saymrwulf/curve25519-dalek-source
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Refactor to use new curve25519-dalek APIs.

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This commit is contained in:
Isis Lovecruft 2017-05-14 10:57:59 +00:00
parent 02e5a94044
commit 99d3426569
Failed to extract signature
1 changed files with 5 additions and 7 deletions
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12
src/ed25519.rs
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@ -19,11 +19,9 @@ use digest::Input;
use digest::FixedOutput; use digest::FixedOutput;
use generic_array::typenum::U64; use generic_array::typenum::U64;
use curve25519_dalek::curve; use curve25519_dalek::constants;
use curve25519_dalek::curve::BasepointMult;
use curve25519_dalek::curve::CompressedEdwardsY; use curve25519_dalek::curve::CompressedEdwardsY;
use curve25519_dalek::curve::ExtendedPoint; use curve25519_dalek::curve::ExtendedPoint;
use curve25519_dalek::curve::ProjectivePoint;
use curve25519_dalek::scalar::Scalar; use curve25519_dalek::scalar::Scalar;
use curve25519_dalek::subtle::arrays_equal_ct; use curve25519_dalek::subtle::arrays_equal_ct;
@ -168,7 +166,7 @@ impl SecretKey {
mesg_digest = Scalar::reduce(&hash); mesg_digest = Scalar::reduce(&hash);
r = ExtendedPoint::basepoint_mult(&mesg_digest); r = &mesg_digest * &constants::ED25519_BASEPOINT;
h = D::default(); h = D::default();
h.digest(&r.compress_edwards().to_bytes()[..]); h.digest(&r.compress_edwards().to_bytes()[..]);
@ -251,7 +249,7 @@ impl PublicKey {
let mut h: D = D::default(); let mut h: D = D::default();
let mut a: ExtendedPoint; let mut a: ExtendedPoint;
let ao: Option<ExtendedPoint>; let ao: Option<ExtendedPoint>;
let r: ProjectivePoint; let r: ExtendedPoint;
let digest: [u8; 64]; let digest: [u8; 64];
let digest_reduced: Scalar; let digest_reduced: Scalar;
@ -277,7 +275,7 @@ impl PublicKey {
let digest_bytes = h.fixed_result(); let digest_bytes = h.fixed_result();
digest = *array_ref!(digest_bytes, 0, 64); digest = *array_ref!(digest_bytes, 0, 64);
digest_reduced = Scalar::reduce(&digest); digest_reduced = Scalar::reduce(&digest);
r = curve::double_scalar_mult_vartime(&digest_reduced, &a, &Scalar(*top_half)); r = &(&digest_reduced * &a) + &(&Scalar(*top_half) * &constants::ED25519_BASEPOINT);
if arrays_equal_ct(bottom_half, &r.compress_edwards().to_bytes()) == 1 { if arrays_equal_ct(bottom_half, &r.compress_edwards().to_bytes()) == 1 {
return true return true
@ -354,7 +352,7 @@ impl Keypair {
digest[31] &= 127; digest[31] &= 127;
digest[31] |= 64; digest[31] |= 64;
pk = ExtendedPoint::basepoint_mult(&Scalar(*digest)).compress_edwards().to_bytes(); pk = (&Scalar(*digest) * &constants::ED25519_BASEPOINT).compress_edwards().to_bytes();
for i in 0..32 { for i in 0..32 {
sk[i] = t[i]; sk[i] = t[i];