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https://github.com/DarkStore-3DS/Project_CTR.git
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jakcron
119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/**
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* @file RsaImpl.h
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* @brief Declaration of tc::crypto::detail::RsaImpl
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* @author Jack (jakcron)
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* @version 0.1
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* @date 2020/09/12
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**/
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#pragma once
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#include <tc/types.h>
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#include <tc/ArgumentNullException.h>
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#include <tc/ArgumentOutOfRangeException.h>
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#include <tc/crypto/CryptoException.h>
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namespace tc { namespace crypto { namespace detail {
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/**
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* @class RsaImpl
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* @brief This class implements the RSA algorithm.
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*/
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class RsaImpl
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{
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public:
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/**
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* @brief Default constructor.
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*
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* @post
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* - State is None. @ref initialize() must be called before use.
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*/
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RsaImpl();
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~RsaImpl();
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/**
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* @brief Initialize RSA state with key.
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*
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* @param[in] key_bit_size Size of rsa key in bits.
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* @param[in] n Pointer to modulus data.
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* @param[in] n_size Size in bytes of modulus data.
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* @param[in] p Pointer to prime p data.
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* @param[in] p_size Size in bytes of prime p data.
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* @param[in] q Pointer to prime q data.
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* @param[in] q_size Size in bytes of prime q data.
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* @param[in] d Pointer to private exponent data.
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* @param[in] d_size Size in bytes of private exponent data.
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* @param[in] e Pointer to public exponent data.
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* @param[in] e_size Size in bytes of public exponent data.
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*
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* @pre
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* - @p key_bit_size must a multiple of 8 bits (byte aligned).
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* @post
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* - Instance is now in initialized state.
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*
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* @throw tc::ArgumentNullException @p n was null when @p n_size was not 0.
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* @throw tc::ArgumentNullException @p n was not null when @p n_size was 0.
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* @throw tc::ArgumentNullException @p p was null when @p p_size was not 0.
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* @throw tc::ArgumentNullException @p p was not null when @p p_size was 0.
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* @throw tc::ArgumentNullException @p q was null when @p q_size was not 0.
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* @throw tc::ArgumentNullException @p q was not null when @p q_size was 0.
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* @throw tc::ArgumentNullException @p d was null when @p d_size was not 0.
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* @throw tc::ArgumentNullException @p d was not null when @p d_size was 0.
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* @throw tc::ArgumentNullException @p e was null when @p e_size was not 0.
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* @throw tc::ArgumentNullException @p e was not null when @p e_size was 0.
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* @throw tc::ArgumentOutOfRangeException @p key_bit_size was not a multiple of 8 bits.
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*/
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void initialize(size_t key_bit_size, const byte_t* n, size_t n_size, const byte_t* p, size_t p_size, const byte_t* q, size_t q_size, const byte_t* d, size_t d_size, const byte_t* e, size_t e_size);
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/**
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* @brief Transform data block using public key.
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*
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* @param[out] dst Buffer to store transformed block.
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* @param[in] src Pointer to block to transform.
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*
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* @pre
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* - Instance is in initialized state.
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*
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* @details
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* This transforms block_size number of bytes of data from @p src, writing it to @p dst.
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*
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* @note
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* - @p dst and @p src can be the same pointer.
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*
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* @throw tc::ArgumentNullException @p dst was null.
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* @throw tc::ArgumentNullException @p src was null.
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*/
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void publicTransform(byte_t* dst, const byte_t* src);
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/**
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* @brief Transform data block using private key.
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*
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* @param[out] dst Buffer to store transformed block.
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* @param[in] src Pointer to block to transform.
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*
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* @pre
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* - Instance is in initialized state.
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*
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* @details
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* This transforms block_size number of bytes of data from @p src, writing it to @p dst.
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*
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* @note
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* - @p dst and @p src can be the same pointer.
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*
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* @throw tc::ArgumentNullException @p dst was null.
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* @throw tc::ArgumentNullException @p src was null.
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*/
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void privateTransform(byte_t* dst, const byte_t* src);
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private:
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enum class State
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{
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None,
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Initialized
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};
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State mState;
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struct ImplCtx;
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std::unique_ptr<ImplCtx> mImplCtx;
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};
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}}} // namespace tc::crypto::detail
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