626c184f77
This adds AES256 test of encryption and decryption - an example on how the Encrypt and Decrypt classes are used. Also add a convenience function for Hash, accepting vector of bytes as this is used in a lot of places. Change-Id: I9b395c7afb8fac45cae8d7d8bd983f5daaafd64b Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176887 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef INCLUDED_COMPHELPER_HASH_HXX
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#define INCLUDED_COMPHELPER_HASH_HXX
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#include <comphelper/comphelperdllapi.h>
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#include <rtl/digest.h>
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#include <memory>
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#include <string>
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#include <vector>
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namespace rtl {
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class OUString;
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}
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namespace comphelper {
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enum class HashType
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{
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MD5,
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SHA1,
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SHA256,
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SHA384,
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SHA512
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};
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const sal_uInt32 MD5_HASH_LENGTH = RTL_DIGEST_LENGTH_MD5;
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const sal_uInt32 SHA1_HASH_LENGTH = RTL_DIGEST_LENGTH_SHA1;
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const sal_uInt32 SHA256_HASH_LENGTH = 32;
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const sal_uInt32 SHA384_HASH_LENGTH = 48;
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const sal_uInt32 SHA512_HASH_LENGTH = 64;
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struct HashImpl;
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COMPHELPER_DLLPUBLIC std::string hashToString(const std::vector<unsigned char>& rHash);
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class COMPHELPER_DLLPUBLIC Hash
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{
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private:
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std::unique_ptr<HashImpl> mpImpl;
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public:
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enum class IterCount
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{
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NONE, /// Iteration count not added to hash iterations.
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PREPEND, /// Iteration count prepended to hash iterations.
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APPEND /// Iteration count appended to hash iterations.
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};
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Hash(HashType eType);
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~Hash();
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void update(const unsigned char* pInput, size_t length);
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void update(std::vector<unsigned char> const& rInput)
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{
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update(rInput.data(), rInput.size());
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}
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std::vector<unsigned char> finalize();
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static std::vector<unsigned char> calculateHash(const unsigned char* pInput, size_t length, HashType eType);
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/** Calculate hash value with salt (pSalt,nSaltLen) prepended to password
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(pInput,nLength) and repeated iterations run if nSpinCount>0.
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This implements the algorithms as specified in
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https://msdn.microsoft.com/en-us/library/dd920692 or
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https://msdn.microsoft.com/en-us/library/dd924776 and
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https://msdn.microsoft.com/en-us/library/dd925430
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@param pSalt
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may be nullptr thus no salt prepended
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@param nSpinCount
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If >0, repeat nSpinCount iterations. For each iteration, the
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previous iteration's result plus a 4 byte value (0-based,
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little endian) containing the number of the iteration prepended
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or appended to the hash value is the input for the next
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iteration.
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@param eIterCount
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If IterCount::APPEND, append iteration count as per
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https://msdn.microsoft.com/en-us/library/dd920692
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If IterCount::PREPEND, prepend iteration count as per
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https://msdn.microsoft.com/en-us/library/dd924776 and
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https://msdn.microsoft.com/en-us/library/dd925430
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If IterCount::NONE, do not add the iteration count to hash
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iterations.
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@return the raw hash value
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*/
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static std::vector<unsigned char> calculateHash(
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const unsigned char* pInput, size_t nLength,
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const unsigned char* pSalt, size_t nSaltLen,
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sal_uInt32 nSpinCount,
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IterCount eIterCount,
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HashType eType);
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/** Convenience function to calculate a salted hash with iterations.
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@param rPassword
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UTF-16 encoded string, hashed byte-wise as unsigned char.
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@param rSaltValue
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Salt that will be prepended to password data.
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*/
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static std::vector<unsigned char> calculateHash(
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const rtl::OUString& rPassword,
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const std::vector<unsigned char>& rSaltValue,
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sal_uInt32 nSpinCount,
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IterCount eIterCount,
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HashType eType);
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size_t getLength() const;
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};
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}
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#endif // INCLUDED_COMPHELPER_HASH_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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