diff --git a/README.md b/README.md
index 80dddc0..8c7f31e 100644
--- a/README.md
+++ b/README.md
@@ -1,22 +1,20 @@
-# Zlevis
+# zlevis
 
 A minimal fork of [Clevis](https://github.com/latchset/clevis), rewritten in POSIX shell to accommodate automatic decryption of a ZFS root pool with TPM2. 
 
 ## Installation
 
-### Alpine Linux
-
-Work in progress.
-
-### Manual
-
-Zlevis can be manually installed with `meson`, after cloning the repository, setup the build directory
+`zlevis` can be installed with `meson`, after cloning the repository, setup the build directory:
 
 ```
 $ meson setup builddir
 ```
 
-Installation of the zlevis scripts is now performed with
+> Using the `--prefix=/usr` flag will install `zlevis` in `/usr/bin` instead of `/usr/local/bin`. 
+
+> Using the `--reconfigure` flag will reconfigure the build directory.
+
+Installation of the `zlevis` scripts is now performed with:
 
 ```
 # meson install -C builddir
diff --git a/meson.build b/meson.build
index 2c824ab..e8969cc 100644
--- a/meson.build
+++ b/meson.build
@@ -1,11 +1,11 @@
 # Project definition
-project('zlevis', license: 'GPL3', version: '1')
+project('zlevis', license: 'GPL3')
 
 # Define bindir
-bindir=join_paths(get_option('prefix'), get_option('bindir'))
+bindir = join_paths(get_option('prefix'), get_option('bindir'))
 
 # Define bins list
-bins=[]
+bins = []
 
 # Define subdir with bins
 subdir('src')
diff --git a/src/meson.build b/src/meson.build
index 145e509..09c3d2c 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -1,4 +1,14 @@
+# Find scripts
+main = find_program('zlevis')
+encrypt = find_program('zlevis-encrypt')
+decrypt = find_program('zlevis-decrypt')
+
+# Test the scripts
+test('zlevis', main, args: '--summary')
+test('zlevis-encrypt', encrypt, args: '--summary')
+test('zlevis-decrypt', decrypt, args: '--summary')
+
 # Add paths of scripts to bins
+bins += join_paths(meson.current_source_dir(), 'zlevis')
 bins += join_paths(meson.current_source_dir(), 'zlevis-encrypt')
-bins += join_paths(meson.current_source_dir(), 'zlevis-decrypt')
-bins += join_paths(meson.current_source_dir(), 'zlevis-fetch')
+bins += join_paths(meson.current_source_dir(), 'zlevis-decrypt')
\ No newline at end of file
diff --git a/src/zlevis b/src/zlevis
new file mode 100755
index 0000000..34acddc
--- /dev/null
+++ b/src/zlevis
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+# Exit immediately if a command exits with a non-zero status
+set -e
+
+# Summary of the script's functionality
+summary="A tool that enables automatic decryption of ZFS rpools with TPM2"
+
+# Display summary if requested
+if [ "$1" = "--summary" ]; then
+    echo "$summary"
+    exit 0
+fi
+
+# Function to display usage information of zlevis
+info() {
+    exec >&2
+    echo "Usage: \"zlevis {decrypt|encrypt} <pool>\""
+    exit 2
+}
+
+# Function to display usage information of zlevis encrypt pool
+encrypt_pool_info() {
+    exec >&2
+    echo "Usage: \"zlevis encrypt <pool> '{\"property\":\"value\"}' < file.key\""
+    echo
+    echo "This command uses the following configuration properties:"
+    echo "  hash: <string> -> Hash algorithm used in the computation of the object name (default: sha256)."
+    echo "  key: <string> -> Algorithm type for the generated key (default: ecc)."
+    echo "  pcr_bank: <string> -> PCR algorithm bank to use for policy (default: first supported by TPM)."
+    echo "  pcr_ids: <string> -> PCR list used for policy. If not present, no policy is used."
+    echo "  pcr_digest: <string> -> Binary PCR hashes encoded in base64. If not present, the hash values are looked up."
