nil::crypto3::block::basic_shacal Class Reference

#include <basic_shacal.hpp>

Inheritance diagram for nil::crypto3::block::basic_shacal:

Collaboration diagram for nil::crypto3::block::basic_shacal:

Public Types
typedef policy_type::block_type	block_type
typedef policy_type::key_type	key_type
typedef policy_type::schedule_type	schedule_type
typedef policy_type::word_type	word_type

Public Member Functions
block_type	decrypt (const block_type &ciphertext) const
block_type	encrypt (const block_type &plaintext) const

Static Public Attributes
constexpr static const std::size_t	block_bits = policy_type::block_bits
constexpr static const std::size_t	block_words = policy_type::block_words
constexpr static const std::size_t	key_bits = policy_type::key_bits
constexpr static const std::size_t	key_words = policy_type::key_words
constexpr static const std::size_t	rounds = policy_type::rounds
constexpr static const std::size_t	word_bits = policy_type::word_bits

Protected Types
typedef detail::shacal_policy	policy_type

Protected Member Functions
	basic_shacal (const schedule_type &s)
virtual	~basic_shacal ()

Detailed Description

Encrypt implemented directly from the SHA standard as found at http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf

Decrypt is a straight-forward inverse

In SHA terminology:

• plaintext = H^(i-1)
• ciphertext = H^(i)
• key = M^(i)
• schedule = W

The algorithms for SHA(-0) and SHA-1 are identical apart from the key scheduling, so encapsulate that as a class that takes an already-prepared schedule. (Constructor is protected to help keep people from accidentally giving it just a key in a schedule.)

Member Typedef Documentation

block_type

typedef policy_type::block_type nil::crypto3::block::basic_shacal::block_type

key_type

typedef policy_type::key_type nil::crypto3::block::basic_shacal::key_type

policy_type

typedef detail::shacal_policy nil::crypto3::block::basic_shacal::policy_type

protected

schedule_type

typedef policy_type::schedule_type nil::crypto3::block::basic_shacal::schedule_type

word_type

typedef policy_type::word_type nil::crypto3::block::basic_shacal::word_type

Constructor & Destructor Documentation

basic_shacal()

nil::crypto3::block::basic_shacal::basic_shacal ( const schedule_type &  s )

inlineprotected

~basic_shacal()

virtual nil::crypto3::block::basic_shacal::~basic_shacal ( )

inlineprotectedvirtual

Member Function Documentation

decrypt()

block_type nil::crypto3::block::basic_shacal::decrypt ( const block_type &  ciphertext ) const

inline

encrypt()

block_type nil::crypto3::block::basic_shacal::encrypt ( const block_type &  plaintext ) const

inline

Member Data Documentation

block_bits

constexpr static const std::size_t nil::crypto3::block::basic_shacal::block_bits = policy_type::block_bits

staticconstexpr

block_words

constexpr static const std::size_t nil::crypto3::block::basic_shacal::block_words = policy_type::block_words

staticconstexpr

key_bits

constexpr static const std::size_t nil::crypto3::block::basic_shacal::key_bits = policy_type::key_bits

staticconstexpr

key_words

constexpr static const std::size_t nil::crypto3::block::basic_shacal::key_words = policy_type::key_words

staticconstexpr

rounds

constexpr static const std::size_t nil::crypto3::block::basic_shacal::rounds = policy_type::rounds

staticconstexpr

word_bits

constexpr static const std::size_t nil::crypto3::block::basic_shacal::word_bits = policy_type::word_bits

staticconstexpr

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The documentation for this class was generated from the following file:

• basic_shacal.hpp