// Copyright 2023 The Go Authors. All rights reserved.// Use of this source code is governed by a BSD-style// license that can be found in the LICENSE file.package mlkemimportconst (// CiphertextSize1024 is the size of a ciphertext produced by the 1024-bit // variant of ML-KEM.CiphertextSize1024 = 1568// EncapsulationKeySize1024 is the size of an encapsulation key for the // 1024-bit variant of ML-KEM.EncapsulationKeySize1024 = 1568)// DecapsulationKey1024 is the secret key used to decapsulate a shared key// from a ciphertext. It includes various precomputed values.typeDecapsulationKey1024struct { key *mlkem.DecapsulationKey1024}// GenerateKey1024 generates a new decapsulation key, drawing random bytes from// crypto/rand. The decapsulation key must be kept secret.func () (*DecapsulationKey1024, error) { , := mlkem.GenerateKey1024()if != nil {returnnil, }return &DecapsulationKey1024{}, nil}// NewDecapsulationKey1024 parses a decapsulation key from a 64-byte seed in the// "d || z" form. The seed must be uniformly random.func ( []byte) (*DecapsulationKey1024, error) { , := mlkem.NewDecapsulationKey1024()if != nil {returnnil, }return &DecapsulationKey1024{}, nil}// Bytes returns the decapsulation key as a 64-byte seed in the "d || z" form.//// The decapsulation key must be kept secret.func ( *DecapsulationKey1024) () []byte {return .key.Bytes()}// Decapsulate generates a shared key from a ciphertext and a decapsulation// key. If the ciphertext is not valid, Decapsulate returns an error.//// The shared key must be kept secret.func ( *DecapsulationKey1024) ( []byte) ( []byte, error) {return .key.Decapsulate()}// EncapsulationKey returns the public encapsulation key necessary to produce// ciphertexts.func ( *DecapsulationKey1024) () *EncapsulationKey1024 {return &EncapsulationKey1024{.key.EncapsulationKey()}}// An EncapsulationKey1024 is the public key used to produce ciphertexts to be// decapsulated by the corresponding DecapsulationKey1024.typeEncapsulationKey1024struct { key *mlkem.EncapsulationKey1024}// NewEncapsulationKey1024 parses an encapsulation key from its encoded form. If// the encapsulation key is not valid, NewEncapsulationKey1024 returns an error.func ( []byte) (*EncapsulationKey1024, error) { , := mlkem.NewEncapsulationKey1024()if != nil {returnnil, }return &EncapsulationKey1024{}, nil}// Bytes returns the encapsulation key as a byte slice.func ( *EncapsulationKey1024) () []byte {return .key.Bytes()}// Encapsulate generates a shared key and an associated ciphertext from an// encapsulation key, drawing random bytes from crypto/rand.//// The shared key must be kept secret.func ( *EncapsulationKey1024) () (, []byte) {return .key.Encapsulate()}
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