+    exit 2
+}
+
+# Determine the argument path and execute the relevant script or function
+if [ -t 0 ]; then
+    case "$1" in
+        "decrypt") zfs list -Ho tpm:jwe "$2" | zlevis-decrypt;;
+        "encrypt") encrypt_pool_info;;
+        *) info;;
+    esac
+else
+    case "$1" in
+        "encrypt") read -r -d . key || zfs set tpm:jwe=$(printf "%s" "$key" | zlevis-encrypt "$3") "$2";;
+        *) info;;
+    esac
+fi
+
+# Exit with the status of the last command
+exit $?
\ No newline at end of file
diff --git a/src/zlevis-decrypt b/src/zlevis-decrypt
index 1d6ee03..7cac845 100755
--- a/src/zlevis-decrypt
+++ b/src/zlevis-decrypt
@@ -4,7 +4,7 @@
 set -e
 
 # Summary of the script's functionality
-summary="Decrypts a JWE using a TPM2.0 chip."
+summary="Decrypts a JWE using a TPM2.0 chip"
 
 # TPM2.0 owner hierarchy to be used by the Operating System
 auth="o"
@@ -18,98 +18,82 @@ fi
 # Display usage information if input is from a terminal
 if [ -t 0 ]; then
     exec >&2
-    echo
     echo "Usage: \"zlevis-decrypt < file.jwe\""
-    echo "Usage ZFS: \"zfs list -Ho tpm:jwe <pool> | zlevis-decrypt\""
-    echo
-    echo "$summary"
     exit 2
 fi
 
-# Function to clean up temporary files on exit
-on_exit() {
-    if [ ! -d "$tmp" ] || ! rm -rf "$tmp"; then
-        echo "Delete temporary files failed" >&2
-        echo "You need to clean up: $tmp" >&2
-        exit 1
-    fi
-}
-
 # Get the version of tpm2-tools
 tpm2tools_version=$(tpm2_createprimary -v | awk -F'version="' '{print $2}' | awk -F'.' '{print $1}')
 
 # Check if the tpm2-tools version is supported
 if [ -z "$tpm2tools_version" ] || [ "$tpm2tools_version" -lt 4 ] || [ "$tpm2tools_version" -gt 5 ]; then
-    echo "The tpm2 pin requires a tpm2-tools version between 4 and 5"
+    echo "The tpm2 pin requires a tpm2-tools version between 4 and 5" >&2
     exit 1
 fi
 
-# Create a temporary directory for TPM files
-if ! tmp="$(mktemp -d)"; then
-    echo "Creating a temporary dir for TPM files failed" >&2
-    exit 1
-fi
-
-# Set up cleanup on exit
-trap 'on_exit' EXIT
-
 # Read the JWE protected header
 read -r -d . hdr
 
 # Decode the JWE protected header
-if ! jhd="$(jose b64 dec -i- < <(echo "$hdr"))"; then
+if ! jhd="$(printf "%s" "$hdr" | jose b64 dec -i-)"; then
     echo "Error decoding JWE protected header" >&2
     exit 1
 fi
-echo "$jhd" > "$tmp"/jhd
 
 # Validate the JWE pin type
-if [ "$(jose fmt -j- -Og clevis -g pin -u- < "$tmp"/jhd)" != "tpm2" ]; then
+if [ "$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g pin -u-)" != "tpm2" ]; then
     echo "JWE pin mismatch" >&2
     exit 1
 fi
 
 # Extract required parameters from the JWE header
-if ! hash="$(jose fmt -j- -Og clevis -g tpm2 -g hash -Su- < "$tmp"/jhd)"; then
-    echo "JWE missing required 'hash' header parameter!" >&2
+if ! hash="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g hash -Su-)"; then
+    echo "JWE missing required 'hash' header parameter" >&2
     exit 1
 fi
-if ! key="$(jose fmt -j- -Og clevis -g tpm2 -g key -Su- < "$tmp"/jhd)"; then
-    echo "JWE missing required 'key' header parameter!" >&2
+if ! key="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g key -Su-)"; then
+    echo "JWE missing required 'key' header parameter" >&2
     exit 1
 fi
-if ! jwk_pub="$(jose fmt -j- -Og clevis -g tpm2 -g jwk_pub -Su- < "$tmp"/jhd)"; then
-    echo "JWE missing required 'jwk_pub' header parameter!" >&2
+if ! jwk_pub="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g jwk_pub -Su-)"; then
