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/*
* Copyright (C) 2018 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
namespace COSE {
// See RFC 8152 - CBOR Object Signing and Encryption <https://tools.ietf.org/html/rfc8152>
// Labels
const int64_t alg = 3;
const int64_t crv = -1;
const int64_t kty = 1;
const int64_t x = -2;
const int64_t y = -3;
// Values
const int64_t EC2 = 2;
const int64_t ES256 = -7;
const int64_t RS256 = -257;
const int64_t ECDH256 = -25;
const int64_t P_256 = 1;
} // namespace COSE
namespace WebCore {
// Length of the SHA-256 hash of the RP ID asssociated with the credential:
// https://www.w3.org/TR/webauthn/#sec-authenticator-data
const size_t rpIdHashLength = 32;
// Length of the flags:
// https://www.w3.org/TR/webauthn/#sec-authenticator-data
const size_t flagsLength = 1;
// Length of the signature counter, 32-bit unsigned big-endian integer:
// https://www.w3.org/TR/webauthn/#sec-authenticator-data
const size_t signCounterLength = 4;
// Length of the AAGUID of the authenticator:
// https://www.w3.org/TR/webauthn/#sec-attested-credential-data
const size_t aaguidLength = 16;
// Length of the byte length L of Credential ID, 16-bit unsigned big-endian
// integer: https://www.w3.org/TR/webauthn/#sec-attested-credential-data
const size_t credentialIdLengthLength = 2;
// Per Section 2.3.5 of http://www.secg.org/sec1-v2.pdf
const size_t ES256FieldElementLength = 32;
// HMAC-Secret extension output sizes:
// https://fidoalliance.org/specs/fido-v2.1-ps-20210615/fido-client-to-authenticator-protocol-v2.1-ps-20210615.html#sctn-hmac-secret-extension
const size_t hmacSecretOutputLength = 32;
const size_t hmacSecretDualOutputLength = 64;
// https://www.w3.org/TR/webauthn/#none-attestation
const char noneAttestationValue[] = "none";
// https://www.w3.org/TR/webauthn-1/#dom-collectedclientdata-type
enum class ClientDataType : bool {
Create,
Get
};
enum class ShouldZeroAAGUID : bool {
No,
Yes
};
#if defined(__OBJC__)
NSString * const LocalAuthenticatorAccessGroup = @"com.apple.webkit.webauthn";
#endif
// Credential serialization
constexpr const char privateKeyKey[] = "priv";
constexpr const char keyTypeKey[] = "key_type";
constexpr const char keySizeKey[] = "key_size";
constexpr const char relyingPartyKey[] = "rp";
constexpr const char applicationTagKey[] = "tag";
constexpr auto authenticatorTransportUsb = "usb"_s;
constexpr auto authenticatorTransportNfc = "nfc"_s;
constexpr auto authenticatorTransportBle = "ble"_s;
constexpr auto authenticatorTransportInternal = "internal"_s;
constexpr auto authenticatorTransportCable = "cable"_s;
constexpr auto authenticatorTransportSmartCard = "smart-card"_s;
constexpr auto authenticatorTransportHybrid = "hybrid"_s;
} // namespace WebCore
namespace WebAuthn {
enum class Scope {
CrossOrigin,
SameOrigin,
SameSite
};
// https://www.w3.org/TR/webauthn-2/#authenticator-data
constexpr uint8_t userPresenceFlag = 0b00000001;
constexpr uint8_t userVerifiedFlag = 0b00000100;
constexpr uint8_t attestedCredentialDataIncludedFlag = 0b01000000;
constexpr uint8_t extensionDataIncludedFlag = 0b10000000;
// https://github.com/w3c/webauthn/pull/1695
constexpr uint8_t backupEligibilityFlag = 0b00001000;
constexpr uint8_t backupStateFlag = 0b00010000;
} // namespace WebAuthn
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