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Define PRNG seed as a type.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 2534

--- a/src/Makefile.am

+++ b/src/Makefile.am

@@ -132,6 +132,7 @@

 # source files needed for FEATURE_MULTIPLAYER

 FEATURE_MULTIPLAYER_SOURCE_FILES=          \

+aes_prng.c           aes_prng.h            \

 net_client.c         net_client.h          \

 net_common.c         net_common.h          \

 net_dedicated.c      net_dedicated.h       \

--- a/src/aes_prng.c

+++ b/src/aes_prng.c

@@ -70,6 +70,7 @@

 #include <stdlib.h>

 #include <string.h> /* for memcmp() */

+#include "aes_prng.h"

 #include "doomtype.h"

 #include "i_system.h"

@@ -948,7 +949,7 @@

 // Initialize Pseudo-RNG using the specified 128-bit key.

-void PRNG_Start(byte *key)

+void PRNG_Start(prng_seed_t key)

 {

     char *errormsg;

@@ -959,7 +960,7 @@

         I_Error("Failed to initialize PRNG: %s", errormsg);

     }

-    AES_SetKey(&prng_context, key, 128 / 8);

+    AES_SetKey(&prng_context, key, sizeof(prng_seed_t));

     prng_value_index = 4;

     prng_input_counter = 0;

     prng_enabled = true;

--- a/src/aes_prng.h

+++ b/src/aes_prng.h

@@ -28,7 +28,11 @@

 #include "doomtype.h"

-void PRNG_Start(byte *key);

+// Nonce value used as random seed for secure demos.

+

+typedef byte prng_seed_t[16];

+

+void PRNG_Start(prng_seed_t seed);

 void PRNG_Stop(void);

 unsigned int PRNG_Random(void);