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Merge pull request #5002 from mstarzyk-mobica/psa_output_buffer_limitation

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Remove output buffer limitation for PSA with GCM.
This commit is contained in:
Gilles Peskine
2021-10-25 19:37:33 +02:00
committed by GitHub
parent f7946a6210 30bd7fa607
commit 4fa0725936
10 changed files with 53 additions and 9 deletions
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2
library/gcm.c
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@ -431,7 +431,7 @@ int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
unsigned char ectr[16];
if( output_size < input_length )
return( MBEDTLS_ERR_GCM_BAD_INPUT );
return( MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL );
GCM_VALIDATE_RET( output_length != NULL );
*output_length = input_length;

2
library/psa_crypto.c
View File

@ -201,6 +201,8 @@ psa_status_t mbedtls_to_psa_error( int ret )
case MBEDTLS_ERR_GCM_AUTH_FAILED:
return( PSA_ERROR_INVALID_SIGNATURE );
case MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL:
return( PSA_ERROR_BUFFER_TOO_SMALL );
case MBEDTLS_ERR_GCM_BAD_INPUT:
return( PSA_ERROR_INVALID_ARGUMENT );

6
library/psa_crypto_aead.c
View File

@ -510,9 +510,6 @@ psa_status_t mbedtls_psa_aead_update(
#if defined(MBEDTLS_PSA_BUILTIN_ALG_GCM)
if( operation->alg == PSA_ALG_GCM )
{
if( output_size < input_length )
return( PSA_ERROR_BUFFER_TOO_SMALL );
status = mbedtls_to_psa_error(
mbedtls_gcm_update( &operation->ctx.gcm,
input, input_length,
@ -567,9 +564,6 @@ psa_status_t mbedtls_psa_aead_finish(
#if defined(MBEDTLS_PSA_BUILTIN_ALG_GCM)
if( operation->alg == PSA_ALG_GCM )
{
if( ciphertext_size < 15 )
return( PSA_ERROR_BUFFER_TOO_SMALL );
status = mbedtls_to_psa_error(
mbedtls_gcm_finish( &operation->ctx.gcm,
ciphertext, ciphertext_size, ciphertext_length,