Type Alias esp_idf_sys::esp_hmac_sha1_t

pub type esp_hmac_sha1_t = Option<unsafe extern "C" fn(key: *const c_uchar, key_len: c_uint, data: *const c_uchar, data_len: c_uint, mac: *mut c_uchar) -> c_int>;

@brief HMAC-SHA1 callback function over data buffer (RFC 2104)

@param key Key for HMAC operations @param key_len Length of the key in bytes @param data Pointers to the data area @param data_len Length of the data area @param mac Buffer for the hash (20 bytes) Returns: 0 on success, -1 of failure

Aliased Type

enum esp_hmac_sha1_t {
    None,
    Some(unsafe extern "C" fn(_: *const u8, _: u32, _: *const u8, _: u32, _: *mut u8) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *const u8, _: u32, _: *const u8, _: u32, _: *mut u8) -> i32)

Some value of type T.