From afe36cebe612dff55cbe020d7c9b70168fc97f1e Mon Sep 17 00:00:00 2001
From: Manuel Thalmann <m@nuth.ch>
Date: Tue, 14 Nov 2023 11:04:48 +0100
Subject: [PATCH] Fix broken `expandKey` function
---
aes/aes.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/aes/aes.cpp b/aes/aes.cpp
index b6a25cc..10f8de7 100644
--- a/aes/aes.cpp
+++ b/aes/aes.cpp
@@ -142,7 +142,7 @@ void mixColumns(t_state s) {
// Taken from: https://www.brainkart.com/article/AES-Key-Expansion_8410/
void expandKey(uint8_t k[16], uint32_t ek[44]) {
for (uint8_t i = 0; i < 4; i++) {
- ek[i] = word(k[i], k[i + 1], k[i + 2], k[i + 3]);
+ ek[i] = word(k[i * 4], k[i * 4 + 1], k[i * 4 + 2], k[i * 4 + 3]);
}
for (uint8_t i = 4; i < 44; i++) {