docs(common): remove ebytes (#293)

* docs(common): remove ebytes

* docs(common): simplify user decryption

Author: PacificYield

docs/solidity-guides/decryption/user-decryption.md

@@ -25,7 +25,7 @@ User decryption is facilitated by the **Relayer** and the **Key Management Syste
 
 ## Step 1: retrieve the ciphertext
 
-To retrieve the ciphertext that needs to be re-encrypted, you can implement a view function in your smart contract. Below is an example implementation:
+To retrieve the ciphertext that needs to be decrypted, you can implement a view function in your smart contract. Below is an example implementation:
 
 ```solidity
 import "@fhevm/solidity/lib/FHE.sol";
@@ -44,56 +44,3 @@ Here, `balanceOf` allows retrieval of the user’s encrypted balance stored on t
 ## Step 2: decrypt the ciphertext
 
 User decryption is performed client-side using the `@fhevm/sdk` library. [Refer to the guide](../../frontend/webapp.md) to learn how to include `@fhevm/sdk` in your project.
-Below is an example of how to implement user decryption in a dApp:
-
-```ts
-import { createInstances } from "../instance";
-import { getSigners, initSigners } from "../signers";
-import abi from "./abi.json";
-import { createInstance } from "@fhevm/sdk/bundle";
-import { Contract, BrowserProvider } from "ethers";
-
-const CONTRACT_ADDRESS = "";
-
-const provider = new BrowserProvider(window.ethereum);
-const accounts = await provider.send("eth_requestAccounts", []);
-const USER_ADDRESS = accounts[0];
-
-await initSigners(); // Initialize signers
-const signers = await getSigners();
-
-const instance = await createInstances(this.signers);
-// Generate the private and public key, used for the user decryption
-const { publicKey, privateKey } = instance.generateKeypair();
-
-// Create an EIP712 object for the user to sign.
-const eip712 = instance.createEIP712(publicKey, CONTRACT_ADDRESS);
-
-// Request the user's signature on the public key
-const params = [USER_ADDRESS, JSON.stringify(eip712)];
-const signature = await window.ethereum.request({ method: "eth_signTypedData_v4", params });
-
-// Get the ciphertext to reencrypt
-const ConfidentialERC20 = new Contract(CONTRACT_ADDRESS, abi, signer).connect(provider);
-const encryptedBalance = ConfidentialERC20.balanceOf(userAddress);
-
-// This function will call the relayer and decrypt the received value with the provided private key
-const userBalance = instance.reencrypt(
-  encryptedBalance, // the encrypted balance
-  privateKey, // the private key generated by the dApp
-  publicKey, // the public key generated by the dApp
-  signature, // the user's signature of the public key
-  CONTRACT_ADDRESS, // The contract address where the ciphertext is
-  USER_ADDRESS, // The user address where the ciphertext is
-);
-
-console.log(userBalance);
-```
-
-This code retrieves the user’s encrypted balance, re-encrypts it with their public key, and decrypts it on the client-side using their private key.
-
-### Key additions to the code
-
-- **`instance.generateKeypair()`**: Generates a public-private keypair for the user.
-- **`instance.createEIP712(publicKey, CONTRACT_ADDRESS)`**: Creates an EIP712 object for signing the user’s public key.
-- **`instance.reencrypt()`**: Facilitates the user decryption process by contacting the relayer and decrypting the data locally with the private key.

docs/solidity-guides/functions.md

@@ -59,7 +59,6 @@ The library ensures that all operations on encrypted data follow the constraints
 - **Casting between encrypted types**: `FHE.asEbool` converts encrypted integers to encrypted booleans
 - **Casting to encrypted types**: `FHE.asEuintX` converts plaintext values to encrypted types
 - **Casting to encrypted addresses**: `FHE.asEaddress` converts plaintext addresses to encrypted addresses
-- **Casting to encrypted bytes**: `FHE.asEbytesX` converts plaintext bytes to encrypted bytes
 
 #### `asEuint`
 

docs/solidity-guides/key_concepts.md

@@ -32,7 +32,6 @@ fhevm provides functions to cast between encrypted types:
 - **Casting between encrypted types**: `FHE.asEbool` converts encrypted integers to encrypted booleans
 - **Casting to encrypted types**: `FHE.asEuintX` converts plaintext values to encrypted types
 - **Casting to encrypted addresses**: `FHE.asEaddress` converts plaintext addresses to encrypted addresses
-- **Casting to encrypted bytes**: `FHE.asEbytesX` converts plaintext bytes to encrypted bytes
 
 For more information see [use of encrypted types](types.md).