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path: root/src/math/numbertheory/powm_mnt.cpp
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-rw-r--r--src/math/numbertheory/powm_mnt.cpp44
1 files changed, 19 insertions, 25 deletions
diff --git a/src/math/numbertheory/powm_mnt.cpp b/src/math/numbertheory/powm_mnt.cpp
index 421470364..0f674ba03 100644
--- a/src/math/numbertheory/powm_mnt.cpp
+++ b/src/math/numbertheory/powm_mnt.cpp
@@ -33,13 +33,12 @@ void Montgomery_Exponentiator::set_base(const BigInt& base)
SecureVector<word> workspace(z.size());
g[0] = (base >= modulus) ? (base % modulus) : base;
- bigint_mul(&z[0], z.size(), &workspace[0],
- g[0].data(), g[0].size(), g[0].sig_words(),
- R2.data(), R2.size(), R2.sig_words());
- bigint_monty_redc(&z[0], z.size(),
- &workspace[0],
- modulus.data(), mod_words, mod_prime);
+ bigint_monty_mul(&z[0], z.size(),
+ g[0].data(), g[0].size(), g[0].sig_words(),
+ R2.data(), R2.size(), R2.sig_words(),
+ modulus.data(), mod_words, mod_prime,
+ &workspace[0]);
g[0].assign(&z[0], mod_words + 1);
@@ -52,13 +51,11 @@ void Montgomery_Exponentiator::set_base(const BigInt& base)
const size_t y_sig = y.sig_words();
zeroise(z);
- bigint_mul(&z[0], z.size(), &workspace[0],
- x.data(), x.size(), x_sig,
- y.data(), y.size(), y_sig);
-
- bigint_monty_redc(&z[0], z.size(),
- &workspace[0],
- modulus.data(), mod_words, mod_prime);
+ bigint_monty_mul(&z[0], z.size(),
+ x.data(), x.size(), x_sig,
+ y.data(), y.size(), y_sig,
+ modulus.data(), mod_words, mod_prime,
+ &workspace[0]);
g[i].assign(&z[0], mod_words + 1);
}
@@ -80,12 +77,11 @@ BigInt Montgomery_Exponentiator::execute() const
for(size_t k = 0; k != window_bits; ++k)
{
zeroise(z);
- bigint_sqr(&z[0], z.size(), &workspace[0],
- x.data(), x.size(), x.sig_words());
- bigint_monty_redc(&z[0], z.size(),
- &workspace[0],
- modulus.data(), mod_words, mod_prime);
+ bigint_monty_sqr(&z[0], z.size(),
+ x.data(), x.size(), x.sig_words(),
+ modulus.data(), mod_words, mod_prime,
+ &workspace[0]);
x.assign(&z[0], mod_words + 1);
}
@@ -95,13 +91,11 @@ BigInt Montgomery_Exponentiator::execute() const
const BigInt& y = g[nibble-1];
zeroise(z);
- bigint_mul(&z[0], z.size(), &workspace[0],
- x.data(), x.size(), x.sig_words(),
- y.data(), y.size(), y.sig_words());
-
- bigint_monty_redc(&z[0], z.size(),
- &workspace[0],
- modulus.data(), mod_words, mod_prime);
+ bigint_monty_mul(&z[0], z.size(),
+ x.data(), x.size(), x.sig_words(),
+ y.data(), y.size(), y.sig_words(),
+ modulus.data(), mod_words, mod_prime,
+ &workspace[0]);
x.assign(&z[0], mod_words + 1);
}