[Olena-patches] oln 10.98: Md5.

Index: integre/ChangeLog from Giovanni Palma &lt;giovanni(a)lrde.epita.fr&gt; * ntg/core/macros.hh: Add ntg_nbits macro. Index: olena/ChangeLog from Giovanni Palma &lt;giovanni(a)lrde.epita.fr&gt; * oln/utils/buffer.hxx: Add file. * oln/utils/buffer.hh: Likewise. * oln/utils/key.hh: Likewise. * oln/utils/key.hxx: Likewise. * oln/utils/md5.hh: Likewise. * oln/utils/md5.hxx: Likewise. +2004-03-19 Giovanni Palma &lt;giovanni(a)lrde.epita.fr&gt; + * oln/convol/fast_gaussian.hh: Correct comments. * oln/io/se_window.hh: Likewise. * oln/transforms/dwt.hh: Likewise. Index: integre/ntg/core/macros.hh --- integre/ntg/core/macros.hh Sat, 03 Jan 2004 17:25:53 +0100 burrus_n (oln/s/19_macros.hh 1.9 640) +++ integre/ntg/core/macros.hh Fri, 19 Mar 2004 15:03:05 +0100 palma_g (oln/s/19_macros.hh 1.9 640) @@ -154,4 +154,10 @@ // FIXME: reimplement when variadic macros will be allowed. # define ntg_get_value_type(T, E) ntg::type_traits<T>::build_value_type<E> + +/* ----. +| Misc | +`-----*/ +#define ntg_nbits(T) ntg::internal::typetraits<T>::size + #endif // !NTG_CORE_MACROS_HH Index: olena/oln/utils/buffer.hxx --- olena/oln/utils/buffer.hxx Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/buffer.hxx Fri, 19 Mar 2004 15:48:04 +0100 palma_g (oln/k/9_buffer.hxx 644) @@ -0,0 +1,167 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_OLN_UTILS_BUFFER_HXX +# define OLENA_OLN_UTILS_BUFFER_HXX + +// Ctor implementation +inline +buffer::buffer(): current_bit_(0), + data_(), + len1_(ntg_zero_val(value_type)), + len2_(ntg_zero_val(value_type)), + padding_appended_(false), + length_appended_(false) +{ + data_.reserve(length_); + data_.push_back(ntg_zero_val(value_type)); +}; + +// add implementation +template <class E> +inline +void buffer::add(const E &e, bool count) +{ + ntg_storage_type(E) mask = 1 << (ntg_nbits(E) - 1); + ntg_storage_type(E) e_cast = e; + + while (mask) + { + push_back(e_cast & mask, !count); + mask >>= 1; + } +}; + +// push_back implementation +inline +void buffer::push_back(bool bit, bool is_padding) +{ + precondition(current_bit_ < 32); + + current_bit_ += 1; + data_.back() *= 2; + if (bit) + data_.back() += ntg_unit_val(value_type); + if (current_bit_ == 32) + { + if (data_.size() == data_.capacity()) + data_.reserve(data_.capacity() + length_); + current_bit_ = 0; + data_.push_back(ntg_zero_val(value_type)); + } + if (!is_padding) + { + if (len1_ == ntg_max_val(value_type)) + { + if (len2_ == ntg_max_val(value_type)) + len2_ = ntg_unit_val(value_type); + else + len2_ += ntg_unit_val(value_type); + } + len1_ += ntg_unit_val(value_type); + } +} + +// reorder implementation +inline +buffer::value_type buffer::reorder(value_type x) const +{ + ntg_storage_type_(value_type) r = 0; + ntg_storage_type_(value_type) mask = 0xFF; + + for (unsigned i = 0; i < (sizeof(ntg_storage_type_(value_type))); ++i) + { + r <<= 8; + r |= (mask & ntg_storage_type_(value_type)(x)) >> (i * 8); + mask <<= 8; + } + return r; +} + +// [] operator implementation +inline +ntg::int_u32 buffer::operator[] (unsigned n) const +{ + precondition(n < data_.size()); + + return reorder(data_[n]); +}; + +// append padding implementation +inline +void buffer::append_padding() +{ + push_back(true, true); + while (((data_.size() * 32) % 512) != 448) + push_back(false, true); + padding_appended_ = true; +}; + +// append_length implementation +inline +void buffer::append_length() +{ + precondition(padding_appended_); + + add(reorder(len2_), false); + add(reorder(len1_), false); + std::cout << len2_ << len1_<< std::endl; + std::cout << (*this)[data_.size()-2] << (*this)[data_.size()-1] << std::endl; + std::cout << data_.size() - 1<< std::endl; + std::cout << (*this)[14]<< std::endl; + length_appended_ = true; +}; + +// size implementation. +inline +unsigned buffer::size() const +{ + return data_.size(); +}; + +// bit len implementation. +inline +unsigned buffer::bit_len() const +{ + return data_.size() * 32; +} + +// is_append_padding implementation. +inline +bool buffer::is_append_padding() const +{ + return padding_appended_; +} + +// is append_length implementation. +inline +bool buffer::is_append_length() const +{ + return length_appended_; +} + +#endif // !OLENA_OLN_UTILS_BUFFER_HXX Index: olena/oln/utils/buffer.hh --- olena/oln/utils/buffer.hh Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/buffer.hh Fri, 19 Mar 2004 15:47:36 +0100 palma_g (oln/k/10_buffer.hh 644) @@ -0,0 +1,125 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + + +#ifndef OLENA_OLN_UTILS_BUFFER_HH +# define OLENA_OLN_UTILS_BUFFER_HH + + +namespace oln { + namespace utils { + /*! + ** \brief Buffer used for MD5 data type abstraction. + */ + class buffer + { + public: + typedef ntg::int_u32 value_type; ///< Used data type. + + /*! + ** \brief Initialization of data. + */ + buffer(); + + /*! + ** \brief Add every bits of e in data. + ** + ** \arg e Element to work on. + ** \arg count Tell if you want to count e size in the buffer size. + */ + template <class E> + void add(const E &e, bool count = true); + + /*! + ** \brief Push back a bit at the end of the buffer. + ** + ** true -> push back a 1\n + ** false -> push back a 0\n + ** + ** \arg bit Bit to push. + ** \arg is_padding Are you adding padding bytes ? + */ + void push_back(bool bit, bool is_padding = false); + + /*! + ** \brief Return the nth word. + */ + ntg::int_u32 operator[] (unsigned n) const; + + /*! + ** \brief Append padding bits. + */ + void append_padding(); + + /*! + ** \brief Append length. + */ + void append_length(); + + /*! + ** \brief Return the number of words. + */ + unsigned size() const; + + /*! + ** \brief Return the length in bits. + */ + unsigned bit_len() const; + + /*! + ** \brief Tell if the buffer has already been padded. + */ + bool is_append_padding() const; + + /*! + ** \brief Tell if the length has already been appended. + */ + bool is_append_length() const; + + protected: + /*! + ** \brief Change order of data in a word. + ** + ** \arg x Data to reorder. + */ + value_type reorder(value_type x) const; + + static const unsigned length_ = 100; ///< Capacity chunk. + /// Number of the current bit in the current word. + unsigned char current_bit_; + std::vector<value_type> data_; ///< The buffer data. + value_type len1_; ///< first word length + value_type len2_; ///< second word length + bool padding_appended_; ///< Status of padding. + bool length_appended_; ///< Status of length appending. + }; + +# include <oln/utils/buffer.hxx> + + } // !utils +} // !oln +#endif // !OLENA_OLN_UTILS_BUFFER_HH Index: olena/oln/utils/key.hxx --- olena/oln/utils/key.hxx Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/key.hxx Fri, 19 Mar 2004 15:45:46 +0100 palma_g (oln/k/11_key.hxx 644) @@ -0,0 +1,72 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_OLN_UTILS_KEY_HXX +# define OLENA_OLN_UTILS_KEY_HXX + +// Ctor implementation. +inline +key::key(const std::vector<value_type> &data) +{ + for (unsigned i = 0; i < 16; ++i) + data_[i] = data[i]; +} + +// [] operator implementation +inline +key::value_type &key::operator[](unsigned i) +{ + precondition(i < 16); + return data_[i]; +}; + +// [] operator +inline +const key::value_type &key::operator[](unsigned i) const +{ + precondition(i < 16); + return data_[i]; +}; + +// == operator +inline +bool key::operator ==(const key &k) +{ + for (unsigned i = 0; i < 16; ++i) + if (data_[i] != k[i]) + return false; + return true; +} + +// != operator +inline +bool key::operator !=(const key &k) +{ + return !(*this == k); +} + +#endif // !OLENA_OLN_UTILS_KEY_HXX Index: olena/oln/utils/key.hh --- olena/oln/utils/key.hh Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/key.hh Fri, 19 Mar 2004 15:35:37 +0100 palma_g (oln/k/12_key.hh 644) @@ -0,0 +1,112 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_OLN_UTILS_KEY_HH +# define OLENA_OLN_UTILS_KEY_HH +# include <ntg/all.hh> +# include <vector> +# include <iostream> + +namespace oln { + namespace utils { + /*! + ** \brief 16 bytes key + ** + ** Object to have a nice representation of a MD5 result. + */ + class key + { + public: + typedef ntg::int_u8 value_type; ///< Used data type. + + /*! + ** \brief Constructor used to initialize the key. + ** + ** \pre There must at least 16 elements in data. + ** \arg data Inuput data. + */ + explicit key(const std::vector<value_type> &data); + + /*! + ** \brief [] operator. + ** + ** \return the ith byte of the key. + ** + ** \arg i Index of the byte wanted. + ** + ** This is the non const version of the operator. + */ + value_type &operator[](unsigned i); + + /*! + ** \brief [] operator. + ** + ** \return the ith byte of the key. + ** + ** \arg i Index of the byte wanted. + ** + ** This is the const version of the operator. + */ + const value_type &operator[](unsigned i) const; + + /*! + ** \brief Check equality between two keys. + ** + ** \arg k Key to be compared with. + */ + bool operator ==(const key &k); + + /*! + ** \brief Check whether two key are different. + ** + ** \arg k Key to be compared with. + */ + bool operator !=(const key &k); + + /*! + ** \brief Write of representation of the key on a stream. + ** + ** stream Stream to put the key on. + ** k Key to represent. + */ + friend std::ostream &operator<<(std::ostream &stream, const key &k) + { + for (unsigned i = 0; i < 16; ++i) + stream << std::hex << k[i]; + return stream; + } + + + protected: + value_type data_[16]; ///< Internal data. + }; + +# include <oln/utils/key.hxx> + + } // !utils +} // !oln +#endif // !OLENA_OLN_UTILS_KEY_HH Index: olena/oln/utils/md5.hxx --- olena/oln/utils/md5.hxx Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/md5.hxx Fri, 19 Mar 2004 15:35:26 +0100 palma_g (oln/k/13_md5.hxx 644) @@ -0,0 +1,284 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_OLN_UTILS_MD5_HXX +# define OLENA_OLN_UTILS_MD5_HXX + +// Ctor. +inline +MD5::MD5(buffer b): buffer_(b), + X(16), + T(), + current_(0), + a(0x67452301), + b(0xefcdab89), + c(0x98badcfe), + d(0x10325476) + // a(0x01234567), + // b(0x89abcdef), + // c(0xfedcba98), + // d(0x76543210) +{ + precondition(buffer_.is_append_padding()); + precondition(buffer_.is_append_length()); + T.reserve(64); + T.push_back(0xd76aa478); /* 1 */ + T.push_back(0xe8c7b756); /* 2 */ + T.push_back(0x242070db); /* 3 */ + T.push_back(0xc1bdceee); /* 4 */ + T.push_back(0xf57c0faf); /* 5 */ + T.push_back(0x4787c62a); /* 6 */ + T.push_back(0xa8304613); /* 7 */ + T.push_back(0xfd469501); /* 8 */ + T.push_back(0x698098d8); /* 9 */ + T.push_back(0x8b44f7af); /* 10 */ + T.push_back(0xffff5bb1); /* 11 */ + T.push_back(0x895cd7be); /* 12 */ + T.push_back(0x6b901122); /* 13 */ + T.push_back(0xfd987193); /* 14 */ + T.push_back(0xa679438e); /* 15 */ + T.push_back(0x49b40821); /* 16 */ + T.push_back(0xf61e2562); /* 17 */ + T.push_back(0xc040b340); /* 18 */ + T.push_back(0x265e5a51); /* 19 */ + T.push_back(0xe9b6c7aa); /* 20 */ + T.push_back(0xd62f105d); /* 21 */ + T.push_back(0x2441453); /* 22 */ + T.push_back(0xd8a1e681); /* 23 */ + T.push_back(0xe7d3fbc8); /* 24 */ + T.push_back(0x21e1cde6); /* 25 */ + T.push_back(0xc33707d6); /* 26 */ + T.push_back(0xf4d50d87); /* 27 */ + T.push_back(0x455a14ed); /* 28 */ + T.push_back(0xa9e3e905); /* 29 */ + T.push_back(0xfcefa3f8); /* 30 */ + T.push_back(0x676f02d9); /* 31 */ + T.push_back(0x8d2a4c8a); /* 32 */ + T.push_back(0xfffa3942); /* 33 */ + T.push_back(0x8771f681); /* 34 */ + T.push_back(0x6d9d6122); /* 35 */ + T.push_back(0xfde5380c); /* 36 */ + T.push_back(0xa4beea44); /* 37 */ + T.push_back(0x4bdecfa9); /* 38 */ + T.push_back(0xf6bb4b60); /* 39 */ + T.push_back(0xbebfbc70); /* 40 */ + T.push_back(0x289b7ec6); /* 41 */ + T.push_back(0xeaa127fa); /* 42 */ + T.push_back(0xd4ef3085); /* 43 */ + T.push_back(0x4881d05); /* 44 */ + T.push_back(0xd9d4d039); /* 45 */ + T.push_back(0xe6db99e5); /* 46 */ + T.push_back(0x1fa27cf8); /* 47 */ + T.push_back(0xc4ac5665); /* 48 */ + T.push_back(0xf4292244); /* 49 */ + T.push_back(0x432aff97); /* 50 */ + T.push_back(0xab9423a7); /* 51 */ + T.push_back(0xfc93a039); /* 52 */ + T.push_back(0x655b59c3); /* 53 */ + T.push_back(0x8f0ccc92); /* 54 */ + T.push_back(0xffeff47d); /* 55 */ + T.push_back(0x85845dd1); /* 56 */ + T.push_back(0x6fa87e4f); /* 57 */ + T.push_back(0xfe2ce6e0); /* 58 */ + T.push_back(0xa3014314); /* 59 */ + T.push_back(0x4e0811a1); /* 60 */ + T.push_back(0xf7537e82); /* 61 */ + T.push_back(0xbd3af235); /* 62 */ + T.push_back(0x2ad7d2bb); /* 63 */ + T.push_back(0xeb86d391); /* 64 */ +}; + +// sav() implementation. +inline +void MD5::sav() +{ + for (unsigned i = 0; i < 16; ++i) + X[i] = buffer_[current_ + i]; + current_ += 16; + aa = a; + bb = b; + cc = c; + dd = d; +} + +// round1() implementation. +inline +void MD5::round1() +{ + sub_step(F, a, b, c, d, 0, 7, 1); + sub_step(F, d, a, b, c, 1, 12, 2); + sub_step(F, c, d, a, b, 2, 17, 3); + sub_step(F, b, c, d, a, 3, 22, 4); + sub_step(F, a, b, c, d, 4, 7, 5); + sub_step(F, d, a, b, c, 5, 12, 6); + sub_step(F, c, d, a, b, 6, 17, 7); + sub_step(F, b, c, d, a, 7, 22, 8); + sub_step(F, a, b, c, d, 8, 7, 9); + sub_step(F, d, a, b, c, 9, 12, 10); + sub_step(F, c, d, a, b, 10, 17, 11); + sub_step(F, b, c, d, a, 11, 22, 12); + sub_step(F, a, b, c, d, 12, 7, 13); + sub_step(F, d, a, b, c, 13, 12, 14); + sub_step(F, c, d, a, b, 14, 17, 15); + sub_step(F, b, c, d, a, 15, 22, 16); +} + +// round2() implementation. +inline +void MD5::round2() +{ + sub_step(G, a, b, c, d, 1, 5, 17); + sub_step(G, d, a, b, c, 6, 9, 18); + sub_step(G, c, d, a, b, 11, 14, 19); + sub_step(G, b, c, d, a, 0, 20, 20); + sub_step(G, a, b, c, d, 5, 5, 21); + sub_step(G, d, a, b, c, 10, 9, 22); + sub_step(G, c, d, a, b, 15, 14, 23); + sub_step(G, b, c, d, a, 4, 20, 24); + sub_step(G, a, b, c, d, 9, 5, 25); + sub_step(G, d, a, b, c, 14, 9, 26); + sub_step(G, c, d, a, b, 3, 14, 27); + sub_step(G, b, c, d, a, 8, 20, 28); + sub_step(G, a, b, c, d, 13, 5, 29); + sub_step(G, d, a, b, c, 2, 9, 30); + sub_step(G, c, d, a, b, 7, 14, 31); + sub_step(G, b, c, d, a, 12, 20, 32); +} + +// round3() implementation. +inline +void MD5::round3() +{ + sub_step(H, a, b, c, d, 5, 4, 33); + sub_step(H, d, a, b, c, 8, 11, 34); + sub_step(H, c, d, a, b, 11, 16, 35); + sub_step(H, b, c, d, a, 14, 23, 36); + sub_step(H, a, b, c, d, 1, 4, 37); + sub_step(H, d, a, b, c, 4, 11, 38); + sub_step(H, c, d, a, b, 7, 16, 39); + sub_step(H, b, c, d, a, 10, 23, 40); + sub_step(H, a, b, c, d, 13, 4, 41); + sub_step(H, d, a, b, c, 0, 11, 42); + sub_step(H, c, d, a, b, 3, 16, 43); + sub_step(H, b, c, d, a, 6, 23, 44); + sub_step(H, a, b, c, d, 9, 4, 45); + sub_step(H, d, a, b, c, 12, 11, 46); + sub_step(H, c, d, a, b, 15, 16, 47); + sub_step(H, b, c, d, a, 2, 23, 48); +} + +// round 4() implementation. +inline +void MD5::round4() +{ + sub_step(I, a, b, c, d, 0, 6, 49); + sub_step(I, d, a, b, c, 7, 10, 50); + sub_step(I, c, d, a, b, 14, 15, 51); + sub_step(I, b, c, d, a, 5, 21, 52); + sub_step(I, a, b, c, d, 12, 6, 53); + sub_step(I, d, a, b, c, 3, 10, 54); + sub_step(I, c, d, a, b, 10, 15, 55); + sub_step(I, b, c, d, a, 1, 21, 56); + sub_step(I, a, b, c, d, 8, 6, 57); + sub_step(I, d, a, b, c, 15, 10, 58); + sub_step(I, c, d, a, b, 6, 15, 59); + sub_step(I, b, c, d, a, 13, 21, 60); + sub_step(I, a, b, c, d, 4, 6, 61); + sub_step(I, d, a, b, c, 11, 10, 62); + sub_step(I, c, d, a, b, 2, 15, 63); + sub_step(I, b, c, d, a, 9, 21, 64); +} + +// step implementation. +inline +void MD5::step() +{ + sav(); + round1(); + round2(); + round3(); + round4(); + a += aa; + b += bb; + c += cc; + d += dd; +}; + +// sub step implementation. +template <class Fun> +inline +void MD5::sub_step(const Fun &fun, + storage_type &a, + const storage_type &b, + const storage_type &c, + const storage_type &d, + unsigned k, + unsigned s, + unsigned i) +{ + a += fun(b, c, d) + (X[k] + T[i - 1]); + a = a<<s | a>>(32-s); + a += b; + //a = b + ((a + fun(b, c, d) + X[k] + T[i - 1]) << s); +} + +// gen_sub_key implementation. +inline +void MD5::gen_sub_key(std::vector<key::value_type> &v, + storage_type x, + unsigned base) +{ + base *= sizeof(value_type); + + for (unsigned i = 0; i < sizeof(value_type); ++i) + v[base + i] = (x & (0xFF << (i * 8))) >> (i * 8); +} + +// gen_key implementation. + +inline +key MD5::gen_key() +{ + std::vector<key::value_type> k; + + k.reserve(16); + gen_sub_key(k, a, 0); + gen_sub_key(k, b, 1); + gen_sub_key(k, c, 2); + gen_sub_key(k, d, 3); + return key(k); +} + +// execute implementation. +inline +key MD5::execute() +{ + while (buffer_.size() > current_) + step(); + return gen_key(); +} +#endif // !OLENA_OLN_UTILS_MD5_HXX Index: olena/oln/utils/md5.hh --- olena/oln/utils/md5.hh Fri, 19 Mar 2004 15:52:00 +0100 palma_g () +++ olena/oln/utils/md5.hh Fri, 19 Mar 2004 15:35:12 +0100 palma_g (oln/k/14_md5.hh 644) @@ -0,0 +1,204 @@ +// Copyright (C) 2004 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLENA_OLN_UTILS_MD5_HH +# define