fix gcm win

awslabs · Jun 17, 2024 · e2b0fe8 · e2b0fe8
1 parent 4354880
commit e2b0fe8
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Showing 2 changed files with 3 additions and 4 deletions.
diff --git a/builder.json b/builder.json
@@ -15,8 +15,7 @@
         "linux": {
             "upstream": [
                 {
-                    "name": "aws-lc",
-                    "revision": "97ee225a8b302fc58da6faad3046e1534c6230d7"
+                    "name": "aws-lc"
                 }
             ]
         },

diff --git a/source/windows/bcrypt_aes.c b/source/windows/bcrypt_aes.c
@@ -590,7 +590,7 @@ static int s_aes_gcm_encrypt(
        wait til next time or for the finalize call. */
     if (working_buffer.len > AWS_AES_256_CIPHER_BLOCK_SIZE) {
         size_t offset = working_buffer.len % AWS_AES_256_CIPHER_BLOCK_SIZE;
-        size_t seek_to = working_buffer.len - (AWS_AES_256_CIPHER_BLOCK_SIZE + offset);
+        size_t seek_to = working_buffer.len - offset;
         struct aws_byte_cursor working_buf_cur = aws_byte_cursor_from_buf(&working_buffer);
         struct aws_byte_cursor working_slice = aws_byte_cursor_advance(&working_buf_cur, seek_to);
         /* this is just here to make it obvious. The previous line advanced working_buf_cur to where the
@@ -644,7 +644,7 @@ static int s_aes_gcm_decrypt(
        wait til next time or for the finalize call. */
     if (working_buffer.len > AWS_AES_256_CIPHER_BLOCK_SIZE) {
         size_t offset = working_buffer.len % AWS_AES_256_CIPHER_BLOCK_SIZE;
-        size_t seek_to = working_buffer.len - (AWS_AES_256_CIPHER_BLOCK_SIZE + offset);
+        size_t seek_to = working_buffer.len - offset;
         struct aws_byte_cursor working_buf_cur = aws_byte_cursor_from_buf(&working_buffer);
         struct aws_byte_cursor working_slice = aws_byte_cursor_advance(&working_buf_cur, seek_to);
         /* this is just here to make it obvious. The previous line advanced working_buf_cur to where the