From 5cd610a07468137066ea4daa5176c3e7045113b0 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Wed, 5 Aug 2020 03:38:22 +0200
Subject: ecp moved to root; fixed utils and tests

---
 ecp/src/crypto/test/aead_enc.c | 55 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 ecp/src/crypto/test/aead_enc.c

(limited to 'ecp/src/crypto/test/aead_enc.c')

diff --git a/ecp/src/crypto/test/aead_enc.c b/ecp/src/crypto/test/aead_enc.c
new file mode 100644
index 0000000..a103490
--- /dev/null
+++ b/ecp/src/crypto/test/aead_enc.c
@@ -0,0 +1,55 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <crypto.h>
+#include <curve25519.h>
+
+#define NONCE_LEN   8
+#define TAG_LEN     16
+#define KEY_LEN     32
+
+static int v_rng(void *buf, size_t bufsize) {
+    int fd;
+    
+    if((fd = open("/dev/urandom", O_RDONLY)) < 0) return -1;
+    size_t nb = read(fd, buf, bufsize);
+    close(fd);
+    if (nb != bufsize) return -1;
+    return 0;
+}
+
+int main(int argc, char *argv[]) {
+    unsigned char in_msg[1024];
+    unsigned char out_msg[1024];
+    size_t in_msg_len;
+    size_t out_msg_len;
+    int rv;
+    unsigned char public1[KEY_LEN];
+    unsigned char private1[KEY_LEN];
+    unsigned char public2[KEY_LEN];
+    unsigned char private2[KEY_LEN];
+    unsigned char key[KEY_LEN];
+    unsigned char nonce[NONCE_LEN];
+
+    strcpy((char *)in_msg, "PERA JE CAR!");
+    in_msg_len = strlen((char *)in_msg) + 1;
+
+    v_rng(nonce, NONCE_LEN);
+    X25519_keypair(public1, private1, v_rng);
+    X25519_keypair(public2, private2, v_rng);
+    
+    X25519(key, private1, public2);
+    rv = aead_chacha20_poly1305_seal(out_msg, &out_msg_len, 1024, key, TAG_LEN, nonce, NONCE_LEN, in_msg, in_msg_len, NULL, 0);
+    printf("SEAL RV:%d ILEN:%lu OLEN:%lu\n", rv, in_msg_len, out_msg_len);
+    
+    unlink("msg.enc");
+    int fd = open("msg.enc", O_WRONLY | O_CREAT);
+    write(fd, private2, KEY_LEN);
+    write(fd, public1, KEY_LEN);
+    write(fd, nonce, NONCE_LEN);
+    write(fd, out_msg, out_msg_len);
+    close(fd);
+}
\ No newline at end of file
-- 
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