feat: add division and powmod (WIP) and start adapting task runner

src/tasks/mod.rs

@@ -11,6 +11,7 @@ use tasks01::{
     gcm::{gcm_decrypt, gcm_encrypt},
     gfmul::gfmul_task,
     pad_oracle::padding_oracle,
+    pfmath::gfpoly_add,
     poly2block::poly2block,
     sea128::sea128,
     xex::{self, fde_xex},
@@ -83,6 +84,12 @@ pub fn task_deploy(testcase: &Testcase) -> Result<Value> {
 
             Ok(json)
         }
+        "gfpoly_add" => {
+            let result = gfpoly_add(args)?;
+            let json = json!({"plaintext" : result.to_c_array()});
+
+            Ok(json)
+        }
         _ => Err(anyhow!(
             "Fatal. No compatible action found. Json data was {:?}. Arguments were; {:?}",
             testcase,

src/tasks/tasks01/mod.rs

@@ -2,6 +2,7 @@ pub mod block2poly;
 pub mod gcm;
 pub mod gfmul;
 pub mod pad_oracle;
+pub mod pfmath;
 pub mod poly2block;
 pub mod sea128;
 pub mod xex;

src/tasks/tasks01/pfmath.rs

@@ -0,0 +1,15 @@
+use anyhow::Result;
+use base64::{prelude::BASE64_STANDARD, Engine};
+use serde_json::Value;
+
+use crate::utils::field::Polynomial;
+
+pub fn gfpoly_add(args: &Value) -> Result<Polynomial> {
+    let poly_a = Polynomial::from_c_array(&args["A"].clone());
+
+    let poly_b = Polynomial::from_c_array(&args["B"].clone());
+
+    let result = poly_a + poly_b;
+
+    Ok(result)
+}