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Fix LMS and LMOTS coding style violations

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Signed-off-by: Raef Coles <raef.coles@arm.com>
This commit is contained in:
Raef Coles 2022-09-02 12:04:21 +01:00
parent 366d67d9af
commit 9b88ee5d5d
No known key found for this signature in database
GPG Key ID: 1AAF1B43DF2086F4
4 changed files with 77 additions and 70 deletions
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2
include/mbedtls/lms.h
View File

@ -344,7 +344,7 @@ int mbedtls_lms_export_public_key( mbedtls_lms_public_t *ctx, unsigned char *key
int mbedtls_lms_sign( mbedtls_lms_private_t *ctx,
int (*f_rng)(void *, unsigned char *, size_t),
void* p_rng, unsigned char *msg, unsigned int msg_size,
unsigned char *sig, size_t sig_size, size_t *sig_len);
unsigned char *sig, size_t sig_size, size_t *sig_len );
#endif /* MBEDTLS_LMS_PRIVATE */
#ifdef __cplusplus

79
library/lmots.c
View File

@ -68,30 +68,32 @@
/* Currently only defined for SHA256, 32 is the max hash output size */
#define MBEDTLS_LMOTS_C_RANDOM_VALUE_LEN_MAX (MBEDTLS_LMOTS_N_HASH_LEN_MAX)
#define DIGIT_MAX_VALUE ((1u << W_WINTERNITZ_PARAMETER) - 1u)
#define DIGIT_MAX_VALUE ((1u << W_WINTERNITZ_PARAMETER) - 1u)
#define D_CONST_LEN (2)
#define D_CONST_LEN (2)
static const unsigned char D_PUBLIC_CONSTANT_BYTES[D_CONST_LEN] = {0x80, 0x80};
static const unsigned char D_MESSAGE_CONSTANT_BYTES[D_CONST_LEN] = {0x81, 0x81};
void unsigned_int_to_network_bytes(unsigned int val, size_t len,
unsigned char *bytes)
void unsigned_int_to_network_bytes( unsigned int val, size_t len,
unsigned char *bytes )
{
size_t idx;
for (idx = 0; idx < len; idx++) {
bytes[idx] = (val >> ((len - 1 - idx) * 8)) & 0xFF;
for ( idx = 0; idx < len; idx++ )
{
bytes[idx] = ( val >> ( ( len - 1 - idx ) * 8 ) ) & 0xFF;
}
}
unsigned int network_bytes_to_unsigned_int(size_t len,
const unsigned char *bytes)
unsigned int network_bytes_to_unsigned_int( size_t len,
const unsigned char *bytes )
{
size_t idx;
unsigned int val = 0;
for (idx = 0; idx < len; idx++) {
val |= ((unsigned int)bytes[idx]) << (8 * (len - 1 - idx));
for ( idx = 0; idx < len; idx++ )
{
val |= ( ( unsigned int )bytes[idx] ) << (8 * ( len - 1 - idx ) );
}
return val;
@ -123,7 +125,7 @@ static int create_digit_array_with_checksum( const mbedtls_lmots_parameters_t *p
unsigned short checksum;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
op = psa_hash_operation_init();
op = psa_hash_operation_init( );
status = psa_hash_setup( &op, PSA_ALG_SHA_256 );
ret = mbedtls_lms_error_from_psa( status );
if ( ret != 0 )
@ -195,7 +197,7 @@ static int hash_digit_array( const mbedtls_lmots_parameters_t *params,
unsigned char tmp_hash[MBEDTLS_LMOTS_N_HASH_LEN_MAX];
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
op = psa_hash_operation_init();
op = psa_hash_operation_init( );
for ( i_digit_idx = 0;
i_digit_idx < MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT(params->type);
@ -211,7 +213,7 @@ static int hash_digit_array( const mbedtls_lmots_parameters_t *params,
j_hash_idx_max = hash_idx_max_values != NULL ?
