Commit fcf71cf0 authored by John Kelley's avatar John Kelley
Browse files

Add unit tests for EcGroup::from_components,... 

Add unit tests for EcGroup::from_components, EcPoint.set_affine_coordinates_gfp, and EcGroup.set_generator
parent 36412798

openssl/src/ec.rs

+91 −0
Original line number Diff line number Diff line
@@ -941,6 +941,97 @@ mod test { 
        EcKey::generate(&group).unwrap();

    }



    #[test]

    fn ec_group_from_components() {

        // parameters are from secp256r1

        let p = BigNum::from_hex_str(

            "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF",

        )

        .unwrap();

        let a = BigNum::from_hex_str(

            "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC",

        )

        .unwrap();

        let b = BigNum::from_hex_str(

            "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B",

        )

        .unwrap();

        let mut ctx = BigNumContext::new().unwrap();



        let _curve = EcGroup::from_components(p, a, b, &mut ctx).unwrap();

    }



    #[test]

    fn ec_point_set_affine() {

        // parameters are from secp256r1

        let group = EcGroup::from_curve_name(Nid::X9_62_PRIME256V1).unwrap();

        let mut ctx = BigNumContext::new().unwrap();

        let mut gen_point = EcPoint::new(&group).unwrap();

        let gen_x = BigNum::from_hex_str(

            "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296",

        )

        .unwrap();

        let gen_y = BigNum::from_hex_str(

            "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5",

        )

        .unwrap();

        gen_point

            .set_affine_coordinates_gfp(&group, &gen_x, &gen_y, &mut ctx)

            .unwrap();

        assert!(gen_point.is_on_curve(&group, &mut ctx).unwrap());

    }



    #[test]

    fn ec_group_set_generator() {

        // parameters are from secp256r1

        let mut ctx = BigNumContext::new().unwrap();

        let p = BigNum::from_hex_str(

            "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF",

        )

        .unwrap();

        let a = BigNum::from_hex_str(

            "FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC",

        )

        .unwrap();

        let b = BigNum::from_hex_str(

            "5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B",

        )

        .unwrap();



        let mut group = EcGroup::from_components(p, a, b, &mut ctx).unwrap();



        let mut gen_point = EcPoint::new(&group).unwrap();

        let gen_x = BigNum::from_hex_str(

            "6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296",

        )

        .unwrap();

        let gen_y = BigNum::from_hex_str(

            "4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5",

        )

        .unwrap();

        gen_point

            .set_affine_coordinates_gfp(&group, &gen_x, &gen_y, &mut ctx)

            .unwrap();



        let order = BigNum::from_hex_str(

            "FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551",

        )

        .unwrap();

        let cofactor = BigNum::from_hex_str("01").unwrap();

        group.set_generator(gen_point, order, cofactor).unwrap();

        let mut constructed_order = BigNum::new().unwrap();

        group.order(&mut constructed_order, &mut ctx).unwrap();



        let named_group = EcGroup::from_curve_name(Nid::X9_62_PRIME256V1).unwrap();

        let mut named_order = BigNum::new().unwrap();

        named_group.order(&mut named_order, &mut ctx).unwrap();



        assert_eq!(

            constructed_order.ucmp(&named_order),

            std::cmp::Ordering::Equal

        );

    }



    #[test]

    fn cofactor() {

        let group = EcGroup::from_curve_name(Nid::X9_62_PRIME256V1).unwrap();