Added a sodium implementation for creating private and public keys.

2 files changed, 22 insertions, 2 deletions

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};
 }