diff --git a/fastcrypto-zkp/src/bn254/unit_tests/zk_login_tests.rs b/fastcrypto-zkp/src/bn254/unit_tests/zk_login_tests.rs
index 273b7f5d38..4d762b3070 100644
--- a/fastcrypto-zkp/src/bn254/unit_tests/zk_login_tests.rs
+++ b/fastcrypto-zkp/src/bn254/unit_tests/zk_login_tests.rs
@@ -577,10 +577,13 @@ fn test_all_inputs_hash() {
         "2487117669597822357956926047501254969190518860900347921480370492048882803688".to_string()
     );
 }
-
 #[test]
 fn test_alternative_iss_for_google() {
     let input = ZkLoginInputs::from_json("{\"proofPoints\":{\"a\":[\"7566241567720780416751598994698310678767195459947224622023785587667176814058\",\"18104499930818305143361187733659014043953751050617136254447624192327280445771\",\"1\"],\"b\":[[\"11369230593957954942221175389182778816136534144714579815927653075736806430994\",\"11928003240637992017698644299021052465098754853899210401706726930513411198353\"],[\"2597127058046351054449743605218058440565462021354202666955356076272028963802\",\"3385145993275542896693643488618289924488296318344621918448585222369718288892\"],[\"1\",\"0\"]],\"c\":[\"395141536511114303768253959602639884294254888080713473665269769443249414257\",\"21430657725804540809568084344756144327539843580919730138594118365564728808275\",\"1\"]},\"issBase64Details\":{\"value\":\"yJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLC\",\"indexMod4\":1},\"headerBase64\":\"eyJhbGciOiJSUzI1NiIsImtpZCI6ImM5YWZkYTM2ODJlYmYwOWViMzA1NWMxYzRiZDM5Yjc1MWZiZjgxOTUiLCJ0eXAiOiJKV1QifQ\"}", "4959624758616676340947699768172740454110375485415332267384397278368360470616").unwrap();
+    let invalid_proof_input = ZkLoginInputs::from_json("{\"proofPoints\":{\"a\":[\"1\",\"18104499930818305143361187733659014043953751050617136254447624192327280445771\",\"1\"],\"b\":[[\"1\",\"11928003240637992017698644299021052465098754853899210401706726930513411198353\"],[\"2597127058046351054449743605218058440565462021354202666955356076272028963802\",\"3385145993275542896693643488618289924488296318344621918448585222369718288892\"],[\"1\",\"0\"]],\"c\":[\"395141536511114303768253959602639884294254888080713473665269769443249414257\",\"21430657725804540809568084344756144327539843580919730138594118365564728808275\",\"1\"]},\"issBase64Details\":{\"value\":\"yJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLC\",\"indexMod4\":1},\"headerBase64\":\"eyJhbGciOiJSUzI1NiIsImtpZCI6ImM5YWZkYTM2ODJlYmYwOWViMzA1NWMxYzRiZDM5Yjc1MWZiZjgxOTUiLCJ0eXAiOiJKV1QifQ\"}", "4959624758616676340947699768172740454110375485415332267384397278368360470616").unwrap();
+    let _ = ZkLoginInputs::from_json("{\"proofPoints\":{\"a\":[\"18104499930818305143361187733659014043953751050617136254447624192327280445771\",\"1\"],\"b\":[[\"11369230593957954942221175389182778816136534144714579815927653075736806430994\",\"11928003240637992017698644299021052465098754853899210401706726930513411198353\"],[\"2597127058046351054449743605218058440565462021354202666955356076272028963802\",\"3385145993275542896693643488618289924488296318344621918448585222369718288892\"],[\"1\",\"0\"]],\"c\":[\"395141536511114303768253959602639884294254888080713473665269769443249414257\",\"21430657725804540809568084344756144327539843580919730138594118365564728808275\",\"1\"]},\"issBase64Details\":{\"value\":\"yJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLC\",\"indexMod4\":1},\"headerBase64\":\"eyJhbGciOiJSUzI1NiIsImtpZCI6ImM5YWZkYTM2ODJlYmYwOWViMzA1NWMxYzRiZDM5Yjc1MWZiZjgxOTUiLCJ0eXAiOiJKV1QifQ\"}", "4959624758616676340947699768172740454110375485415332267384397278368360470616").is_err();
+    let _ = ZkLoginInputs::from_json("{\"proofPoints\":{\"a\":[\"18104499930818305143361187733659014043953751050617136254447624192327280445771\",\"1\"],\"b\":[[\"11369230593957954942221175389182778816136534144714579815927653075736806430994\",\"11928003240637992017698644299021052465098754853899210401706726930513411198353\"],[\"2597127058046351054449743605218058440565462021354202666955356076272028963802\",\"3385145993275542896693643488618289924488296318344621918448585222369718288892\"],[\"1\",\"0\"]],\"c\":[\"395141536511114303768253959602639884294254888080713473665269769443249414257\",\"21430657725804540809568084344756144327539843580919730138594118365564728808275\",\"1\"]},\"issBase64Details\":{\"value\":\"yJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLC\",\"indexMod4\":1},\"headerBase64\":\"eyJhbGciOiJSUzI1NiIsImtpZCI6ImM5YWZkYTM2ODJlYmYwOWViMzA1NWMxYzRiZDM5Yjc1MWZiZjgxOTUiLCJ0eXAiOiJKV1QifQ\"}", "bad seed").is_err();
+
     let mut eph_pubkey_bytes = vec![0];
     eph_pubkey_bytes.extend(
         big_int_str_to_bytes(
@@ -611,4 +614,14 @@ fn test_alternative_iss_for_google() {
         true,
     );
     assert!(res.is_ok());
+
+    let invalid_res = verify_zk_login(
+        &invalid_proof_input,
+        10000,
+        &eph_pubkey_bytes,
+        &all_jwk,
+        &ZkLoginEnv::Test,
+        true,
+    );
+    assert!(invalid_res.is_err());
 }
diff --git a/fastcrypto-zkp/src/circom.rs b/fastcrypto-zkp/src/circom.rs
index 96b5363154..e4bc4422b4 100644
--- a/fastcrypto-zkp/src/circom.rs
+++ b/fastcrypto-zkp/src/circom.rs
@@ -11,7 +11,7 @@ pub fn g1_affine_from_str_projective(s: &CircomG1) -> Result<G1Affine, FastCrypt
     if s.len() != 3 {
         return Err(FastCryptoError::InvalidInput);
     }
-    Ok(G1Projective::new(
+    Ok(G1Projective::new_unchecked(
         s[0].parse::<Fq>()
             .map_err(|_| FastCryptoError::InvalidInput)?,
         s[1].parse::<Fq>()
@@ -33,7 +33,7 @@ pub fn g2_affine_from_str_projective(s: &CircomG2) -> Result<G2Affine, FastCrypt
             return Err(FastCryptoError::InvalidInput);
         }
     }
-    Ok(G2Projective::new(
+    Ok(G2Projective::new_unchecked(
         Fq2::new(
             s[0][0]
                 .parse::<Fq>()