diff --git a/Cargo.toml b/Cargo.toml
index 5a917e6..0be002a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aws_packages"
-version = "0.0.16"
+version = "0.0.17"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/aws_packages/auth/auth_backend_base.py b/aws_packages/auth/auth_backend_base.py
index ac0425f..3fca268 100644
--- a/aws_packages/auth/auth_backend_base.py
+++ b/aws_packages/auth/auth_backend_base.py
@@ -1,5 +1,7 @@
 from aws_packages.auth.models import AuthenticationRequest, User
 
+# TODO: use abc abstractmethod
+
 
 class AuthBackendBase:
     """Base class for authentication backends"""
diff --git a/aws_packages/auth/solana/auth_backend.py b/aws_packages/auth/solana/auth_backend.py
index 60dd394..5b07131 100644
--- a/aws_packages/auth/solana/auth_backend.py
+++ b/aws_packages/auth/solana/auth_backend.py
@@ -13,12 +13,14 @@ class SolanaAuthBackend(AuthBackendBase):
     def __init__(self, url: str):
         self._url = url
 
-    def authenticate(self, login_request: AuthenticationRequest) -> User:
+    def authenticate(self, login_request_body: AuthenticationRequest) -> User:
         """Authenticate the request and returns an authenticated User"""
 
         # solana sdk call and authenticate or raise exception
+        if login_request_body.authcode != "1234":
+            raise Exception("Invalid authcode")
 
-        return User(principal=login_request.user)
+        return User(principal=login_request_body.user)
 
     def authenticate_with_token(self, token: str):
         """Authenticate user using jwt token and return status"""
diff --git a/aws_packages/auth/solana/views.py b/aws_packages/auth/solana/views.py
index 2eae7e8..e01d58b 100644
--- a/aws_packages/auth/solana/views.py
+++ b/aws_packages/auth/solana/views.py
@@ -2,5 +2,5 @@
 from aws_packages.auth.views import process_authenticate_request
 
 
-def process_icp_authenticate_request(request_body):
+def process_solana_authenticate_request(request_body):
     return process_authenticate_request(request_body, solana_auth_backend)
diff --git a/aws_packages/auth/views.py b/aws_packages/auth/views.py
index ac2137a..ae8fa5a 100644
--- a/aws_packages/auth/views.py
+++ b/aws_packages/auth/views.py
@@ -4,10 +4,11 @@
 from aws_lambda_powertools.event_handler import Response, content_types
 from aws_lambda_powertools.event_handler.exceptions import BadRequestError
 
+from aws_packages.auth.auth_backend_base import AuthBackendBase
 from aws_packages.auth.models import AuthenticationRequest, LoginResponse
 
 
-def process_authenticate_request(request_body, auth_backend):
+def process_authenticate_request(request_body, auth_backend: AuthBackendBase):
     if request_body is None:
         raise BadRequestError("No request body provided")
 
@@ -16,6 +17,7 @@ def process_authenticate_request(request_body, auth_backend):
     try:
         auth_user = auth_backend.authenticate(request_obj)
     except Exception as e:
+        # TODO: Raise error instead of response
         return Response(
             status_code=HTTPStatus.BAD_REQUEST.value,
             content_type=content_types.APPLICATION_JSON,