#include <pk_ops_impl.h>

Inheritance diagram for Botan::PK_Ops::KEM_Encryption_with_KDF:

Public Member Functions
virtual size_t	encapsulated_key_length () const =0

void	kem_encrypt (secure_vector< uint8_t > &out_encapsulated_key, secure_vector< uint8_t > &out_shared_key, size_t desired_shared_key_len, RandomNumberGenerator &rng, const uint8_t salt[], size_t salt_len) override final

size_t	shared_key_length (size_t desired_shared_key_len) const override final

Protected Member Functions
	KEM_Encryption_with_KDF (std::string_view kdf)

virtual void	raw_kem_encrypt (secure_vector< uint8_t > &out_encapsulated_key, secure_vector< uint8_t > &raw_shared_key, RandomNumberGenerator &rng)=0

virtual size_t	raw_kem_shared_key_length () const =0

	~KEM_Encryption_with_KDF ()=default

Detailed Description

Definition at line 123 of file pk_ops_impl.h.

Constructor & Destructor Documentation

◆ KEM_Encryption_with_KDF()

Botan::PK_Ops::KEM_Encryption_with_KDF::KEM_Encryption_with_KDF ( std::string_view kdf )

explicitprotected

Definition at line 224 of file pk_ops.cpp.

   {
   if(kdf != "Raw")
      m_kdf = KDF::create_or_throw(kdf);
   }

References Botan::KDF::create_or_throw().

◆ ~KEM_Encryption_with_KDF()

Botan::PK_Ops::KEM_Encryption_with_KDF::~KEM_Encryption_with_KDF ( )

protecteddefault

Member Function Documentation

◆ encapsulated_key_length()

virtual size_t Botan::PK_Ops::KEM_Encryption::encapsulated_key_length ( ) const

pure virtualinherited

◆ kem_encrypt()

void Botan::PK_Ops::KEM_Encryption_with_KDF::kem_encrypt	(	secure_vector< uint8_t > &	out_encapsulated_key,
		secure_vector< uint8_t > &	out_shared_key,
		size_t	desired_shared_key_len,
		RandomNumberGenerator &	rng,
		const uint8_t	salt[],
		size_t	salt_len
	)

finaloverridevirtual

Implements Botan::PK_Ops::KEM_Encryption.

Definition at line 198 of file pk_ops.cpp.

   {
   if(salt_len > 0 && m_kdf == nullptr)
      throw Invalid_Argument("PK_KEM_Encryptor::encrypt requires a KDF to use a salt");
 
   secure_vector<uint8_t> raw_shared;
   this->raw_kem_encrypt(out_encapsulated_key, raw_shared, rng);
 
   BOTAN_ASSERT_EQUAL(out_encapsulated_key.size(), this->encapsulated_key_length(),
                      "KEM produced encapsulated key with different length than expected");
 
   BOTAN_ASSERT_EQUAL(raw_shared.size(), this->raw_kem_shared_key_length(),
                      "KEM produced shared key with different length than expected");
 
   out_shared_key = (m_kdf)
      ? m_kdf->derive_key(desired_shared_key_len,
                          raw_shared.data(), raw_shared.size(),
                          salt, salt_len)
      : raw_shared;
   }

References BOTAN_ASSERT_EQUAL.

◆ raw_kem_encrypt()

virtual void Botan::PK_Ops::KEM_Encryption_with_KDF::raw_kem_encrypt	(	secure_vector< uint8_t > &	out_encapsulated_key,
		secure_vector< uint8_t > &	raw_shared_key,
		RandomNumberGenerator &	rng
	)

protectedpure virtual

◆ raw_kem_shared_key_length()

virtual size_t Botan::PK_Ops::KEM_Encryption_with_KDF::raw_kem_shared_key_length ( ) const

protectedpure virtual

◆ shared_key_length()

size_t Botan::PK_Ops::KEM_Encryption_with_KDF::shared_key_length ( size_t desired_shared_key_len ) const