1 files changed, 150 insertions, 0 deletions
diff --git a/lib/ed25519/test.c b/lib/ed25519/test.c
new file mode 100644
index 0000000..e2159a9
--- /dev/null
+++ b/lib/ed25519/test.c
@@ -0,0 +1,150 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+/* #define ED25519_DLL */
+#include "src/ed25519.h"
+
+#include "src/ge.h"
+#include "src/sc.h"
+
+
+int main() {
+    unsigned char public_key[32], private_key[64], seed[32], scalar[32];
+    unsigned char other_public_key[32], other_private_key[64];
+    unsigned char shared_secret[32], other_shared_secret[32];
+    unsigned char signature[64];
+
+    clock_t start;
+    clock_t end;
+    int i;
+
+    const unsigned char message[] = "Hello, world!";
+    const int message_len = strlen((char*) message);
+
+    /* create a random seed, and a keypair out of that seed */
+    ed25519_create_seed(seed);
+    ed25519_create_keypair(public_key, private_key, seed);
+
+    /* create signature on the message with the keypair */
+    ed25519_sign(signature, message, message_len, public_key, private_key);
+
+    /* verify the signature */
+    if (ed25519_verify(signature, message, message_len, public_key)) {
+        printf("valid signature\n");
+    } else {
+        printf("invalid signature\n");
+    }
+
+    /* create scalar and add it to the keypair */
+    ed25519_create_seed(scalar);
+    ed25519_add_scalar(public_key, private_key, scalar);
+
+    /* create signature with the new keypair */
+    ed25519_sign(signature, message, message_len, public_key, private_key);
+
+    /* verify the signature with the new keypair */
+    if (ed25519_verify(signature, message, message_len, public_key)) {
+        printf("valid signature\n");
+    } else {
+        printf("invalid signature\n");
+    }
+
+    /* make a slight adjustment and verify again */
+    signature[44] ^= 0x10;
+    if (ed25519_verify(signature, message, message_len, public_key)) {
+        printf("did not detect signature change\n");
+    } else {
+        printf("correctly detected signature change\n");
+    }
+
+    /* generate two keypairs for testing key exchange */
+    ed25519_create_seed(seed);
+    ed25519_create_keypair(public_key, private_key, seed);
+    ed25519_create_seed(seed);
+    ed25519_create_keypair(other_public_key, other_private_key, seed);
+
+    /* create two shared secrets - from both perspectives - and check if they're equal */
+    ed25519_key_exchange(shared_secret, other_public_key, private_key);
+    ed25519_key_exchange(other_shared_secret, public_key, other_private_key);
+
+    for (i = 0; i < 32; ++i) {
+        if (shared_secret[i] != other_shared_secret[i]) {
+            printf("key exchange was incorrect\n");
+            break;
+        }
+    }
+
+    if (i == 32) {
+        printf("key exchange was correct\n");
+    }
+
+    /* test performance */
+    printf("testing seed generation performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_create_seed(seed);
+    }
+    end = clock();
+
+    printf("%fus per seed\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+
+    printf("testing key generation performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_create_keypair(public_key, private_key, seed);
+    }
+    end = clock();
+
+    printf("%fus per keypair\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+    printf("testing sign performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_sign(signature, message, message_len, public_key, private_key);
+    }
+    end = clock();
+
+    printf("%fus per signature\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+    printf("testing verify performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_verify(signature, message, message_len, public_key);
+    }
+    end = clock();
+
+    printf("%fus per signature\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+    
+
+    printf("testing keypair scalar addition performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_add_scalar(public_key, private_key, scalar);
+    }
+    end = clock();
+
+    printf("%fus per keypair\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+    printf("testing public key scalar addition performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_add_scalar(public_key, NULL, scalar);
+    }
+    end = clock();
+
+    printf("%fus per key\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+    printf("testing key exchange performance: ");
+    start = clock();
+    for (i = 0; i < 10000; ++i) {
+        ed25519_key_exchange(shared_secret, other_public_key, private_key);
+    }
+    end = clock();
+
+    printf("%fus per shared secret\n", ((double) ((end - start) * 1000)) / CLOCKS_PER_SEC / i * 1000);
+
+    return 0;
+}