project_boditech_vidas_a8000_v3
/
a8000_linux_sdk
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

add sha256

master
zhaohe 2 years ago
parent
dda7872ae7
commit
e416beae5d
5 changed files with 566 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 1
      core/components/sha256/IFLYTOP_README.md
  2. 140
      core/components/sha256/README.md
  3. 22
      core/components/sha256/example/hasher.cpp
  4. 26
      core/components/sha256/example/interactive_hasher.cpp
  5. 377
      core/components/sha256/sha256.hpp

1
core/components/sha256/IFLYTOP_README.md
View File

@ -0,0 +1 @@
cpy from https://github.com/okdshin/PicoSHA2

140
core/components/sha256/README.md
View File

@ -0,0 +1,140 @@
# PicoSHA2 - a C++ SHA256 hash generator
cpy from https://github.com/okdshin/PicoSHA2
Copyright © 2017 okdshin
## Introduction
PicoSHA2 is a tiny SHA256 hash generator for C++ with following properties:
- header-file only
- no external dependencies (only uses standard C++ libraries)
- STL-friendly
- licensed under MIT License
## Generating SHA256 hash and hash hex string
```c++
// any STL sequantial container (vector, list, dequeue...)
std::string src_str = "The quick brown fox jumps over the lazy dog";
std::vector<unsigned char> hash(picosha2::k_digest_size);
picosha2::hash256(src_str.begin(), src_str.end(), hash.begin(), hash.end());
std::string hex_str = picosha2::bytes_to_hex_string(hash.begin(), hash.end());
```
## Generating SHA256 hash and hash hex string from byte stream
```c++
picosha2::hash256_one_by_one hasher;
...
hasher.process(block.begin(), block.end());
...
hasher.finish();
std::vector<unsigned char> hash(picosha2::k_digest_size);
hasher.get_hash_bytes(hash.begin(), hash.end());
std::string hex_str = picosha2::get_hash_hex_string(hasher);
```
The file `example/interactive_hasher.cpp` has more detailed information.
## Generating SHA256 hash from a binary file
```c++
std::ifstream f("file.txt", std::ios::binary);
std::vector<unsigned char> s(picosha2::k_digest_size);
picosha2::hash256(f, s.begin(), s.end());
```
This `hash256` may use less memory than reading whole of the file.
## Generating SHA256 hash hex string from std::string
```c++
std::string src_str = "The quick brown fox jumps over the lazy dog";
std::string hash_hex_str;
picosha2::hash256_hex_string(src_str, hash_hex_str);
std::cout << hash_hex_str << std::endl;
//this output is "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"
```
```c++
std::string src_str = "The quick brown fox jumps over the lazy dog";
std::string hash_hex_str = picosha2::hash256_hex_string(src_str);
std::cout << hash_hex_str << std::endl;
//this output is "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"
```
```c++
std::string src_str = "The quick brown fox jumps over the lazy dog.";//add '.'
std::string hash_hex_str = picosha2::hash256_hex_string(src_str.begin(), src_str.end());
std::cout << hash_hex_str << std::endl;
//this output is "ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c"
```
## Generating SHA256 hash hex string from byte sequence
```c++
std::vector<unsigned char> src_vect(...);
std::string hash_hex_str;
picosha2::hash256_hex_string(src_vect, hash_hex_str);
```
```c++
std::vector<unsigned char> src_vect(...);
std::string hash_hex_str = picosha2::hash256_hex_string(src_vect);
```
```c++
unsigned char src_c_array[picosha2::k_digest_size] = {...};
std::string hash_hex_str;
picosha2::hash256_hex_string(src_c_array, src_c_array+picosha2::k_digest_size, hash_hex_str);
```
```c++
unsigned char src_c_array[picosha2::k_digest_size] = {...};
std::string hash_hex_str = picosha2::hash256_hex_string(src_c_array, src_c_array+picosha2::k_digest_size);
```
## Generating SHA256 hash byte sequence from STL sequential container
```c++
//any STL sequantial container (vector, list, dequeue...)
std::string src_str = "The quick brown fox jumps over the lazy dog";
//any STL sequantial containers (vector, list, dequeue...)
std::vector<unsigned char> hash(picosha2::k_digest_size);
// in: container, out: container
picosha2::hash256(src_str, hash);
```
```c++
//any STL sequantial container (vector, list, dequeue...)
std::string src_str = "The quick brown fox jumps over the lazy dog";
//any STL sequantial containers (vector, list, dequeue...)
std::vector<unsigned char> hash(picosha2::k_digest_size);
// in: iterator pair, out: contaner
picosha2::hash256(src_str.begin(), src_str.end(), hash);
```
```c++
std::string src_str = "The quick brown fox jumps over the lazy dog";
unsigned char hash_byte_c_array[picosha2::k_digest_size];
// in: container, out: iterator(pointer) pair
picosha2::hash256(src_str, hash_byte_c_array, hash_byte_c_array+picosha2::k_digest_size);
```
```c++
std::string src_str = "The quick brown fox jumps over the lazy dog";
std::vector<unsigned char> hash(picosha2::k_digest_size);
// in: iterator pair, out: iterator pair
picosha2::hash256(src_str.begin(), src_str.end(), hash.begin(), hash.end());
```

