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88 lines
4.2 KiB
C++
88 lines
4.2 KiB
C++
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/***************************************************************************
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* Crypto.h -- The Crypto Class contains miscellaneous methods and helpers *
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* that may be used to provide properties such as authentication, integrity*
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* or confidentiality. *
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* *
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***********************IMPORTANT NMAP LICENSE TERMS************************
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*
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* The Nmap Security Scanner is (C) 1996-2025 Nmap Software LLC ("The Nmap
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* Project"). Nmap is also a registered trademark of the Nmap Project.
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*
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* This program is distributed under the terms of the Nmap Public Source
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* License (NPSL). The exact license text applying to a particular Nmap
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* release or source code control revision is contained in the LICENSE
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* file distributed with that version of Nmap or source code control
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* revision. More Nmap copyright/legal information is available from
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* https://nmap.org/book/man-legal.html, and further information on the
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* NPSL license itself can be found at https://nmap.org/npsl/ . This
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* header summarizes some key points from the Nmap license, but is no
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* substitute for the actual license text.
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*
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* Nmap is generally free for end users to download and use themselves,
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* including commercial use. It is available from https://nmap.org.
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*
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* The Nmap license generally prohibits companies from using and
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* redistributing Nmap in commercial products, but we sell a special Nmap
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* OEM Edition with a more permissive license and special features for
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* this purpose. See https://nmap.org/oem/
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*
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* If you have received a written Nmap license agreement or contract
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* stating terms other than these (such as an Nmap OEM license), you may
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* choose to use and redistribute Nmap under those terms instead.
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*
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* The official Nmap Windows builds include the Npcap software
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* (https://npcap.com) for packet capture and transmission. It is under
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* separate license terms which forbid redistribution without special
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* permission. So the official Nmap Windows builds may not be redistributed
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* without special permission (such as an Nmap OEM license).
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*
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* Source is provided to this software because we believe users have a
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* right to know exactly what a program is going to do before they run it.
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* This also allows you to audit the software for security holes.
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*
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* Source code also allows you to port Nmap to new platforms, fix bugs, and
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* add new features. You are highly encouraged to submit your changes as a
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* Github PR or by email to the dev@nmap.org mailing list for possible
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* incorporation into the main distribution. Unless you specify otherwise, it
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* is understood that you are offering us very broad rights to use your
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* submissions as described in the Nmap Public Source License Contributor
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* Agreement. This is important because we fund the project by selling licenses
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* with various terms, and also because the inability to relicense code has
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* caused devastating problems for other Free Software projects (such as KDE
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* and NASM).
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*
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* The free version of Nmap is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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* indemnification and commercial support are all available through the
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* Npcap OEM program--see https://nmap.org/oem/
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*
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***************************************************************************/
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#ifndef __CRYPTO_H__
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#define __CRYPTO_H__ 1
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#include "nping.h"
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#define HMAC_SHA256_CODE_LEN 32
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#define AES_BLOCK_SIZE 16
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#define AES_KEY_SIZE 16
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#define SHA256_HASH_LEN 32
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class Crypto {
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public:
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Crypto();
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~Crypto();
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void reset();
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static int hmac_sha256(u8 *inbuff, size_t inlen, u8 *dst_buff, u8 *key, size_t key_len);
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static int aes128_cbc_encrypt(u8 *inbuff, size_t inlen, u8 *dst_buff, u8 *key, size_t key_len, u8 *iv);
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static int aes128_cbc_decrypt(u8 *inbuff, size_t inlen, u8 *dst_buff, u8 *key, size_t key_len, u8 *iv);
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static int generateNonce(u8 *dst_buff, size_t bufflen);
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static u8 *deriveKey(const u8 *from, size_t fromlen, size_t *final_len);
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};
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#endif /* __CRYPTO_H__ */
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