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123 lines
2.4 KiB
C++
123 lines
2.4 KiB
C++
#ifndef XRPL_PROTOCOL_SEED_H_INCLUDED
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#define XRPL_PROTOCOL_SEED_H_INCLUDED
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#include <xrpl/basics/Slice.h>
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#include <xrpl/basics/base_uint.h>
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#include <xrpl/protocol/tokens.h>
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#include <array>
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#include <optional>
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namespace ripple {
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/** Seeds are used to generate deterministic secret keys. */
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class Seed
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{
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private:
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std::array<uint8_t, 16> buf_;
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public:
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using const_iterator = std::array<uint8_t, 16>::const_iterator;
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Seed() = delete;
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Seed(Seed const&) = default;
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Seed&
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operator=(Seed const&) = default;
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/** Destroy the seed.
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The buffer will first be securely erased.
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*/
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~Seed();
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/** Construct a seed */
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/** @{ */
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explicit Seed(Slice const& slice);
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explicit Seed(uint128 const& seed);
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/** @} */
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std::uint8_t const*
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data() const
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{
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return buf_.data();
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}
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std::size_t
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size() const
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{
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return buf_.size();
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}
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const_iterator
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begin() const noexcept
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{
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return buf_.begin();
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}
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const_iterator
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cbegin() const noexcept
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{
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return buf_.cbegin();
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}
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const_iterator
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end() const noexcept
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{
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return buf_.end();
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}
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const_iterator
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cend() const noexcept
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{
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return buf_.cend();
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}
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};
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//------------------------------------------------------------------------------
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/** Create a seed using secure random numbers. */
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Seed
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randomSeed();
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/** Generate a seed deterministically.
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The algorithm is specific to Ripple:
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The seed is calculated as the first 128 bits
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of the SHA512-Half of the string text excluding
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any terminating null.
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@note This will not attempt to determine the format of
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the string (e.g. hex or base58).
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*/
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Seed
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generateSeed(std::string const& passPhrase);
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/** Parse a Base58 encoded string into a seed */
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template <>
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std::optional<Seed>
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parseBase58(std::string const& s);
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/** Attempt to parse a string as a seed.
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@param str the string to parse
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@param rfc1751 true if we should attempt RFC1751 style parsing (deprecated)
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* */
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std::optional<Seed>
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parseGenericSeed(std::string const& str, bool rfc1751 = true);
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/** Encode a Seed in RFC1751 format */
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std::string
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seedAs1751(Seed const& seed);
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/** Format a seed as a Base58 string */
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inline std::string
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toBase58(Seed const& seed)
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{
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return encodeBase58Token(TokenType::FamilySeed, seed.data(), seed.size());
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}
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} // namespace ripple
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#endif
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