22
core/components/sha256/example/hasher.cpp
View File

@ -0,0 +1,22 @@
#include <iostream>
#include "../picosha2.h"
void CalcAndOutput(const std::string& src){
std::cout << "src : \"" << src << "\"\n";
std::cout << "hash: " << picosha2::hash256_hex_string(src) << "\n" << std::endl;
}
int main(int argc, char* argv[])
{
if(argc == 1){
CalcAndOutput("");
}
else{
for(int i = 1; i < argc; ++i){
CalcAndOutput(argv[i]);
}
}
return 0;
}

26
core/components/sha256/example/interactive_hasher.cpp
View File

@ -0,0 +1,26 @@
#include <iostream>
#include "../picosha2.h"
int main(int argc, char* argv[])
{
std::cout << "Input freely. To get hash, input \"hash!\". " << std::endl;
picosha2::hash256_one_by_one hasher;
while(true){
hasher.init(); //reset hasher state
while(true){
std::string line;
std::getline(std::cin, line);
if(line == "hash!"){
break;
}
hasher.process(line.begin(), line.end());
}
hasher.finish();
std::string hex_str;
picosha2::get_hash_hex_string(hasher, hex_str);
std::cout << hex_str << std::endl;
}
return 0;
}

377
core/components/sha256/sha256.hpp
View File

@ -0,0 +1,377 @@
/*
The MIT License (MIT)
Copyright (C) 2017 okdshin
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef PICOSHA2_H
#define PICOSHA2_H
// iflytopsha256:20140213
#ifndef PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR
#define PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR \
1048576 //=1024*1024: default is 1MB memory
#endif
#include <algorithm>
#include <cassert>
#include <iterator>
#include <sstream>
#include <vector>
#include <fstream>
namespace iflytopsha256 {
typedef unsigned long word_t;
typedef unsigned char byte_t;
static const size_t k_digest_size = 32;
namespace detail {
inline byte_t mask_8bit(byte_t x) { return x & 0xff; }
inline word_t mask_32bit(word_t x) { return x & 0xffffffff; }
const word_t add_constant[64] = {
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};
const word_t initial_message_digest[8] = {0x6a09e667, 0xbb67ae85, 0x3c6ef372,
0xa54ff53a, 0x510e527f, 0x9b05688c,
0x1f83d9ab, 0x5be0cd19};
inline word_t ch(word_t x, word_t y, word_t z) { return (x & y) ^ ((~x) & z); }
inline word_t maj(word_t x, word_t y, word_t z) {
return (x & y) ^ (x & z) ^ (y & z);
}
inline word_t rotr(word_t x, std::size_t n) {
assert(n < 32);
return mask_32bit((x >> n) | (x << (32 - n)));
}
inline word_t bsig0(word_t x) { return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22); }
inline word_t bsig1(word_t x) { return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25); }
inline word_t shr(word_t x, std::size_t n) {
assert(n < 32);
return x >> n;
}
inline word_t ssig0(word_t x) { return rotr(x, 7) ^ rotr(x, 18) ^ shr(x, 3); }
inline word_t ssig1(word_t x) { return rotr(x, 17) ^ rotr(x, 19) ^ shr(x, 10); }
template <typename RaIter1, typename RaIter2>
void hash256_block(RaIter1 message_digest, RaIter2 first, RaIter2 last) {
assert(first + 64 == last);
static_cast<void>(last); // for avoiding unused-variable warning
word_t w[64];
std::fill(w, w + 64, word_t(0));
for (std::size_t i = 0; i < 16; ++i) {
w[i] = (static_cast<word_t>(mask_8bit(*(first + i * 4))) << 24) |
(static_cast<word_t>(mask_8bit(*(first + i * 4 + 1))) << 16) |
(static_cast<word_t>(mask_8bit(*(first + i * 4 + 2))) << 8) |
(static_cast<word_t>(mask_8bit(*(first + i * 4 + 3))));
}
for (std::size_t i = 16; i < 64; ++i) {
w[i] = mask_32bit(ssig1(w[i - 2]) + w[i - 7] + ssig0(w[i - 15]) +
w[i - 16]);
}
word_t a = *message_digest;
word_t b = *(message_digest + 1);
word_t c = *(message_digest + 2);
word_t d = *(message_digest + 3);
word_t e = *(message_digest + 4);
word_t f = *(message_digest + 5);
word_t g = *(message_digest + 6);
