引言：
- 在從事JAVA工作的第五個年頭，突然開始對js加密js解密感興趣。開始了探索的路程
1. JavaScript基礎知識：
- JavaScript是一種用于Web開發的腳本語言，它包括以下基礎概念：
-
變量（Variables）：用于存儲數據的容器，可使用
var、let或const關鍵字聲明。 - 數據類型（Data Types）：包括數字、字符串、布爾值等基本數據類型，以及對象、數組等引用數據類型。
- 運算符（Operators）：用于執行各種操作，如加法、比較、邏輯運算。
-
條件語句（Conditional Statements）：用于根據條件執行不同的代碼塊，如
if、else。 -
循環（Loops）：用于多次執行相同的代碼塊，如
for和while循環。
-
變量（Variables）：用于存儲數據的容器，可使用
2. 加密和解密的概念：
- 加密是將數據轉化為不可讀的形式，以保護其安全性，但又確保正常運行，而解密是恢復加密數據的過程，將其還原為可讀的形式。
3. JavaScript中的加密：
-
JavaScript中常見的加密算法包括：
-
AES（Advanced Encryption Standard）：
- AES是一種對稱加密算法，用于加密和解密數據。
- 它支持不同的密鑰長度（128位、192位和256位），提供了強大的數據保護。
- 在JavaScript中，可以使用現成的庫如CryptoJS來實現AES加密和解密操作。
-
DES（Data Encryption Standard）：
- DES是一種早期的對稱加密算法，已經不再被廣泛使用，因為其56位密鑰長度相對較短，容易受到暴力破解攻擊。
- 在JavaScript中，你可以找到一些實現DES加密和解密的庫，但不推薦在安全應用中使用它。
-
RSA（Rivest–Shamir–Adleman）：
- RSA是一種非對稱加密算法，用于加密和解密數據以及數字簽名。
- 它使用公鑰和私鑰，其中公鑰用于加密，私鑰用于解密。
- JavaScript中通常用于加密數據的傳輸，如HTTPS通信中的密鑰交換。
-
SHA（Secure Hash Algorithm）：
- SHA系列算法用于生成數據的哈希值，而不是加密和解密數據。
- 常見的SHA算法包括SHA-1、SHA-256、SHA-3等，用于數據完整性校驗和密碼散列存儲。
-
HMAC（Hash-based Message Authentication Code）：
- HMAC是一種用于驗證消息完整性和身份的哈希消息認證碼。
- 它通常與其他加密算法一起使用，確保數據在傳輸過程中沒有被篡改。
這些加密算法在JavaScript中有不同的實現方式，可以根據具體需求選擇合適的算法來保護數據的安全性。在實際應用中，要注意選擇足夠強大且適合特定用途的加密算法，以確保數據的安全性。
-
AES（Advanced Encryption Standard）：
今日案例
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先用JS在線解密工具嘗試
代碼丟進去，然后直接點解密。發現不行，接下來嘗試人工解密。
JS解密后
import crypto from 'crypto-js';
var IV = '123';
var KEY = '1231231';
export function encrypt(algorithm) {
var key = crypto.enc.Utf8.parse(KEY);
var iv = crypto.enc.Utf8.parse(IV);
var res = crypto.AES.encrypt(algorithm, key, {
'iv': iv,
'mode': crypto.mode.CBC,
'padding': crypto.pad.Pkcs7
});
return res.toString();
}
export function decrypt(algorithm) {
var key = crypto.enc.Utf8.parse(KEY);
var iv = crypto.enc.Utf8.parse(IV);
var res = crypto.AES.decrypt(algorithm, key, {
'iv': iv,
'padding': crypto.pad.Pkcs7
});
return res.toString(crypto.enc.Utf8);
}
完成撒花。
