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Test truncated MAC and AEAD algorithms

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For MAC and AEAD algorithms, test the algorithm truncated to certain
lengths (1 and 63 bytes).
This commit is contained in:
Gilles Peskine 2018-10-19 11:30:26 +02:00 committed by Darryl Green
parent f96ed6615c
commit 434899fccd
2 changed files with 37 additions and 23 deletions
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42
include/psa/crypto_values.h
View File

@ -766,7 +766,7 @@
* algorithm is considered identical to the untruncated algorithm * algorithm is considered identical to the untruncated algorithm
* for policy comparison purposes. * for policy comparison purposes.
* *
* \param alg A MAC algorithm identifier (value of type * \param mac_alg A MAC algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg) * #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg)
* is true). This may be a truncated or untruncated * is true). This may be a truncated or untruncated
* MAC algorithm. * MAC algorithm.
@ -782,14 +782,14 @@
* MAC algorithm or if \p mac_length is too small or * MAC algorithm or if \p mac_length is too small or
* too large for the specified MAC algorithm. * too large for the specified MAC algorithm.
*/ */
#define PSA_ALG_TRUNCATED_MAC(alg, mac_length) \ #define PSA_ALG_TRUNCATED_MAC(mac_alg, mac_length) \
(((alg) & ~PSA_ALG_MAC_TRUNCATION_MASK) | \ (((mac_alg) & ~PSA_ALG_MAC_TRUNCATION_MASK) | \
((mac_length) << PSA_MAC_TRUNCATION_OFFSET & PSA_ALG_MAC_TRUNCATION_MASK)) ((mac_length) << PSA_MAC_TRUNCATION_OFFSET & PSA_ALG_MAC_TRUNCATION_MASK))
/** Macro to build the base MAC algorithm corresponding to a truncated /** Macro to build the base MAC algorithm corresponding to a truncated
* MAC algorithm. * MAC algorithm.
* *
* \param alg A MAC algorithm identifier (value of type * \param mac_alg A MAC algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg) * #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg)
* is true). This may be a truncated or untruncated * is true). This may be a truncated or untruncated
* MAC algorithm. * MAC algorithm.
@ -798,12 +798,12 @@
* \return Unspecified if \p alg is not a supported * \return Unspecified if \p alg is not a supported
* MAC algorithm. * MAC algorithm.
*/ */
#define PSA_ALG_FULL_LENGTH_MAC(alg) \ #define PSA_ALG_FULL_LENGTH_MAC(mac_alg) \
((alg) & ~PSA_ALG_MAC_TRUNCATION_MASK) ((mac_alg) & ~PSA_ALG_MAC_TRUNCATION_MASK)
/** Length to which a MAC algorithm is truncated. /** Length to which a MAC algorithm is truncated.
* *
* \param alg A MAC algorithm identifier (value of type * \param mac_alg A MAC algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg) * #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg)
* is true). * is true).
* *
@ -812,8 +812,8 @@
* \return Unspecified if \p alg is not a supported * \return Unspecified if \p alg is not a supported
* MAC algorithm. * MAC algorithm.
*/ */
#define PSA_MAC_TRUNCATED_LENGTH(alg) \ #define PSA_MAC_TRUNCATED_LENGTH(mac_alg) \
(((alg) & PSA_ALG_MAC_TRUNCATION_MASK) >> PSA_MAC_TRUNCATION_OFFSET) (((mac_alg) & PSA_ALG_MAC_TRUNCATION_MASK) >> PSA_MAC_TRUNCATION_OFFSET)
#define PSA_ALG_CIPHER_MAC_BASE ((psa_algorithm_t)0x02c00000) #define PSA_ALG_CIPHER_MAC_BASE ((psa_algorithm_t)0x02c00000)
#define PSA_ALG_CBC_MAC ((psa_algorithm_t)0x02c00001) #define PSA_ALG_CBC_MAC ((psa_algorithm_t)0x02c00001)
@ -910,7 +910,7 @@
* Depending on the algorithm, the tag length may affect the calculation * Depending on the algorithm, the tag length may affect the calculation
* of the ciphertext. * of the ciphertext.
* *
* \param alg A AEAD algorithm identifier (value of type * \param aead_alg An AEAD algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_AEAD(\p alg) * #psa_algorithm_t such that #PSA_ALG_IS_AEAD(\p alg)
* is true). * is true).
* \param tag_length Desired length of the authentication tag in bytes. * \param tag_length Desired length of the authentication tag in bytes.
@ -921,26 +921,26 @@
* AEAD algorithm or if \p tag_length is not valid * AEAD algorithm or if \p tag_length is not valid
* for the specified AEAD algorithm. * for the specified AEAD algorithm.
*/ */
#define PSA_ALG_AEAD_WITH_TAG_LENGTH(alg, tag_length) \ #define PSA_ALG_AEAD_WITH_TAG_LENGTH(aead_alg, tag_length) \
(((alg) & ~PSA_ALG_AEAD_TAG_LENGTH_MASK) | \ (((aead_alg) & ~PSA_ALG_AEAD_TAG_LENGTH_MASK) | \
((tag_length) << PSA_AEAD_TAG_LENGTH_OFFSET & \ ((tag_length) << PSA_AEAD_TAG_LENGTH_OFFSET & \
PSA_ALG_AEAD_TAG_LENGTH_MASK)) PSA_ALG_AEAD_TAG_LENGTH_MASK))
/** Calculate the corresponding AEAD algorithm with the default tag length. /** Calculate the corresponding AEAD algorithm with the default tag length.
* *
* \param alg An AEAD algorithm (\c PSA_ALG_XXX value such that * \param aead_alg An AEAD algorithm (\c PSA_ALG_XXX value such that
* #PSA_ALG_IS_AEAD(\p alg) is true). * #PSA_ALG_IS_AEAD(\p alg) is true).
* *
* \return The corresponding AEAD algorithm with the default tag length * \return The corresponding AEAD algorithm with the default
* for that algorithm. * tag length for that algorithm.
*/ */
#define PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH(alg) \ #define PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH(aead_alg) \
( \ ( \
PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(alg, PSA_ALG_CCM) \ PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(aead_alg, PSA_ALG_CCM) \
PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(alg, PSA_ALG_GCM) \ PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(aead_alg, PSA_ALG_GCM) \
0) 0)
#define PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(alg, ref) \ #define PSA__ALG_AEAD_WITH_DEFAULT_TAG_LENGTH__CASE(aead_alg, ref) \
PSA_ALG_AEAD_WITH_TAG_LENGTH(alg, 0) == \ PSA_ALG_AEAD_WITH_TAG_LENGTH(aead_alg, 0) == \
PSA_ALG_AEAD_WITH_TAG_LENGTH(ref, 0) ? \ PSA_ALG_AEAD_WITH_TAG_LENGTH(ref, 0) ? \
ref : ref :

