commit d48f7e90bb30d605525a9d2c508012acd5cf7b64
author Raef Coles <raef.coles@arm.com> Mon Oct 10 13:10:07 2022 +0100
committer Raef Coles <raef.coles@arm.com> Thu Oct 13 14:29:32 2022 +0100
tree fc37d258429c81ee56483d0ba2ff13d8b59cd2ab
parent 1fb2f32ef5485962e0334dbbb397b3114a18dba6

Allocate LMS C_RANDOM_VALUE as hash size

Signed-off-by: Raef Coles <raef.coles@arm.com>

library/lmots.c

diff --git a/library/lmots.c b/library/lmots.c
index bb4326e..1639587 100644
--- a/library/lmots.c
+++ b/library/lmots.c
@@ -60,9 +60,6 @@
 #define J_HASH_IDX_LEN         (1)
 #define D_CONST_LEN            (2)
 
-/* Currently only defined for SHA256, 32 is the max hash output size */
-#define C_RANDOM_VALUE_LEN_MAX (MBEDTLS_LMOTS_N_HASH_LEN_MAX)
-
 #define DIGIT_MAX_VALUE        ((1u << W_WINTERNITZ_PARAMETER) - 1u)
 
 #define D_CONST_LEN            (2)
@@ -731,7 +728,7 @@
      * key.
      */
     unsigned char tmp_sig[MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT_MAX][MBEDTLS_LMOTS_N_HASH_LEN_MAX];
-    unsigned char tmp_c_random[C_RANDOM_VALUE_LEN_MAX];
+    unsigned char tmp_c_random[MBEDTLS_LMOTS_N_HASH_LEN_MAX];
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
     if( msg == NULL && msg_size != 0 )