+    echo "JWE missing required 'jwk_pub' header parameter" >&2
     exit 1
 fi
-echo "$jwk_pub" > "$tmp"/jwk_pub
-if ! jwk_priv="$(jose fmt -j- -Og clevis -g tpm2 -g jwk_priv -Su- < "$tmp"/jhd)"; then
-    echo "JWE missing required 'jwk_priv' header parameter!" >&2
+if ! jwk_priv="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g jwk_priv -Su-)"; then
+    echo "JWE missing required 'jwk_priv' header parameter" >&2
     exit 1
 fi
-echo "$jwk_priv" > "$tmp"/jwk_priv
 
 # Handle optional PCR parameters
-pcr_ids="$(jose fmt -j- -Og clevis -g tpm2 -g pcr_ids -Su- < "$tmp"/jhd)" || true
+pcr_ids="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g pcr_ids -Su-)" || true
 pcr_spec=""
 if [ -n "$pcr_ids" ]; then
-    pcr_bank="$(jose fmt -j- -Og clevis -g tpm2 -g pcr_bank -Su- < "$tmp"/jhd)"
+    pcr_bank="$(printf "%s" "$jhd" | jose fmt -j- -Og zlevis -g tpm2 -g pcr_bank -Su-)"
     pcr_spec="$pcr_bank:$pcr_ids"
 fi
 
+# Define and trap tmp jwk_pub and jwk_priv
+tmp_jwk_pub="/tmp/jwk_pub.$$"
+tmp_jwk_priv="/tmp/jwk_priv.$$"
+trap 'rm -f "$tmp_jwk_pub" "$tmp_jwk_priv"' EXIT
+
 # Decode the public and private keys from Base64
-if ! jose b64 dec -i- -O "$tmp"/jwk.pub < "$tmp"/jwk_pub; then
+if ! printf "%s" "$jwk_pub" | jose b64 dec -i- -O "$tmp_jwk_pub"; then
     echo "Decoding jwk.pub from Base64 failed" >&2
     exit 1
 fi
-if ! jose b64 dec -i- -O "$tmp"/jwk.priv < "$tmp"/jwk_priv; then
+if ! printf "%s" "$jwk_priv" | jose b64 dec -i- -O "$tmp_jwk_priv"; then
     echo "Decoding jwk.priv from Base64 failed" >&2
     exit 1
 fi
 
+# Define and trap primary_context
+tmp_primary_context="/tmp/primary_context.$$"
+trap 'rm -f "$tmp_jwk_pub" "$tmp_jwk_priv" "$tmp_primary_context"' EXIT
+
 # Create the primary key in the TPM
 case "$tpm2tools_version" in
-    4|5) tpm2_createprimary -Q -C "$auth" -g "$hash" -G "$key" -c "$tmp"/primary.context || fail=$?;;
+    4|5) tpm2_createprimary -Q -C "$auth" -g "$hash" -G "$key" -c "$tmp_primary_context" || fail=$?;;
     *) fail=1;;
 esac
 if [ -n "$fail" ]; then
@@ -118,9 +102,13 @@ if [ -n "$fail" ]; then
 fi
 tpm2_flushcontext -t
 
+# Define and trap load_context
+tmp_load_context="/tmp/load_context.$$"
+trap 'rm -f "$tmp_jwk_pub" "$tmp_jwk_priv" "$tmp_primary_context" "$tmp_load_context"' EXIT
+
 # Load the JWK into the TPM
 case "$tpm2tools_version" in
-    4|5) tpm2_load -Q -C "$tmp"/primary.context -u "$tmp"/jwk.pub -r "$tmp"/jwk.priv -c "$tmp"/load.context || fail=$?;;
+    4|5) tpm2_load -Q -C "$tmp_primary_context" -u "$tmp_jwk_pub" -r "$tmp_jwk_priv" -c "$tmp_load_context" || fail=$?;;
     *) fail=1;;
 esac
 if [ -n "$fail" ]; then
@@ -129,9 +117,12 @@ if [ -n "$fail" ]; then
 fi
 tpm2_flushcontext -t
 
+# Remove tmp_jwk_pub, tmp_jwk_priv and tmp_primary_context
+rm -f "$tmp_jwk_pub" "$tmp_jwk_priv" "$tmp_primary_context"
+
 # Unseal the JWK from the TPM
 case "$tpm2tools_version" in
-    4|5) jwk="$(tpm2_unseal -c "$tmp/load.context" ${pcr_spec:+-p pcr:$pcr_spec})" || fail=$?;;
+    4|5) jwk="$(tpm2_unseal -c "$tmp_load_context" ${pcr_spec:+-p pcr:$pcr_spec} 2>/dev/null)" || fail=$?;;
     *) fail=1;;
 esac
 if [ -n "$fail" ]; then
@@ -140,8 +131,11 @@ if [ -n "$fail" ]; then
 fi
 tpm2_flushcontext -t
 
+# Remove tmp_load_context
+rm -f "$tmp_load_context"
+
 # Output the decrypted JWK along with the original header
 (echo "$jwk$hdr."; /bin/cat) | jose jwe dec -k- -i-
 
 # Exit with the status of the last command
-exit $?
