Added a sodium implementation for creating private and public keys.

1 files changed, 19 insertions, 2 deletions

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};
 }