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bootutil: Fix AES and SHA-256 contexts not zeroized (mbedTLS) #2060

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merged 1 commit into from
Sep 12, 2024
Merged

bootutil: Fix AES and SHA-256 contexts not zeroized (mbedTLS) #2060

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4 changes: 1 addition & 3 deletions boot/bootutil/include/bootutil/crypto/aes_ctr.h
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Original file line number Diff line number Diff line change
Expand Up @@ -53,9 +53,7 @@ static inline void bootutil_aes_ctr_init(bootutil_aes_ctr_context *ctx)

static inline void bootutil_aes_ctr_drop(bootutil_aes_ctr_context *ctx)
{
/* XXX: config defines MBEDTLS_PLATFORM_NO_STD_FUNCTIONS so no need to free */
/* (void)mbedtls_aes_free(ctx); */
(void)ctx;
mbedtls_aes_free(ctx);
}

static inline int bootutil_aes_ctr_set_key(bootutil_aes_ctr_context *ctx, const uint8_t *k)
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4 changes: 1 addition & 3 deletions boot/bootutil/include/bootutil/crypto/aes_kw.h
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Expand Up @@ -45,9 +45,7 @@ static inline void bootutil_aes_kw_init(bootutil_aes_kw_context *ctx)

static inline void bootutil_aes_kw_drop(bootutil_aes_kw_context *ctx)
{
/* XXX: config defines MBEDTLS_PLATFORM_NO_STD_FUNCTIONS so no need to free */
/* (void)mbedtls_aes_free(ctx); */
(void)ctx;
mbedtls_nist_kw_free(ctx);
}

static inline int bootutil_aes_kw_set_unwrap_key(bootutil_aes_kw_context *ctx, const uint8_t *k, uint32_t klen)
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4 changes: 1 addition & 3 deletions boot/bootutil/include/bootutil/crypto/sha.h
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Expand Up @@ -126,9 +126,7 @@ static inline int bootutil_sha_init(bootutil_sha_context *ctx)

static inline int bootutil_sha_drop(bootutil_sha_context *ctx)
{
/* XXX: config defines MBEDTLS_PLATFORM_NO_STD_FUNCTIONS so no need to free */
/* (void)mbedtls_sha256_free(ctx); */
(void)ctx;
mbedtls_sha256_free(ctx);
return 0;
}

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