Function mul [src]

Multiply an Edwards25519 point by a scalar without clamping it. Return error.WeakPublicKey if the base generates a small-order group, and error.IdentityElement if the result is the identity element.

Prototype

pub fn mul(p: Edwards25519, s: [32]u8) (IdentityElementError || WeakPublicKeyError)!Edwards25519

Parameters

p: Edwards25519s: [32]u8

Source

  pub fn mul(p: Edwards25519, s: [32]u8) (IdentityElementError || WeakPublicKeyError)!Edwards25519 {
    const pc = if (p.is_base) basePointPc else pc: {
        const xpc = precompute(p, 15);
        xpc[4].rejectIdentity() catch return error.WeakPublicKey;
        break :pc xpc;
    };
    return pcMul16(&pc, s, false);
}  