Function wrap_scr

bitvm/src/chunk/wrap_hasher.rs:21–29

truncate 32 byte output hash to {BLAKE3_HASH_LENGTH} hash output and pad with zeros

(scr: Script)

/// truncate 32 byte output hash to {BLAKE3_HASH_LENGTH} hash output and pad with zeros
fn wrap_scr(scr: Script) -> Script {
    script! {
        { scr }
        for _ in 0..(32*2-BLAKE3_HASH_LENGTH*2)/2 { OP_2DROP }
        for _ in 0..BLAKE3_HASH_LENGTH*2 { OP_TOALTSTACK }
        for _ in 0..(32*2-BLAKE3_HASH_LENGTH*2) { 0 }
        for _ in 0..BLAKE3_HASH_LENGTH*2 { OP_FROMALTSTACK  }
    }
}

// create Script instance from stack-tracker and pad output with zeros to appropriate hash size
pub(crate) fn hash_n_bytes<const N: usize>() -> Script {