commit ee62fceadec33a5952961377a0090e321f39a897
author Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl> Wed Oct 11 16:36:24 2023 +0200
committer Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl> Wed Oct 11 16:36:24 2023 +0200
tree f0aca04c757b0efd6484795db1e1fe536ea4e152
parent 1ec69067fa1351427f904362c1221b31538c8b57

Rename local variable in aes.c

This changes local variable name RCON to round_constants.

RCON being definition in xc32 compiler headers for some PIC32 register.
Without this change, mynewt project for PIC32 platform fails to build due to
macro redefinition.

This does not changes behavior of library in any way.

Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>

library/aes.c

diff --git a/library/aes.c b/library/aes.c
index 0a7b26c..f1a5a44 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -360,7 +360,7 @@
 /*
  * Round constants
  */
-static const uint32_t RCON[10] =
+static const uint32_t round_constants[10] =
 {
     0x00000001, 0x00000002, 0x00000004, 0x00000008,
     0x00000010, 0x00000020, 0x00000040, 0x00000080,
@@ -407,7 +407,7 @@
 /*
  * Round constants
  */
-static uint32_t RCON[10];
+static uint32_t round_constants[10];
 
 /*
  * Tables generation code
@@ -438,7 +438,7 @@
      * calculate the round constants
      */
     for (i = 0, x = 1; i < 10; i++) {
-        RCON[i] = x;
+        round_constants[i] = x;
         x = XTIME(x);
     }
 
@@ -666,7 +666,7 @@
         case 10:
 
             for (unsigned int i = 0; i < 10; i++, RK += 4) {
-                RK[4]  = RK[0] ^ RCON[i] ^
+                RK[4]  = RK[0] ^ round_constants[i] ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[3])]) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[3])] <<  8) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[3])] << 16) ^
@@ -682,7 +682,7 @@
         case 12:
 
             for (unsigned int i = 0; i < 8; i++, RK += 6) {
-                RK[6]  = RK[0] ^ RCON[i] ^
+                RK[6]  = RK[0] ^ round_constants[i] ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[5])]) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[5])] <<  8) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[5])] << 16) ^
@@ -699,7 +699,7 @@
         case 14:
 
             for (unsigned int i = 0; i < 7; i++, RK += 8) {
-                RK[8]  = RK[0] ^ RCON[i] ^
+                RK[8]  = RK[0] ^ round_constants[i] ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_1(RK[7])]) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_2(RK[7])] <<  8) ^
                          ((uint32_t) FSb[MBEDTLS_BYTE_3(RK[7])] << 16) ^