diff --git a/src/tea1.rs b/src/tea1.rs
index d30fb1e..613168d 100644
--- a/src/tea1.rs
+++ b/src/tea1.rs
@@ -27,6 +27,7 @@ pub const TEA1_SBOX: [u8; 256] = [
     0x99, 0x43, 0x13, 0x0B, 0xE0, 0xA5, 0x12, 0x77, 0x5D, 0xB3, 0x38, 0xD9, 0xEF, 0x5A, 0x01, 0x70,
 ];
 
+#[inline(always)]
 pub fn expand_iv(short_iv: u32) -> u64 {
     let xorred = short_iv ^ 0x9672_4FA1;
     let xorred = xorred.rotate_left(8);
@@ -34,6 +35,7 @@ pub fn expand_iv(short_iv: u32) -> u64 {
     iv.rotate_right(8)
 }
 
+#[inline(always)]
 pub fn state_word_to_newbyte(wst: u16, lut: &[u16; 8]) -> u8 {
     let mut st0 = (wst & 0x00FF) as u8;
     let mut st1 = (wst >> 8) as u8;
@@ -53,6 +55,7 @@ pub fn state_word_to_newbyte(wst: u16, lut: &[u16; 8]) -> u8 {
     out
 }
 
+#[inline(always)]
 pub fn reorder_state_byte(b: u8) -> u8 {
     let mut out = 0u8;
     out |= (b.wrapping_shl(6)) & 0x40;
@@ -65,6 +68,7 @@ pub fn reorder_state_byte(b: u8) -> u8 {
     out
 }
 
+#[inline(always)]
 pub fn init_key_register(key: &[u8; 10]) -> u32 {
     let mut reg: u32 = 0;
 
@@ -82,6 +86,7 @@ pub fn tea1_keystream(frame_number: u32, key: &[u8; 10], num_bytes: usize) -> Ve
     out
 }
 
+#[inline(always)]
 pub fn tea1_into(frame_number: u32, key: &[u8; 10], out: &mut [u8]) {
     let mut iv_reg = expand_iv(frame_number);
     let mut key_reg = init_key_register(key);
diff --git a/src/tea1_attack.rs b/src/tea1_attack.rs
index d3f3f86..bd60c22 100644
--- a/src/tea1_attack.rs
+++ b/src/tea1_attack.rs
@@ -1,12 +1,12 @@
 // tea1_attack.rs
 // Implementation of the Midnight Blue Labs TEA1 attack (CVE-2022-24402)
 use crate::tea1::*;
-use rayon::prelude::*;
 use rand::Rng;
+use rayon::prelude::*;
 
 /// Returns true if the candidate key_reg produces the exact known keystream prefix
 /// Early aborts on the first mismatch
-#[inline]
+#[inline(always)]
 pub fn keyreg_matches_prefix(frame_number: u32, mut key_reg: u32, known_prefix: &[u8]) -> bool {
     if known_prefix.is_empty() {
         return true;
@@ -54,8 +54,6 @@ pub fn recover_tea1_keyreg(frame_number: u32, known_keystream: &[u8]) -> Option<
     let known_prefix = &known_keystream[0..check_len];
 
     (0u32..=u32::MAX).into_par_iter().find_any({
-        let frame_number = frame_number;
-
         move |&candidate| keyreg_matches_prefix(frame_number, candidate, known_prefix)
     })
 }