Type Definition esp_idf_bindgen::esp_hmac_sha1_t

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 over data buffer (RFC 2104)

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