RIOT/pkg/openwsn/patches/0015-drivers-common-crypto-fix-mismatching-function-signa.patch

From 6288db9eff3db6bac6c4074fa946342dd64c7634 Mon Sep 17 00:00:00 2001
From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Date: Thu, 5 May 2022 10:44:46 +0200
Subject: [PATCH] drivers/common/crypto: fix mismatching function signatures

This allows OpenWSN again to be compiled with newer versions of GCC,
which in `master` fails with:

```
"make" -C /home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto -f /home/maribu/Repos/software/RIOT/Makefile.base MODULE=openwsn_crypto
/home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.c:49:30: error: argument 1 of type 'uint8_t[16]' {aka 'unsigned char[16]'} with mismatched bound [-Werror=array-parameter=]
   49 | owerror_t aes128_enc(uint8_t buffer[16], uint8_t key[16]) {
      |                      ~~~~~~~~^~~~~~~~~~
In file included from /home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.c:12:
/home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.h:22:31: note: previously declared as 'uint8_t *' {aka 'unsigned char *'}
   22 | owerror_t aes128_enc(uint8_t *buffer, uint8_t *key);
      |                      ~~~~~~~~~^~~~~~
/home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.c:49:50: error: argument 2 of type 'uint8_t[16]' {aka 'unsigned char[16]'} with mismatched bound [-Werror=array-parameter=]
   49 | owerror_t aes128_enc(uint8_t buffer[16], uint8_t key[16]) {
      |                                          ~~~~~~~~^~~~~~~
In file included from /home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.c:12:
/home/maribu/Repos/software/RIOT/build/pkg/openwsn/drivers/common/crypto/aes128.h:22:48: note: previously declared as 'uint8_t *' {aka 'unsigned char *'}
   22 | owerror_t aes128_enc(uint8_t *buffer, uint8_t *key);
      |                                       ~~~~~~~~~^~~
cc1: all warnings being treated as errors
```
---
 drivers/common/crypto/aes128.c | 2 +-
 drivers/common/crypto/hkdf.c   | 2 +-
 drivers/common/crypto/hmac.c   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/common/crypto/aes128.c b/drivers/common/crypto/aes128.c
index c74da586..16674092 100644
--- a/drivers/common/crypto/aes128.c
+++ b/drivers/common/crypto/aes128.c
@@ -46,7 +46,7 @@ void aes_enc(unsigned char *state, unsigned char *expandedKey);
 
 //=========================== public ==========================================
 
-owerror_t aes128_enc(uint8_t buffer[16], uint8_t key[16]) {
+owerror_t aes128_enc(uint8_t *buffer, uint8_t *key) {
     uint8_t expandedKey[176];
 
     expand_key(expandedKey, key);       // expand the key into 176 bytes
diff --git a/drivers/common/crypto/hkdf.c b/drivers/common/crypto/hkdf.c
index bd12ef2e..e8d33b3b 100644
--- a/drivers/common/crypto/hkdf.c
+++ b/drivers/common/crypto/hkdf.c
@@ -315,7 +315,7 @@ int hkdfFinalBits(HKDFContext *context, uint8_t ikm_bits,
 int hkdfResult(HKDFContext *context,
                uint8_t prk[USHAMaxHashSize],
                const unsigned char *info, int info_len,
-               uint8_t okm[ ], int okm_len)
+               uint8_t okm[USHAMaxHashSize], int okm_len)
 {
   uint8_t prkbuf[USHAMaxHashSize];
   int ret;
diff --git a/drivers/common/crypto/hmac.c b/drivers/common/crypto/hmac.c
index b09c50e5..f0a689db 100644
--- a/drivers/common/crypto/hmac.c
+++ b/drivers/common/crypto/hmac.c
@@ -218,7 +218,7 @@ int hmacFinalBits(HMACContext *context,
  *   sha Error Code.
  *
  */
-int hmacResult(HMACContext *context, uint8_t *digest)
+int hmacResult(HMACContext *context, uint8_t digest[USHAMaxHashSize])
 {
   int ret;
   if (!context) return shaNull;
-- 
2.36.0