8e79f2ee9c
Based on Nekogram. Key additions: - Rebrand to FoxiGram (app name, APK name, applicationId com.foxigram.app) - Embedded Xray (VLESS+Reality) proxy client via JNI libxray.so - Bundled hidden one-tap proxies (LTE + WiFi), read-only in UI - Auto-restore proxy on restart, rebind to active network (LTE/WiFi) - Server credentials externalized to git-ignored XrayServers.java (+ template) - libxray Go source included; compiled .so, keystore, google-services.json ignored
222 lines
9.1 KiB
C
222 lines
9.1 KiB
C
// Copyright 2024 The BoringSSL Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef OPENSSL_HEADER_MLKEM_H
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#define OPENSSL_HEADER_MLKEM_H
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#include <openssl/base.h> // IWYU pragma: export
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#if defined(__cplusplus)
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extern "C" {
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#endif
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// ML-KEM-768.
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//
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// This implements the Module-Lattice-Based Key-Encapsulation Mechanism from
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// https://csrc.nist.gov/pubs/fips/204/final
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// MLKEM768_public_key contains an ML-KEM-768 public key. The contents of this
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// object should never leave the address space since the format is unstable.
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struct MLKEM768_public_key {
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union {
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uint8_t bytes[512 * (3 + 9) + 32 + 32];
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uint16_t alignment;
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} opaque;
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};
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// MLKEM768_private_key contains an ML-KEM-768 private key. The contents of this
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// object should never leave the address space since the format is unstable.
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struct MLKEM768_private_key {
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union {
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uint8_t bytes[512 * (3 + 3 + 9) + 32 + 32 + 32];
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uint16_t alignment;
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} opaque;
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};
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// MLKEM768_PUBLIC_KEY_BYTES is the number of bytes in an encoded ML-KEM-768
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// public key.
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#define MLKEM768_PUBLIC_KEY_BYTES 1184
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// MLKEM_SEED_BYTES is the number of bytes in an ML-KEM seed.
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#define MLKEM_SEED_BYTES 64
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// MLKEM768_generate_key generates a random public/private key pair, writes the
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// encoded public key to |out_encoded_public_key| and sets |out_private_key| to
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// the private key. If |optional_out_seed| is not NULL then the seed used to
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// generate the private key is written to it.
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OPENSSL_EXPORT void MLKEM768_generate_key(
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uint8_t out_encoded_public_key[MLKEM768_PUBLIC_KEY_BYTES],
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uint8_t optional_out_seed[MLKEM_SEED_BYTES],
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struct MLKEM768_private_key *out_private_key);
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// MLKEM768_private_key_from_seed derives a private key from a seed that was
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// generated by |MLKEM768_generate_key|. It fails and returns 0 if |seed_len| is
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// incorrect, otherwise it writes |*out_private_key| and returns 1.
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OPENSSL_EXPORT int MLKEM768_private_key_from_seed(
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struct MLKEM768_private_key *out_private_key, const uint8_t *seed,
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size_t seed_len);
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// MLKEM768_public_from_private sets |*out_public_key| to the public key that
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// corresponds to |private_key|. (This is faster than parsing the output of
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// |MLKEM768_generate_key| if, for some reason, you need to encapsulate to a key
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// that was just generated.)
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OPENSSL_EXPORT void MLKEM768_public_from_private(
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struct MLKEM768_public_key *out_public_key,
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const struct MLKEM768_private_key *private_key);
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// MLKEM768_CIPHERTEXT_BYTES is number of bytes in the ML-KEM-768 ciphertext.
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#define MLKEM768_CIPHERTEXT_BYTES 1088
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// MLKEM_SHARED_SECRET_BYTES is the number of bytes in an ML-KEM shared secret.
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#define MLKEM_SHARED_SECRET_BYTES 32
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// MLKEM768_encap encrypts a random shared secret for |public_key|, writes the
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// ciphertext to |out_ciphertext|, and writes the random shared secret to
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// |out_shared_secret|.
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OPENSSL_EXPORT void MLKEM768_encap(
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uint8_t out_ciphertext[MLKEM768_CIPHERTEXT_BYTES],
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uint8_t out_shared_secret[MLKEM_SHARED_SECRET_BYTES],
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const struct MLKEM768_public_key *public_key);
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// MLKEM768_decap decrypts a shared secret from |ciphertext| using |private_key|
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// and writes it to |out_shared_secret|. If |ciphertext_len| is incorrect it
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// returns 0, otherwise it returns 1. If |ciphertext| is invalid (but of the
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// correct length), |out_shared_secret| is filled with a key that will always be
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// the same for the same |ciphertext| and |private_key|, but which appears to be
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// random unless one has access to |private_key|. These alternatives occur in
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// constant time. Any subsequent symmetric encryption using |out_shared_secret|
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// must use an authenticated encryption scheme in order to discover the
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// decapsulation failure.
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OPENSSL_EXPORT int MLKEM768_decap(
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uint8_t out_shared_secret[MLKEM_SHARED_SECRET_BYTES],
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const uint8_t *ciphertext, size_t ciphertext_len,
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const struct MLKEM768_private_key *private_key);
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// Serialisation of keys.
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// MLKEM768_marshal_public_key serializes |public_key| to |out| in the standard
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// format for ML-KEM-768 public keys. It returns one on success or zero on
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// allocation error.
