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Reduce code size in ccm

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-08-16 19:54:41 +01:00
parent 2aaf888e0b
commit f4efd19dd0
2 changed files with 5 additions and 7 deletions
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11
include/mbedtls/ccm.h
View file

@ -77,7 +77,8 @@ extern "C" {
typedef struct mbedtls_ccm_context {
unsigned char MBEDTLS_PRIVATE(y)[16]; /*!< The Y working buffer */
unsigned char MBEDTLS_PRIVATE(ctr)[16]; /*!< The counter buffer */
mbedtls_cipher_context_t MBEDTLS_PRIVATE(cipher_ctx); /*!< The cipher context used. */
int MBEDTLS_PRIVATE(state); /*!< Working value holding context's
state. Used for chunked data input */
size_t MBEDTLS_PRIVATE(plaintext_len); /*!< Total plaintext length */
size_t MBEDTLS_PRIVATE(add_len); /*!< Total authentication data length */
size_t MBEDTLS_PRIVATE(tag_len); /*!< Total tag length */
@ -87,15 +88,13 @@ typedef struct mbedtls_ccm_context {
and plaintext/ciphertext.
This variable is set to zero after
auth data input is finished. */
unsigned char MBEDTLS_PRIVATE(q); /*!< The Q working value */
unsigned char MBEDTLS_PRIVATE(mode); /*!< The operation to perform:
unsigned int MBEDTLS_PRIVATE(q); /*!< The Q working value */
unsigned int MBEDTLS_PRIVATE(mode); /*!< The operation to perform:
#MBEDTLS_CCM_ENCRYPT or
#MBEDTLS_CCM_DECRYPT or
#MBEDTLS_CCM_STAR_ENCRYPT or
#MBEDTLS_CCM_STAR_DECRYPT. */
int MBEDTLS_PRIVATE(state); /*!< Working value holding context's
state. Used for chunked data
input */
mbedtls_cipher_context_t MBEDTLS_PRIVATE(cipher_ctx); /*!< The cipher context used. */
}
mbedtls_ccm_context;

1
library/ccm.c
View file

@ -400,7 +400,6 @@ int mbedtls_ccm_update(mbedtls_ccm_context *ctx,
mbedtls_xor(ctx->y + offset, ctx->y + offset, local_output, use_len);
memcpy(output, local_output, use_len);
mbedtls_platform_zeroize(local_output, 16);
if (use_len + offset == 16 || ctx->processed == ctx->plaintext_len) {
if ((ret =