word_t h = *(message_digest + 7);
for (std::size_t i = 0; i < 64; ++i) {
word_t temp1 = h + bsig1(e) + ch(e, f, g) + add_constant[i] + w[i];
word_t temp2 = bsig0(a) + maj(a, b, c);
h = g;
g = f;
f = e;
e = mask_32bit(d + temp1);
d = c;
c = b;
b = a;
a = mask_32bit(temp1 + temp2);
}
*message_digest += a;
*(message_digest + 1) += b;
*(message_digest + 2) += c;
*(message_digest + 3) += d;
*(message_digest + 4) += e;
*(message_digest + 5) += f;
*(message_digest + 6) += g;
*(message_digest + 7) += h;
for (std::size_t i = 0; i < 8; ++i) {
*(message_digest + i) = mask_32bit(*(message_digest + i));
}
}
} // namespace detail
template <typename InIter>
void output_hex(InIter first, InIter last, std::ostream& os) {
os.setf(std::ios::hex, std::ios::basefield);
while (first != last) {
os.width(2);
os.fill('0');
os << static_cast<unsigned int>(*first);
++first;
}
os.setf(std::ios::dec, std::ios::basefield);
}
template <typename InIter>
void bytes_to_hex_string(InIter first, InIter last, std::string& hex_str) {
std::ostringstream oss;
output_hex(first, last, oss);
hex_str.assign(oss.str());
}
template <typename InContainer>
void bytes_to_hex_string(const InContainer& bytes, std::string& hex_str) {
bytes_to_hex_string(bytes.begin(), bytes.end(), hex_str);
}
template <typename InIter>
std::string bytes_to_hex_string(InIter first, InIter last) {
std::string hex_str;
bytes_to_hex_string(first, last, hex_str);
return hex_str;
}
template <typename InContainer>
std::string bytes_to_hex_string(const InContainer& bytes) {
std::string hex_str;
bytes_to_hex_string(bytes, hex_str);
return hex_str;
}
class hash256_one_by_one {
public:
hash256_one_by_one() { init(); }
void init() {
buffer_.clear();
std::fill(data_length_digits_, data_length_digits_ + 4, word_t(0));
std::copy(detail::initial_message_digest,
detail::initial_message_digest + 8, h_);
}
template <typename RaIter>
void process(RaIter first, RaIter last) {
add_to_data_length(static_cast<word_t>(std::distance(first, last)));
std::copy(first, last, std::back_inserter(buffer_));
std::size_t i = 0;
for (; i + 64 <= buffer_.size(); i += 64) {
detail::hash256_block(h_, buffer_.begin() + i,
buffer_.begin() + i + 64);
}
buffer_.erase(buffer_.begin(), buffer_.begin() + i);
}
void finish() {
byte_t temp[64];
std::fill(temp, temp + 64, byte_t(0));
std::size_t remains = buffer_.size();
std::copy(buffer_.begin(), buffer_.end(), temp);
temp[remains] = 0x80;
if (remains > 55) {
std::fill(temp + remains + 1, temp + 64, byte_t(0));
detail::hash256_block(h_, temp, temp + 64);
std::fill(temp, temp + 64 - 4, byte_t(0));
} else {
std::fill(temp + remains + 1, temp + 64 - 4, byte_t(0));
}
write_data_bit_length(&(temp[56]));
detail::hash256_block(h_, temp, temp + 64);
}
template <typename OutIter>
void get_hash_bytes(OutIter first, OutIter last) const {
for (const word_t* iter = h_; iter != h_ + 8; ++iter) {
for (std::size_t i = 0; i < 4 && first != last; ++i) {
*(first++) = detail::mask_8bit(
static_cast<byte_t>((*iter >> (24 - 8 * i))));
}
}
}
private:
void add_to_data_length(word_t n) {
word_t carry = 0;
data_length_digits_[0] += n;
for (std::size_t i = 0; i < 4; ++i) {
data_length_digits_[i] += carry;
if (data_length_digits_[i] >= 65536u) {
carry = data_length_digits_[i] >> 16;
data_length_digits_[i] &= 65535u;
} else {
break;
}
}
}
void write_data_bit_length(byte_t* begin) {
word_t data_bit_length_digits[4];
std::copy(data_length_digits_, data_length_digits_ + 4,
data_bit_length_digits);
// convert byte length to bit length (multiply 8 or shift 3 times left)
word_t carry = 0;
for (std::size_t i = 0; i < 4; ++i) {
word_t before_val = data_bit_length_digits[i];
