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Allow NULL buffers in psa_copy_key_material when the key size is zero

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This commit is contained in:
Darryl Green 2019-02-11 11:45:58 +00:00
parent 2a0f48ae1f
commit 8593bca7f8
1 changed files with 1 additions and 1 deletions
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2
library/psa_crypto.c
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@ -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 )