1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftCrypto open source project
//
// Copyright (c) 2019-2020 Apple Inc. and the SwiftCrypto project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.md for the list of SwiftCrypto project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
#if CRYPTO_IN_SWIFTPM && !CRYPTO_IN_SWIFTPM_FORCE_BUILD_API
@_exported import CryptoKit
#else
import Foundation
extension P256.KeyAgreement.PrivateKey: HPKEDiffieHellmanPrivateKeyGeneration {
/// Creates a NIST P-256 elliptic curve private key for use with Diffie-Hellman key exchange.
public init() {
self.init(compactRepresentable: false)
}
}
extension P256.KeyAgreement.PublicKey: HPKEDiffieHellmanPublicKey {
/// The type of the ephemeral private key associated with this public key.
public typealias EphemeralPrivateKey = P256.KeyAgreement.PrivateKey
static func validatekem(_ kem: HPKE.KEM) throws {
switch kem {
case .P256_HKDF_SHA256: do {}
default: do {
throw HPKE.Errors.inconsistentCiphersuiteAndKey
}
}
}
/// Creates a NIST P-256 elliptic curve public key for use with Diffie-Hellman key exchange.
///
/// - Parameters:
/// - serialization: The serialized bytes of the public key.
/// - kem: The key encapsulation mechanism to use with the public key.
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public init<D>(_ serialization: D, kem: HPKE.KEM) throws where D: ContiguousBytes {
try Self.validatekem(kem)
try self.init(x963Representation: serialization)
}
/// Creates a serialized representation of the public key.
///
/// - Parameters:
/// - kem: The Key Encapsulation Mechanism to use with the public key.
/// - Returns: The serialized representation of the public key.
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public func hpkeRepresentation(kem: HPKE.KEM) throws -> Data {
try Self.validatekem(kem)
return self.x963Representation
}
/// The type of the ephemeral private key associated with this public key.
public typealias HPKEEphemeralPrivateKey = P256.KeyAgreement.PrivateKey
}
extension P384.KeyAgreement.PrivateKey: HPKEDiffieHellmanPrivateKeyGeneration {
/// Creates a NIST P-384 elliptic curve private key for use with Diffie-Hellman key exchange.
public init() {
self.init(compactRepresentable: false)
}
}
extension P384.KeyAgreement.PublicKey: HPKEDiffieHellmanPublicKey {
/// The type of the ephemeral private key associated with this public key.
public typealias EphemeralPrivateKey = P384.KeyAgreement.PrivateKey
static func validatekem(_ kem: HPKE.KEM) throws {
switch kem {
case .P384_HKDF_SHA384: do {}
default: do {
throw HPKE.Errors.inconsistentCiphersuiteAndKey
}
}
}
/// Creates a NIST P-384 elliptic curve public key for use with Diffie-Hellman key exchange.
///
/// - Parameters:
/// - serialization: The serialized bytes of the public key.
/// - kem: The Key Encapsulation Mechanism to use with the public key.
///
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public init<D>(_ serialization: D, kem: HPKE.KEM) throws where D: ContiguousBytes {
try Self.validatekem(kem)
try self.init(x963Representation: serialization)
}
/// Creates a serialized representation of the public key.
///
/// - Parameters:
/// - kem: The Key Encapsulation Mechanism to use with the public key.
///
/// - Returns: The serialized representation of the public key.
///
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public func hpkeRepresentation(kem: HPKE.KEM) throws -> Data {
try Self.validatekem(kem)
return self.x963Representation
}
}
extension P521.KeyAgreement.PrivateKey: HPKEDiffieHellmanPrivateKeyGeneration {
/// Creates a NIST P-521 elliptic curve private key for use with Diffie-Hellman key exchange.
public init() {
self.init(compactRepresentable: false)
}
}
extension P521.KeyAgreement.PublicKey: HPKEDiffieHellmanPublicKey {
/// The type of the ephemeral private key associated with this public key.
public typealias EphemeralPrivateKey = P521.KeyAgreement.PrivateKey
static func validatekem(_ kem: HPKE.KEM) throws {
switch kem {
case .P521_HKDF_SHA512: do {}
default: do {
throw HPKE.Errors.inconsistentCiphersuiteAndKey
}
}
}
/// Creates a NIST P-521 elliptic curve public key for use with Diffie-Hellman key exchange.
///
/// - Parameters:
/// - serialization: The serialized bytes of the public key.
/// - kem: The Key Encapsulation Mechanism to use with the public key.
///
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public init<D>(_ serialization: D, kem: HPKE.KEM) throws where D: ContiguousBytes {
try Self.validatekem(kem)
try self.init(x963Representation: serialization)
}
/// Creates a serialized representation of the public key.
///
/// - Parameters:
/// - kem: The Key Encapsulation Mechanism to use with the public key.
///
/// - Returns: The serialized representation of the public key.
///
/// - Throws: ``CryptoKit/HPKE/Errors/inconsistentCiphersuiteAndKey`` if the key encapsulation mechanism requested is incompatible with this public key.
public func hpkeRepresentation(kem: HPKE.KEM) throws -> Data {
try Self.validatekem(kem)
return self.x963Representation
}
/// The type of the ephemeral private key associated with this public key.
public typealias HPKEEphemeralPrivateKey = P521.KeyAgreement.PrivateKey
}
#endif // Linux or !SwiftPM
|
