/usr/include/freefoam/OpenFOAM/SHA1.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Class
Foam::SHA1
Description
Functions to compute SHA1 message digest according to the NIST
specification FIPS-180-1.
Adapted from the gnulib implementation.
SeeAlso
Foam::SHA1Digest
SourceFiles
SHA1I.H
SHA1.C
\*---------------------------------------------------------------------------*/
#ifndef SHA1_H
#define SHA1_H
#include <string>
#include <cstddef>
#include <stdint.h> // C++0x uses <cstdint>
#include "SHA1Digest.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// Forward declaration of classes
class Ostream;
// Forward declaration of friend functions and operators
class SHA1;
class SHA1Digest;
Ostream& operator<<(Ostream&, const SHA1&);
/*---------------------------------------------------------------------------*\
Class SHA1 Declaration
\*---------------------------------------------------------------------------*/
class SHA1
{
// Private data
//- Track if the hashsum has been finalized (added count, etc)
bool finalized_;
//- The hash sums
uint32_t hashsumA_;
uint32_t hashsumB_;
uint32_t hashsumC_;
uint32_t hashsumD_;
uint32_t hashsumE_;
//- The total number processed, saved as 64-bit
uint32_t bufTotal_[2];
//- The number of elements pending in the buffer
uint32_t bufLen_;
//- The input processing buffer
uint32_t buffer_[32];
// Private Member Functions
//- Swap bytes from internal to network (big-endian) order
static inline uint32_t swapBytes(uint32_t);
//- Copy the 4-byte value into the memory location pointed to by *dst.
// If the architecture allows unaligned access this is equivalent to
// *(uint32_t *) cp = val
static inline void set_uint32(unsigned char *cp, uint32_t);
//- Process data block-wise, LEN must be a multiple of 64!
void processBlock(const void *data, size_t len);
//- Process for the next LEN bytes, LEN need not be a multiple of 64.
void processBytes(const void *data, size_t len);
//- Calculate current digest from appended data.
void calcDigest(SHA1Digest&) const;
public:
// Constructors
//- Construct null
inline SHA1();
//- Construct and append initial std::string
explicit inline SHA1(const std::string&);
//- Construct and append initial string
explicit inline SHA1(const char*);
// Member Functions
//- Reset the hashed data before appending more
void clear();
//- Append data for processing
inline SHA1& append(const char* data, size_t len);
//- Append string for processing
inline SHA1& append(const std::string&);
//- Append string for processing
inline SHA1& append(const char* str);
//- Finalized the calculations (normally not needed directly).
// Returns false if no bytes were passed for processing
bool finalize();
//- Calculate current digest from appended data.
SHA1Digest digest() const;
// Member Operators
//- Equality operator
inline bool operator==(const SHA1Digest&) const;
//- Inequality operator
inline bool operator!=(const SHA1Digest&) const;
//- Equality operator
inline bool operator==(const SHA1&) const;
//- Inequality operator
inline bool operator!=(const SHA1&) const;
//- Convert to a digest, calculate current digest from appended data.
inline operator SHA1Digest() const;
// Friend Functions
// Friend Operators
inline friend Ostream& operator<<(Ostream&, const SHA1&);
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#include "SHA1I.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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