Adds libgcrypt implementation for elgamal in multiplicative group.

Also adapts the API to both handle sodium and gcrypt libraries.

1 files changed, 26 insertions, 5 deletions

diff --git a/libcmix-crypto/api.h b/libcmix-crypto/api.h
index c6f904f..5267f33 100644
--- a/libcmix-crypto/api.h
+++ b/libcmix-crypto/api.h
@@ -13,44 +13,65 @@ extern "C" {
 #include "keypair.h"
 #include "sharedkey.h"
 
+typedef void(*Initializer)(void);
+
 /*! 
  * \brief Defines how a KeyPair create function should look like.
  *        Used to store a pointer to function to a implementation.
  */
-typedef struct KeyPair (*KeyPairCreator)();
+typedef struct KeyPair (*KeyPairCreator)(void);
 
 /*!
  * \brief Defines how a KeyPair deleter function should look like.
  *        Used to store a pointer to function to a implementation.
  */
-typedef void (*KeyPairDeleter)(struct KeyPair);
+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*, bool);
+typedef struct SharedKey (*SharedKeyDeriver)(struct KeyPair, void const*, bool);
 
 /*!
  * \brief Defines how a Derived Shared Key deleter function should look like.
  *        Used to store a pointer to function to a implementation.
  */
-typedef void (*SharedKeyDeleter)(struct SharedKey);
+typedef void (*SharedKeyDeleter)(struct SharedKey*);
+
+/*!
+ * \brief Defines how the crypto library deinitialization should look.
+ */
+typedef void(*Deinitializer)(void);
+
+/*!
+ * \brief PubKeyArrayGetter typedef
+ */
+typedef void(*KeyArrayGetter)(char**, size_t* size, void*);
+
+/*!
+ * \brief PublicShareAdder typedef
+ */
+typedef void(*PublicShareAdder)(char**, size_t*, char const*, size_t, void*);
 
 /*!
  * \brief The Api struct stores pointers to functions of a specific implementation. Like a Curve25519 specific one.
  */
 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;
+	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
+	Deinitializer deinitialize; ///< Function that will deinitialize the crypto library.
 };
 
 /*!
  * A Pointer to function typedef to facilitate multiple implementations.
  */
-typedef struct Api(*ImplementationGetter)();
+typedef struct Api(*ImplementationGetter)(void);
 
 /*!
  * \brief get_implementation The pointer to member function variable to implement when