Commit c04949e9 authored by Ulf Möller's avatar Ulf Möller
Browse files

work around a bug in BN_div_recp or BN_reciprocal

parent 505b5a0e

crypto/bn/bn_recp.c

+9 −0
Original line number Diff line number Diff line
@@ -191,7 +191,16 @@ int BN_div_recp(BIGNUM *dv, BIGNUM *rem, BIGNUM *m, BN_RECP_CTX *recp, 
		{

		if (j++ > 2)

			{

#if 1

			/* work around some bug:

			   -1CC0E177F93042B29D309839F8019DB93404D7A395F1E162

			   5383BF622A20B17E1BAA999336988B82B93F5FB77B55B4B68

			   9412000000000031 / 298EB5957DBFB8CBB2CC2A9F789D2B5

			   fails, for example. */

			ret=BN_div(dv,rem,a,&(recp->N),ctx);

#else

			BNerr(BN_F_BN_MOD_MUL_RECIPROCAL,BN_R_BAD_RECIPROCAL);

#endif

			goto err;

			}

		if (!BN_usub(r,r,&(recp->N))) goto err;