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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:54:39 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:54:39 +0000 |
commit | 267c6f2ac71f92999e969232431ba04678e7437e (patch) | |
tree | 358c9467650e1d0a1d7227a21dac2e3d08b622b2 /include/comphelper/hash.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip |
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/comphelper/hash.hxx')
-rw-r--r-- | include/comphelper/hash.hxx | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/include/comphelper/hash.hxx b/include/comphelper/hash.hxx new file mode 100644 index 0000000000..a3ad468d3e --- /dev/null +++ b/include/comphelper/hash.hxx @@ -0,0 +1,123 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#ifndef INCLUDED_COMPHELPER_HASH_HXX +#define INCLUDED_COMPHELPER_HASH_HXX + +#include <comphelper/comphelperdllapi.h> +#include <rtl/digest.h> + +#include <memory> +#include <vector> + +namespace rtl { + class OUString; +} + +namespace comphelper { + +enum class HashType +{ + MD5, + SHA1, + SHA256, + SHA384, + SHA512 +}; + +const sal_uInt32 MD5_HASH_LENGTH = RTL_DIGEST_LENGTH_MD5; +const sal_uInt32 SHA1_HASH_LENGTH = RTL_DIGEST_LENGTH_SHA1; +const sal_uInt32 SHA256_HASH_LENGTH = 32; +const sal_uInt32 SHA384_HASH_LENGTH = 48; +const sal_uInt32 SHA512_HASH_LENGTH = 64; + +struct HashImpl; + +class COMPHELPER_DLLPUBLIC Hash +{ +private: + std::unique_ptr<HashImpl> mpImpl; + +public: + + enum class IterCount + { + NONE, /// Iteration count not added to hash iterations. + PREPEND, /// Iteration count prepended to hash iterations. + APPEND /// Iteration count appended to hash iterations. + }; + + Hash(HashType eType); + ~Hash(); + + void update(const unsigned char* pInput, size_t length); + + std::vector<unsigned char> finalize(); + + static std::vector<unsigned char> calculateHash(const unsigned char* pInput, size_t length, HashType eType); + + /** Calculate hash value with salt (pSalt,nSaltLen) prepended to password + (pInput,nLength) and repeated iterations run if nSpinCount>0. + + This implements the algorithms as specified in + https://msdn.microsoft.com/en-us/library/dd920692 or + https://msdn.microsoft.com/en-us/library/dd924776 and + https://msdn.microsoft.com/en-us/library/dd925430 + + @param pSalt + may be nullptr thus no salt prepended + + @param nSpinCount + If >0, repeat nSpinCount iterations. For each iteration, the + previous iteration's result plus a 4 byte value (0-based, + little endian) containing the number of the iteration prepended + or appended to the hash value is the input for the next + iteration. + + @param eIterCount + If IterCount::APPEND, append iteration count as per + https://msdn.microsoft.com/en-us/library/dd920692 + If IterCount::PREPEND, prepend iteration count as per + https://msdn.microsoft.com/en-us/library/dd924776 and + https://msdn.microsoft.com/en-us/library/dd925430 + If IterCount::NONE, do not add the iteration count to hash + iterations. + + @return the raw hash value + */ + static std::vector<unsigned char> calculateHash( + const unsigned char* pInput, size_t nLength, + const unsigned char* pSalt, size_t nSaltLen, + sal_uInt32 nSpinCount, + IterCount eIterCount, + HashType eType); + + /** Convenience function to calculate a salted hash with iterations. + + @param rPassword + UTF-16 encoded string, hashed byte-wise as unsigned char. + + @param rSaltValue + Salt that will be prepended to password data. + */ + static std::vector<unsigned char> calculateHash( + const rtl::OUString& rPassword, + const std::vector<unsigned char>& rSaltValue, + sal_uInt32 nSpinCount, + IterCount eIterCount, + HashType eType); + + size_t getLength() const; +}; + +} + +#endif // INCLUDED_COMPHELPER_HASH_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |