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_dec.c | 46 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 ecp/src/crypto/test/aead_dec.c

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

diff --git a/ecp/src/crypto/test/aead_dec.c b/ecp/src/crypto/test/aead_dec.c
new file mode 100644
index 0000000..7deb587
--- /dev/null
+++ b/ecp/src/crypto/test/aead_dec.c
@@ -0,0 +1,46 @@
+#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
+#define MSG_LEN     29
+
+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;
+    int rv;
+    unsigned char public[KEY_LEN];
+    unsigned char private[KEY_LEN];
+    unsigned char key[KEY_LEN];
+    unsigned char nonce[NONCE_LEN];
+
+    int fd = open("msg.enc", O_RDONLY);
+    read(fd, private, KEY_LEN);
+    read(fd, public, KEY_LEN);
+    read(fd, nonce, NONCE_LEN);
+    read(fd, out_msg, MSG_LEN);
+    close(fd);
+    
+    X25519(key, private, public);
+    rv = aead_chacha20_poly1305_open(in_msg, &in_msg_len, 1024, key, TAG_LEN, nonce, NONCE_LEN, out_msg, MSG_LEN, NULL, 0);
+    printf("OPEN RV:%d ILEN:%lu OLEN:%d\n", rv, in_msg_len, MSG_LEN);
+    printf("MSG: %s\n", in_msg);
+}
\ No newline at end of file
-- 
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