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psa: cipher: Remove cipher_generate_iv driver entry point

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Remove cipher_generate_iv driver entry point as there
is no known use case to delegate this to a driver.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron
2021-03-26 09:52:26 +01:00
parent a0d6817838
commit 5618a39fcf
8 changed files with 23 additions and 149 deletions
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24
library/psa_crypto.c
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@@ -3322,6 +3322,7 @@ static psa_status_t psa_cipher_setup( psa_cipher_operation_t *operation,
operation->iv_required = 0;
else
operation->iv_required = 1;
operation->default_iv_length = PSA_CIPHER_IV_LENGTH( slot->attr.type, alg );
psa_key_attributes_t attributes = {
.core = slot->attr
@@ -3371,6 +3372,8 @@ psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
*iv_length = 0;
if( operation->id == 0 )
{
return( PSA_ERROR_BAD_STATE );
@@ -3381,13 +3384,26 @@ psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
return( PSA_ERROR_BAD_STATE );
}
status = psa_driver_wrapper_cipher_generate_iv( operation,
iv,
iv_size,
iv_length );
if( iv_size < operation->default_iv_length )
{
status = PSA_ERROR_BUFFER_TOO_SMALL;
goto exit;
}
status = psa_generate_random( iv, operation->default_iv_length );
if( status != PSA_SUCCESS )
goto exit;
status = psa_driver_wrapper_cipher_set_iv( operation,
iv,
operation->default_iv_length );
exit:
if( status == PSA_SUCCESS )
{
operation->iv_set = 1;
*iv_length = operation->default_iv_length;
}
else
psa_cipher_abort( operation );