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diff --git a/Cargo.toml b/Cargo.toml
index 2879954..70e89ac 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,3 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+ldap3="0.11.1"
+base64 = "0.21"
+rust-crypto = "^0.2"
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..a9aacfa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,72 @@
-fn main() {
-    println!("Hello, world!");
+use std::collections::HashSet;
+use ldap3::result::Result;
+use ldap3::{LdapConn, Scope, SearchEntry, Mod};
+
+use base64::{Engine as _, engine::general_purpose};
+use crypto::{sha2::Sha512, digest::Digest};
+
+//https://stackoverflow.com/a/44532957
+pub fn hex_to_base64(hex: &str) -> String {
+    // Make vector of bytes from octets
+    let mut bytes = Vec::new();
+    for i in 0..(hex.len()/2) {
+        let res = u8::from_str_radix(&hex[2*i .. 2*i+2], 16);
+        match res {
+            Ok(v) => bytes.push(v),
+            Err(e) => println!("Problem with hex: {}", e),
+        };
+    };
+
+    general_purpose::STANDARD.encode(&bytes) // now convert from Vec<u8> to b64-encoded String
+}
+
+
+fn main() -> Result<()> {
+    let mut ldap = LdapConn::new("ldaps://sso.skynet.ie")?;
+    
+    let user = "silver";
+    let pass = "";
+    let field = "sshPublicKey";
+    let value = "em232323232323";
+    
+    let dn = format!("uid={},ou=users,dc=skynet,dc=ie", user);
+    ldap.simple_bind(&dn, pass)?.success()?;
+
+    // always assume insecure
+    let mut secure = false;
+    
+    // get the users current password hash
+    let (rs, _res) = ldap.search(&dn,Scope::Base,"(objectClass=*)",vec!["userPassword"])?.success()?;
+    if !rs.is_empty() {
+        let tmp = SearchEntry::construct(rs[0].clone());
+        if !tmp.attrs["userPassword"].is_empty() && tmp.attrs["userPassword"][0].starts_with("{SHA512}") {
+            secure = true;
+        }
+    }
+    let mut mods = vec![
+        Mod::Replace(field,  HashSet::from([value]))
+    ];
+
+    let mut pw_hashset = HashSet::new();
+    let pass_tmp;
+    if !secure {
+        let mut hasher = Sha512::new();
+
+        hasher.input_str(pass);
+
+        // get it as hex string
+        let hex = hasher.result_str();
+        
+        // convert it to b64
+        pass_tmp = format!("{{SHA512}}{}", hex_to_base64(&hex));
+
+        pw_hashset.insert(pass_tmp.as_str());
+        mods.push(Mod::Replace("userPassword",  pw_hashset));
+    };
+
+    let res = ldap.modify(&dn, mods)?.success()?;
+    
+    println!("{:?}", res);
+    
+    Ok(ldap.unbind()?)
 }