(*GroupElementGetter)(bool);
+typedef GroupElement(*GroupElementGetter)(bool);
 
 /*!
  * 
  */
-typedef void*(*KeyExchangeValueGetter)(void*);
+typedef GroupElement(*KeyExchangeValueGetter)(GroupElement);
+
+/*!
+ *
+ */
+typedef GroupElement(*GroupElementMultiplier)(GroupElement, GroupElement, bool);
 
 /*!
  *
  */
-typedef void(*GroupElementDeleter)(void*);
+typedef void(*GroupElementDeleter)(GroupElement);
+
+/*!
+ *
+ */
+typedef void (*Encrypter)(GroupElement*, GroupElement*, GroupElement, GroupElement);
 
 /*!
  * \brief The Api struct stores pointers to functions of a specific implementation. Like a Curve25519 specific one.
@@ -76,13 +92,16 @@ struct Api {
 	Initializer initialize; ///< Function that will initialize the crypto library.
 	KeyPairCreator create_key_pair; ///< Pointer to keypair creation function
 	KeyPairDeleter free_key_pair; ///< Pointer to keypair deletor function
-	KeyArrayGetter get_key_array; ///< Get the array representation of a public key
+	ElementToArray element_to_array; ///< Get the array representation of a public key
+	ArrayToElement array_to_element; ///< The the GroupElement representation of this array;
 	GroupElementGetter get_group_element; ///< get group element
-	KeyExchangeValueGetter get_key_exchange_value; ///< get generator *op* group element.
 	GroupElementDeleter free_group_element; ///< frees a base type of the cryptolibrary.
+	KeyExchangeValueGetter get_key_exchange_value; ///< get generator *op* group element.
+	GroupElementMultiplier multiply; ///< Multiplies two groupelements modulo group.
 	PublicShareAdder add_public_share; ///< Adds the public key stored in void* to the existing share.
 	SharedKeyDeriver derive_shared_key; ///< Pointer to shared key derivation function
 	SharedKeyDeleter free_shared_key; ///< Pointer to shared key deleter function
+	Encrypter encrypt; ///< encrypt value with key;
 	Deinitializer deinitialize; ///< Function that will deinitialize the crypto library.
 };