yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-12-24 00:25:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #48 from dgreen-arm/fix-zero-key-copy

Browse source 
Allow NULL buffers in psa_copy_key_material when the key size is zero
This commit is contained in:
Jaeden Amero 2019-02-11 17:27:19 +00:00 committed by GitHub
parent 2a0f48ae1f 8096cafa94
commit 8a23dc6642
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
library/psa_crypto.c
View file

@ -1227,7 +1227,7 @@ static psa_status_t psa_copy_key_material( const psa_key_slot_t *source,
buffer_size = PSA_KEY_EXPORT_MAX_SIZE( source->type,
psa_get_key_bits( source ) );
buffer = mbedtls_calloc( 1, buffer_size );
if( buffer == NULL )
if( buffer == NULL && buffer_size != 0 )
return( PSA_ERROR_INSUFFICIENT_MEMORY );
status = psa_internal_export_key( source, buffer, buffer_size, &length, 0 );
if( status != PSA_SUCCESS )
@ -1235,7 +1235,8 @@ static psa_status_t psa_copy_key_material( const psa_key_slot_t *source,
status = psa_import_key( target, source->type, buffer, length );
exit:
mbedtls_platform_zeroize( buffer, buffer_size );
if( buffer_size != 0 )
mbedtls_platform_zeroize( buffer, buffer_size );
mbedtls_free( buffer );
return( status );
}