CryptoKeyEC.h   [plain text]


/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
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 *
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#pragma once

#include "CryptoKey.h"
#include "CryptoKeyPair.h"
#include "ExceptionOr.h"

#if ENABLE(WEB_CRYPTO)

#if OS(DARWIN) && !PLATFORM(GTK)
typedef struct _CCECCryptor *CCECCryptorRef;
typedef CCECCryptorRef PlatformECKey;
#endif

#if PLATFORM(GTK) || PLATFORM(WPE)
// gcry_sexp* equates gcry_sexp_t.
struct gcry_sexp;
typedef gcry_sexp* PlatformECKey;
#endif


namespace WebCore {

struct JsonWebKey;

class CryptoKeyEC final : public CryptoKey {
public:
    enum class NamedCurve {
        P256,
        P384,
        P521,
    };

    static Ref<CryptoKeyEC> create(CryptoAlgorithmIdentifier identifier, NamedCurve curve, CryptoKeyType type, PlatformECKey platformKey, bool extractable, CryptoKeyUsageBitmap usages)
    {
        return adoptRef(*new CryptoKeyEC(identifier, curve, type, platformKey, extractable, usages));
    }
    virtual ~CryptoKeyEC();

    static ExceptionOr<CryptoKeyPair> generatePair(CryptoAlgorithmIdentifier, const String& curve, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> importRaw(CryptoAlgorithmIdentifier, const String& curve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> importJwk(CryptoAlgorithmIdentifier, const String& curve, JsonWebKey&&, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> importSpki(CryptoAlgorithmIdentifier, const String& curve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> importPkcs8(CryptoAlgorithmIdentifier, const String& curve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);

    ExceptionOr<Vector<uint8_t>> exportRaw() const;
    ExceptionOr<JsonWebKey> exportJwk() const;
    ExceptionOr<Vector<uint8_t>> exportSpki() const;
    ExceptionOr<Vector<uint8_t>> exportPkcs8() const;

    size_t keySizeInBits() const;
    NamedCurve namedCurve() const { return m_curve; }
    String namedCurveString() const;
    PlatformECKey platformKey() const { return m_platformKey; }
    static bool isValidECAlgorithm(CryptoAlgorithmIdentifier);

private:
    CryptoKeyEC(CryptoAlgorithmIdentifier, NamedCurve, CryptoKeyType, PlatformECKey, bool extractable, CryptoKeyUsageBitmap);

    CryptoKeyClass keyClass() const final { return CryptoKeyClass::EC; }

    KeyAlgorithm algorithm() const final;

    static bool platformSupportedCurve(NamedCurve);
    static Optional<CryptoKeyPair> platformGeneratePair(CryptoAlgorithmIdentifier, NamedCurve, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> platformImportRaw(CryptoAlgorithmIdentifier, NamedCurve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> platformImportJWKPublic(CryptoAlgorithmIdentifier, NamedCurve, Vector<uint8_t>&& x, Vector<uint8_t>&& y, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> platformImportJWKPrivate(CryptoAlgorithmIdentifier, NamedCurve, Vector<uint8_t>&& x, Vector<uint8_t>&& y, Vector<uint8_t>&& d, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> platformImportSpki(CryptoAlgorithmIdentifier, NamedCurve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);
    static RefPtr<CryptoKeyEC> platformImportPkcs8(CryptoAlgorithmIdentifier, NamedCurve, Vector<uint8_t>&& keyData, bool extractable, CryptoKeyUsageBitmap);
    Vector<uint8_t> platformExportRaw() const;
    bool platformAddFieldElements(JsonWebKey&) const;
    Vector<uint8_t> platformExportSpki() const;
    Vector<uint8_t> platformExportPkcs8() const;

    PlatformECKey m_platformKey;
    NamedCurve m_curve;
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_CRYPTO_KEY(CryptoKeyEC, CryptoKeyClass::EC)

#endif // ENABLE(WEB_CRYPTO)