diff --git a/native/native_rust_library/Cargo.lock b/native/native_rust_library/Cargo.lock
index 029941c25..3732a621d 100644
--- a/native/native_rust_library/Cargo.lock
+++ b/native/native_rust_library/Cargo.lock
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 name = "winapi-util"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
 dependencies = [
  "winapi",
 ]
 
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "windows-sys"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
 dependencies = [
  "windows_aarch64_msvc",
  "windows_i686_gnu",
  "windows_i686_msvc",
  "windows_x86_64_gnu",
  "windows_x86_64_msvc",
 ]
 
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
 
 [[package]]
 name = "windows_i686_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
 
 [[package]]
 name = "windows_i686_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
 
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
 
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.36.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
 
 [[package]]
 name = "zeroize"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4756f7db3f7b5574938c3eb1c117038b8e07f95ee6718c0efad4ac21508f1efd"
 dependencies = [
  "zeroize_derive",
 ]
 
 [[package]]
 name = "zeroize_derive"
 version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f8f187641dad4f680d25c4bfc4225b418165984179f26ca76ec4fb6441d3a17"
 dependencies = [
  "proc-macro2",
  "quote",
  "syn",
  "synstructure",
 ]
diff --git a/native/native_rust_library/Cargo.toml b/native/native_rust_library/Cargo.toml
index 843d42232..f77d18400 100644
--- a/native/native_rust_library/Cargo.toml
+++ b/native/native_rust_library/Cargo.toml
@@ -1,29 +1,30 @@
 [package]
 name = "native_rust_library"
 version = "0.1.0"
 edition = "2021"
 license = "BSD-3-Clause"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 cxx = "1.0"
 tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }
 tokio-stream = "0.1"
 tonic = "0.8"
 prost = "0.11"
 lazy_static = "1.4"
 rand = "0.8"
 opaque-ke = "1.2"
 tracing = "0.1"
 argon2 = "0.4"
 digest = "0.9"
 curve25519-dalek = "3.2"
 sha2 = "0.9"
+regex = "1.6"
 
 [build-dependencies]
 cxx-build = "1.0"
 tonic-build = "0.8"
 
 [lib]
 crate-type = ["staticlib"]
diff --git a/native/native_rust_library/src/crypto_tools.rs b/native/native_rust_library/src/crypto_tools.rs
new file mode 100644
index 000000000..d6e5f7a19
--- /dev/null
+++ b/native/native_rust_library/src/crypto_tools.rs
@@ -0,0 +1,82 @@
+use crate::ffi::DeviceType;
+use rand::distributions::{Alphanumeric, DistString};
+#[cfg(test)]
+use regex::Regex;
+
+// DEVICE_ID_CHAR_LENGTH has to be kept in sync with deviceIDCharLength
+// which is defined in web/utils/device-id.js
+// and with DEVICE_CHAR_LENGTH
+// defined in services/tunnelbroker/src/Constants.h
+const DEVICE_ID_CHAR_LENGTH: usize = 64;
+// DEVICE_ID_FORMAT_REGEX has to be kept in sync with deviceIDFormatRegex
+// which is defined in web/utils/device-id.js
+// and with DEVICEID_FORMAT_REGEX
+// defined in services/tunnelbroker/src/Constants.h
+#[cfg(test)]
+const DEVICE_ID_FORMAT_REGEX: &str = "^(ks|mobile|web):[a-zA-Z0-9]{64}$";
+
+// generate_device_id has to be kept in sync with generateDeviceID
+// which is defined in web/utils/device-id.js
+pub fn generate_device_id(device_type: DeviceType) -> Result<String, String> {
+  let prefix = match device_type {
+    DeviceType::KEYSERVER => "ks",
+    DeviceType::WEB => "web",
+    DeviceType::MOBILE => "mobile",
+    _ => {
+      return Err(String::from("Incorrect device type provieded"));
+    }
+  };
+  let mut rng = rand::thread_rng();
+  let suffix: String =
+    Alphanumeric.sample_string(&mut rng, DEVICE_ID_CHAR_LENGTH);
+
+  Ok(format!("{}:{}", &prefix, &suffix))
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+
+  fn check_regex(s: &String) -> bool {
+    Regex::new(&DEVICE_ID_FORMAT_REGEX).unwrap().is_match(&s)
+  }
+
+  #[test]
+  fn generate_device_id_ks() {
+    for _x in 1..100 {
+      let result = generate_device_id(DeviceType::KEYSERVER).unwrap();
+      assert!(
+        check_regex(&result),
+        "result: {} does not match regex {}",
+        &result,
+        &DEVICE_ID_FORMAT_REGEX
+      );
+    }
+  }
+
+  #[test]
+  fn generate_device_id_web() {
+    for _x in 1..100 {
+      let result = generate_device_id(DeviceType::WEB).unwrap();
+      assert!(
+        check_regex(&result),
+        "result: {} does not match regex {}",
+        &result,
+        &DEVICE_ID_FORMAT_REGEX
+      );
+    }
+  }
+
+  #[test]
+  fn generate_device_id_mobile() {
+    for _x in 1..100 {
+      let result = generate_device_id(DeviceType::MOBILE).unwrap();
+      assert!(
+        check_regex(&result),
+        "result: {} does not match regex {}",
+        &result,
+        &DEVICE_ID_FORMAT_REGEX
+      );
+    }
+  }
+}
diff --git a/native/native_rust_library/src/lib.rs b/native/native_rust_library/src/lib.rs
index 1c6d28ede..ad6b0369d 100644
--- a/native/native_rust_library/src/lib.rs
+++ b/native/native_rust_library/src/lib.rs
@@ -1,159 +1,171 @@
 use lazy_static::lazy_static;
 use std::sync::Arc;
 use tokio::runtime::{Builder, Runtime};
 use tonic::{transport::Channel, Status};
 use tracing::instrument;
 
