diff --git a/rust/src/nasl/builtin/cryptographic/hash.rs b/rust/src/nasl/builtin/cryptographic/hash.rs
index 5289e0033..5be8a996a 100644
--- a/rust/src/nasl/builtin/cryptographic/hash.rs
+++ b/rust/src/nasl/builtin/cryptographic/hash.rs
@@ -2,8 +2,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later WITH x11vnc-openssl-exception
 
-use crate::function_set;
-use crate::nasl::utils::error::FunctionErrorKind;
 use digest::Digest;
 use md2::Md2;
 use md4::Md4;
@@ -12,63 +10,63 @@ use ripemd::Ripemd160;
 use sha1::Sha1;
 use sha2::{Sha256, Sha512};
 
-use crate::nasl::syntax::NaslValue;
-use crate::nasl::utils::{Context, Register};
+use crate::nasl::prelude::*;
+use crate::nasl::utils::function::StringOrData;
 
-fn nasl_hash<D: Digest>(register: &Register) -> Result<NaslValue, FunctionErrorKind>
+fn nasl_hash<D: Digest>(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind>
 where
     D::OutputSize: std::ops::Add,
     <D::OutputSize as std::ops::Add>::Output: digest::generic_array::ArrayLength<u8>,
 {
-    let positional = register.positional();
-    if positional.is_empty() {
-        return Ok(NaslValue::Null);
-    };
-    let data = match &positional[0] {
-        NaslValue::String(x) => x.as_bytes(),
-        NaslValue::Data(x) => x,
-        NaslValue::Null => return Ok(NaslValue::Null),
-        x => return Err(("data", "string", x).into()),
-    };
-
-    let mut hash = D::new();
-    hash.update(data);
-    Ok(NaslValue::Data(hash.finalize().as_slice().to_vec()))
+    if let Some(data) = data {
+        let mut hash = D::new();
+        hash.update(data.0.as_bytes());
+        Ok(NaslValue::Data(hash.finalize().as_slice().to_vec()))
+    } else {
+        Ok(NaslValue::Null)
+    }
 }
 
 /// NASL function to get MD2 hash
-pub fn hash_md2(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Md2>(register)
+#[nasl_function]
+pub fn hash_md2(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Md2>(data)
 }
 
 /// NASL function to get MD4 hash
-pub fn hash_md4(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Md4>(register)
+#[nasl_function]
+pub fn hash_md4(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Md4>(data)
 }
 
 /// NASL function to get MD5 hash
-pub fn hash_md5(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Md5>(register)
+#[nasl_function]
+pub fn hash_md5(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Md5>(data)
 }
 
 /// NASL function to get SHA1 hash
-pub fn hash_sha1(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Sha1>(register)
+#[nasl_function]
+pub fn hash_sha1(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Sha1>(data)
 }
 
 /// NASL function to get SHA256 hash
-pub fn hash_sha256(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Sha256>(register)
+#[nasl_function]
+pub fn hash_sha256(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Sha256>(data)
 }
 
 /// NASL function to get SHA512 hash
-pub fn hash_sha512(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Sha512>(register)
+#[nasl_function]
+pub fn hash_sha512(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Sha512>(data)
 }
 
 /// NASL function to get RIPemd160 hash
-pub fn hash_ripemd160(register: &Register, _: &Context) -> Result<NaslValue, FunctionErrorKind> {
-    nasl_hash::<Ripemd160>(register)
+#[nasl_function]
+pub fn hash_ripemd160(data: Option<StringOrData>) -> Result<NaslValue, FunctionErrorKind> {
+    nasl_hash::<Ripemd160>(data)
 }
 
 pub struct Hash;
diff --git a/rust/src/nasl/utils/error.rs b/rust/src/nasl/utils/error.rs
index d699ff002..13b4dce8d 100644
--- a/rust/src/nasl/utils/error.rs
+++ b/rust/src/nasl/utils/error.rs
@@ -128,20 +128,3 @@ impl FunctionErrorKind {
         Self::Argument(ArgumentError::MissingNamed(vec![val.to_string()]))
     }
 }
-
-impl From<(&str, &str, &NaslValue)> for FunctionErrorKind {
-    fn from(value: (&str, &str, &NaslValue)) -> Self {
-        let (key, expected, got) = value;
-        let got: &str = &got.to_string();
-        ArgumentError::wrong_argument(key, expected, got).into()
-    }
-}
-
-impl From<(&str, &str, Option<&NaslValue>)> for FunctionErrorKind {
-    fn from(value: (&str, &str, Option<&NaslValue>)) -> Self {
-        match value {
-            (key, expected, Some(x)) => (key, expected, x).into(),
-            (key, expected, None) => ArgumentError::wrong_argument(key, expected, "NULL").into(),
-        }
-    }
-}