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Guard primality checks in RSA module by MBEDTLS_GENPRIME

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Primality testing is guarded by the configuration flag MBEDTLS_GENPRIME and used in the new RSA helper functions. This
commit adds a corresponding preprocessor directive.
This commit is contained in:
Hanno Becker 2017-08-24 06:55:11 +01:00
parent b0c5edcc2f
commit fb81c0ec2e
1 changed files with 7 additions and 0 deletions
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7
library/rsa.c
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@ -361,6 +361,7 @@ int mbedtls_rsa_check_params( mbedtls_mpi *N, mbedtls_mpi *P, mbedtls_mpi *Q,
* Step 1: If PRNG provided, check that P and Q are prime
*/
#if defined(MBEDTLS_GENPRIME)
if( f_rng != NULL && P != NULL &&
( ret = mbedtls_mpi_is_prime( P, f_rng, p_rng ) ) != 0 )
{
@ -372,6 +373,10 @@ int mbedtls_rsa_check_params( mbedtls_mpi *N, mbedtls_mpi *P, mbedtls_mpi *Q,
{
goto cleanup;
}
#else
((void) f_rng);
((void) p_rng);
#endif /* MBEDTLS_GENPRIME */
/*
* Step 2: Check that N = PQ
@ -571,6 +576,7 @@ int mbedtls_rsa_complete( mbedtls_rsa_context *ctx,
}
else if( d_missing )
{
#if defined(MBEDTLS_GENPRIME)
/* If a PRNG is provided, check if P, Q are prime. */
if( f_rng != NULL &&
( ( ret = mbedtls_mpi_is_prime( &ctx->P, f_rng, p_rng ) ) != 0 ||
@ -578,6 +584,7 @@ int mbedtls_rsa_complete( mbedtls_rsa_context *ctx,
{
return( MBEDTLS_ERR_RSA_BAD_INPUT_DATA + ret );
}
#endif /* MBEDTLS_GENPRIME */
/* Compute N if missing. */
if( !have_N &&