Function nrfxlib_sys::ocrypto_chacha20_update

source · 
pub unsafe extern "C" fn ocrypto_chacha20_update(
    ctx: *mut ocrypto_chacha20_ctx,
    c: *mut u8,
    m: *const u8,
    m_len: usize
)
Expand description

ChaCha20 encoder.

The message * m - is ChaCha20 encrypted and the resulting cipher stream is writen to * c - .

This function can be called repeatedly on arbitrarily small chunks of a larger message until the whole message has been processed.

  • ctx - Encoder state.
  • c - Generated ciphertext. Same length as input message.
  • m - Input message.
  • m_len - Length of * c - and * m - ; * m_len - < 2^38 bytes.

@remark Initialization of the encoder state * ctx - through * ocrypto_chacha20_init - is required before this function can be called.