+mod crypto_tools;
 mod identity_client;
 mod opaque;
 mod identity {
   tonic::include_proto!("identity");
 }
 
+use crypto_tools::generate_device_id;
 use identity::identity_service_client::IdentityServiceClient;
 use identity_client::{
   get_user_id, login_user_pake, login_user_wallet, register_user,
   verify_user_token,
 };
 
 const IDENTITY_SERVICE_SOCKET_ADDR: &str = "https://[::1]:50051";
 
 lazy_static! {
   pub static ref RUNTIME: Arc<Runtime> = Arc::new(
     Builder::new_multi_thread()
       .worker_threads(1)
       .max_blocking_threads(1)
       .enable_all()
       .build()
       .unwrap()
   );
 }
 
 #[cxx::bridge]
 mod ffi {
+
+  enum DeviceType {
+    KEYSERVER,
+    WEB,
+    MOBILE,
+  }
+
   extern "Rust" {
+    // Identity Service Client
     type Client;
     fn initialize_client() -> Box<Client>;
     fn get_user_id_blocking(
       client: Box<Client>,
       auth_type: i32,
       user_info: String,
     ) -> Result<String>;
     fn verify_user_token_blocking(
       client: Box<Client>,
       user_id: String,
       device_id: String,
       access_token: String,
     ) -> Result<bool>;
     fn register_user_blocking(
       client: Box<Client>,
       user_id: String,
       device_id: String,
       username: String,
       password: String,
       user_public_key: String,
     ) -> Result<String>;
     fn login_user_pake_blocking(
       client: Box<Client>,
       user_id: String,
       device_id: String,
       password: String,
       user_public_key: String,
     ) -> Result<String>;
     fn login_user_wallet_blocking(
       client: Box<Client>,
       user_id: String,
       device_id: String,
       siwe_message: String,
       siwe_signature: Vec<u8>,
       user_public_key: String,
     ) -> Result<String>;
+    // Crypto Tools
+    fn generate_device_id(device_type: DeviceType) -> Result<String>;
   }
 }
 
 #[derive(Debug)]
 pub struct Client {
   identity_client: IdentityServiceClient<Channel>,
 }
 
 fn initialize_client() -> Box<Client> {
   Box::new(Client {
     identity_client: RUNTIME
       .block_on(IdentityServiceClient::connect(IDENTITY_SERVICE_SOCKET_ADDR))
       .unwrap(),
   })
 }
 
 #[instrument]
 fn get_user_id_blocking(
   client: Box<Client>,
   auth_type: i32,
   user_info: String,
 ) -> Result<String, Status> {
   RUNTIME.block_on(get_user_id(client, auth_type, user_info))
 }
 
 #[instrument]
 fn verify_user_token_blocking(
   client: Box<Client>,
   user_id: String,
   device_id: String,
   access_token: String,
 ) -> Result<bool, Status> {
   RUNTIME.block_on(verify_user_token(client, user_id, device_id, access_token))
 }
 
 #[instrument]
 fn register_user_blocking(
   client: Box<Client>,
   user_id: String,
   device_id: String,
   username: String,
   password: String,
   user_public_key: String,
 ) -> Result<String, Status> {
   RUNTIME.block_on(register_user(
     client,
     user_id,
     device_id,
     username,
     password,
     user_public_key,
   ))
 }
 
 #[instrument]
 fn login_user_pake_blocking(
   client: Box<Client>,
   user_id: String,
   device_id: String,
   password: String,
   user_public_key: String,
 ) -> Result<String, Status> {
   RUNTIME.block_on(login_user_pake(
     client,
     user_id,
     device_id,
     password,
     user_public_key,
   ))
 }
 
 #[instrument]
 fn login_user_wallet_blocking(
   client: Box<Client>,
   user_id: String,
   device_id: String,
   siwe_message: String,
   siwe_signature: Vec<u8>,
   user_public_key: String,
 ) -> Result<String, Status> {
   RUNTIME.block_on(login_user_wallet(
     client,
     user_id,
     device_id,
     siwe_message,
     siwe_signature,
     user_public_key,
   ))
 }