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-rw-r--r--src/crypto/bn/gcd.c32
1 files changed, 9 insertions, 23 deletions
diff --git a/src/crypto/bn/gcd.c b/src/crypto/bn/gcd.c
index e106149..3132c29 100644
--- a/src/crypto/bn/gcd.c
+++ b/src/crypto/bn/gcd.c
@@ -223,23 +223,20 @@ err:
}
/* solves ax == 1 (mod n) */
-static BIGNUM *BN_mod_inverse_no_branch(BIGNUM *out, int *out_no_inverse,
- const BIGNUM *a, const BIGNUM *n,
- BN_CTX *ctx);
+static BIGNUM *BN_mod_inverse_no_branch(BIGNUM *out, const BIGNUM *a,
+ const BIGNUM *n, BN_CTX *ctx);
-BIGNUM *BN_mod_inverse_ex(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
- const BIGNUM *n, BN_CTX *ctx) {
+BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a, const BIGNUM *n,
+ BN_CTX *ctx) {
BIGNUM *A, *B, *X, *Y, *M, *D, *T, *R = NULL;
BIGNUM *ret = NULL;
int sign;
if ((a->flags & BN_FLG_CONSTTIME) != 0 ||
(n->flags & BN_FLG_CONSTTIME) != 0) {
- return BN_mod_inverse_no_branch(out, out_no_inverse, a, n, ctx);
+ return BN_mod_inverse_no_branch(out, a, n, ctx);
}
- *out_no_inverse = 0;
-
BN_CTX_start(ctx);
A = BN_CTX_get(ctx);
B = BN_CTX_get(ctx);
@@ -525,8 +522,7 @@ BIGNUM *BN_mod_inverse_ex(BIGNUM *out, int *out_no_inverse, const BIGNUM *a,
}
}
} else {
- *out_no_inverse = 1;
- OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+ OPENSSL_PUT_ERROR(BN, BN_mod_inverse, BN_R_NO_INVERSE);
goto err;
}
ret = R;
@@ -539,25 +535,16 @@ err:
return ret;
}
-BIGNUM *BN_mod_inverse(BIGNUM *out, const BIGNUM *a, const BIGNUM *n,
- BN_CTX *ctx) {
- int no_inverse;
- return BN_mod_inverse_ex(out, &no_inverse, a, n, ctx);
-}
-
/* BN_mod_inverse_no_branch is a special version of BN_mod_inverse.
* It does not contain branches that may leak sensitive information. */
-static BIGNUM *BN_mod_inverse_no_branch(BIGNUM *out, int *out_no_inverse,
- const BIGNUM *a, const BIGNUM *n,
- BN_CTX *ctx) {
+static BIGNUM *BN_mod_inverse_no_branch(BIGNUM *out, const BIGNUM *a,
+ const BIGNUM *n, BN_CTX *ctx) {
BIGNUM *A, *B, *X, *Y, *M, *D, *T, *R = NULL;
BIGNUM local_A, local_B;
BIGNUM *pA, *pB;
BIGNUM *ret = NULL;
int sign;
- *out_no_inverse = 0;
-
BN_CTX_start(ctx);
A = BN_CTX_get(ctx);
B = BN_CTX_get(ctx);
@@ -695,8 +682,7 @@ static BIGNUM *BN_mod_inverse_no_branch(BIGNUM *out, int *out_no_inverse,
}
}
} else {
- *out_no_inverse = 1;
- OPENSSL_PUT_ERROR(BN, BN_R_NO_INVERSE);
+ OPENSSL_PUT_ERROR(BN, BN_mod_inverse_no_branch, BN_R_NO_INVERSE);
goto err;
}
ret = R;