\ No newline at end of file
+exit $?
diff --git a/src/zlevis-encrypt b/src/zlevis-encrypt
index a171674..6700bbe 100755
--- a/src/zlevis-encrypt
+++ b/src/zlevis-encrypt
@@ -4,7 +4,7 @@
 set -e
 
 # Summary of the script's functionality
-summary="Encrypts using a TPM2.0 chip binding policy."
+summary="Encrypts using a TPM2.0 chip binding policy"
 
 # TPM2.0 owner hierarchy to be used by the Operating System
 auth="o"
@@ -21,14 +21,8 @@ fi
 # Display usage information if input is from a terminal
 if [ -t 0 ]; then
     exec >&2
-    echo
     echo "Usage: \"zlevis-encrypt '{\"property\":\"value\"}' < file.key > file.jwe\""
     echo
-    echo "Usage ZFS: \"zfs set tpm:jwe=\$(zlevis-encrypt '{\"property\":\"value\"}' < tank.key) <pool>\""
-    echo
-    echo
-    echo "$summary"
-    echo
     echo "This command uses the following configuration properties:"
     echo "  hash: <string> -> Hash algorithm used in the computation of the object name (default: sha256)."
     echo "  key: <string> -> Algorithm type for the generated key (default: ecc)."
@@ -61,48 +55,27 @@ validate_pcrs() {
     return 0
 }
 
-# Function to clean up temporary files on exit
-on_exit() {
-    if [ ! -d "$tmp" ] || ! rm -rf "$tmp"; then
-        echo "Delete temporary files failed" >&2
-        echo "You need to clean up: $tmp" >&2
-        exit 1
-    fi
-}
-
 # Get the version of tpm2-tools
 tpm2tools_version=$(tpm2_createprimary -v | awk -F'version="' '{print $2}' | awk -F'.' '{print $1}')
 
 # Check if the tpm2-tools version is supported
 if [ -z "$tpm2tools_version" ] || [ "$tpm2tools_version" -lt 4 ] || [ "$tpm2tools_version" -gt 5 ]; then
-    echo "The tpm2 pin requires a tpm2-tools version between 4 and 5"
+    echo "The tpm2 pin requires a tpm2-tools version between 4 and 5" >&2
     exit 1
 fi
 
-# Create a temporary directory for TPM files
-if ! tmp="$(mktemp -d)"; then
-    echo "Creating a temporary dir for TPM files failed" >&2
-    exit 1
-fi
-
-# Set up cleanup on exit
-trap 'on_exit' EXIT
-
 # Validate the configuration input
 if ! cfg="$(jose fmt -j "$1" -Oo- 2>/dev/null)"; then
-    echo "Configuration is malformed" >&2
+    echo "Configuration '{\"property\":\"value\"}' is not present or malformed" >&2
     exit 1
 fi
 
-# Store the configuration in a temporary file
-echo "$cfg" > "$tmp"/cfg
-
 # Extract hash and key from the configuration, defaulting if not present
-hash="$(jose fmt -j- -Og hash -u- < "$tmp"/cfg)" || hash="sha256"
-key="$(jose fmt -j- -Og key -u- < "$tmp"/cfg)" || key="ecc"
+hash="$(printf "%s" "$cfg" | jose fmt -j- -Og hash -u-)" || hash="sha256"
+key="$(printf "%s" "$cfg" | jose fmt -j- -Og key -u-)" || key="ecc"
 
 # Determine the PCR bank to use for policy
-pcr_bank="$(jose fmt -j- -Og pcr_bank -u- < "$tmp"/cfg)" || {
+pcr_bank="$(printf "%s" "$cfg" | jose fmt -j- -Og pcr_bank -u-)" || {
