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psa_get_domain_parameters: for RSA, if e=65537, output an empty string

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Gilles Peskine
2019-04-26 17:37:21 +02:00
parent b699f07af0
commit 772c8b16b4
1 changed files with 6 additions and 0 deletions
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6
library/psa_crypto.c
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@ -1044,6 +1044,12 @@ static psa_status_t psa_get_rsa_public_exponent(
ret = mbedtls_rsa_export( rsa, NULL, NULL, NULL, NULL, &mpi ); ret = mbedtls_rsa_export( rsa, NULL, NULL, NULL, NULL, &mpi );
if( ret != 0 ) if( ret != 0 )
goto exit; goto exit;
if( mbedtls_mpi_cmp_int( &mpi, 65537 ) == 0 )
{
/* It's the default value, which is reported as an empty string,
* so there's nothing to do. */
goto exit;
}
buflen = mbedtls_mpi_size( &mpi ); buflen = mbedtls_mpi_size( &mpi );
buffer = mbedtls_calloc( 1, buflen ); buffer = mbedtls_calloc( 1, buflen );