EPS::Cipher Namespace Reference

Cipher takes care of calling OpenSSL to encrypt and decrypt NetBuffer objects. More...

Functions
void	reset (void)
	Reset OpenSSL. More...
void	initialize (EPS::StrMap &configuration)
	Initialize OpenSSL ciphers. More...
void	get_cipher_key_and_iv (EPS::StrMap &configuration)
	Get and parse the key and iv from configuration. More...
EPS::NetBuffer *	encrypt (EPS::NetBuffer &buffer)
	Encrypt a network buffer. Return a pointer to the newly-encrypted buffer. The original buffer remains untouched. More...
EPS::NetBuffer *	decrypt (EPS::NetBuffer &buffer)
	Decrypt a network buffer. Return a pointer to the newly-decrypted buffer. The original buffer remains untouched. More...
EPS::NetBuffer *	decrypt_header (EPS::NetBuffer &buffer)
	Decrypt only the first few bytes ("header") of a network buffer. Return a pointer to the newly-decrypted buffer. The original buffer remains untouched. More...

Variables
std::array< uint8_t, 32 >	key
	OpenSSL: 256-bit encryption/decryption key. More...
std::array< uint8_t, 16 >	iv
	OpenSSL: 128-bit encryption/decryption iv. More...
const EVP_CIPHER *	cipher = nullptr
	OpenSSL: cipher to use for encryption/decryption. More...
EVP_CIPHER_CTX *	decrypt_ctx = nullptr
	OpenSSL: ctx needed for decryption. More...
EVP_CIPHER_CTX *	encrypt_ctx = nullptr
	OpenSSL: ctx needed for encryption. More...
size_t	size_of_keys_in_bytes = 0
	OpenSSL: size of the cipher key. More...
size_t	size_of_iv_in_bytes = 0
	OpenSSL: size of the cipher initialization vector. More...
std::string	name = "<invalid>"
	OpenSSL: text name of the cipher in use. More...
std::string	hash = "<invalid>"
	nonsense text string to help validate encryption key and iv More...

Detailed Description

Cipher takes care of calling OpenSSL to encrypt and decrypt NetBuffer objects.

Function Documentation

decrypt()

EPS::NetBuffer * EPS::Cipher::decrypt

(

EPS::NetBuffer &

buffer

)

Decrypt a network buffer. Return a pointer to the newly-decrypted buffer. The original buffer remains untouched.

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decrypt_header()

EPS::NetBuffer * EPS::Cipher::decrypt_header

(

EPS::NetBuffer &

buffer

)

Decrypt only the first few bytes ("header") of a network buffer. Return a pointer to the newly-decrypted buffer. The original buffer remains untouched.

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encrypt()

EPS::NetBuffer * EPS::Cipher::encrypt

(

EPS::NetBuffer &

buffer

)

Encrypt a network buffer. Return a pointer to the newly-encrypted buffer. The original buffer remains untouched.

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get_cipher_key_and_iv()

void EPS::Cipher::get_cipher_key_and_iv

(

EPS::StrMap &

configuration

)

Get and parse the key and iv from configuration.

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initialize()

void EPS::Cipher::initialize

(

EPS::StrMap &

configuration

)

Initialize OpenSSL ciphers.

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reset()

void EPS::Cipher::reset

(

void

)

Reset OpenSSL.

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Variable Documentation

cipher

const EVP_CIPHER * EPS::Cipher::cipher = nullptr

OpenSSL: cipher to use for encryption/decryption.

decrypt_ctx

EVP_CIPHER_CTX * EPS::Cipher::decrypt_ctx = nullptr

OpenSSL: ctx needed for decryption.

encrypt_ctx

EVP_CIPHER_CTX * EPS::Cipher::encrypt_ctx = nullptr

OpenSSL: ctx needed for encryption.

hash

std::string EPS::Cipher::hash = "<invalid>"

nonsense text string to help validate encryption key and iv

iv

std::array< uint8_t, 16 > EPS::Cipher::iv

OpenSSL: 128-bit encryption/decryption iv.

key

std::array< uint8_t, 32 > EPS::Cipher::key

OpenSSL: 256-bit encryption/decryption key.

name

std::string EPS::Cipher::name = "<invalid>"

OpenSSL: text name of the cipher in use.

size_of_iv_in_bytes

size_t EPS::Cipher::size_of_iv_in_bytes = 0

OpenSSL: size of the cipher initialization vector.

size_of_keys_in_bytes

size_t EPS::Cipher::size_of_keys_in_bytes = 0

OpenSSL: size of the cipher key.