rust_sodium-sys 0.1.2

// crypto_core_salsa20.h

pub const crypto_core_salsa20_OUTPUTBYTES: usize = 64;
pub const crypto_core_salsa20_INPUTBYTES: usize = 16;
pub const crypto_core_salsa20_KEYBYTES: usize = 32;
pub const crypto_core_salsa20_CONSTBYTES: usize = 16;

extern "C" {
    pub fn crypto_core_salsa20_outputbytes() -> size_t;
    pub fn crypto_core_salsa20_inputbytes() -> size_t;
    pub fn crypto_core_salsa20_keybytes() -> size_t;
    pub fn crypto_core_salsa20_constbytes() -> size_t;

    pub fn crypto_core_salsa20(out: *mut u8, in_: *const u8, k: *const u8, c: *const u8) -> c_int;
}

#[test]
fn test_crypto_core_salsa20_outputbytes() {
    assert!(unsafe { crypto_core_salsa20_outputbytes() as usize } ==
            crypto_core_salsa20_OUTPUTBYTES)
}

#[test]
fn test_crypto_core_salsa20_inputbytes() {
    assert!(unsafe { crypto_core_salsa20_inputbytes() as usize } == crypto_core_salsa20_INPUTBYTES)
}

#[test]
fn test_crypto_core_salsa20_keybytes() {
    assert!(unsafe { crypto_core_salsa20_keybytes() as usize } == crypto_core_salsa20_KEYBYTES)
}

#[test]
fn test_crypto_core_salsa20_constbytes() {
    assert!(unsafe { crypto_core_salsa20_constbytes() as usize } == crypto_core_salsa20_CONSTBYTES)
}