Botan::EME Class Reference

#include <eme.h>

Inheritance diagram for Botan::EME:

Public Member Functions
secure_vector< uint8_t >	encode (const uint8_t in[], size_t in_length, size_t key_length, RandomNumberGenerator &rng) const
secure_vector< uint8_t >	encode (const secure_vector< uint8_t > &in, size_t key_length, RandomNumberGenerator &rng) const
virtual size_t	maximum_input_size (size_t keybits) const =0
virtual secure_vector< uint8_t >	pad (const uint8_t in[], size_t in_length, size_t key_length, RandomNumberGenerator &rng) const =0
virtual secure_vector< uint8_t >	unpad (uint8_t &valid_mask, const uint8_t in[], size_t in_len) const =0
virtual	~EME ()=default

Detailed Description

Encoding Method for Encryption

Definition at line 20 of file eme.h.

Constructor & Destructor Documentation

~EME()

virtual Botan::EME::~EME ( )

virtualdefault

Member Function Documentation

encode() [1/2]

secure_vector< uint8_t > Botan::EME::encode	(	const uint8_t	in[],
		size_t	in_length,
		size_t	key_length,
		RandomNumberGenerator &	rng
	)		const

Encode an input

Parameters

in	the plaintext
in_length	length of plaintext in bytes
key_length	length of the key in bits
rng	a random number generator

Returns

encoded plaintext

Definition at line 76 of file eme.cpp.

References pad().

   {
   return pad(msg, msg_len, key_bits, rng);
   }

encode() [2/2]

secure_vector< uint8_t > Botan::EME::encode	(	const secure_vector< uint8_t > &	in,
		size_t	key_length,
		RandomNumberGenerator &	rng
	)		const

Encode an input

Parameters

in	the plaintext
key_length	length of the key in bits
rng	a random number generator

Returns

encoded plaintext

Definition at line 86 of file eme.cpp.

References pad().

   {
   return pad(msg.data(), msg.size(), key_bits, rng);
   }

maximum_input_size()

virtual size_t Botan::EME::maximum_input_size ( size_t  keybits ) const

pure virtual

Return the maximum input size in bytes we can support

Parameters

keybits

the size of the key in bits

Returns

upper bound of input in bytes

Implemented in Botan::OAEP, Botan::EME_PKCS1v15, and Botan::EME_Raw.

pad()

virtual secure_vector<uint8_t> Botan::EME::pad ( const uint8_t  in[], size_t  in_length, size_t  key_length, RandomNumberGenerator &  rng  ) const

pure virtual

Encode an input

Parameters

in	the plaintext
in_length	length of plaintext in bytes
key_length	length of the key in bits
rng	a random number generator

Returns

encoded plaintext

Referenced by encode().

unpad()

virtual secure_vector<uint8_t> Botan::EME::unpad ( uint8_t &  valid_mask, const uint8_t  in[], size_t  in_len  ) const

pure virtual

Decode an input

Parameters

valid_mask	written to specifies if output is valid
in	the encoded plaintext
in_len	length of encoded plaintext in bytes

Returns

bytes of out[] written to along with validity mask (0xFF if valid, else 0x00)

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

• src/lib/pk_pad/eme.h
• src/lib/pk_pad/eme.cpp