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#pragma once
#include <argon2.h>
namespace saw {
namespace crypto {
struct Argon2i {};
}
template<typename Crypto>
class hash;
template<>
class hash<crypto::Argon2i> {
public:
error_or<data<schema::String>> apply(const data<schema::String>& input, const data<schema::String>& salt){
SAW_ASSERT(input.size() > 0u){
return make_error<err::invalid_state>("Strings for hashing shouldn't be zero");
}
uint32_t t_cost = 2;
uint32_t m_cost = 1<<16;
uint32_t parallel = 1;
const char* salt_c_ptr = nullptr;
if(salt.size() > 0){
salt_c_ptr = &salt.at(0);
}
data<schema::String> hash;
try {
hash = {128u};
}catch(const std::exception&){
return make_error<err::out_of_memory>("Couldn't allocate hash string");
}
int rv = argon2i_hash_raw(t_cost, m_cost, parallel, &input.at(0), input.size(), salt_c_ptr, salt.size(), &hash.at(0), hash.size());
if(rv != ARGON2_OK){
return make_error<err::invalid_state>("Failed to hash");
}
return hash;
}
};
}
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