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OPENSSL_EXPORT int MLKEM768_marshal_public_key(
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CBB *out, const struct MLKEM768_public_key *public_key);
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// MLKEM768_parse_public_key parses a public key, in the format generated by
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// |MLKEM768_marshal_public_key|, from |in| and writes the result to
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// |out_public_key|. It returns one on success or zero on parse error or if
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// there are trailing bytes in |in|.
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OPENSSL_EXPORT int MLKEM768_parse_public_key(
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struct MLKEM768_public_key *out_public_key, CBS *in);
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// ML-KEM-1024
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//
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// ML-KEM-1024 also exists. You should prefer ML-KEM-768 where possible.
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// MLKEM1024_public_key contains an ML-KEM-1024 public key. The contents of this
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// object should never leave the address space since the format is unstable.
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struct MLKEM1024_public_key {
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union {
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uint8_t bytes[512 * (4 + 16) + 32 + 32];
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uint16_t alignment;
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} opaque;
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};
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// MLKEM1024_private_key contains a ML-KEM-1024 private key. The contents of
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// this object should never leave the address space since the format is
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// unstable.
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struct MLKEM1024_private_key {
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union {
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uint8_t bytes[512 * (4 + 4 + 16) + 32 + 32 + 32];
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uint16_t alignment;
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} opaque;
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};
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// MLKEM1024_PUBLIC_KEY_BYTES is the number of bytes in an encoded ML-KEM-1024
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// public key.
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#define MLKEM1024_PUBLIC_KEY_BYTES 1568
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// MLKEM1024_generate_key generates a random public/private key pair, writes the
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// encoded public key to |out_encoded_public_key| and sets |out_private_key| to
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// the private key. If |optional_out_seed| is not NULL then the seed used to
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// generate the private key is written to it.
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OPENSSL_EXPORT void MLKEM1024_generate_key(
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uint8_t out_encoded_public_key[MLKEM1024_PUBLIC_KEY_BYTES],
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uint8_t optional_out_seed[MLKEM_SEED_BYTES],
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struct MLKEM1024_private_key *out_private_key);
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// MLKEM1024_private_key_from_seed derives a private key from a seed that was
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// generated by |MLKEM1024_generate_key|. It fails and returns 0 if |seed_len|
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// is incorrect, otherwise it writes |*out_private_key| and returns 1.
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OPENSSL_EXPORT int MLKEM1024_private_key_from_seed(
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struct MLKEM1024_private_key *out_private_key, const uint8_t *seed,
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size_t seed_len);
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// MLKEM1024_public_from_private sets |*out_public_key| to the public key that
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// corresponds to |private_key|. (This is faster than parsing the output of
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// |MLKEM1024_generate_key| if, for some reason, you need to encapsulate to a
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// key that was just generated.)
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OPENSSL_EXPORT void MLKEM1024_public_from_private(
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struct MLKEM1024_public_key *out_public_key,
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const struct MLKEM1024_private_key *private_key);
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// MLKEM1024_CIPHERTEXT_BYTES is number of bytes in the ML-KEM-1024 ciphertext.
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#define MLKEM1024_CIPHERTEXT_BYTES 1568
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// MLKEM1024_encap encrypts a random shared secret for |public_key|, writes the
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// ciphertext to |out_ciphertext|, and writes the random shared secret to
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// |out_shared_secret|.
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OPENSSL_EXPORT void MLKEM1024_encap(
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uint8_t out_ciphertext[MLKEM1024_CIPHERTEXT_BYTES],
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uint8_t out_shared_secret[MLKEM_SHARED_SECRET_BYTES],
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const struct MLKEM1024_public_key *public_key);
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// MLKEM1024_decap decrypts a shared secret from |ciphertext| using
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// |private_key| and writes it to |out_shared_secret|. If |ciphertext_len| is
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// incorrect it returns 0, otherwise it returns 1. If |ciphertext| is invalid
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// (but of the correct length), |out_shared_secret| is filled with a key that
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// will always be the same for the same |ciphertext| and |private_key|, but
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// which appears to be random unless one has access to |private_key|. These
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// alternatives occur in constant time. Any subsequent symmetric encryption
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// using |out_shared_secret| must use an authenticated encryption scheme in
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// order to discover the decapsulation failure.
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OPENSSL_EXPORT int MLKEM1024_decap(
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uint8_t out_shared_secret[MLKEM_SHARED_SECRET_BYTES],
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const uint8_t *ciphertext, size_t ciphertext_len,
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const struct MLKEM1024_private_key *private_key);
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// Serialisation of ML-KEM-1024 keys.
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// MLKEM1024_marshal_public_key serializes |public_key| to |out| in the standard
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// format for ML-KEM-1024 public keys. It returns one on success or zero on
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// allocation error.
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OPENSSL_EXPORT int MLKEM1024_marshal_public_key(
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CBB *out, const struct MLKEM1024_public_key *public_key);
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// MLKEM1024_parse_public_key parses a public key, in the format generated by
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// |MLKEM1024_marshal_public_key|, from |in| and writes the result to
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// |out_public_key|. It returns one on success or zero on parse error or if
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// there are trailing bytes in |in|.
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OPENSSL_EXPORT int MLKEM1024_parse_public_key(
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struct MLKEM1024_public_key *out_public_key, CBS *in);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_MLKEM_H
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