1 // Copyright 2018 Brian Smith. 2 // 3 // Permission to use, copy, modify, and/or distribute this software for any 4 // purpose with or without fee is hereby granted, provided that the above 5 // copyright notice and this permission notice appear in all copies. 6 // 7 // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 8 // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9 // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 10 // SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11 // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12 // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13 // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 14 15 /// The IV for a single block encryption. 16 /// 17 /// Intentionally not `Clone` to ensure each is used only once. 18 #[repr(C)] 19 pub struct Iv([u8; IV_LEN]); 20 21 pub const IV_LEN: usize = 16; 22 23 impl Iv { 24 #[inline] assume_unique_for_key(a: [u8; IV_LEN]) -> Self25 pub fn assume_unique_for_key(a: [u8; IV_LEN]) -> Self { 26 Self(a) 27 } 28 29 #[inline] into_bytes_less_safe(self) -> [u8; IV_LEN]30 pub fn into_bytes_less_safe(self) -> [u8; IV_LEN] { 31 self.0 32 } 33 } 34