hash_idx_max_values[i_digit_idx] : DIGIT_MAX_VALUE;
for ( j_hash_idx = (unsigned char)j_hash_idx_min;
for ( j_hash_idx = ( unsigned char )j_hash_idx_min;
j_hash_idx < j_hash_idx_max;
j_hash_idx++ )
{
@ -329,9 +331,10 @@ exit:
return( ret );
}
int mbedtls_lms_error_from_psa(psa_status_t status)
int mbedtls_lms_error_from_psa( psa_status_t status )
{
switch( status ) {
switch( status )
{
case PSA_SUCCESS:
return( 0 );
case PSA_ERROR_HARDWARE_FAILURE:
@ -393,7 +396,7 @@ int mbedtls_lmots_calculate_public_key_candidate( const mbedtls_lmots_parameters
size_t sig_size,
unsigned char *out,
size_t out_size,
size_t *out_len)
size_t *out_len )
{
unsigned char tmp_digit_array[MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT_MAX];
unsigned char y_hashed_digits[MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT_MAX][MBEDTLS_LMOTS_N_HASH_LEN_MAX];
@ -420,14 +423,14 @@ int mbedtls_lmots_calculate_public_key_candidate( const mbedtls_lmots_parameters
ret = hash_digit_array( params,
sig + MBEDTLS_LMOTS_SIG_SIGNATURE_OFFSET(params->type),
tmp_digit_array, NULL, (unsigned char *)y_hashed_digits );
tmp_digit_array, NULL, ( unsigned char * )y_hashed_digits );
if ( ret )
{
return ( ret );
}
ret = public_key_from_hashed_digit_array( params,
(unsigned char *)y_hashed_digits,
( unsigned char * )y_hashed_digits,
out );
if ( ret )
{
@ -459,8 +462,7 @@ int mbedtls_lmots_verify( mbedtls_lmots_public_t *ctx, const unsigned char *msg,
return( MBEDTLS_ERR_LMS_BAD_INPUT_DATA );
}
if( ctx->params.MBEDTLS_PRIVATE( type )
!= MBEDTLS_LMOTS_SHA256_N32_W8 )
if( ctx->params.type != MBEDTLS_LMOTS_SHA256_N32_W8 )
{
return( MBEDTLS_ERR_LMS_BAD_INPUT_DATA );
}
@ -475,7 +477,7 @@ int mbedtls_lmots_verify( mbedtls_lmots_public_t *ctx, const unsigned char *msg,
msg, msg_size, sig, sig_size,
Kc_public_key_candidate,
MBEDTLS_LMOTS_N_HASH_LEN(ctx->params.type),
NULL);
NULL );
if ( ret )
{
return( ret );
@ -522,7 +524,8 @@ int mbedtls_lmots_generate_private_key( mbedtls_lmots_private_t *ctx,
return( MBEDTLS_ERR_LMS_BAD_INPUT_DATA );
}
if ( type != MBEDTLS_LMOTS_SHA256_N32_W8 ) {
if ( type != MBEDTLS_LMOTS_SHA256_N32_W8 )
{
return( MBEDTLS_ERR_LMS_BAD_INPUT_DATA );
}
@ -534,9 +537,9 @@ int mbedtls_lmots_generate_private_key( mbedtls_lmots_private_t *ctx,
I_key_identifier,
sizeof( ctx->params.I_key_identifier ) );
unsigned_int_to_network_bytes(q_leaf_identifier,
MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
ctx->params.q_leaf_identifier );
unsigned_int_to_network_bytes( q_leaf_identifier,
MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
ctx->params.q_leaf_identifier );
unsigned_int_to_network_bytes( 0xFF, sizeof( const_bytes ), const_bytes );
@ -570,7 +573,7 @@ int mbedtls_lmots_generate_private_key( mbedtls_lmots_private_t *ctx,
if ( ret )
goto exit;
status = psa_hash_update( &op, const_bytes, sizeof( const_bytes) );
status = psa_hash_update( &op, const_bytes, sizeof( const_bytes ) );
ret = mbedtls_lms_error_from_psa( status );
if ( ret )
goto exit;
@ -604,7 +607,7 @@ exit:
}
int mbedtls_lmots_calculate_public_key( mbedtls_lmots_public_t *ctx,
mbedtls_lmots_private_t *priv_ctx)
mbedtls_lmots_private_t *priv_ctx )
{
unsigned char y_hashed_digits[MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT_MAX][MBEDTLS_LMOTS_N_HASH_LEN_MAX];
