fix: removed incorrect test

10d9e · May 11, 2024 · 3d89d0a · 3d89d0a
1 parent b0c47b0
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diff --git a/contracts/Paillier.sol b/contracts/Paillier.sol
@@ -133,22 +133,6 @@ contract Paillier {
         return enc_result;
     }
 
-    function mul(
-        Ciphertext calldata a,
-        Ciphertext calldata b,
-        PublicKey calldata publicKey
-    ) public view returns (BigNumber memory) {
-        BigNumber memory enc_a = BigNumber(a.value, false, BigNum.bitLength(a.value));
-        BigNumber memory enc_b = BigNumber(b.value, false, BigNum.bitLength(b.value));
-        BigNumber memory pub_n = BigNumber(publicKey.n, false, BigNum.bitLength(publicKey.n));
-
-        // Calculate the encrypted result as enc_a^enc_b * enc_b^enc_a % pub_n^2
-        BigNumber memory alpha = BigNum.modexp(enc_a, enc_b, BigNum.pow(pub_n, 2));
-        BigNumber memory beta = BigNum.modexp(enc_b, enc_a, BigNum.pow(pub_n, 2));
-        BigNumber memory enc_result = BigNum.mod(BigNum.mul(alpha, beta), BigNum.pow(pub_n, 2));
-        return enc_result;
-    }
-
     /// @notice Divides an encrypted value by a plaintext constant
     /// @dev The function computes Enc(a)^(n-1) % n^2 to divide Enc(a) by b
     /// @param a The encrypted value as a Ciphertext

diff --git a/test/Paillier.ts b/test/Paillier.ts
@@ -65,37 +65,6 @@ describe('Paillier', function () {
     expect(dec_sum).to.equal(3);
   });
 
-  it('should multiply 2 ciphertexts', async function () {
-
-    const { Paillier, publicKey, privateKey } = await loadFixture(fixture);
-    const a: bigint = BigInt(2);
-    const b: bigint = BigInt(5);
-    const enc_a: Ciphertext = {
-      value: ethers.toBeHex(publicKey.encrypt(a)),
-    };
-    const enc_b: Ciphertext = {
-      value: ethers.toBeHex(publicKey.encrypt(b)),
-    };
-
-    // Public key
-    const pubKey: PublicKey = {
-      n: ethers.toBeHex(publicKey.n),
-      g: ethers.toBeHex(publicKey.g),
-    };
-
-    // bit length will differ to what has been stated in this script.
-    // if using 256-bit key, bit_length will be 264 as "0x" prefix may have been factored in
-    // Now lets deploy the contract and test the addition
-    const enc_prod = await Paillier.mul(enc_a, enc_b, pubKey);
-    const enc_prod_int = bigIntConversion.hexToBigint(enc_prod[0]);
-
-    // Conversion to int for convenience
-    const dec_prod = Number(privateKey.decrypt(enc_prod_int));
-    console.log(dec_prod);
-    // We want dec_prod to equal 10
-    expect(dec_prod).to.equal(10);
-  });
-
   it('should add a ciphertext and plaintext', async function () {
     const { Paillier, publicKey, privateKey } = await loadFixture(fixture);
     const a: bigint = BigInt(1);