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function to get the sha256 string

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This commit is contained in:
Antonin Portelli 2018-10-08 19:00:50 +01:00
parent fe6a372f75
commit 936eaac8e1
2 changed files with 16 additions and 6 deletions
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6
Grid/lattice/Lattice_rng.h
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@ -392,14 +392,10 @@ namespace Grid {
void SeedUniqueString(const std::string &s){
std::vector<int> seeds;
std::stringstream sha;
seeds = GridChecksum::sha256_seeds(s);
for(int i=0;i<seeds.size();i++) {
sha << std::hex << seeds[i];
}
std::cout << GridLogMessage << "Intialising parallel RNG with unique string '"
<< s << "'" << std::endl;
std::cout << GridLogMessage << "Seed SHA256: " << sha.str() << std::endl;
std::cout << GridLogMessage << "Seed SHA256: " << GridChecksum::sha256_string(seeds) << std::endl;
SeedFixedIntegers(seeds);
}
void SeedFixedIntegers(const std::vector<int> &seeds){

16
Grid/util/Sha.h
View File

@ -38,7 +38,21 @@ public:
{
return ::crc32(0L,(unsigned char *)data,bytes);
}
static inline std::vector<unsigned char> sha256(void *data,size_t bytes)
template <typename T>
static inline std::string sha256_string(const std::vector<T> &hash)
{
std::stringstream sha;
std::string s;
for(unsigned int i = 0; i < hash.size(); i++)
{
sha << std::hex << static_cast<unsigned int>(hash[i]);
}
s = sha.str();
return s;
}
static inline std::vector<unsigned char> sha256(const void *data,size_t bytes)
{
std::vector<unsigned char> hash(SHA256_DIGEST_LENGTH);
SHA256_CTX sha256;