Function mulPublic [src]

Multiply an elliptic curve point by a PUBLIC scalar IN VARIABLE TIME This can be used for signature verification.

Prototype

pub fn mulPublic(p: P256, s_: [32]u8, endian: std.builtin.Endian) IdentityElementError!P256

Parameters

p: P256s_: [32]u8endian: std.builtin.Endian

Possible Errors

Source

  pub fn mulPublic(p: P256, s_: [32]u8, endian: std.builtin.Endian) IdentityElementError!P256 {
    const s = if (endian == .little) s_ else Fe.orderSwap(s_);
    if (p.is_base) {
        return pcMul16(&basePointPc, s, true);
    }
    try p.rejectIdentity();
    const pc = precompute(p, 8);
    return pcMul(&pc, s, true);
}  