     # If not specified, find a non-empty PCR algorithm bank
     if ! pcr_bank=$(tpm2_getcap pcrs | awk '/^[[:space:]]*-[[:space:]]*([^:]+):[[:space:]]*\[[[:space:]]*[^][:space:]]/ {found=1; split($0, m, /[-:[:space:]]+/); print m[2]; exit} END {exit !found}'); then
         echo "Unable to find non-empty PCR algorithm bank, please check output of tpm2_getcap pcrs" >&2
@@ -111,15 +84,14 @@ pcr_bank="$(jose fmt -j- -Og pcr_bank -u- < "$tmp"/cfg)" || {
 }
 
 # Trim spaces from the configuration for parsing PCR IDs
-pcr_cfg=$(tr -d '[:space:]' < "$tmp"/cfg)
-echo "$pcr_cfg" > "$tmp"/pcr_cfg
+pcr_cfg=$(printf "%s" "$cfg" | tr -d '[:space:]')
 
 # Handle both string and JSON array formats for pcr_ids
-if jose fmt -j- -Og pcr_ids 2>/dev/null < "$tmp"/pcr_cfg && ! pcr_ids="$(jose fmt -j- -Og pcr_ids -u- 2>/dev/null < "$tmp"/pcr_cfg)"; then
+if printf "%s" "$pcr_cfg" | jose fmt -j- -Og pcr_ids 2>/dev/null && ! pcr_ids="$(printf "%s" "$pcr_cfg" | jose fmt -j- -Og pcr_ids -u- 2>/dev/null)"; then
     # Attempt to parse as a JSON array if string parsing fails
-    if jose fmt -j- -Og pcr_ids -A 2>/dev/null < "$tmp"/pcr_cfg; then
+    if printf "%s" "$pcr_cfg" | jose fmt -j- -Og pcr_ids -A 2>/dev/null; then
         # Construct a comma-separated string from the array
-        for pcr in $(jose fmt -j- -Og pcr_ids -Af- < "$tmp"/pcr_cfg | tr -d '"'); do
+        for pcr in $(printf "%s" "$pcr_cfg" | jose fmt -j- -Og pcr_ids -Af- | tr -d '"'); do
             pcr_ids=$(printf '%s,%s' "${pcr_ids}" "${pcr}")
         done
         # Remove leading comma
@@ -137,19 +109,21 @@ if ! validate_pcrs "${tpm2tools_version}" "${pcr_bank}" "${pcr_ids}"; then
 fi
 
 # Get the PCR digest from the configuration or read it if not provided
-pcr_digest="$(jose fmt -j- -Og pcr_digest -u- < "$tmp"/cfg)" || true
-echo "$pcr_digest" > "$tmp"/pcr_digest
+pcr_digest="$(printf "%s" "$cfg" | jose fmt -j- -Og pcr_digest -u-)" || true
 
 # Generate a JSON Web Key (JWK)
 if ! jwk="$(jose jwk gen -i '{"alg":"A256GCM"}')"; then
     echo "Generating a jwk failed" >&2
     exit 1
 fi
-echo "$jwk" > "$tmp"/jwk
+
+# Define and trap primary_context
+tmp_primary_context="/tmp/primary_context.$$"
+trap 'rm -f "$tmp_primary_context"' EXIT
 
 # Create the primary key in the TPM
 case "$tpm2tools_version" in
-    4|5) tpm2_createprimary -Q -C "$auth" -g "$hash" -G "$key" -c "$tmp"/primary.context || fail=$?;;
+    4|5) tpm2_createprimary -Q -C "$auth" -g "$hash" -G "$key" -c "$tmp_primary_context" || fail=$?;;
     *) fail=1;;
 esac
 if [ -n "$fail" ]; then
@@ -158,12 +132,17 @@ if [ -n "$fail" ]; then
 fi
 tpm2_flushcontext -t
 
+# Define and trap pcr_digest and pcr_policy
+tmp_pcr_digest="/tmp/pcr_digest.$$"
+tmp_pcr_policy="/tmp/pcr_policy.$$"
+trap 'rm -f "$tmp_primary_context" "$tmp_pcr_digest" "$tmp_pcr_policy"' EXIT
+