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@ -616,15 +619,15 @@ int mbedtls_lmots_calculate_public_key( mbedtls_lmots_public_t *ctx,
}
ret = hash_digit_array( &priv_ctx->params,
(unsigned char *)priv_ctx->private_key, NULL,
NULL, (unsigned char *)y_hashed_digits );
( unsigned char * )priv_ctx->private_key, NULL,
NULL, ( unsigned char * )y_hashed_digits );
if ( ret )
{
return( ret );
}
ret = public_key_from_hashed_digit_array( &priv_ctx->params,
(unsigned char *)y_hashed_digits,
( unsigned char * )y_hashed_digits,
ctx->public_key );
if ( ret )
{
@ -634,7 +637,7 @@ int mbedtls_lmots_calculate_public_key( mbedtls_lmots_public_t *ctx,
memcpy( &ctx->params, &priv_ctx->params,
sizeof( ctx->params ) );
ctx->MBEDTLS_PRIVATE(have_public_key = 1);
ctx->have_public_key = 1;
return( ret );
}
@ -662,9 +665,9 @@ int mbedtls_lmots_export_public_key( mbedtls_lmots_public_t *ctx,
ctx->params.I_key_identifier,
MBEDTLS_LMOTS_I_KEY_ID_LEN );
memcpy(key + MBEDTLS_LMOTS_PUBLIC_KEY_Q_LEAF_ID_OFFSET,
ctx->params.q_leaf_identifier,
MBEDTLS_LMOTS_Q_LEAF_ID_LEN);
memcpy( key + MBEDTLS_LMOTS_PUBLIC_KEY_Q_LEAF_ID_OFFSET,
ctx->params.q_leaf_identifier,
MBEDTLS_LMOTS_Q_LEAF_ID_LEN );
memcpy( key + MBEDTLS_LMOTS_PUBLIC_KEY_KEY_HASH_OFFSET, ctx->public_key,
MBEDTLS_LMOTS_N_HASH_LEN(ctx->params.type) );
@ -726,8 +729,8 @@ int mbedtls_lmots_sign( mbedtls_lmots_private_t *ctx,
return( ret );
}
ret = hash_digit_array( &ctx->params, (unsigned char *)ctx->private_key,
NULL, tmp_digit_array, (unsigned char *)tmp_sig );
ret = hash_digit_array( &ctx->params, ( unsigned char * )ctx->private_key,
NULL, tmp_digit_array, ( unsigned char * )tmp_sig );
if ( ret )
{
return( ret );
@ -741,8 +744,8 @@ int mbedtls_lmots_sign( mbedtls_lmots_private_t *ctx,
* key can't be reused.
*/
ctx->have_private_key = 0;
mbedtls_platform_zeroize(ctx->private_key,
sizeof(ctx->private_key));
mbedtls_platform_zeroize( ctx->private_key,
sizeof( ctx->private_key ) );
memcpy( sig + MBEDTLS_LMOTS_SIG_C_RANDOM_OFFSET, tmp_c_random,
MBEDTLS_LMOTS_C_RANDOM_VALUE_LEN(ctx->params.type) );

14
library/lmots.h
View File

@ -145,8 +145,8 @@ typedef struct {
*
* \return The corresponding LMS error code.
*/
void unsigned_int_to_network_bytes(unsigned int val, size_t len,
unsigned char *bytes);
void unsigned_int_to_network_bytes( unsigned int val, size_t len,
unsigned char *bytes );
/**
* \brief This function converts a network-byte-order
@ -157,8 +157,8 @@ void unsigned_int_to_network_bytes(unsigned int val, size_t len,
*
* \return The corresponding LMS error code.
*/
unsigned int network_bytes_to_unsigned_int(size_t len,
const unsigned char *bytes);
unsigned int network_bytes_to_unsigned_int( size_t len,
const unsigned char *bytes );
/**
* \brief This function converts a \ref psa_status_t to a
@ -168,7 +168,7 @@ unsigned int network_bytes_to_unsigned_int(size_t len,
*
* \return The corresponding LMS error code.
*/
int mbedtls_lms_error_from_psa(psa_status_t status);
int mbedtls_lms_error_from_psa( psa_status_t status );
/**
@ -240,7 +240,7 @@ int mbedtls_lmots_calculate_public_key_candidate( const mbedtls_lmots_parameters
size_t sig_size,
unsigned char *out,
size_t out_size,
size_t *out_len);
size_t *out_len );
/**
* \brief This function verifies a LMOTS signature, using a
@ -333,7 +333,7 @@ int mbedtls_lmots_generate_private_key( mbedtls_lmots_private_t *ctx,
* \return A non-zero error code on failure.
