Template Class desfire::key_storage< KeyLength, false >

• Defined in File keys.hpp

Inheritance Relationships

Base Type

• private desfire::key_storage< KeyLength, true > (Template Class desfire::key_storage< KeyLength, true >)

Class Documentation

template<std::size_t KeyLength>
class key_storage<KeyLength, false> : private desfire::key_storage<KeyLength, true>

Mixin used for holding the key body where the version is stored as a separate byte.

See also

• key_storage<KeyLength,true>

• key_base

Note

This is also used to provide most of the methods key_base.

Template Parameters:

KeyLength – Length of the key.

Public Types

using key_body_t = typename key_storage<KeyLength, true>::key_body_t

Key body alias.

Public Functions

constexpr key_storage() = default

Constructs a key filled with zeroes and version 0.

explicit key_storage(random_oracle rng, std::uint8_t v = 0)

Constructs a random key body with a pre-defined version.

Parameters:

• rng – Random number generator function to use for filling the key body.

• v – Version of this key.

explicit constexpr key_storage(key_body_t k, std::uint8_t v = 0)

Constructs a key storage containing the given key body k and the version v.

Parameters:

• k – Key body.

• v – Version.

constexpr std::uint8_t version() const

Version of the key.

Note

This deliberately shadows its private base class’s member.

Returns:

A number in the range 0..255 (included).

inline void set_version(std::uint8_t v)

Changes the key version to v.

Note

This deliberately shadows its private base class’s member.

Parameters:

v – A byte.

void randomize(random_oracle rng)

Randomizes the key without changing version.

Note

This deliberately shadows its private base class’s member.

Parameters:

rng – Random number generator function to use for filling the key body.