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From 3fe1d6549765ecfb24f0b80b2ed086fdc818bff3 Mon Sep 17 00:00:00 2001 |
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From: Niels Möller <nisse@lysator.liu.se> |
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Date: Mon, 20 Jun 2016 20:04:56 +0200 |
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Subject: [PATCH] Use mpz_powm_sec. |
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|
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--- |
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configure.ac | 4 ++-- |
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dsa-sign.c | 2 +- |
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rsa-blind.c | 2 +- |
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rsa-sign.c | 4 ++-- |
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4 files changed, 6 insertions(+), 6 deletions(-) |
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|
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diff --git a/configure.ac b/configure.ac |
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index e1ee64c..92a3605 100644 |
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--- a/configure.ac |
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+++ b/configure.ac |
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@@ -231,9 +231,9 @@ |
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# Checks for libraries |
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if test "x$enable_public_key" = "xyes" ; then |
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if test "x$enable_mini_gmp" = "xno" ; then |
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- AC_CHECK_LIB(gmp, __gmpz_getlimbn,, |
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+ AC_CHECK_LIB(gmp, __gmpz_mpz_powm,, |
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[AC_MSG_WARN( |
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- [GNU MP not found, or not 3.1 or up, see http://gmplib.org/. |
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+ [GNU MP not found, or too old. GMP-5.0 or later is needed, see http://gmplib.org/. |
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Support for public key algorithms will be unavailable.])] |
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enable_public_key=no) |
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|
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diff --git a/dsa-sign.c b/dsa-sign.c |
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index 62c7d4a..9d6bb18 100644 |
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--- a/dsa-sign.c |
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+++ b/dsa-sign.c |
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@@ -65,7 +65,7 @@ dsa_sign(const struct dsa_params *params, |
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mpz_add_ui(k, k, 1); |
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|
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/* Compute r = (g^k (mod p)) (mod q) */ |
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- mpz_powm(tmp, params->g, k, params->p); |
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+ mpz_powm_sec(tmp, params->g, k, params->p); |
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mpz_fdiv_r(signature->r, tmp, params->q); |
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|
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/* Compute hash */ |
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diff --git a/rsa-blind.c b/rsa-blind.c |
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index 7662f50..16b03d7 100644 |
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--- a/rsa-blind.c |
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+++ b/rsa-blind.c |
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@@ -61,7 +61,7 @@ _rsa_blind (const struct rsa_public_key *pub, |
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while (!mpz_invert (ri, r, pub->n)); |
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|
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/* c = c*(r^e) mod n */ |
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- mpz_powm(r, r, pub->e, pub->n); |
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+ mpz_powm_sec(r, r, pub->e, pub->n); |
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mpz_mul(c, c, r); |
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mpz_fdiv_r(c, c, pub->n); |
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|
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diff --git a/rsa-sign.c b/rsa-sign.c |
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index eba7388..4832352 100644 |
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--- a/rsa-sign.c |
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+++ b/rsa-sign.c |
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@@ -96,11 +96,11 @@ rsa_compute_root(const struct rsa_private_key *key, |
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|
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/* Compute xq = m^d % q = (m%q)^b % q */ |
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mpz_fdiv_r(xq, m, key->q); |
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- mpz_powm(xq, xq, key->b, key->q); |
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+ mpz_powm_sec(xq, xq, key->b, key->q); |
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|
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/* Compute xp = m^d % p = (m%p)^a % p */ |
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mpz_fdiv_r(xp, m, key->p); |
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- mpz_powm(xp, xp, key->a, key->p); |
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+ mpz_powm_sec(xp, xp, key->a, key->p); |
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|
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/* Set xp' = (xp - xq) c % p. */ |
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mpz_sub(xp, xp, xq); |
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-- |
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libgit2 0.24.0 |
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