11         let padding_length = block.len() - pos - 1;  in pad_block()  localVariable
12         if padding_length > 255 {  in pad_block()
16         set(&mut block[pos..], padding_length as u8);  in pad_block()
22         let padding_length = data.last().copied().unwrap_or(1) as usize;  in unpad()  localVariable
23         if padding_length + 1 > data.len() {  in unpad()
27         let padding_begin = data.len() - padding_length - 1;  in unpad()
31             .any(|&byte| byte as usize != padding_length)  in unpad()
61             for padding_length in 0..(256 - original_length) {  in padding_length_is_amount_of_bytes_excluding_the_padding_length_itself()
62                 let mut block = vec![0; original_length + padding_length + 1];  in padding_length_is_amount_of_bytes_excluding_the_padding_length_itself()
68                     assert_eq!(*byte as usize, padding_length);  in padding_length_is_amount_of_bytes_excluding_the_padding_length_itself()
88         let padding_length = 256;  in padding_length_bigger_than_255_is_a_pad_error()  localVariable
90             let mut block = vec![0; original_length + padding_length + 1];  in padding_length_bigger_than_255_is_a_pad_error()
111         for padding_length in 0..16 {  in one_of_the_padding_bytes_with_value_different_than_padding_length_is_unpadding_error()
112             for invalid_byte in 0..padding_length {  in one_of_the_padding_bytes_with_value_different_than_padding_length_is_unpadding_error()
113                 let mut block = vec![0; padding_length + 1];  in one_of_the_padding_bytes_with_value_different_than_padding_length_is_unpadding_error()
117                 block[invalid_byte] = (padding_length - 1) as u8;  in one_of_the_padding_bytes_with_value_different_than_padding_length_is_unpadding_error()