data_bit_length_digits[i] <<= 3;
data_bit_length_digits[i] |= carry;
data_bit_length_digits[i] &= 65535u;
carry = (before_val >> (16 - 3)) & 65535u;
}
// write data_bit_length
for (int i = 3; i >= 0; --i) {
(*begin++) = static_cast<byte_t>(data_bit_length_digits[i] >> 8);
(*begin++) = static_cast<byte_t>(data_bit_length_digits[i]);
}
}
std::vector<byte_t> buffer_;
word_t data_length_digits_[4]; // as 64bit integer (16bit x 4 integer)
word_t h_[8];
};
inline void get_hash_hex_string(const hash256_one_by_one& hasher,
std::string& hex_str) {
byte_t hash[k_digest_size];
hasher.get_hash_bytes(hash, hash + k_digest_size);
return bytes_to_hex_string(hash, hash + k_digest_size, hex_str);
}
inline std::string get_hash_hex_string(const hash256_one_by_one& hasher) {
std::string hex_str;
get_hash_hex_string(hasher, hex_str);
return hex_str;
}
namespace impl {
template <typename RaIter, typename OutIter>
void hash256_impl(RaIter first, RaIter last, OutIter first2, OutIter last2, int,
std::random_access_iterator_tag) {
hash256_one_by_one hasher;
// hasher.init();
hasher.process(first, last);
hasher.finish();
hasher.get_hash_bytes(first2, last2);
}
template <typename InputIter, typename OutIter>
void hash256_impl(InputIter first, InputIter last, OutIter first2,
OutIter last2, int buffer_size, std::input_iterator_tag) {
std::vector<byte_t> buffer(buffer_size);
hash256_one_by_one hasher;
// hasher.init();
while (first != last) {
int size = buffer_size;
for (int i = 0; i != buffer_size; ++i, ++first) {
if (first == last) {
size = i;
break;
}
buffer[i] = *first;
}
hasher.process(buffer.begin(), buffer.begin() + size);
}
hasher.finish();
hasher.get_hash_bytes(first2, last2);
}
}
template <typename InIter, typename OutIter>
void hash256(InIter first, InIter last, OutIter first2, OutIter last2,
int buffer_size = PICOSHA2_BUFFER_SIZE_FOR_INPUT_ITERATOR) {
iflytopsha256::impl::hash256_impl(
first, last, first2, last2, buffer_size,
typename std::iterator_traits<InIter>::iterator_category());
}
template <typename InIter, typename OutContainer>
void hash256(InIter first, InIter last, OutContainer& dst) {
hash256(first, last, dst.begin(), dst.end());
}
template <typename InContainer, typename OutIter>
void hash256(const InContainer& src, OutIter first, OutIter last) {
hash256(src.begin(), src.end(), first, last);
}
template <typename InContainer, typename OutContainer>
void hash256(const InContainer& src, OutContainer& dst) {
hash256(src.begin(), src.end(), dst.begin(), dst.end());
}
template <typename InIter>
void hash256_hex_string(InIter first, InIter last, std::string& hex_str) {
byte_t hashed[k_digest_size];
hash256(first, last, hashed, hashed + k_digest_size);
std::ostringstream oss;
output_hex(hashed, hashed + k_digest_size, oss);
hex_str.assign(oss.str());
}
template <typename InIter>
std::string hash256_hex_string(InIter first, InIter last) {
std::string hex_str;
hash256_hex_string(first, last, hex_str);
return hex_str;
}
inline void hash256_hex_string(const std::string& src, std::string& hex_str) {
hash256_hex_string(src.begin(), src.end(), hex_str);
}
template <typename InContainer>
void hash256_hex_string(const InContainer& src, std::string& hex_str) {
hash256_hex_string(src.begin(), src.end(), hex_str);
}
template <typename InContainer>
std::string hash256_hex_string(const InContainer& src) {
return hash256_hex_string(src.begin(), src.end());
}
template<typename OutIter>void hash256(std::ifstream& f, OutIter first, OutIter last){
hash256(std::istreambuf_iterator<char>(f), std::istreambuf_iterator<char>(), first,last);
}
}// namespace iflytopsha256
#endif // PICOSHA2_H
Write Preview
Loading…
Cancel
Save