*/
int mbedtls_lmots_calculate_public_key( mbedtls_lmots_public_t *ctx,
mbedtls_lmots_private_t *priv_ctx);
mbedtls_lmots_private_t *priv_ctx );
/**

52
library/lms.c
View File

@ -123,7 +123,7 @@ static int create_merkle_leaf_value( const mbedtls_lms_parameters_t *params,
goto exit;
status = psa_hash_finish( &op, out, MBEDTLS_LMS_M_NODE_BYTES(params->type),
&output_hash_len);
&output_hash_len );
ret = mbedtls_lms_error_from_psa( status );
if( ret )
goto exit;
@ -182,7 +182,7 @@ static int create_merkle_internal_value( const mbedtls_lms_parameters_t *params,
goto exit;
ret = psa_hash_finish( &op, out, MBEDTLS_LMS_M_NODE_BYTES(params->type),
&output_hash_len);
&output_hash_len );
ret = mbedtls_lms_error_from_psa( status );
if( ret )
goto exit;
@ -279,7 +279,7 @@ int mbedtls_lms_verify( const mbedtls_lms_public_t *ctx,
}
if( network_bytes_to_unsigned_int( MBEDTLS_LMOTS_TYPE_LEN,
sig + MBEDTLS_LMS_SIG_OTS_SIG_OFFSET + MBEDTLS_LMOTS_SIG_TYPE_OFFSET)
sig + MBEDTLS_LMS_SIG_OTS_SIG_OFFSET + MBEDTLS_LMOTS_SIG_TYPE_OFFSET )
!= MBEDTLS_LMOTS_SHA256_N32_W8 )
{
return( MBEDTLS_ERR_LMS_VERIFY_FAILED );
@ -301,9 +301,9 @@ int mbedtls_lms_verify( const mbedtls_lms_public_t *ctx,
return( MBEDTLS_ERR_LMS_VERIFY_FAILED );
}
memcpy(ots_params.I_key_identifier,
ctx->params.I_key_identifier,
MBEDTLS_LMOTS_I_KEY_ID_LEN);
memcpy( ots_params.I_key_identifier,
ctx->params.I_key_identifier,
MBEDTLS_LMOTS_I_KEY_ID_LEN );
unsigned_int_to_network_bytes( q_leaf_identifier,
MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
ots_params.q_leaf_identifier );
@ -312,7 +312,7 @@ int mbedtls_lms_verify( const mbedtls_lms_public_t *ctx,
ret = mbedtls_lmots_calculate_public_key_candidate( &ots_params, msg,
msg_size, sig + MBEDTLS_LMS_SIG_OTS_SIG_OFFSET,
MBEDTLS_LMOTS_SIG_LEN(ctx->params.otstype), Kc_candidate_ots_pub_key,
sizeof(Kc_candidate_ots_pub_key), NULL );
sizeof( Kc_candidate_ots_pub_key ), NULL );
if( ret )
{
return( ret );
@ -393,8 +393,8 @@ static int calculate_merkle_tree( mbedtls_lms_private_t *ctx,
r_node_idx-- )
{
ret = create_merkle_internal_value( &ctx->params,
&tree[(r_node_idx * 2) * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type)],
&tree[(r_node_idx * 2 + 1) * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type)],
&tree[( r_node_idx * 2 ) * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type)],
&tree[( r_node_idx * 2 + 1 ) * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type)],
r_node_idx,
&tree[r_node_idx * MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type)] );
if( ret )
@ -416,7 +416,7 @@ static int get_merkle_path( mbedtls_lms_private_t *ctx,
unsigned int height;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
ret = calculate_merkle_tree( ctx, (unsigned char *)tree);
ret = calculate_merkle_tree( ctx, ( unsigned char * )tree );
if( ret )
{
return( ret );
@ -496,7 +496,7 @@ int mbedtls_lms_generate_private_key( mbedtls_lms_private_t *ctx,
MBEDTLS_LMOTS_I_KEY_ID_LEN );
ctx->ots_private_keys = mbedtls_calloc( MERKLE_TREE_LEAF_NODE_AM(ctx->params.type),
sizeof( mbedtls_lmots_private_t));
sizeof( mbedtls_lmots_private_t ) );
if( ctx->ots_private_keys == NULL )
{
ret = MBEDTLS_ERR_LMS_ALLOC_FAILED;
@ -504,7 +504,7 @@ int mbedtls_lms_generate_private_key( mbedtls_lms_private_t *ctx,
}
ctx->ots_public_keys = mbedtls_calloc( MERKLE_TREE_LEAF_NODE_AM(ctx->params.type),
sizeof( mbedtls_lmots_public_t));
sizeof( mbedtls_lmots_public_t ) );
