Added a sodium implementation for creating private and public keys.

8 files changed, 49 insertions, 25 deletions

diff --git a/CMakeModules/ImportSodium.cmake b/CMakeModules/ImportSodium.cmake
new file mode 100644
index 0000000..a8b939c
--- /dev/null
+++ b/CMakeModules/ImportSodium.cmake
@@ -0,0 +1,10 @@
+
+add_library(Sodium UNKNOWN IMPORTED)
+
+find_library(Sodium_LIBRARY NAMES "sodium")
+
+set_property(TARGET Sodium PROPERTY IMPORTED_LOCATION "${Sodium_LIBRARY}")
+
+find_path(Sodium_INCLUDE_DIR NAMES "sodium.h")
+
+set_property(TARGET Sodium PROPERTY INCLUDE_DIRECTORIES ${Sodium_INCLUDE_DIR})
diff --git a/libcmix-crypto/CMakeLists.txt b/libcmix-crypto/CMakeLists.txt
index 907c601..d40d44e 100644
--- a/libcmix-crypto/CMakeLists.txt
+++ b/libcmix-crypto/CMakeLists.txt
@@ -1,10 +1,16 @@
 
-add_library(cmix-crypto-interface INTERFACE)
+add_library(cmix-crypto INTERFACE)
 
-target_include_directories(cmix-crypto-interface
+target_include_directories(cmix-crypto
 	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+target_sources(cmix-crypto
+	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/keypair.h
+	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/keymanagement.h
+	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/message.h
+)
+
 include(curve25519_implementations)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/curve25519/)
 
@@ -12,24 +18,9 @@ include(rsa_implementations)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/rsa)
 
 
-add_library(cmix-crypto
-	message.h message.c
-	keymanagement.h keymanagement.c
-	keypair.h
-)
-
-target_include_directories(cmix-crypto
-	PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
-)
-
-target_compile_options(cmix-crypto
-	PRIVATE "-std=c99"
-)
-
 option(UseEC "Use curve25519 instead of RSA" ON)
 
-
 target_link_libraries(cmix-crypto
-	PUBLIC curve25519-implementation
-#	PUBLIC rsa-implementation
+	INTERFACE curve25519-implementation
+#	INTERFACE rsa-implementation
 )
diff --git a/libcmix-crypto/curve25519/CMakeLists.txt b/libcmix-crypto/curve25519/CMakeLists.txt
index 7885e7d..dc29c4d 100644
--- a/libcmix-crypto/curve25519/CMakeLists.txt
+++ b/libcmix-crypto/curve25519/CMakeLists.txt
@@ -5,8 +5,12 @@ target_include_directories(curve25519-interface
 	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
+target_sources(curve25519-interface
+	INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/curve25519.h
+)
+
 target_link_libraries(curve25519-interface
-	INTERFACE cmix-crypto-interface
+	INTERFACE cmix-crypto
 )
 
 foreach(impl ${curve25519_implementations})
diff --git a/libcmix-crypto/curve25519/sodium/CMakeLists.txt b/libcmix-crypto/curve25519/sodium/CMakeLists.txt
index 9fbf010..213a49f 100644
--- a/libcmix-crypto/curve25519/sodium/CMakeLists.txt
+++ b/libcmix-crypto/curve25519/sodium/CMakeLists.txt
@@ -2,6 +2,8 @@ include(get_target_name)
 
 get_target_name(target_name)
 
+include(ImportSodium)
+
 add_library(${target_name}
 	libsodium_curve25519.c
 )
@@ -12,4 +14,5 @@ target_compile_options(${target_name}
 
 target_link_libraries(${target_name}
 	PUBLIC curve25519-interface
+	PUBLIC Sodium
 )
diff --git a/libcmix-crypto/curve25519/sodium/libsodium_curve25519.c b/libcmix-crypto/curve25519/sodium/libsodium_curve25519.c
index 23dbf12..8fd087a 100644
--- a/libcmix-crypto/curve25519/sodium/libsodium_curve25519.c
+++ b/libcmix-crypto/curve25519/sodium/libsodium_curve25519.c
@@ -1,13 +1,30 @@
 
 #include "curve25519.h"
 
+#include <sodium.h>
+
 #include <stddef.h>
+#include <stdlib.h>
+
+void init() {
+	if(sodium_init() == -1) {
+		exit(-1);
+	}
+}
 
 void sodium_curve25519_keypair_deleter(struct KeyPair* p) {
-	free(p->sec);
+	sodium_free(p->sec);
 	free(p->pub);
 }
 
 struct KeyPair curve25519_create_keypair() {
-	return (struct KeyPair){NULL, NULL, 0, 0, &sodium_curve25519_keypair_deleter};
+	init();
+
+	unsigned char* sec = (unsigned char*) sodium_malloc(crypto_box_SECRETKEYBYTES);
+	unsigned char* pub = (unsigned char*) malloc(crypto_box_PUBLICKEYBYTES);
+
+	randombytes_buf(sec, crypto_box_SECRETKEYBYTES);
+	crypto_scalarmult_base(pub, sec);
+
+	return (struct KeyPair){sec, pub, crypto_box_SECRETKEYBYTES, crypto_box_PUBLICKEYBYTES, &sodium_curve25519_keypair_deleter};
 }
diff --git a/libcmix-crypto/keymanagement.c b/libcmix-crypto/keymanagement.c
deleted file mode 100644
index 49e8316..0000000
--- a/libcmix-crypto/keymanagement.c
+++ /dev/null
@@ -1 +0,0 @@
-#include "keymanagement.h"
diff --git a/libcmix-crypto/keypair.h b/libcmix-crypto/keypair.h
index 90cf16b..df5ec88 100644
--- a/libcmix-crypto/keypair.h
+++ b/libcmix-crypto/keypair.h
@@ -13,8 +13,8 @@ typedef void(*KeyPairDeleter)(struct KeyPair*);
 void keypair_deleter(struct KeyPair* p) ;
 
 struct KeyPair {
-	char* sec;
-	char* pub;
+	unsigned char* sec;
+	unsigned char* pub;
 	unsigned int sec_len;
 	unsigned int pub_len;
 	KeyPairDeleter deleter;
diff --git a/libcmix-crypto/message.c b/libcmix-crypto/message.c
deleted file mode 100644
index e69de29..0000000
--- a/libcmix-crypto/message.c
+++ /dev/null