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

Update LMS API to support multiple parameter sets

Browse source 
Parameterise macros to allow variation of sizes

Signed-off-by: Raef Coles <raef.coles@arm.com>
This commit is contained in:
Raef Coles 2022-09-01 16:06:35 +01:00
parent ab4f87413a
commit e9479a0264
No known key found for this signature in database
GPG key ID: 1AAF1B43DF2086F4
6 changed files with 226 additions and 161 deletions
Download patch file Download diff file Expand all files Collapse all files

27
include/mbedtls/lms.h
View file

@ -40,15 +40,28 @@
#define MBEDTLS_ERR_LMS_ALLOC_FAILED -0x0017 /**< LMS failed to allocate space for a private key */
#define MBEDTLS_ERR_LMS_BUFFER_TOO_SMALL -0x0019 /**< Input/output buffer is too small to contain requited data */
#define MBEDTLS_LMS_M_NODE_BYTES (32) /* The length of a hash output, 32 for SHA256 */
#define MBEDTLS_LMS_TYPE_LEN (4)
#define MBEDTLS_LMS_H_TREE_HEIGHT (10u)
#define MBEDTLS_LMS_H_TREE_HEIGHT(type) (type == MBEDTLS_LMS_SHA256_M32_H10 ? 10u : 0)
#define MBEDTLS_LMS_SIG_LEN (MBEDTLS_LMOTS_Q_LEAF_ID_LEN + MBEDTLS_LMOTS_SIG_LEN + \
MBEDTLS_LMS_TYPE_LEN + MBEDTLS_LMS_H_TREE_HEIGHT * MBEDTLS_LMS_M_NODE_BYTES)
/* The length of a hash output, Currently only imlemented for SHA256.
* Max is 32 bytes.
*/
/* The length of a hash output, Currently only imlemented for SHA256.
* Max is 32 bytes.
*/
#define MBEDTLS_LMS_M_NODE_BYTES(type) (type == MBEDTLS_LMS_SHA256_M32_H10 ? 32 : 0)
#define MBEDTLS_LMS_M_NODE_BYTES_MAX 32
#define MBEDTLS_LMS_PUBLIC_KEY_LEN (MBEDTLS_LMS_TYPE_LEN + MBEDTLS_LMOTS_TYPE_LEN + \
MBEDTLS_LMOTS_I_KEY_ID_LEN + MBEDTLS_LMS_M_NODE_BYTES)
#define MBEDTLS_LMS_SIG_LEN(type, otstype) (MBEDTLS_LMOTS_Q_LEAF_ID_LEN + \
MBEDTLS_LMOTS_SIG_LEN(otstype) + \
MBEDTLS_LMS_TYPE_LEN + \
(MBEDTLS_LMS_H_TREE_HEIGHT(type) * \
MBEDTLS_LMS_M_NODE_BYTES(type)))
#define MBEDTLS_LMS_PUBLIC_KEY_LEN(type) (MBEDTLS_LMS_TYPE_LEN + \
MBEDTLS_LMOTS_TYPE_LEN + \
MBEDTLS_LMOTS_I_KEY_ID_LEN + \
MBEDTLS_LMS_M_NODE_BYTES(type))
#ifdef __cplusplus
@ -99,7 +112,7 @@ typedef struct {
*/
typedef struct {
mbedtls_lms_parameters_t MBEDTLS_PRIVATE(params);
unsigned char MBEDTLS_PRIVATE(T_1_pub_key)[MBEDTLS_LMS_M_NODE_BYTES]; /*!< The public key, in
unsigned char MBEDTLS_PRIVATE(T_1_pub_key)[MBEDTLS_LMS_M_NODE_BYTES_MAX]; /*!< The public key, in
the form of the merkle tree root node. */
unsigned char MBEDTLS_PRIVATE(have_public_key); /*!< Whether the context contains a public key.
Boolean values only. */