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internal/bigmod: make CmpGeq public

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Sun Yimin 2024-05-31 18:13:14 +08:00 committed by GitHub
parent 91932efc27
commit 81b0c7f5ae
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1 changed files with 3 additions and 3 deletions
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6
internal/bigmod/nat.go
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@ -155,7 +155,7 @@ func (x *Nat) SetBytes(b []byte, m *Modulus) (*Nat, error) {
if err := x.setBytes(b, m); err != nil { if err := x.setBytes(b, m); err != nil {
return nil, err return nil, err
} }
if x.cmpGeq(m.nat) == yes { if x.CmpGeq(m.nat) == yes {
return nil, errors.New("input overflows the modulus") return nil, errors.New("input overflows the modulus")
} }
return x, nil return x, nil
@ -234,10 +234,10 @@ func (x *Nat) IsZero() choice {
return zero return zero
} }
// cmpGeq returns 1 if x >= y, and 0 otherwise. // CmpGeq returns 1 if x >= y, and 0 otherwise.
// //
// Both operands must have the same announced length. // Both operands must have the same announced length.
func (x *Nat) cmpGeq(y *Nat) choice { func (x *Nat) CmpGeq(y *Nat) choice {
// Eliminate bounds checks in the loop. // Eliminate bounds checks in the loop.
size := len(x.limbs) size := len(x.limbs)
xLimbs := x.limbs[:size] xLimbs := x.limbs[:size]