18
tests/scripts/test_psa_constant_names.py
View File

@ -60,8 +60,13 @@ when applicable.'''
self.ecc_curves = set(['0xffff']) self.ecc_curves = set(['0xffff'])
self.key_types = set(['0xffffffff']) self.key_types = set(['0xffffffff'])
self.key_usage_flags = set(['0x80000000']) self.key_usage_flags = set(['0x80000000'])
# Hard-coded value for an unknown hash algorithm # Hard-coded value for unknown algorithms
self.hash_algorithms = set(['0x010000ff']) self.hash_algorithms = set(['0x010000ff'])
self.mac_algorithms = set(['0x02ff00ff'])
# For AEAD algorithms, the only variability is over the tag length,
# and this only applies to known algorithms, so don't test an
# unknown algorithm.
self.aead_algorithms = set()
# Identifier prefixes # Identifier prefixes
self.table_by_prefix = { self.table_by_prefix = {
'ERROR': self.statuses, 'ERROR': self.statuses,
@ -73,12 +78,17 @@ when applicable.'''
# macro name -> list of argument names # macro name -> list of argument names
self.argspecs = {} self.argspecs = {}
# argument name -> list of values # argument name -> list of values
self.arguments_for = {} self.arguments_for = {
'mac_length': ['1', '63'],
'tag_length': ['1', '63'],
}
def gather_arguments(self): def gather_arguments(self):
'''Populate the list of values for macro arguments. '''Populate the list of values for macro arguments.
Call this after parsing all the inputs.''' Call this after parsing all the inputs.'''
self.arguments_for['hash_alg'] = sorted(self.hash_algorithms) self.arguments_for['hash_alg'] = sorted(self.hash_algorithms)
self.arguments_for['mac_alg'] = sorted(self.mac_algorithms)
self.arguments_for['aead_alg'] = sorted(self.aead_algorithms)
self.arguments_for['curve'] = sorted(self.ecc_curves) self.arguments_for['curve'] = sorted(self.ecc_curves)
def format_arguments(self, name, arguments): def format_arguments(self, name, arguments):
@ -145,6 +155,10 @@ where each argument takes each possible value at least once.'''
self.algorithms.add(argument) self.algorithms.add(argument)
if function == 'hash_algorithm': if function == 'hash_algorithm':
self.hash_algorithms.add(argument) self.hash_algorithms.add(argument)
elif function in ['mac_algorithm', 'hmac_algorithm']:
self.mac_algorithms.add(argument)
elif function == 'aead_algorithm':
self.aead_algorithms.add(argument)
elif function == 'key_type': elif function == 'key_type':
self.key_types.add(argument) self.key_types.add(argument)
elif function == 'ecc_key_types': elif function == 'ecc_key_types':