com.goterl.lazysodium.interfaces

Interface SecretStream.Lazy

All Known Implementing Classes:

LazySodium, LazySodiumJava

Enclosing interface:

SecretStream

public static interface SecretStream.Lazy

Method Summary

Modifier and Type	Method and Description
SecretStream.State	cryptoSecretStreamInitPull(byte[] header, Key key) Initialises decryption using a state and a key.
SecretStream.State	cryptoSecretStreamInitPush(byte[] header, Key key) Initialise encryption.
Key	cryptoSecretStreamKeygen() Generates a key.
java.lang.String	cryptoSecretStreamPull(SecretStream.State state, java.lang.String cipher, byte[] tag) Decrypt a message without additional data.
java.lang.String	cryptoSecretStreamPush(SecretStream.State state, java.lang.String message, byte tag) Encrypt a message.
void	cryptoSecretStreamRekey(SecretStream.State state) Explicitly rekeys.

Method Detail

cryptoSecretStreamKeygen

Key cryptoSecretStreamKeygen()

Generates a key.

Returns:

Returns a key that's been through Helpers.Lazy.sodiumBin2Hex(byte[]).

cryptoSecretStreamInitPush

SecretStream.State cryptoSecretStreamInitPush(byte[] header,
                                              Key key)
                                       throws SodiumException

Initialise encryption.

Parameters:

header - Header to supply.

key - The key as generated by cryptoSecretStreamKeygen().

Returns:

A state which can be further processed by other functions in secret stream.

Throws:

SodiumException

cryptoSecretStreamPush

java.lang.String cryptoSecretStreamPush(SecretStream.State state,
                                        java.lang.String message,
                                        byte tag)
                                 throws SodiumException

Encrypt a message.

Parameters:

state - State as initialised in cryptoSecretStreamInitPush(byte[], Key).

message - The message to encrypt.

tag - The tag.

Returns:

The cipher string.

Throws:

SodiumException

cryptoSecretStreamInitPull

SecretStream.State cryptoSecretStreamInitPull(byte[] header,
                                              Key key)
                                       throws SodiumException

Initialises decryption using a state and a key.

Parameters:

header - The header of size SecretStream.HEADERBYTES.

key - The key as generated by cryptoSecretStreamKeygen()}.

Returns:

A state for further processing of decryption functions.

Throws:

SodiumException

cryptoSecretStreamPull

java.lang.String cryptoSecretStreamPull(SecretStream.State state,
                                        java.lang.String cipher,
                                        byte[] tag)
                                 throws SodiumException

Decrypt a message without additional data.

Parameters:

state - The state as generated by cryptoSecretStreamInitPull(byte[], Key).

tag - The tag.

cipher - The resulting encrypted message.

Returns:

The decreypted cipher, i.e the message.

Throws:

SodiumException

cryptoSecretStreamRekey

void cryptoSecretStreamRekey(SecretStream.State state)

Explicitly rekeys.

Parameters:

state - The state to update.