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core/crypto/_edwards25519: Initial import

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Yawning Angel
2024-04-09 14:37:59 +09:00
parent fec42a6d74
commit 563c527419
7 changed files with 885 additions and 49 deletions
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core/crypto/x25519/x25519.odin
+2 -8
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@@ -94,13 +94,8 @@ _scalarmult :: proc "contextless" (out, scalar, point: ^[32]byte) {
field.fe_carry_mul(&x2, field.fe_relax_cast(&x2), field.fe_relax_cast(&z2))
field.fe_to_bytes(out, &x2)
mem.zero_explicit(&x1, size_of(x1))
mem.zero_explicit(&x2, size_of(x2))
mem.zero_explicit(&x3, size_of(x3))
mem.zero_explicit(&z2, size_of(z2))
mem.zero_explicit(&z3, size_of(z3))
mem.zero_explicit(&t0, size_of(t0))
mem.zero_explicit(&t1, size_of(t1))
field.fe_clear_vec([]^field.Tight_Field_Element{&x1, &x2, &x3, &z2, &z3})
field.fe_clear_vec([]^field.Loose_Field_Element{&t0, &t1})
}
// scalarmult "multiplies" the provided scalar and point, and writes the
@@ -137,6 +132,5 @@ scalarmult :: proc(dst, scalar, point: []byte) {
// scalarmult_basepoint "multiplies" the provided scalar with the X25519
// base point and writes the resulting point to dst.
scalarmult_basepoint :: proc(dst, scalar: []byte) {
// TODO/perf: Switch to using a precomputed table.
scalarmult(dst, scalar, _BASE_POINT[:])
}