Function olm_sys::olm_group_encrypt

pub unsafe extern "C" fn olm_group_encrypt(
    session: *mut OlmOutboundGroupSession, 
    plaintext: *const u8, 
    plaintext_length: usize, 
    message: *mut u8, 
    message_length: usize
) -> usize

Encrypt some plain-text. Returns the length of the encrypted message or olm_error() on failure. On failure last_error will be set with an error code. The last_error will be OUTPUT_BUFFER_TOO_SMALL if the output buffer is too small.