Module sodiumoxide::crypto::stream::xchacha20 [−] [src]

xchacha20. The same construction as xsalsa20 but using chacha20 instead of salsa20 as the underlying stream cipher. This cipher is conjectured to meet the standard notion of unpredictability.

Structs

Key	`Key` for symmetric encryption
Nonce	`Nonce` for symmetric encryption

Constants

KEYBYTES	Number of bytes in a `Key`.
NONCEBYTES	Number of bytes in a `Nonce`.

Functions

gen_key	`gen_key()` randomly generates a key for symmetric encryption
gen_nonce	`gen_nonce()` randomly generates a nonce for symmetric encryption
stream	`stream()` produces a `len`-byte stream `c` as a function of a secret key `k` and a nonce `n`.
stream_xor	`stream_xor()` encrypts a message `m` using a secret key `k` and a nonce `n`. The `stream_xor()` function returns the ciphertext `c`.
stream_xor_ic	`stream_xor_ic()` encrypts a message `m` using a secret key `k` and a nonce `n`, it is similar to `stream_xor()` but allows the caller to set the value of the initial block counter `ic`.
stream_xor_ic_inplace	`stream_xor_ic_inplace()` encrypts a message `m` using a secret key `k` and a nonce `n`, it is similar to `stream_xor_inplace()` but allows the caller to set the value of the initial block counter `ic`. The `stream_xor_ic_inplace()` function encrypts the message in place.
stream_xor_inplace	`stream_xor_inplace()` encrypts a message `m` using a secret key `k` and a nonce `n`. The `stream_xor_inplace()` function encrypts the message in place.