Commit 6039651c authored by Pauli's avatar Pauli
Browse files

Add a constant time flag to one of the bignums to avoid a timing leak. 



Reviewed-by: default avatarTim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7549)

(cherry picked from commit 00496b6423605391864fbbd1693f23631a1c5239)
parent 222b0a8e

crypto/dsa/dsa_ossl.c

+1 −0
Original line number Diff line number Diff line
@@ -223,6 +223,7 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, 
    } while (BN_is_zero(k));



    BN_set_flags(k, BN_FLG_CONSTTIME);

    BN_set_flags(l, BN_FLG_CONSTTIME);



    if (dsa->flags & DSA_FLAG_CACHE_MONT_P) {

        if (!BN_MONT_CTX_set_locked(&dsa->method_mont_p,