diff --git a/services/identity/Cargo.lock b/services/identity/Cargo.lock
--- a/services/identity/Cargo.lock
+++ b/services/identity/Cargo.lock
@@ -686,6 +686,7 @@
 version = "0.1.0"
 dependencies = [
  "argon2",
+ "bytes",
  "chrono",
  "clap",
  "curve25519-dalek",
diff --git a/services/identity/Cargo.toml b/services/identity/Cargo.toml
--- a/services/identity/Cargo.toml
+++ b/services/identity/Cargo.toml
@@ -21,6 +21,7 @@
 tracing-subscriber = "0.3"
 chrono = "0.4.19"
 rand = "0.8"
+bytes = "1.1"
 
 [build-dependencies]
 tonic-build = "0.6"
diff --git a/services/identity/src/database.rs b/services/identity/src/database.rs
--- a/services/identity/src/database.rs
+++ b/services/identity/src/database.rs
@@ -1,10 +1,11 @@
 use std::collections::HashMap;
 
+use bytes::Bytes;
 use opaque_ke::{errors::ProtocolError, ServerRegistration};
 use rusoto_core::{Region, RusotoError};
 use rusoto_dynamodb::{
   AttributeValue, DynamoDb, DynamoDbClient, GetItemError, GetItemInput,
-  GetItemOutput,
+  GetItemOutput, PutItemError, PutItemInput, PutItemOutput,
 };
 use tracing::{error, info};
 
@@ -83,6 +84,34 @@
     }
   }
 
+  pub async fn put_pake_registration(
+    &self,
+    user_id: String,
+    registration: ServerRegistration<Cipher>,
+  ) -> Result<PutItemOutput, RusotoError<PutItemError>> {
+    let input = PutItemInput {
+      table_name: "identity-pake-registration".to_string(),
+      item: HashMap::from([
+        (
+          "userID".to_string(),
+          AttributeValue {
+            s: Some(user_id.clone()),
+            ..Default::default()
+          },
+        ),
+        (
+          "pakeRegistrationData".to_string(),
+          AttributeValue {
+            b: Some(Bytes::from(registration.serialize())),
+            ..Default::default()
+          },
+        ),
+      ]),
+      ..PutItemInput::default()
+    };
+    self.client.put_item(input).await
+  }
+
   pub async fn get_token(
     &self,
     user_id: String,