if( ctx->ots_public_keys == NULL )
{
ret = MBEDTLS_ERR_LMS_ALLOC_FAILED;
@ -524,12 +524,12 @@ int mbedtls_lms_generate_private_key( mbedtls_lms_private_t *ctx,
otstype,
ctx->params.I_key_identifier,
idx, seed, seed_size );
if( ret)
if( ret )
goto exit;
ret = mbedtls_lmots_calculate_public_key( &ctx->ots_public_keys[idx],
&ctx->ots_private_keys[idx] );
if( ret)
if( ret )
goto exit;
}
@ -539,7 +539,8 @@ int mbedtls_lms_generate_private_key( mbedtls_lms_private_t *ctx,
exit:
if( ret )
{
for ( free_idx = 0; free_idx < idx; free_idx++ ) {
for ( free_idx = 0; free_idx < idx; free_idx++ )
{
mbedtls_lmots_free_private( &ctx->ots_private_keys[free_idx] );
mbedtls_lmots_free_public( &ctx->ots_public_keys[free_idx] );
}
@ -558,7 +559,7 @@ int mbedtls_lms_calculate_public_key( mbedtls_lms_public_t *ctx,
unsigned char tree[MERKLE_TREE_NODE_AM_MAX][MBEDTLS_LMS_M_NODE_BYTES_MAX];
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( ! priv_ctx->MBEDTLS_PRIVATE( have_private_key ) )
if( ! priv_ctx->have_private_key )
{
return( MBEDTLS_ERR_LMS_BAD_INPUT_DATA );
}
@ -576,9 +577,9 @@ int mbedtls_lms_calculate_public_key( mbedtls_lms_public_t *ctx,
}
memcpy( &ctx->params, &priv_ctx->params,
sizeof(mbedtls_lmots_parameters_t) );
sizeof( mbedtls_lmots_parameters_t ) );
ret = calculate_merkle_tree( priv_ctx, (unsigned char *)tree);
ret = calculate_merkle_tree( priv_ctx, ( unsigned char * )tree );
if( ret )
{
return( ret );
@ -586,7 +587,7 @@ int mbedtls_lms_calculate_public_key( mbedtls_lms_public_t *ctx,
/* Root node is always at position 1, due to 1-based indexing */
memcpy( ctx->T_1_pub_key, &tree[1],
MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type));
MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type) );
ctx->have_public_key = 1;
@ -598,7 +599,8 @@ int mbedtls_lms_export_public_key( mbedtls_lms_public_t *ctx,
unsigned char *key,
size_t key_size, size_t *key_len )
{
if( key_size < MBEDTLS_LMS_PUBLIC_KEY_LEN(ctx->params.type) ) {
if( key_size < MBEDTLS_LMS_PUBLIC_KEY_LEN(ctx->params.type) )
{
return( MBEDTLS_ERR_LMS_BUFFER_TOO_SMALL );
}
@ -619,7 +621,8 @@ int mbedtls_lms_export_public_key( mbedtls_lms_public_t *ctx,
ctx->T_1_pub_key,
MBEDTLS_LMS_M_NODE_BYTES(ctx->params.type) );
if( key_len != NULL ) {
if( key_len != NULL )
{
*key_len = MBEDTLS_LMS_PUBLIC_KEY_LEN(ctx->params.type);
}
@ -630,7 +633,7 @@ int mbedtls_lms_export_public_key( mbedtls_lms_public_t *ctx,
int mbedtls_lms_sign( mbedtls_lms_private_t *ctx,
int (*f_rng)(void *, unsigned char *, size_t),
void* p_rng, unsigned char *msg, unsigned int msg_size,
unsigned char *sig, size_t sig_size, size_t *sig_len)
unsigned char *sig, size_t sig_size, size_t *sig_len )
{
uint32_t q_leaf_identifier;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
@ -681,7 +684,7 @@ int mbedtls_lms_sign( mbedtls_lms_private_t *ctx,
unsigned_int_to_network_bytes( ctx->params.type, MBEDTLS_LMS_TYPE_LEN,
sig + MBEDTLS_LMS_SIG_TYPE_OFFSET(ctx->params.otstype) );
unsigned_int_to_network_bytes( q_leaf_identifier, MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
sig + MBEDTLS_LMS_SIG_Q_LEAF_ID_OFFSET);
sig + MBEDTLS_LMS_SIG_Q_LEAF_ID_OFFSET );
ret = get_merkle_path( ctx,
MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) + q_leaf_identifier,
@ -691,7 +694,8 @@ int mbedtls_lms_sign( mbedtls_lms_private_t *ctx,
return( ret );
}
if( sig_len != NULL ) {
if( sig_len != NULL )
{
*sig_len = MBEDTLS_LMS_SIG_LEN(ctx->params.type, ctx->params.otstype);
}