Commit ec1258dd authored by Bodo Möller's avatar Bodo Möller
Browse files

Update comments to provide a better approximation of reality.

parent b99b1107

crypto/bn/bn.h

+3 −2
Original line number Diff line number Diff line
@@ -262,8 +262,9 @@ typedef struct bn_mont_ctx_st 
	int ri;        /* number of bits in R */

	BIGNUM RR;     /* used to convert to montgomery form */

	BIGNUM N;      /* The modulus */

	BIGNUM Ni;     /* The inverse of N (bignum form) */

	BN_ULONG n0;   /* The inverse of N in word form */

	BIGNUM Ni;     /* R*(1/R mod N) - N*Ni = 1

	                * (Ni is only stored for bignum algorithm) */

	BN_ULONG n0;   /* least significant word of Ni */

	int flags;

	} BN_MONT_CTX;

crypto/bn/bn_mont.c

+2 −1
Original line number Diff line number Diff line
@@ -304,7 +304,8 @@ int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx) 
			BN_sub_word(&Ri,1);

		else /* if N mod word size == 1 */

			BN_set_word(&Ri,BN_MASK2);  /* Ri-- (mod word size) */

		BN_div(&Ri,NULL,&Ri,&tmod,ctx);	  	 /* Ni = (R*Ri-1)/N */

		BN_div(&Ri,NULL,&Ri,&tmod,ctx);	/* Ni = (R*Ri-1)/N,

		                                 * keep only list significant word: */

		mont->n0=Ri.d[0];

		BN_free(&Ri);

		}