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Minor documentation improvements

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This commit is contained in:
Gilles Peskine 2019-05-22 11:45:59 +02:00
parent 96f0b3b1d3
commit f25c9ec02e
2 changed files with 5 additions and 5 deletions
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2
include/psa/crypto_extra.h
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@ -81,7 +81,7 @@ extern "C" {
* attacks based on arithmetic relations between different
* computations made with the same key, or can escalate harmless
* side channels into exploitable ones. Use this function only
* if it is necessary to support a protocol for which is has been
* if it is necessary to support a protocol for which it has been
* verified that the usage of the key with multiple algorithms
* is safe.
*/

8
library/psa_crypto.c
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@ -768,7 +768,7 @@ static psa_algorithm_t psa_key_policy_algorithm_intersection(
psa_algorithm_t alg1,
psa_algorithm_t alg2 )
{
/* Common case: the policy only allows alg. */
/* Common case: both sides actually specify the same policy. */
if( alg1 == alg2 )
return( alg1 );
/* If the policies are from the same hash-and-sign family, check
@ -789,12 +789,12 @@ static psa_algorithm_t psa_key_policy_algorithm_intersection(
static int psa_key_algorithm_permits( psa_algorithm_t policy_alg,
psa_algorithm_t requested_alg )
{
/* Common case: the policy only allows alg. */
/* Common case: the policy only allows requested_alg. */
if( requested_alg == policy_alg )
return( 1 );
/* If policy_alg is a hash-and-sign with a wildcard for the hash,
* and alg is the same hash-and-sign family with any hash,
* then alg is compliant with policy_alg. */
* and requested_alg is the same hash-and-sign family with any hash,
* then requested_alg is compliant with policy_alg. */
if( PSA_ALG_IS_HASH_AND_SIGN( requested_alg ) &&
PSA_ALG_SIGN_GET_HASH( policy_alg ) == PSA_ALG_ANY_HASH )
{