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LibCrypto+LibTLS: Add SECP256r1 support to LibTLS

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Add the required methods to SECP256r1 to conform to the EllipticCurve
virtual base class. Using this updated version of SECP256r1, support in
LibTLS is implemented.
This commit is contained in:
Michiel Visser 2022-03-18 10:39:34 +01:00 • committed by Ali Mohammad Pur
parent c1b041e761
commit 66d99c83d9
5 changed files with 35 additions and 6 deletions
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10
Userland/Libraries/LibCrypto/Curves/SECP256r1.h
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@ -8,6 +8,7 @@
#include <AK/ByteBuffer.h>
#include <AK/UFixedBigInt.h>
#include <LibCrypto/Curves/EllipticCurve.h>
namespace Crypto::Curves {
@ -17,10 +18,13 @@ struct JacobianPoint {
u256 z { 0u };
};
class SECP256r1 {
class SECP256r1 : public EllipticCurve {
public:
static ErrorOr<ByteBuffer> generate_public_key(ReadonlyBytes a);
static ErrorOr<ByteBuffer> compute_coordinate(ReadonlyBytes scalar_bytes, ReadonlyBytes point_bytes);
size_t key_size() override { return 1 + 2 * 32; }
ErrorOr<ByteBuffer> generate_private_key() override;
ErrorOr<ByteBuffer> generate_public_key(ReadonlyBytes a) override;
ErrorOr<ByteBuffer> compute_coordinate(ReadonlyBytes scalar_bytes, ReadonlyBytes point_bytes) override;
ErrorOr<ByteBuffer> derive_premaster_key(ReadonlyBytes shared_point) override;
private:
static u256 modular_reduce(u256 const& value);