altos/arm: Align data so that gcc 5.4 doesn't do byte-accesses. Add -Wcast-align

[fw/altos] / src / aes / ao_aes.c

diff --git a/src/aes/ao_aes.c b/src/aes/ao_aes.c
index a04174c6ec12b1bf9eec44b796bc6e57112dcdab..fd90c5bf3ee03fa0c3435db43e5a4d3fea043b31 100644 (file)
--- a/src/aes/ao_aes.c
+++ b/src/aes/ao_aes.c
@@ -359,10 +359,10 @@ void xrijndaelDecrypt(word32 block[], roundkey *rkk)
 #endif
 
 uint8_t ao_aes_mutex;
-static uint8_t key[16];
+static word32 key[16/4];
 static roundkey        rkk;
 
-static uint8_t iv[16];
+static word32 iv[16/4];
 
 void
 ao_aes_set_mode(enum ao_aes_mode mode)
@@ -389,10 +389,11 @@ ao_aes_run(__xdata uint8_t *in,
           __xdata uint8_t *out)
 {
        uint8_t i;
+       uint8_t *_iv = (uint8_t *) iv;
 
        for (i = 0; i < 16; i++)
-               iv[i] ^= in[i];
-       xrijndaelEncrypt((word32 *) iv, &rkk);
+               _iv[i] ^= in[i];
+       xrijndaelEncrypt(iv, &rkk);
        if (out)
                memcpy(out, iv, 16);
 }