PICrypt Class Reference

Class for encrypting and decrypting data. Class providing cryptographic operations using the libsodium library, including encryption, decryption, hashing, and digital signatures. It supports both instance-based and static method-based operations. Requires libsodium library initialization. All methods are thread-safe when using different keys. More...

#include <picrypt.h>

Public Member Functions
	PICrypt ()
	Constructor that generates a random key.
	~PICrypt ()
	Destructor.
bool	setKey (const PIByteArray &key)
	Set key to "key", key size must be a sizeKey().
bool	setKey (const PIString &secret)
	Generate and set key from keyphrase "secret".
PIByteArray	key ()
	Returns current key.
PIByteArray	crypt (const PIByteArray &data)
	Encrypt given data "data", result size will be increased by sizeCrypt().
PIByteArray	decrypt (const PIByteArray &crypt_data, bool *ok=0)
	Decrypt given data "crypt_data".
PIByteArray	signMessage (const PIByteArray &data, const PIByteArray &secret_key)
	Calculate digital signature for data.
bool	verifySign (const PIByteArray &data, const PIByteArray &signature, const PIByteArray &public_key)
	Verify digital signature of signed message.
PIByteArray	crypt (const PIByteArray &data, const PIByteArray &public_key, const PIByteArray &secret_key)
	Encrypt given data "data".
PIByteArray	decrypt (const PIByteArray &crypt_data, const PIByteArray &public_key, const PIByteArray &secret_key, bool *ok=0)
	Decrypt given data "crypt_data".

Static Public Member Functions
static PIByteArray	crypt (const PIByteArray &data, PIByteArray key)
	Encrypt given data "data" with key "key", result size will be increased by sizeCrypt().
static PIByteArray	decrypt (const PIByteArray &crypt_data, PIByteArray key, bool *ok=0)
	Decrypt given data "crypt_data" with key "key".
static PIByteArray	hash (PIString secret)
	Generate hash from keyphrase "secret", may be used as a key for encryption.
static PIByteArray	hash (const PIByteArray &data)
	Generate hash from bytearray.
static PIByteArray	hash (const PIByteArray &data, const unsigned char *key, size_t keylen)
	Generate hash from bytearray using provided key.
static size_t	sizeHash ()
	Returns hash size.
static ullong	shorthash (const PIString &s, PIByteArray key=PIByteArray())
	Generate short hash from string "s", may be used for hash table.
static PIByteArray	generateKey ()
	Generate random key.
static PIByteArray	generateRandomBuff (int size)
	Generate random buffer.
static size_t	sizeKey ()
	Returns key size.
static size_t	sizeCrypt ()
	Returns size which be added to data size in encryption process.
static bool	generateSignKeys (PIByteArray &public_key, PIByteArray &secret_key)
	Function randomly generates a secret key and a corresponding public key for digital signature.
static bool	generateSignKeys (PIByteArray &public_key, PIByteArray &secret_key, const PIByteArray &seed)
	Function generates a secret key from input data and a corresponding public key for digital signature.
static PIByteArray	extractSignPublicKey (const PIByteArray &secret_key)
	Function extract sign public key from sing secret key.
static bool	generateKeypair (PIByteArray &public_key, PIByteArray &secret_key)
	Function randomly generates a secret key and a corresponding public key for authenticated encryption.
static bool	generateKeypair (PIByteArray &public_key, PIByteArray &secret_key, const PIByteArray &seed)
	Function generates a secret key from input data and a corresponding public key for authenticated encryption.
static PIByteArray	passwordHash (PIString password, const PIByteArray &seed)
	Generate password hash from "password".
static PIString	version ()
	Returns libsodium version.

Detailed Description

Class for encrypting and decrypting data. Class providing cryptographic operations using the libsodium library, including encryption, decryption, hashing, and digital signatures. It supports both instance-based and static method-based operations. Requires libsodium library initialization. All methods are thread-safe when using different keys.