| commit | d830feb2561d99fa8b25c7ca68ed92db8b1d71bc | [log] [tgz] |
|---|---|---|
| author | Hanno Becker <hanno.becker@arm.com> | Tue Apr 12 11:10:19 2022 +0100 |
| committer | Hanno Becker <hanno.becker@arm.com> | Tue Apr 12 11:10:19 2022 +0100 |
| tree | b5d466041c0c584d42fe4bcaf366c421b1763630 | |
| parent | 2ef0cff6c3d4b55462269e51921641e29f5fa12e [diff] [blame] |
Simplify check in p25519 quasi-reduction Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/ecp_curves.c b/library/ecp_curves.c index d3a14d6..9e70e8e 100644 --- a/library/ecp_curves.c +++ b/library/ecp_curves.c
@@ -5223,7 +5223,7 @@ /* Helper references for top part of N */ mbedtls_mpi_uint * const NT_p = N->p + P255_WIDTH; const size_t NT_n = N->n - P255_WIDTH; - if( NT_n == 0 || NT_n > N->n ) + if( NT_n <= P255_WIDTH ) return( 0 ); /* Split N as N + 2^256 M */