diff options
Diffstat (limited to 'board/cr50/dcrypto/p256_ec.c')
| -rw-r--r-- | board/cr50/dcrypto/p256_ec.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/board/cr50/dcrypto/p256_ec.c b/board/cr50/dcrypto/p256_ec.c index fe0f69c92b..b681d7ddef 100644 --- a/board/cr50/dcrypto/p256_ec.c +++ b/board/cr50/dcrypto/p256_ec.c @@ -23,18 +23,23 @@ int DCRYPTO_p256_base_point_mul(p256_int *out_x, p256_int *out_y, return dcrypto_p256_base_point_mul(n, out_x, out_y); } +enum dcrypto_result DCRYPTO_p256_is_valid_point(const p256_int *x, + const p256_int *y) +{ + return dcrypto_p256_is_valid_point(x, y); +} + /* DCRYPTO_p256_point_mul sets {out_x,out_y} = n*{in_x,in_y}, where n is < * the order of the group. */ -int DCRYPTO_p256_point_mul(p256_int *out_x, p256_int *out_y, - const p256_int *n, const p256_int *in_x, - const p256_int *in_y) +int DCRYPTO_p256_point_mul(p256_int *out_x, p256_int *out_y, const p256_int *n, + const p256_int *in_x, const p256_int *in_y) { - if (p256_is_zero(n) != 0) { + if (p256_is_zero(n) != 0 || + (dcrypto_p256_is_valid_point(in_x, in_y) != DCRYPTO_OK)) { p256_clear(out_x); p256_clear(out_y); return 0; } - return dcrypto_p256_point_mul(n, in_x, in_y, out_x, out_y); } |