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Refactor AES context to be shallow-copyable

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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>
This commit is contained in:
Werner Lewis 2022-05-30 12:00:21 +01:00 • committed by Werner Lewis
parent 07040bb179
commit dd76ef359d
7 changed files with 50 additions and 15 deletions
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2
include/mbedtls/aes.h
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@ -80,7 +80,7 @@ extern "C" {
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: