From cb0070e5d6de0885de687ef2586d6dc06f5853a0 Mon Sep 17 00:00:00 2001 From: Aki Date: Sun, 18 Feb 2024 02:09:31 +0100 Subject: Extracted third-party SHA1 to contrib/ --- NOTICE | 6 + StarsEx/CMakeLists.txt | 2 +- StarsEx/Sha1.cpp | 589 -------------------------------------------- StarsEx/Sha1.h | 89 ------- contrib/CMakeLists.txt | 1 + contrib/sha1/CMakeLists.txt | 6 + contrib/sha1/Sha1.cpp | 589 ++++++++++++++++++++++++++++++++++++++++++++ contrib/sha1/include/Sha1.h | 89 +++++++ 8 files changed, 692 insertions(+), 679 deletions(-) delete mode 100644 StarsEx/Sha1.cpp delete mode 100644 StarsEx/Sha1.h create mode 100644 contrib/sha1/CMakeLists.txt create mode 100644 contrib/sha1/Sha1.cpp create mode 100644 contrib/sha1/include/Sha1.h diff --git a/NOTICE b/NOTICE index b2a0721..b1e950f 100644 --- a/NOTICE +++ b/NOTICE @@ -32,6 +32,8 @@ See . Starshatter: The Open Source Project uses OPCODE: Copyright (c) 2001, Pierre Terdiman +OPCODE has been patched in this project to compile under Linux. + Starshatter: The Open Source Project uses vorbis: Copyright (c) 2002-2018, Xiph.org Foundation @@ -43,3 +45,7 @@ Starshatter: The Open Source Project uses zlib: Copyright (c) 1995-2017, Jean-loup Gailly and Mark Adler zlib is released under the zlib license. See . + + +Starshatter: The Open Source Project uses sha1: +Copyright (c) 1998, Paul E. Jones diff --git a/StarsEx/CMakeLists.txt b/StarsEx/CMakeLists.txt index 1c443b1..0f56b97 100644 --- a/StarsEx/CMakeLists.txt +++ b/StarsEx/CMakeLists.txt @@ -210,7 +210,6 @@ add_library( ScrollWindow.cpp SeekerAI.cpp Sensor.cpp - Sha1.cpp Shadow.cpp Shield.cpp ShieldRep.cpp @@ -285,6 +284,7 @@ target_link_libraries( PUBLIC Ogg::ogg PUBLIC Png::png PUBLIC Opcode + PRIVATE Sha1 ) target_compile_definitions( StarsEx diff --git a/StarsEx/Sha1.cpp b/StarsEx/Sha1.cpp deleted file mode 100644 index 7e3de70..0000000 --- a/StarsEx/Sha1.cpp +++ /dev/null @@ -1,589 +0,0 @@ -/* -* Sha1.cpp -* -* Copyright (C) 1998 -* Paul E. Jones -* All Rights Reserved. -* -***************************************************************************** -* $Id: sha1.cpp,v 1.6 2001/03/20 06:54:54 paulej Exp $ -***************************************************************************** -* -* Description: -* This class implements the Secure Hashing Standard as defined -* in FIPS PUB 180-1 published April 17, 1995. -* -* The Secure Hashing Standard, which uses the Secure Hashing -* Algorithm (SHA), produces a 160-bit message digest for a -* given data stream. In theory, it is highly improbable that -* two messages will produce the same message digest. Therefore, -* this algorithm can serve as a means of providing a "fingerprint" -* for a message. -* -* Portability Issues: -* SHA-1 is defined in terms of 32-bit "words". This code was -* written with the expectation that the processor has at least -* a 32-bit machine word size. If the machine word size is larger, -* the code should still function properly. One caveat to that -* is that the input functions taking characters and character arrays -* assume that only 8 bits of information are stored in each character. -* -* Caveats: -* SHA-1 is designed to work with messages less than 2^64 bits long. -* Although SHA-1 allows a message digest to be generated for -* messages of any number of bits less than 2^64, this implementation -* only works with messages with a length that is a multiple of 8 -* bits. -* -*/ - - -#include "Sha1.h" - -/* -* SHA1 -* -* Description: -* This is the constructor for the sha1 class. -* -* Parameters: -* None. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -SHA1::SHA1() -{ - Reset(); -} - -/* -* ~SHA1 -* -* Description: -* This is the destructor for the sha1 class -* -* Parameters: -* None. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -SHA1::~SHA1() -{ - // The destructor does nothing -} - -/* -* Reset -* -* Description: -* This function will initialize the sha1 class member variables -* in preparation for computing a new message digest. -* -* Parameters: -* None. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::Reset() -{ - Length_Low = 0; - Length_High = 0; - Message_Block_Index = 0; - - H[0] = 0x67452301; - H[1] = 0xEFCDAB89; - H[2] = 0x98BADCFE; - H[3] = 0x10325476; - H[4] = 0xC3D2E1F0; - - Computed = false; - Corrupted = false; -} - -/* -* Result -* -* Description: -* This function will return the 160-bit message digest into the -* array provided. -* -* Parameters: -* message_digest_array: [out] -* This is an array of five unsigned integers which will be filled -* with the message digest that has been computed. -* -* Returns: -* True if successful, false if it failed. -* -* Comments: -* -*/ -bool SHA1::Result(unsigned *message_digest_array) -{ - int i; // Counter - - if (Corrupted) - { - return false; - } - - if (!Computed) - { - PadMessage(); - Computed = true; - } - - for(i = 0; i < 5; i++) - { - message_digest_array[i] = H[i]; - } - - return true; -} - -/* -* Input -* -* Description: -* This function accepts an array of octets as the next portion of -* the message. -* -* Parameters: -* message_array: [in] -* An array of characters representing the next portion of the -* message. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::Input( const unsigned char *message_array, -unsigned length) -{ - if (!length) - { - return; - } - - if (Computed || Corrupted) - { - Corrupted = true; - return; - } - - while(length-- && !Corrupted) - { - Message_Block[Message_Block_Index++] = (*message_array & 0xFF); - - Length_Low += 8; - Length_Low &= 0xFFFFFFFF; // Force it to 32 bits - if (Length_Low == 0) - { - Length_High++; - Length_High &= 0xFFFFFFFF; // Force it to 32 bits - if (Length_High == 0) - { - Corrupted = true; // Message is too long - } - } - - if (Message_Block_Index == 64) - { - ProcessMessageBlock(); - } - - message_array++; - } -} - -/* -* Input -* -* Description: -* This function accepts an array of octets as the next portion of -* the message. -* -* Parameters: -* message_array: [in] -* An array of characters representing the next portion of the -* message. -* length: [in] -* The length of the message_array -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::Input( const char *message_array, -unsigned length) -{ - Input((unsigned char *) message_array, length); -} - -/* -* Input -* -* Description: -* This function accepts a single octets as the next message element. -* -* Parameters: -* message_element: [in] -* The next octet in the message. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::Input(unsigned char message_element) -{ - Input(&message_element, 1); -} - -/* -* Input -* -* Description: -* This function accepts a single octet as the next message element. -* -* Parameters: -* message_element: [in] -* The next octet in the message. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::Input(char message_element) -{ - Input((unsigned char *) &message_element, 1); -} - -/* -* operator<< -* -* Description: -* This operator makes it convenient to provide character strings to -* the SHA1 object for processing. -* -* Parameters: -* message_array: [in] -* The character array to take as input. -* -* Returns: -* A reference to the SHA1 object. -* -* Comments: -* Each character is assumed to hold 8 bits of information. -* -*/ -SHA1& SHA1::operator<<(const char *message_array) -{ - const char *p = message_array; - - while(*p) - { - Input(*p); - p++; - } - - return *this; -} - -/* -* operator<< -* -* Description: -* This operator makes it convenient to provide character strings to -* the SHA1 object for processing. -* -* Parameters: -* message_array: [in] -* The character array to take as input. -* -* Returns: -* A reference to the SHA1 object. -* -* Comments: -* Each character is assumed to hold 8 bits of information. -* -*/ -SHA1& SHA1::operator<<(const unsigned char *message_array) -{ - const unsigned char *p = message_array; - - while(*p) - { - Input(*p); - p++; - } - - return *this; -} - -/* -* operator<< -* -* Description: -* This function provides the next octet in the message. -* -* Parameters: -* message_element: [in] -* The next octet in the message -* -* Returns: -* A reference to the SHA1 object. -* -* Comments: -* The character is assumed to hold 8 bits of information. -* -*/ -SHA1& SHA1::operator<<(const char message_element) -{ - Input((unsigned char *) &message_element, 1); - - return *this; -} - -/* -* operator<< -* -* Description: -* This function provides the next octet in the message. -* -* Parameters: -* message_element: [in] -* The next octet in the message -* -* Returns: -* A reference to the SHA1 object. -* -* Comments: -* The character is assumed to hold 8 bits of information. -* -*/ -SHA1& SHA1::operator<<(const unsigned char message_element) -{ - Input(&message_element, 1); - - return *this; -} - -/* -* ProcessMessageBlock -* -* Description: -* This function will process the next 512 bits of the message -* stored in the Message_Block array. -* -* Parameters: -* None. -* -* Returns: -* Nothing. -* -* Comments: -* Many of the variable names in this function, especially the single -* character names, were used because those were the names used -* in the publication. -* -*/ -void SHA1::ProcessMessageBlock() -{ - const unsigned K[] = { // Constants defined for SHA-1 - 0x5A827999, - 0x6ED9EBA1, - 0x8F1BBCDC, - 0xCA62C1D6 - }; - int t; // Loop counter - unsigned temp; // Temporary word value - unsigned W[80]; // Word sequence - unsigned A, B, C, D, E; // Word buffers - - /* - * Initialize the first 16 words in the array W - */ - for(t = 0; t < 16; t++) - { - W[t] = Message_Block[t * 4] << 24; - W[t] |= Message_Block[t * 4 + 1] << 16; - W[t] |= Message_Block[t * 4 + 2] << 8; - W[t] |= Message_Block[t * 4 + 3]; - } - - for(t = 16; t < 80; t++) - { - W[t] = CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]); - } - - A = H[0]; - B = H[1]; - C = H[2]; - D = H[3]; - E = H[4]; - - for(t = 0; t < 20; t++) - { - temp = CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 20; t < 40; t++) - { - temp = CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 40; t < 60; t++) - { - temp = CircularShift(5,A) + - ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = CircularShift(30,B); - B = A; - A = temp; - } - - for(t = 60; t < 80; t++) - { - temp = CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]; - temp &= 0xFFFFFFFF; - E = D; - D = C; - C = CircularShift(30,B); - B = A; - A = temp; - } - - H[0] = (H[0] + A) & 0xFFFFFFFF; - H[1] = (H[1] + B) & 0xFFFFFFFF; - H[2] = (H[2] + C) & 0xFFFFFFFF; - H[3] = (H[3] + D) & 0xFFFFFFFF; - H[4] = (H[4] + E) & 0xFFFFFFFF; - - Message_Block_Index = 0; -} - -/* -* PadMessage -* -* Description: -* According to the standard, the message must be padded to an even -* 512 bits. The first padding bit must be a '1'. The last 64 bits -* represent the length of the original message. All bits in between -* should be 0. This function will pad the message according to those -* rules by filling the message_block array accordingly. It will also -* call ProcessMessageBlock() appropriately. When it returns, it -* can be assumed that the message digest has been computed. -* -* Parameters: -* None. -* -* Returns: -* Nothing. -* -* Comments: -* -*/ -void SHA1::PadMessage() -{ - /* - * Check to see if the current message block is too small to hold - * the initial padding bits and length. If so, we will pad the - * block, process it, and then continue padding into a second block. - */ - if (Message_Block_Index > 55) - { - Message_Block[Message_Block_Index++] = 0x80; - while(Message_Block_Index < 64) - { - Message_Block[Message_Block_Index++] = 0; - } - - ProcessMessageBlock(); - - while(Message_Block_Index < 56) - { - Message_Block[Message_Block_Index++] = 0; - } - } - else - { - Message_Block[Message_Block_Index++] = 0x80; - while(Message_Block_Index < 56) - { - Message_Block[Message_Block_Index++] = 0; - } - - } - - /* - * Store the message length as the last 8 octets - */ - Message_Block[56] = (Length_High >> 24) & 0xFF; - Message_Block[57] = (Length_High >> 16) & 0xFF; - Message_Block[58] = (Length_High >> 8) & 0xFF; - Message_Block[59] = (Length_High) & 0xFF; - Message_Block[60] = (Length_Low >> 24) & 0xFF; - Message_Block[61] = (Length_Low >> 16) & 0xFF; - Message_Block[62] = (Length_Low >> 8) & 0xFF; - Message_Block[63] = (Length_Low) & 0xFF; - - ProcessMessageBlock(); -} - - -/* -* CircularShift -* -* Description: -* This member function will perform a circular shifting operation. -* -* Parameters: -* bits: [in] -* The number of bits to shift (1-31) -* word: [in] -* The value to shift (assumes a 32-bit integer) -* -* Returns: -* The shifted value. -* -* Comments: -* -*/ -unsigned SHA1::CircularShift(int bits, unsigned word) -{ - return ((word << bits) & 0xFFFFFFFF) | ((word & 0xFFFFFFFF) >> (32-bits)); -} diff --git a/StarsEx/Sha1.h b/StarsEx/Sha1.h deleted file mode 100644 index ec64462..0000000 --- a/StarsEx/Sha1.h +++ /dev/null @@ -1,89 +0,0 @@ -/* -* Sha1.h -* -* Copyright (C) 1998 -* Paul E. Jones -* All Rights Reserved. -* -***************************************************************************** -* $Id: sha1.h,v 1.4 2001/03/20 06:25:06 paulej Exp $ -***************************************************************************** -* -* Description: -* This class implements the Secure Hashing Standard as defined -* in FIPS PUB 180-1 published April 17, 1995. -* -* Many of the variable names in this class, especially the single -* character names, were used because those were the names used -* in the publication. -* -* Please read the file sha1.cpp for more information. -* -*/ - -#ifndef _SHA1_H_ -#define _SHA1_H_ - -class SHA1 -{ - -public: - - SHA1(); - virtual ~SHA1(); - - /* - * Re-initialize the class - */ - void Reset(); - - /* - * Returns the message digest - */ - bool Result(unsigned *message_digest_array); - - /* - * Provide input to SHA1 - */ - void Input( const unsigned char *message_array, - unsigned length); - void Input( const char *message_array, - unsigned length); - void Input(unsigned char message_element); - void Input(char message_element); - SHA1& operator<<(const char *message_array); - SHA1& operator<<(const unsigned char *message_array); - SHA1& operator<<(const char message_element); - SHA1& operator<<(const unsigned char message_element); - -private: - - /* - * Process the next 512 bits of the message - */ - void ProcessMessageBlock(); - - /* - * Pads the current message block to 512 bits - */ - void PadMessage(); - - /* - * Performs a circular left shift operation - */ - inline unsigned CircularShift(int bits, unsigned word); - - unsigned H[5]; // Message digest buffers - - unsigned Length_Low; // Message length in bits - unsigned Length_High; // Message length in bits - - unsigned char Message_Block[64]; // 512-bit message blocks - int Message_Block_Index; // Index into message block array - - bool Computed; // Is the digest computed? - bool Corrupted; // Is the message digest corruped? - -}; - -#endif diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt index 7a8371c..3939f0c 100644 --- a/contrib/CMakeLists.txt +++ b/contrib/CMakeLists.txt @@ -1,6 +1,7 @@ add_subdirectory(libpng) add_subdirectory(ogg) add_subdirectory(Opcode) +add_subdirectory(sha1) add_subdirectory(vorbis) add_subdirectory(zlib) install( diff --git a/contrib/sha1/CMakeLists.txt b/contrib/sha1/CMakeLists.txt new file mode 100644 index 0000000..cc6fab2 --- /dev/null +++ b/contrib/sha1/CMakeLists.txt @@ -0,0 +1,6 @@ +cmake_minimum_required(VERSION 3.20) +project(Sha1) +add_library(${PROJECT_NAME} STATIC Sha1.cpp) +target_include_directories( + ${PROJECT_NAME} + PUBLIC include) diff --git a/contrib/sha1/Sha1.cpp b/contrib/sha1/Sha1.cpp new file mode 100644 index 0000000..7e3de70 --- /dev/null +++ b/contrib/sha1/Sha1.cpp @@ -0,0 +1,589 @@ +/* +* Sha1.cpp +* +* Copyright (C) 1998 +* Paul E. Jones +* All Rights Reserved. +* +***************************************************************************** +* $Id: sha1.cpp,v 1.6 2001/03/20 06:54:54 paulej Exp $ +***************************************************************************** +* +* Description: +* This class implements the Secure Hashing Standard as defined +* in FIPS PUB 180-1 published April 17, 1995. +* +* The Secure Hashing Standard, which uses the Secure Hashing +* Algorithm (SHA), produces a 160-bit message digest for a +* given data stream. In theory, it is highly improbable that +* two messages will produce the same message digest. Therefore, +* this algorithm can serve as a means of providing a "fingerprint" +* for a message. +* +* Portability Issues: +* SHA-1 is defined in terms of 32-bit "words". This code was +* written with the expectation that the processor has at least +* a 32-bit machine word size. If the machine word size is larger, +* the code should still function properly. One caveat to that +* is that the input functions taking characters and character arrays +* assume that only 8 bits of information are stored in each character. +* +* Caveats: +* SHA-1 is designed to work with messages less than 2^64 bits long. +* Although SHA-1 allows a message digest to be generated for +* messages of any number of bits less than 2^64, this implementation +* only works with messages with a length that is a multiple of 8 +* bits. +* +*/ + + +#include "Sha1.h" + +/* +* SHA1 +* +* Description: +* This is the constructor for the sha1 class. +* +* Parameters: +* None. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +SHA1::SHA1() +{ + Reset(); +} + +/* +* ~SHA1 +* +* Description: +* This is the destructor for the sha1 class +* +* Parameters: +* None. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +SHA1::~SHA1() +{ + // The destructor does nothing +} + +/* +* Reset +* +* Description: +* This function will initialize the sha1 class member variables +* in preparation for computing a new message digest. +* +* Parameters: +* None. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::Reset() +{ + Length_Low = 0; + Length_High = 0; + Message_Block_Index = 0; + + H[0] = 0x67452301; + H[1] = 0xEFCDAB89; + H[2] = 0x98BADCFE; + H[3] = 0x10325476; + H[4] = 0xC3D2E1F0; + + Computed = false; + Corrupted = false; +} + +/* +* Result +* +* Description: +* This function will return the 160-bit message digest into the +* array provided. +* +* Parameters: +* message_digest_array: [out] +* This is an array of five unsigned integers which will be filled +* with the message digest that has been computed. +* +* Returns: +* True if successful, false if it failed. +* +* Comments: +* +*/ +bool SHA1::Result(unsigned *message_digest_array) +{ + int i; // Counter + + if (Corrupted) + { + return false; + } + + if (!Computed) + { + PadMessage(); + Computed = true; + } + + for(i = 0; i < 5; i++) + { + message_digest_array[i] = H[i]; + } + + return true; +} + +/* +* Input +* +* Description: +* This function accepts an array of octets as the next portion of +* the message. +* +* Parameters: +* message_array: [in] +* An array of characters representing the next portion of the +* message. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::Input( const unsigned char *message_array, +unsigned length) +{ + if (!length) + { + return; + } + + if (Computed || Corrupted) + { + Corrupted = true; + return; + } + + while(length-- && !Corrupted) + { + Message_Block[Message_Block_Index++] = (*message_array & 0xFF); + + Length_Low += 8; + Length_Low &= 0xFFFFFFFF; // Force it to 32 bits + if (Length_Low == 0) + { + Length_High++; + Length_High &= 0xFFFFFFFF; // Force it to 32 bits + if (Length_High == 0) + { + Corrupted = true; // Message is too long + } + } + + if (Message_Block_Index == 64) + { + ProcessMessageBlock(); + } + + message_array++; + } +} + +/* +* Input +* +* Description: +* This function accepts an array of octets as the next portion of +* the message. +* +* Parameters: +* message_array: [in] +* An array of characters representing the next portion of the +* message. +* length: [in] +* The length of the message_array +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::Input( const char *message_array, +unsigned length) +{ + Input((unsigned char *) message_array, length); +} + +/* +* Input +* +* Description: +* This function accepts a single octets as the next message element. +* +* Parameters: +* message_element: [in] +* The next octet in the message. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::Input(unsigned char message_element) +{ + Input(&message_element, 1); +} + +/* +* Input +* +* Description: +* This function accepts a single octet as the next message element. +* +* Parameters: +* message_element: [in] +* The next octet in the message. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::Input(char message_element) +{ + Input((unsigned char *) &message_element, 1); +} + +/* +* operator<< +* +* Description: +* This operator makes it convenient to provide character strings to +* the SHA1 object for processing. +* +* Parameters: +* message_array: [in] +* The character array to take as input. +* +* Returns: +* A reference to the SHA1 object. +* +* Comments: +* Each character is assumed to hold 8 bits of information. +* +*/ +SHA1& SHA1::operator<<(const char *message_array) +{ + const char *p = message_array; + + while(*p) + { + Input(*p); + p++; + } + + return *this; +} + +/* +* operator<< +* +* Description: +* This operator makes it convenient to provide character strings to +* the SHA1 object for processing. +* +* Parameters: +* message_array: [in] +* The character array to take as input. +* +* Returns: +* A reference to the SHA1 object. +* +* Comments: +* Each character is assumed to hold 8 bits of information. +* +*/ +SHA1& SHA1::operator<<(const unsigned char *message_array) +{ + const unsigned char *p = message_array; + + while(*p) + { + Input(*p); + p++; + } + + return *this; +} + +/* +* operator<< +* +* Description: +* This function provides the next octet in the message. +* +* Parameters: +* message_element: [in] +* The next octet in the message +* +* Returns: +* A reference to the SHA1 object. +* +* Comments: +* The character is assumed to hold 8 bits of information. +* +*/ +SHA1& SHA1::operator<<(const char message_element) +{ + Input((unsigned char *) &message_element, 1); + + return *this; +} + +/* +* operator<< +* +* Description: +* This function provides the next octet in the message. +* +* Parameters: +* message_element: [in] +* The next octet in the message +* +* Returns: +* A reference to the SHA1 object. +* +* Comments: +* The character is assumed to hold 8 bits of information. +* +*/ +SHA1& SHA1::operator<<(const unsigned char message_element) +{ + Input(&message_element, 1); + + return *this; +} + +/* +* ProcessMessageBlock +* +* Description: +* This function will process the next 512 bits of the message +* stored in the Message_Block array. +* +* Parameters: +* None. +* +* Returns: +* Nothing. +* +* Comments: +* Many of the variable names in this function, especially the single +* character names, were used because those were the names used +* in the publication. +* +*/ +void SHA1::ProcessMessageBlock() +{ + const unsigned K[] = { // Constants defined for SHA-1 + 0x5A827999, + 0x6ED9EBA1, + 0x8F1BBCDC, + 0xCA62C1D6 + }; + int t; // Loop counter + unsigned temp; // Temporary word value + unsigned W[80]; // Word sequence + unsigned A, B, C, D, E; // Word buffers + + /* + * Initialize the first 16 words in the array W + */ + for(t = 0; t < 16; t++) + { + W[t] = Message_Block[t * 4] << 24; + W[t] |= Message_Block[t * 4 + 1] << 16; + W[t] |= Message_Block[t * 4 + 2] << 8; + W[t] |= Message_Block[t * 4 + 3]; + } + + for(t = 16; t < 80; t++) + { + W[t] = CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]); + } + + A = H[0]; + B = H[1]; + C = H[2]; + D = H[3]; + E = H[4]; + + for(t = 0; t < 20; t++) + { + temp = CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0]; + temp &= 0xFFFFFFFF; + E = D; + D = C; + C = CircularShift(30,B); + B = A; + A = temp; + } + + for(t = 20; t < 40; t++) + { + temp = CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1]; + temp &= 0xFFFFFFFF; + E = D; + D = C; + C = CircularShift(30,B); + B = A; + A = temp; + } + + for(t = 40; t < 60; t++) + { + temp = CircularShift(5,A) + + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2]; + temp &= 0xFFFFFFFF; + E = D; + D = C; + C = CircularShift(30,B); + B = A; + A = temp; + } + + for(t = 60; t < 80; t++) + { + temp = CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3]; + temp &= 0xFFFFFFFF; + E = D; + D = C; + C = CircularShift(30,B); + B = A; + A = temp; + } + + H[0] = (H[0] + A) & 0xFFFFFFFF; + H[1] = (H[1] + B) & 0xFFFFFFFF; + H[2] = (H[2] + C) & 0xFFFFFFFF; + H[3] = (H[3] + D) & 0xFFFFFFFF; + H[4] = (H[4] + E) & 0xFFFFFFFF; + + Message_Block_Index = 0; +} + +/* +* PadMessage +* +* Description: +* According to the standard, the message must be padded to an even +* 512 bits. The first padding bit must be a '1'. The last 64 bits +* represent the length of the original message. All bits in between +* should be 0. This function will pad the message according to those +* rules by filling the message_block array accordingly. It will also +* call ProcessMessageBlock() appropriately. When it returns, it +* can be assumed that the message digest has been computed. +* +* Parameters: +* None. +* +* Returns: +* Nothing. +* +* Comments: +* +*/ +void SHA1::PadMessage() +{ + /* + * Check to see if the current message block is too small to hold + * the initial padding bits and length. If so, we will pad the + * block, process it, and then continue padding into a second block. + */ + if (Message_Block_Index > 55) + { + Message_Block[Message_Block_Index++] = 0x80; + while(Message_Block_Index < 64) + { + Message_Block[Message_Block_Index++] = 0; + } + + ProcessMessageBlock(); + + while(Message_Block_Index < 56) + { + Message_Block[Message_Block_Index++] = 0; + } + } + else + { + Message_Block[Message_Block_Index++] = 0x80; + while(Message_Block_Index < 56) + { + Message_Block[Message_Block_Index++] = 0; + } + + } + + /* + * Store the message length as the last 8 octets + */ + Message_Block[56] = (Length_High >> 24) & 0xFF; + Message_Block[57] = (Length_High >> 16) & 0xFF; + Message_Block[58] = (Length_High >> 8) & 0xFF; + Message_Block[59] = (Length_High) & 0xFF; + Message_Block[60] = (Length_Low >> 24) & 0xFF; + Message_Block[61] = (Length_Low >> 16) & 0xFF; + Message_Block[62] = (Length_Low >> 8) & 0xFF; + Message_Block[63] = (Length_Low) & 0xFF; + + ProcessMessageBlock(); +} + + +/* +* CircularShift +* +* Description: +* This member function will perform a circular shifting operation. +* +* Parameters: +* bits: [in] +* The number of bits to shift (1-31) +* word: [in] +* The value to shift (assumes a 32-bit integer) +* +* Returns: +* The shifted value. +* +* Comments: +* +*/ +unsigned SHA1::CircularShift(int bits, unsigned word) +{ + return ((word << bits) & 0xFFFFFFFF) | ((word & 0xFFFFFFFF) >> (32-bits)); +} diff --git a/contrib/sha1/include/Sha1.h b/contrib/sha1/include/Sha1.h new file mode 100644 index 0000000..ec64462 --- /dev/null +++ b/contrib/sha1/include/Sha1.h @@ -0,0 +1,89 @@ +/* +* Sha1.h +* +* Copyright (C) 1998 +* Paul E. Jones +* All Rights Reserved. +* +***************************************************************************** +* $Id: sha1.h,v 1.4 2001/03/20 06:25:06 paulej Exp $ +***************************************************************************** +* +* Description: +* This class implements the Secure Hashing Standard as defined +* in FIPS PUB 180-1 published April 17, 1995. +* +* Many of the variable names in this class, especially the single +* character names, were used because those were the names used +* in the publication. +* +* Please read the file sha1.cpp for more information. +* +*/ + +#ifndef _SHA1_H_ +#define _SHA1_H_ + +class SHA1 +{ + +public: + + SHA1(); + virtual ~SHA1(); + + /* + * Re-initialize the class + */ + void Reset(); + + /* + * Returns the message digest + */ + bool Result(unsigned *message_digest_array); + + /* + * Provide input to SHA1 + */ + void Input( const unsigned char *message_array, + unsigned length); + void Input( const char *message_array, + unsigned length); + void Input(unsigned char message_element); + void Input(char message_element); + SHA1& operator<<(const char *message_array); + SHA1& operator<<(const unsigned char *message_array); + SHA1& operator<<(const char message_element); + SHA1& operator<<(const unsigned char message_element); + +private: + + /* + * Process the next 512 bits of the message + */ + void ProcessMessageBlock(); + + /* + * Pads the current message block to 512 bits + */ + void PadMessage(); + + /* + * Performs a circular left shift operation + */ + inline unsigned CircularShift(int bits, unsigned word); + + unsigned H[5]; // Message digest buffers + + unsigned Length_Low; // Message length in bits + unsigned Length_High; // Message length in bits + + unsigned char Message_Block[64]; // 512-bit message blocks + int Message_Block_Index; // Index into message block array + + bool Computed; // Is the digest computed? + bool Corrupted; // Is the message digest corruped? + +}; + +#endif -- cgit v1.1