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author | Emma Miler <emma.pi@protonmail.com> | 2022-12-02 23:00:33 +0100 |
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committer | GitHub <noreply@github.com> | 2022-12-02 23:00:33 +0100 |
commit | 2d59006262d6e45f41ee325af78433475884dca4 (patch) | |
tree | 939c84779bf6a455102c74937f238a0ec05698eb /include/crypto/chacha.h | |
parent | be78dbacc5dcc95e7d9be503d61ceb5de640c661 (diff) | |
download | NorthstarLauncher-2d59006262d6e45f41ee325af78433475884dca4.tar.gz NorthstarLauncher-2d59006262d6e45f41ee325af78433475884dca4.zip |
Move include directory (#337)v1.11.0-rc1
* Move include directory to shared folder
This commit moves the `include` directory from the NorthstarDLL project folder to the solution folder. This allows both the DLL and Launcher project to target it properly.
* Fix filters
* Update memalloc.h
* Fix filters
* Update NorthstarLauncher.vcxproj
* Remove stuff from other PR
* Update NorthstarLauncher.vcxproj
* Update NorthstarLauncher.vcxproj
* Update NorthstarDLL.vcxproj
Diffstat (limited to 'include/crypto/chacha.h')
-rw-r--r-- | include/crypto/chacha.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/crypto/chacha.h b/include/crypto/chacha.h new file mode 100644 index 00000000..d29998ff --- /dev/null +++ b/include/crypto/chacha.h @@ -0,0 +1,43 @@ +/* + * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#ifndef OSSL_CRYPTO_CHACHA_H +#define OSSL_CRYPTO_CHACHA_H +# pragma once + +#include <stddef.h> + +/* + * ChaCha20_ctr32 encrypts |len| bytes from |inp| with the given key and + * nonce and writes the result to |out|, which may be equal to |inp|. + * The |key| is not 32 bytes of verbatim key material though, but the + * said material collected into 8 32-bit elements array in host byte + * order. Same approach applies to nonce: the |counter| argument is + * pointer to concatenated nonce and counter values collected into 4 + * 32-bit elements. This, passing crypto material collected into 32-bit + * elements as opposite to passing verbatim byte vectors, is chosen for + * efficiency in multi-call scenarios. + */ +void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp, + size_t len, const unsigned int key[8], + const unsigned int counter[4]); +/* + * You can notice that there is no key setup procedure. Because it's + * as trivial as collecting bytes into 32-bit elements, it's reckoned + * that below macro is sufficient. + */ +#define CHACHA_U8TOU32(p) ( \ + ((unsigned int)(p)[0]) | ((unsigned int)(p)[1]<<8) | \ + ((unsigned int)(p)[2]<<16) | ((unsigned int)(p)[3]<<24) ) + +#define CHACHA_KEY_SIZE 32 +#define CHACHA_CTR_SIZE 16 +#define CHACHA_BLK_SIZE 64 + +#endif |