commit 73dd812daab508a03b813873e2da68f6c7610357
Author: Fritz Schmid <fritz.schmid@fau.de>
Date:   Wed Jun 15 13:24:45 2022 +0200

    Init.

diff --git a/src/ophe.rs b/src/ophe.rs
new file mode 100644
index 0000000..9749a11
--- /dev/null
+++ b/src/ophe.rs
@@ -0,0 +1,159 @@
+
+#[macro_use] extern crate rocket;
+extern crate bls12_381;
+extern crate rand;
+
+use rocket_okapi::settings::UrlObject;
+use rocket_okapi::{openapi, openapi_get_routes, rapidoc::*, swagger_ui::*};
+use rocket::serde::json::Json;
+use rocket::Request;
+
+use ophe::core::{RatelimiterResponse,PublicParameters};
+use ophe::core;
+
+use rocket::State;
+use serde::{Deserialize, Serialize};
+use rocket_okapi::okapi::schemars;
+use rocket_okapi::okapi::schemars::JsonSchema;
+use bls12_381::Scalar;
+use bls12_381::Gt;
+use ophe::serializers;
+use serde_with::serde_as;
+
+
+use rocket::http::Status;
+
+
+
+#[rocket::main]
+async fn main() {
+    let client = reqwest::Client::new();
+    let res = client.get("http://localhost:9999/get_public_parameters").send()
+    .await.map_err(|x|{format!("Cryptoservice not reachable: {}",x)}).unwrap().text().await.unwrap();
+
+    let pp: PublicParameters = serde_json::from_str(&res).map_err(|x|{format!("Cryptoservice not reachable: {}",x)}).unwrap();
+
+    println!("Received public parameters from crytoservice");
+
+    let launch_result = rocket::build().mount("/", openapi_get_routes![make_request,decrypt])
+    .manage(pp)
+    .mount(
+        "/swagger-ui/",
+        make_swagger_ui(&SwaggerUIConfig {
+            url: "../openapi.json".to_owned(),
+            ..Default::default()
+        }),
+    ) .mount(
+        "/rapidoc/",
+        make_rapidoc(&RapiDocConfig {
+            general: GeneralConfig {
+                spec_urls: vec![UrlObject::new("General", "../openapi.json")],
+                ..Default::default()
+            },
+            hide_show: HideShowConfig {
+                allow_spec_url_load: false,
+                allow_spec_file_load: false,
+                ..Default::default()
+            },
+            ..Default::default()
+        }),
+    )    
+    .register("/",catchers![serialize_failed])
+    .launch()
+    .await;
+match launch_result {
+    Ok(_) => println!("Rocket shut down gracefully."),
+    Err(err) => println!("Rocket had an error: {}", err),
+};
+}
+
+#[derive(Serialize,Deserialize,JsonSchema)]
+struct UsernamePw{
+     username: String,
+     password: String
+}
+
+#[catch(422)]
+fn serialize_failed(_req: &Request) -> String {
+    format!("Malformed Request")
+}
+
+#[serde_as]
+#[derive(Serialize, Deserialize, JsonSchema)]
+pub struct EnrollResponse{
+    #[serde_as(as = "serializers::SerializeScalar")]
+    #[schemars(with = "String")]
+    n: Scalar,
+    #[serde_as(as = "Vec<serializers::SerializeGt>")]
+    #[schemars(with = "Vec<String>")]
+    ciphertext: Vec<Gt>
+}
+
+#[openapi()]
+#[post("/make_request",format = "json", data = "<request>")]
+async fn make_request(request: Json<UsernamePw>,pp: &State<core::PublicParameters>) -> Result<Json<EnrollResponse>,(Status, Json<String>)> {
+    let (ss,request1) = core::phe_init(&request.username,&request.password);
+
+    let client = reqwest::Client::new();
+
+    let res = client.post("http://localhost:9999/phe_help")
+    .json(&request1)
+    .send()
+    .await.map_err(|_x| {(Status::InternalServerError,Json("Cryptoserice unreachable.".to_string()))})?.text().await.map_err(|_x| {(Status::InternalServerError,Json("Cryptoserice unreachable.".to_string()))})?;
+
+    let response: RatelimiterResponse = serde_json::from_str(&res).map_err(|_x| {(Status::InternalServerError,Json("Invalid cryptoservice response.".to_string()))})?;
+
+    let mut msg = Vec::new();
+    for _x in 0..32{
+        msg.push(0u8);
+    }
+    let ciphertext = core::phe_enc_finish(&msg,&pp,&response,&ss).map_err(|x| {(Status::InternalServerError,Json("Decryption failed.".to_string()+&x))})?;
+
+    Ok(Json(EnrollResponse{n:ss.n,ciphertext}))
+}
+
+
+#[serde_as]
+#[derive(Serialize, Deserialize, JsonSchema)]
+pub struct DecryptRequest{
+    #[serde_as(as = "serializers::SerializeScalar")]
+    #[schemars(with = "String")]
+    n: Scalar,
+    username: String,
+    password: String,
+    #[serde_as(as = "Vec<serializers::SerializeGt>")]
+    #[schemars(with = "Vec<String>")]
+    ciphertext: Vec<Gt>
+}
+
+#[openapi()]
+#[post("/decrypt",format = "json", data = "<request>")]
+async fn decrypt(request: Json<DecryptRequest>,pp: &State<core::PublicParameters>) -> Result<Json<bool>,(Status, Json<String>)>{
+
+    let res = decrypt_err(request,pp).await;
+
+    res
+}
+
+
+async fn decrypt_err(request: Json<DecryptRequest>,pp: &State<core::PublicParameters>) -> Result<Json<bool>,(Status, Json<String>)> {
+    let (ss,request1) = core::phe_init_decrypt(&request.username,&request.password,&request.n);
+
+    let client = reqwest::Client::new();
+
+    let res = client.post("http://localhost:9999/phe_help")
+    .json(&request1)
+    .send()
+    .await.map_err(|_x| {(Status::InternalServerError,Json("Cryptoserice unreachable.".to_string()))})?.text().await.map_err(|_x| {(Status::InternalServerError,Json("Internal Error.".to_string()))})?;
+
+    let response: RatelimiterResponse = serde_json::from_str(&res).map_err(|_x| {(Status::InternalServerError,Json("Invalid cryptoservice response.".to_string()))})?;
+
+    let mut msg = Vec::new();
+    for _x in 0..32{
+        msg.push(0u8);
+    }
+    let expected = core::phe_dec_finish_simple(&request.ciphertext,&pp,&response,&ss).map_err(|x| {(Status::InternalServerError,Json("Decryption failed.".to_string()+&x))})?;
+    println!("{:?}",expected);
+    Ok(Json(true))
+}
+