OLENA_OLN_UTILS_MD5_HH + +# include <ntg/all.hh> +# include <vector> + +# include <oln/utils/key.hh> +# include <oln/utils/buffer.hh> + +namespace oln { + namespace utils { + /*! + ** \brief Class used to compute a MD5 digest. + */ + class MD5 + { + public: + typedef ntg::int_u32 value_type; ///< Value to work on. + typedef ntg_storage_type_(value_type) storage_type; ///< Representation type of value type. + + /*! + ** \brief Constructor. + ** + ** Initialization from a buffer. + ** + ** \arg The buffer to use. + */ + explicit MD5(buffer b); + + /*! + ** \brief Compute the digest. + */ + key execute(); + + /*! + ** \brief Generate the key. + ** + ** \pre To avoid meaningless result, you should call execute before. + */ + key gen_key(); + + protected: + /*! + ** \brief initialization of a MD5 algorithm step. + */ + void sav(); + + /*! + ** \brief Round 1 of the algorithm. + */ + void round1(); + + /*! + ** \brief Round 2 of the algorithm. + */ + void round2(); + + /*! + ** \brief Round 3 of the algorithm. + */ + void round3(); + + /*! + ** \brief Round 4 of the algorithm. + */ + void round4(); + + /*! + ** \brief A step of the algorithm. + */ + void step(); + + /*! + ** \brief Sub step to update a register value. + */ + template <class Fun> + void sub_step(const Fun &fun, + storage_type &a, + const storage_type &b, + const storage_type &c, + const storage_type &d, + unsigned k, + unsigned s, + unsigned i); + + /*! + ** \brief Generate a sub part of the key. + ** + ** \arg v Vector of values (output). + ** \arg x Data to put in v. + ** \arg base Where to put x in v. + */ + void gen_sub_key(std::vector<key::value_type> &v, + storage_type x, + unsigned base); + + + buffer buffer_; ///< The buffer to process. + std::vector<storage_type> X; ///< Vector of 16 words. + std::vector<storage_type> T; ///< Vector of 64 words. + unsigned current_; ///< Current position in the buffer. + storage_type aa; ///< Save of a. + storage_type bb; ///< Save of b. + storage_type cc; ///< Save of c. + storage_type dd; ///< Save of d. + storage_type a; ///< A register. + storage_type b; ///< B register. + storage_type c; ///< C register. + storage_type d; ///< D register. + + /*! + ** \brief Functor for bit operations. + ** + ** F(X,Y,Z) = XY v not(X) Z + */ + struct + { + storage_type operator()(const storage_type &x, + const storage_type &y, + const storage_type &z) const + { + // return z ^ (x & (y ^ z)); + return x & y | ~x & z; + } + } F; + + /*! + ** \brief Functor for bit operations. + ** + ** G(X,Y,Z) = XZ v Y not(Z) + */ + struct + { + storage_type operator()(const storage_type &x, + const storage_type &y, + const storage_type &z) const + { + return x & z | y & ~z; + } + } G; + + /*! + ** \brief Functor for bit operations. + ** + ** H(X,Y,Z) = X xor Y xor Z + */ + struct + { + storage_type operator()(const storage_type &x, + const storage_type &y, + const storage_type &z) const + { + return x ^ y ^ z; + } + } H; + + /*! + ** \brief Functor for bit operations. + ** + ** I(X,Y,Z) = Y xor (X v not(Z)) + */ + struct + { + storage_type operator()(const storage_type &x, + const storage_type &y, + const storage_type &z) const + { + return y ^ (x | ~z); + } + } I; + }; + +#include <oln/utils/md5.hxx> + + } // !utils +} // !oln +#endif // !OLENA_OLN_UTILS_MD5_HH -- Giovanni Palma EPITA - promo 2005 - membre d'EpX - LRDE Mob. : +33 (0)6 60 97 31 74