 # Handle PCRs and policy creation if PCR IDs are provided
 policy_options=""
 if [ -n "$pcr_ids" ]; then
     if [ -z "$pcr_digest" ]; then
         case "$tpm2tools_version" in
-            4|5) tpm2_pcrread -Q "$pcr_bank":"$pcr_ids" -o "$tmp"/pcr.digest || fail=$?;;
+            4|5) tpm2_pcrread -Q "$pcr_bank":"$pcr_ids" -o "$tmp_pcr_digest" || fail=$?;;
             *) fail=1;;
         esac
         if [ -n "$fail" ]; then
@@ -172,7 +151,7 @@ if [ -n "$pcr_ids" ]; then
         fi
         tpm2_flushcontext -t
     else
-        if ! jose b64 dec -i- -O "$tmp"/pcr.digest < "$tmp"/pcr_digest; then
+        if ! printf "%s" "$pcr_digest" | jose b64 dec -i- -O "$tmp_pcr_digest"; then
             echo "Error decoding PCR digest" >&2
             exit 1
         fi
@@ -180,7 +159,7 @@ if [ -n "$pcr_ids" ]; then
 
     # Create the policy based on PCRs
     case "$tpm2tools_version" in
-        4|5) tpm2_createpolicy -Q -g "$hash" --policy-pcr -l "$pcr_bank":"$pcr_ids" -f "$tmp"/pcr.digest -L "$tmp"/pcr.policy || fail=$?;;
+        4|5) tpm2_createpolicy -Q -g "$hash" --policy-pcr -l "$pcr_bank":"$pcr_ids" -f "$tmp_pcr_digest" -L "$tmp_pcr_policy" || fail=$?;;
         *) fail=1;;
     esac
     if [ -n "$fail" ]; then
@@ -191,15 +170,23 @@ if [ -n "$pcr_ids" ]; then
     tpm2_flushcontext -l
 
     # Set the policy options to the created policy file
-    policy_options="$tmp/pcr.policy"
+    policy_options="$tmp_pcr_policy"
 else
     # If no PCR IDs are provided, add user authentication to the object attributes
     obj_attr="$obj_attr|userwithauth"
 fi
 
+# Remove tmp_pcr_digest
+rm -f "$tmp_pcr_digest"
+
+# Define and trap tmp jwk_pub and jwk_priv
+tmp_jwk_pub="/tmp/jwk_pub.$$"
+tmp_jwk_priv="/tmp/jwk_priv.$$"
+trap 'rm -f "$tmp_primary_context" "$tmp_pcr_policy" "$tmp_jwk_pub" "$tmp_jwk_priv"' EXIT
+
 # Create the TPM2 object for the JWK
 case "$tpm2tools_version" in
-    4|5) tpm2_create -Q -g "$hash" -C "$tmp"/primary.context -u "$tmp"/jwk.pub -r "$tmp"/jwk.priv -a "$obj_attr" -L "$policy_options" -i- < "$tmp"/jwk || fail=$?;;
+	4|5) printf "%s" "$jwk" | tpm2_create -Q -g "$hash" -C "$tmp_primary_context" -u "$tmp_jwk_pub" -r "$tmp_jwk_priv" -a "$obj_attr" -L "$policy_options" -i- || fail=$?;;
     *) fail=1;;
 esac
 if [ -n "$fail" ]; then
@@ -208,33 +195,39 @@ if [ -n "$fail" ]; then
 fi
 tpm2_flushcontext -t
 
+# Remove tmp_primary_context and tmp_pcr_policy
+rm -f "$tmp_primary_context" "$tmp_pcr_policy"
+
 # Encode the JWK public and private keys in Base64
-if ! jwk_pub="$(jose b64 enc -I "$tmp"/jwk.pub)"; then
+if ! jwk_pub="$(jose b64 enc -I "$tmp_jwk_pub")"; then
     echo "Encoding jwk.pub in Base64 failed" >&2
     exit 1
 fi
-if ! jwk_priv="$(jose b64 enc -I "$tmp"/jwk.priv)"; then
+if ! jwk_priv="$(jose b64 enc -I "$tmp_jwk_priv")"; then
     echo "Encoding jwk.priv in Base64 failed" >&2
