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Check public part when parsing private RSA key

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Manuel Pégourié-Gonnard 2020-02-14 11:28:47 +01:00 committed by Manuel Pégourié-Gonnard
parent 9ab0305700
commit 25bb8dc228
1 changed files with 13 additions and 2 deletions
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15
library/pkparse.c
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@ -819,9 +819,20 @@ static int pk_parse_key_pkcs1_der( mbedtls_rsa_context *rsa,
goto cleanup; goto cleanup;
#endif #endif
/* Complete the RSA private key */ /* rsa_complete() doesn't complete anything with the default
if( ( ret = mbedtls_rsa_complete( rsa ) ) != 0 ) * implementation but is still called:
* - for the benefit of alternative implementation that may want to
* pre-compute stuff beyond what's provided (eg Montgomery factors)
* - as is also sanity-checks the key
*
* Furthermore, we also check the public part for consistency with
* mbedtls_pk_parse_pubkey(), as it includes size minima for example.
*/
if( ( ret = mbedtls_rsa_complete( rsa ) ) != 0 ||
( ret = mbedtls_rsa_check_pubkey( rsa ) ) != 0 )
{
goto cleanup; goto cleanup;
}
if( p != end ) if( p != end )
{ {