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57 lines
1.4 KiB
Odin
57 lines
1.4 KiB
Odin
package _edwards25519
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import field "core:crypto/_fiat/field_scalar25519"
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import "core:mem"
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Scalar :: field.Montgomery_Domain_Field_Element
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// WARNING: This is non-canonical and only to be used when checking if
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// a group element is on the prime-order subgroup.
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@(private, rodata)
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SC_ELL := field.Non_Montgomery_Domain_Field_Element {
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field.ELL[0],
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field.ELL[1],
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field.ELL[2],
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field.ELL[3],
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}
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sc_set_u64 :: proc "contextless" (sc: ^Scalar, i: u64) {
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tmp := field.Non_Montgomery_Domain_Field_Element{i, 0, 0, 0}
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field.fe_to_montgomery(sc, &tmp)
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mem.zero_explicit(&tmp, size_of(tmp))
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}
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@(require_results)
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sc_set_bytes :: proc "contextless" (sc: ^Scalar, b: []byte) -> bool {
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ensure_contextless(len(b) == 32, "edwards25519: invalid scalar size")
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b_ := (^[32]byte)(raw_data(b))
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return field.fe_from_bytes(sc, b_)
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}
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sc_set_bytes_rfc8032 :: proc "contextless" (sc: ^Scalar, b: []byte) {
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ensure_contextless(len(b) == 32, "edwards25519: invalid scalar size")
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b_ := (^[32]byte)(raw_data(b))
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field.fe_from_bytes_rfc8032(sc, b_)
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}
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sc_clear :: proc "contextless" (sc: ^Scalar) {
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mem.zero_explicit(sc, size_of(Scalar))
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}
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sc_set :: field.fe_set
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sc_set_bytes_wide :: field.fe_from_bytes_wide
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sc_bytes :: field.fe_to_bytes
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sc_zero :: field.fe_zero
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sc_one :: field.fe_one
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sc_add :: field.fe_add
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sc_sub :: field.fe_sub
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sc_negate :: field.fe_opp
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sc_mul :: field.fe_mul
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sc_square :: field.fe_square
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sc_cond_assign :: field.fe_cond_assign
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sc_equal :: field.fe_equal
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