     exit 1
 fi
 
+# Remove tmp_jwk_pub and tmp_jwk_priv
+rm -f "$tmp_jwk_pub" "$tmp_jwk_priv"
+
 # Construct the JWE (JSON Web Encryption) structure
-jwe='{"protected":{"clevis":{"pin":"tpm2","tpm2":{}}}}'
-jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$hash" -s hash -UUUUo-)"
-jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$key" -s key -UUUUo-)"
+jwe='{"protected":{"zlevis":{"pin":"tpm2","tpm2":{}}}}'
+jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$hash" -s hash -UUUUo-)"
+jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$key" -s key -UUUUo-)"
 
 # Include PCR bank and IDs in the JWE if they are provided
 if [ -n "$pcr_ids" ]; then
-    jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$pcr_bank" -s pcr_bank -UUUUo-)"
-    jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$pcr_ids" -s pcr_ids -UUUUo-)"
+    jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$pcr_bank" -s pcr_bank -UUUUo-)"
+    jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$pcr_ids" -s pcr_ids -UUUUo-)"
 fi
 
 # Add the Base64 encoded JWK public and private keys to the JWE
-jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$jwk_pub" -s jwk_pub -UUUUo-)"
-jwe="$(jose fmt -j "$jwe" -g protected -g clevis -g tpm2 -q "$jwk_priv" -s jwk_priv -UUUUo-)"
-
-# Clean up the temporary directory at the end of the script
-[ -d "${tmp}" ] && rm -rf "${tmp}"
+jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$jwk_pub" -s jwk_pub -UUUUo-)"
+jwe="$(jose fmt -j "$jwe" -g protected -g zlevis -g tpm2 -q "$jwk_priv" -s jwk_priv -UUUUo-)"
 
 # Output the final JWE
-exec jose jwe enc -i- -k- -I- -c < <(echo -n "$jwe$jwk"; /bin/cat)
\ No newline at end of file
+(echo "$jwe$jwk$(/bin/cat)") | jose jwe enc -i- -k- -I- -c
+
+# Exit with the status of the last command
+exit $?
diff --git a/src/zlevis-fetch b/src/zlevis-fetch
deleted file mode 100755
index fa8e2b6..0000000
--- a/src/zlevis-fetch
+++ /dev/null
@@ -1,25 +0,0 @@
-#!/bin/sh
-
-# Exit immediately if a command exits with a non-zero status
-set -e
-
-# Check if zlevis-decrypt is present
-command -v zlevis-decrypt > /dev/null || exit 1
-
-# Read ZFS dataset information.
-zfs list -Ho name,encryption,keystatus,encryptionroot,tpm:jwe | while IFS=$'\t' read -r ds enc keystatus encroot jwe; do
-	# Check if the dataset is the encryption root.
-    if [ "$ds" = "$encroot" ] && [ "$enc" != "off" ] && [ "$jwe" != "-" ]; then
-        if [ "$keystatus" = "available" ]; then
-            echo "Pool $ds already unlocked"
-        else
-            echo "Loading key for $ds"
-            if echo -n "$jwe" | zlevis-decrypt | zfs load-key -L prompt "$ds"; then
-                echo "Unlocked $ds"
-            else
-                echo "FAILED TO UNLOCK $ds" >&2
-				exit 1
-            fi
-        fi
-    fi
-done
\ No newline at end of file