keepass::AesCipher Class Reference

AES-256-ECB block cipher using OpenSSL's EVP interface. More...

#include <cipher.hh>

Inheritance diagram for keepass::AesCipher:

Public Member Functions
	AesCipher (const uint8_t *key)
	Constructs an AES cipher with a zero initialization vector.
	AesCipher (const uint8_t *key, const std::array< uint8_t, 16 > &init_vec)
	Constructs an AES cipher with a given initialization vector.
	~AesCipher ()
	Destroys the cipher and frees the OpenSSL contexts.
const std::array< uint8_t, 16 > &	InitializationVector () const override
	Returns the initialization vector.
void	Decrypt (const std::array< uint8_t, 16 > &src, std::array< uint8_t, 16 > &dst) const override
	Decrypts a single 16-byte block using AES-256-ECB.
void	Encrypt (const std::array< uint8_t, 16 > &src, std::array< uint8_t, 16 > &dst) const override
	Encrypts a single 16-byte block using AES-256-ECB.
Public Member Functions inherited from keepass::Cipher< 16 >
virtual void	Decrypt (const std::array< uint8_t, N > &src, std::array< uint8_t, N > &dst) const=0
	Decrypts a single block.
virtual void	Encrypt (const std::array< uint8_t, N > &src, std::array< uint8_t, N > &dst) const=0
	Encrypts a single block.

Detailed Description

AES-256-ECB block cipher using OpenSSL's EVP interface.

Constructor & Destructor Documentation

AesCipher() [1/2]

keepass::AesCipher::AesCipher ( const uint8_t *  key )

inlineexplicit

Constructs an AES cipher with a zero initialization vector.

Parameters

key	The 256-bit (32-byte) encryption key.

AesCipher() [2/2]

keepass::AesCipher::AesCipher	(	const uint8_t *	key,
		const std::array< uint8_t, 16 > &	init_vec
	)

Constructs an AES cipher with a given initialization vector.

Parameters

key	The 256-bit (32-byte) encryption key.
init_vec	The 16-byte initialization vector.

Exceptions

InternalError

If the OpenSSL cipher context cannot be created or initialized.

Member Function Documentation

Decrypt()

void keepass::AesCipher::Decrypt ( const std::array< uint8_t, 16 > &  src, std::array< uint8_t, 16 > &  dst  ) const

override

Decrypts a single 16-byte block using AES-256-ECB.

Parameters

src	The ciphertext block to decrypt.
dst	The resulting plaintext block.

Encrypt()

void keepass::AesCipher::Encrypt ( const std::array< uint8_t, 16 > &  src, std::array< uint8_t, 16 > &  dst  ) const

override

Encrypts a single 16-byte block using AES-256-ECB.

Parameters

src	The plaintext block to encrypt.
dst	The resulting ciphertext block.

InitializationVector()

const std::array< uint8_t, 16 > & keepass::AesCipher::InitializationVector ( ) const

inlineoverridevirtual

Returns the initialization vector.

Implements keepass::Cipher< 16 >.

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

• cipher.hh