Program Listing for File crypto.hpp

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//        Copyright Maarten L. Hekkelman, 2019-2020
//   Distributed under the Boost Software License, Version 1.0.
//      (See accompanying file LICENSE_1_0.txt or copy at
//            http://www.boost.org/LICENSE_1_0.txt)
//
// --------------------------------------------------------------------

#pragma once

#include <zeep/config.hpp>

#include <exception>
#include <string>


namespace zeep
{

// --------------------------------------------------------------------
// encoding/decoding

class invalid_base64 : public std::exception
{
  public:
    invalid_base64() {}

    const char* what() const noexcept { return "invalid base64 input"; }
};

std::string encode_base64(std::string_view data, size_t wrap_width = 0);

std::string decode_base64(std::string_view data);

// The base64url versions are slightly different

std::string encode_base64url(std::string_view data);

std::string decode_base64url(std::string data);

// And base32 might be handy as well, RFC 4648 (see https://en.wikipedia.org/wiki/Base32)

class invalid_base32 : public std::exception
{
  public:
    invalid_base32() {}

    const char* what() const noexcept { return "invalid base32 input"; }
};

std::string encode_base32(std::string_view data, size_t wrap_width = 0);

std::string decode_base32(std::string_view data);

class invalid_hex : public std::exception
{
  public:
    invalid_hex() {}

    const char* what() const noexcept { return "invalid hexadecimal input"; }
};

std::string encode_hex(std::string_view data);

std::string decode_hex(std::string_view data);

// --------------------------------------------------------------------
// random bytes

std::string random_hash();

// --------------------------------------------------------------------
// hashing

std::string md5(std::string_view data);

std::string sha1(std::string_view data);

std::string sha1(std::streambuf& data);

std::string sha256(std::string_view data);

// --------------------------------------------------------------------
// hmac

std::string hmac_md5(std::string_view message, std::string_view key);

std::string hmac_sha1(std::string_view message, std::string_view key);

std::string hmac_sha256(std::string_view message, std::string_view key);

// --------------------------------------------------------------------
// key derivation based on password (PBKDF2)

std::string pbkdf2_hmac_sha1(std::string_view salt,
    std::string_view password, unsigned iterations, unsigned keyLength);

std::string pbkdf2_hmac_sha256(std::string_view salt,
    std::string_view password, unsigned iterations, unsigned keyLength);

}