password_hashing_pbkdf2.h

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#ifndef CPPSECURITY_PASSWORD_HASHING_PBKDF2_H
#define CPPSECURITY_PASSWORD_HASHING_PBKDF2_H
 
#include "password_hashing.h"
 
namespace CppSecurity {
 
enum class PBKDF2
{
    HMAC_SHA1,      
    HMAC_SHA256,    
    HMAC_SHA512     
};
 
 
template <class TOutputStream>
TOutputStream& operator<<(TOutputStream& stream, PBKDF2 algorithm);
 
 
class PBKDF2PasswordHashing : public PasswordHashing
{
public:
 
    PBKDF2PasswordHashing(size_t hash_length = 32, size_t salt_length = 32, PBKDF2 algorithm = PBKDF2::HMAC_SHA512, size_t iterations = 1000);
    PBKDF2PasswordHashing(const PBKDF2PasswordHashing&) = default;
    PBKDF2PasswordHashing(PBKDF2PasswordHashing&&) = default;
    ~PBKDF2PasswordHashing() = default;
 
    PBKDF2PasswordHashing& operator=(const PBKDF2PasswordHashing&) = default;
    PBKDF2PasswordHashing& operator=(PBKDF2PasswordHashing&&) = default;
 
    PBKDF2 algorithm() const noexcept { return _algorithm; }
    size_t iterations() const noexcept { return _iterations; }
 
    // Implementation of PasswordHashing
    const std::string& name() const override { return _name; }
    std::string GenerateHash(std::string_view password, std::string_view salt) const override;
    bool Validate(std::string_view password, std::string_view hash, std::string_view salt) const override;
 
private:
    static std::string _name;
    PBKDF2 _algorithm;
    size_t _iterations;
};
 
} // namespace CppSecurity
 
#include "password_hashing_pbkdf2.inl"
 
#endif // CPPSECURITY_PASSWORD_HASHING_PBKDF2_H