[Cryptech-Commits] [core/cipher/aes] 18/20: Reading AES result will be zero when ready is not set.

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sra at hactrn.net pushed a commit to branch aes_speed
in repository core/cipher/aes.

commit 190bdf4f5e7a2bda7bbbe9703a1b08eb8905f1ab
Author: Joachim Strömbergson <joachim at secworks.se>
AuthorDate: Tue Oct 2 15:10:16 2018 +0200

    Reading AES result will be zero when ready is not set.
---
 src/rtl/aes.v | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/rtl/aes.v b/src/rtl/aes.v
index ddee8f0..48a7735 100644
--- a/src/rtl/aes.v
+++ b/src/rtl/aes.v
@@ -256,7 +256,8 @@ module aes(
               endcase // case (address)
 
               if ((address >= ADDR_RESULT0) && (address <= ADDR_RESULT3))
-                tmp_read_data = core_result[(3 - (address - ADDR_RESULT0)) * 32 +: 32];
+                if (core_ready)
+                  tmp_read_data = core_result[(3 - (address - ADDR_RESULT0)) * 32 +: 32];
             end
         end
     end // addr_decoder