feat(aes-256): AES256 encryption and decryption plugin added (#2562)

* feat(aes-256): AES256 encryption and decryption plugin added

* refactor

src/@ionic-native/plugins/aes-256/index.ts

@@ -0,0 +1,66 @@
+import { Injectable } from '@angular/core';
+import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
+
+/**
+ * @name AES256
+ * @description
+ * This cordova ionic plugin allows you to perform AES 256 encryption and decryption on the plain text.
+ * It's a cross-platform plugin which supports both Android and iOS.
+ * The encryption and decryption are performed on the device native layer so that the performance is much faster.
+ *
+ * @usage
+ * ```typescript
+ * import { AES256 } from '@ionic-native/aes-256';
+ *
+ *
+ * constructor(private aES256: AES256) { }
+ *
+ * ...
+ *
+ *
+ * this.aES256.encrypt('12345678123456781234567812345678', '1234567812345678', 'testdata')
+ *   .then(res => console.log('Encrypted Data: ',res))
+ *   .catch((error: any) => console.error(error));
+ *
+ * this.aES256.decrypt('12345678123456781234567812345678', '1234567812345678', 'encryptedData')
+ *   .then(res => console.log('Decrypted Data : ',res))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ */
+@Plugin({
+  pluginName: 'AES256',
+  plugin: 'cordova-plugin-aes256-encryption',
+  pluginRef: 'cordova.plugins.AES256',
+  repo: 'https://github.com/Ideas2IT/cordova-aes256',
+  platforms: ['Android', 'iOS'],
+  install: 'ionic cordova plugin add cordova-plugin-aes256-encryption'
+})
+@Injectable()
+export class AES256 extends IonicNativePlugin {
+
+  /**
+   * This function used to perform the aes256 encryption
+   * @param {string} secureKey A 32 bytes string, which will used as input key for AES256 encryption.
+   * @param {string} secureIV A 16 bytes string, which will used as initial vector for AES256 encryption.
+   * @param {string} data A string which will be encrypted
+   * @return {Promise<string>} Returns a promise that resolves when encryption happens. The success response will returns encrypted data.
+   */
+  @Cordova()
+  encrypt(secureKey: string, secureIV: string, data: string): Promise<string> {
+    return;
+  }
+
+  /**
+   * This function used to perform the aes256 decryption
+   * @param {string} secureKey A 32 bytes string, which will used as input key for AES256 decryption.
+   * @param {string} secureIV A 16 bytes string, which will used as initial vector for AES256 decryption.
+   * @param {string} data An AES256 encrypted data which will be decrypted.
+   * @return {Promise<string>} Returns a promise that resolves when decryption happens. The success response will returns decrypted data.
+   */
+  @Cordova()
+  decrypt(secureKey: string, secureIV: string, data: string): Promise<string> {
+    return;
+  }
+
+}