Refactor AES context to be shallow-copyable
Replace RK pointer in AES context with a buffer offset, to allow
shallow copying. Fixes #2147.
Signed-off-by: Werner Lewis <werner.lewis@arm.com>
diff --git a/include/mbedtls/aes.h b/include/mbedtls/aes.h
index 144bd89..d64d590 100644
--- a/include/mbedtls/aes.h
+++ b/include/mbedtls/aes.h
@@ -80,7 +80,7 @@
typedef struct mbedtls_aes_context
{
int MBEDTLS_PRIVATE(nr); /*!< The number of rounds. */
- uint32_t *MBEDTLS_PRIVATE(rk); /*!< AES round keys. */
+ size_t MBEDTLS_PRIVATE(rk_offset); /*!< Buffer offset for AES round keys. */
uint32_t MBEDTLS_PRIVATE(buf)[68]; /*!< Unaligned data buffer. This buffer can
hold 32 extra Bytes, which can be used for
one of the following purposes: