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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:50 +0000 |
commit | 9835e2ae736235810b4ea1c162ca5e65c547e770 (patch) | |
tree | 3fcebf40ed70e581d776a8a4c65923e8ec20e026 /vendor/crypto-bigint/src/uint/modular/inv.rs | |
parent | Releasing progress-linux version 1.70.0+dfsg2-1~progress7.99u1. (diff) | |
download | rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.tar.xz rustc-9835e2ae736235810b4ea1c162ca5e65c547e770.zip |
Merging upstream version 1.71.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/crypto-bigint/src/uint/modular/inv.rs')
-rw-r--r-- | vendor/crypto-bigint/src/uint/modular/inv.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/vendor/crypto-bigint/src/uint/modular/inv.rs b/vendor/crypto-bigint/src/uint/modular/inv.rs new file mode 100644 index 000000000..408c03fb8 --- /dev/null +++ b/vendor/crypto-bigint/src/uint/modular/inv.rs @@ -0,0 +1,14 @@ +use crate::{modular::reduction::montgomery_reduction, CtChoice, Limb, Uint}; + +pub const fn inv_montgomery_form<const LIMBS: usize>( + x: &Uint<LIMBS>, + modulus: &Uint<LIMBS>, + r3: &Uint<LIMBS>, + mod_neg_inv: Limb, +) -> (Uint<LIMBS>, CtChoice) { + let (inverse, is_some) = x.inv_odd_mod(modulus); + ( + montgomery_reduction(&inverse.mul_wide(r3), modulus, mod_neg_inv), + is_some, + ) +} |