eden-emu/mbedtls
15
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #8716 from mschulz-at-hilscher/feature/gcm_largetable

Browse source 
Use large GCM tables
This commit is contained in:
Tom Cosgrove 2024-02-23 16:25:38 +00:00 • committed by GitHub
commit 817772a6ca
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
5 changed files with 256 additions and 111 deletions
Download patch file Download diff file Expand all files Collapse all files

28
include/mbedtls/gcm.h
View file

@ -46,6 +46,12 @@ extern "C" {
#if !defined(MBEDTLS_GCM_ALT)
#if defined(MBEDTLS_GCM_LARGE_TABLE)
#define MBEDTLS_GCM_HTABLE_SIZE 256
#else
#define MBEDTLS_GCM_HTABLE_SIZE 16
#endif
/**
* \brief The GCM context structure.
*/
@ -53,18 +59,18 @@ typedef struct mbedtls_gcm_context {
#if defined(MBEDTLS_BLOCK_CIPHER_C)
mbedtls_block_cipher_context_t MBEDTLS_PRIVATE(block_cipher_ctx); /*!< The cipher context used. */
#else
mbedtls_cipher_context_t MBEDTLS_PRIVATE(cipher_ctx); /*!< The cipher context used. */
mbedtls_cipher_context_t MBEDTLS_PRIVATE(cipher_ctx); /*!< The cipher context used. */
#endif
uint64_t MBEDTLS_PRIVATE(HL)[16]; /*!< Precalculated HTable low. */
uint64_t MBEDTLS_PRIVATE(HH)[16]; /*!< Precalculated HTable high. */
uint64_t MBEDTLS_PRIVATE(len); /*!< The total length of the encrypted data. */
uint64_t MBEDTLS_PRIVATE(add_len); /*!< The total length of the additional data. */
unsigned char MBEDTLS_PRIVATE(base_ectr)[16]; /*!< The first ECTR for tag. */
unsigned char MBEDTLS_PRIVATE(y)[16]; /*!< The Y working value. */
unsigned char MBEDTLS_PRIVATE(buf)[16]; /*!< The buf working value. */
int MBEDTLS_PRIVATE(mode); /*!< The operation to perform:
#MBEDTLS_GCM_ENCRYPT or
#MBEDTLS_GCM_DECRYPT. */
uint64_t MBEDTLS_PRIVATE(H)[MBEDTLS_GCM_HTABLE_SIZE][2]; /*!< Precalculated HTable. */
uint64_t MBEDTLS_PRIVATE(len); /*!< The total length of the encrypted data. */
uint64_t MBEDTLS_PRIVATE(add_len); /*!< The total length of the additional data. */
unsigned char MBEDTLS_PRIVATE(base_ectr)[16]; /*!< The first ECTR for tag. */
unsigned char MBEDTLS_PRIVATE(y)[16]; /*!< The Y working value. */
unsigned char MBEDTLS_PRIVATE(buf)[16]; /*!< The buf working value. */
unsigned char MBEDTLS_PRIVATE(mode); /*!< The operation to perform:
#MBEDTLS_GCM_ENCRYPT or
#MBEDTLS_GCM_DECRYPT. */
unsigned char MBEDTLS_PRIVATE(acceleration); /*!< The acceleration to use. */
}
mbedtls_gcm_context;

16
include/mbedtls/mbedtls_config.h
View file

@ -2800,6 +2800,22 @@
*/
#define MBEDTLS_GCM_C
/**
* \def MBEDTLS_GCM_LARGE_TABLE
*
* Enable large pre-computed tables for Galois/Counter Mode (GCM).
* Can significantly increase throughput on systems without GCM hardware
* acceleration (e.g., AESNI, AESCE).
*
* The mbedtls_gcm_context size will increase by 3840 bytes.
* The code size will increase by roughly 344 bytes.
*
* Module: library/gcm.c
*
* Requires: MBEDTLS_GCM_C
*/
//#define MBEDTLS_GCM_LARGE_TABLE
/**
* \def MBEDTLS_HKDF_C
*