1 files changed, 84 insertions, 0 deletions
diff --git a/test/i-128/test-tbc-decrypt.c b/test/i-128/test-tbc-decrypt.c
new file mode 100644
index 0000000..9bd6996
--- /dev/null
+++ b/test/i-128/test-tbc-decrypt.c
@@ -0,0 +1,84 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "cipher.h"
+
+#include "test-helpers.h"
+
+
+struct vector
+{
+    char *name;
+    uint8_t key[KEY_BYTES];
+    uint8_t tweak[TWEAK_BYTES];
+    uint8_t ciphertext[BLOCK_BYTES];
+    uint8_t message[BLOCK_BYTES];
+};
+
+typedef struct vector vector;
+
+
+/* [0]: LSB */
+const vector VECTORS[] = {
+    {
+        .name = "order",
+        .tweak = {
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17
+        },
+        .key = {
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
+        },
+        .ciphertext = {
+            0xf9, 0xe3, 0x95, 0x3c, 0x04, 0xf6, 0x2d, 0x9c,
+            0x2d, 0x54, 0x58, 0xc0, 0x1d, 0xcc, 0x8a, 0x25
+        },
+        .message = {
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+        }
+    },
+    {
+        .name = "random",
+        .tweak = {
+            0xa8, 0x43, 0xf3, 0x10, 0x81, 0x11, 0x1c, 0x84,
+            0xdf, 0xf8, 0x2e, 0xfa, 0x90, 0x90, 0x26, 0x21,
+            0x7d, 0x8d, 0x43, 0x12, 0x2a, 0xb3, 0xd2, 0x4d
+        },
+        .key = {
+            0xc1, 0x96, 0xc6, 0x0a, 0x02, 0x73, 0x91, 0x68,
+            0x7f, 0xf4, 0x23, 0x4d, 0x3d, 0xd5, 0xf9, 0x9b
+        },
+        .ciphertext = {
+            0xf4, 0x4a, 0x06, 0x30, 0x7d, 0xd2, 0xb2, 0x5a,
+            0xf9, 0xd2, 0xba, 0x6c, 0x41, 0xf4, 0x45, 0x7f
+        },
+        .message = {
+            0xbc, 0xd7, 0xf0, 0x29, 0x84, 0xb6, 0xc8, 0xf9,
+            0x9c, 0x9d, 0x1d, 0xbd, 0x0d, 0x30, 0x94, 0x0b
+        }
+    }
+};
+
+
+int main()
+{
+    int diff = 0;
+
+    for (const vector *v=VECTORS; v<ARRAY_END(VECTORS); v++)
+    {
+        uint8_t message[BLOCK_BYTES];
+        lilliput_tbc_decrypt(v->key, v->tweak, v->ciphertext, message);
+
+        if (memcmp(message, v->message, sizeof(message)) != 0)
+        {
+            REPORT_DIFFERENCE(v->name, "decrypted message");
+            diff++;
+        }
+    }
+
+    return diff;
+}