{"id":464124,"date":"2020-01-07T09:36:19","date_gmt":"2020-01-07T09:36:19","guid":{"rendered":"https:\/\/www.knowband.com\/blog\/?p=463959\/"},"modified":"2022-07-14T10:51:24","modified_gmt":"2022-07-14T10:51:24","slug":"jak-skonfigurowa%c4%87-szyfrowanie-i-deszyfrowanie-mi%c4%99dzy-androidem-a-aplikacj%c4%85-internetow%c4%85-asp-net","status":"publish","type":"post","link":"https:\/\/www.knowband.com\/blog\/pl\/wskazowki\/jak-skonfigurowa%c4%87-szyfrowanie-i-deszyfrowanie-mi%c4%99dzy-androidem-a-aplikacj%c4%85-internetow%c4%85-asp-net\/","title":{"rendered":"Jak skonfigurowa\u0107 szyfrowanie i deszyfrowanie mi\u0119dzy aplikacj\u0105 internetow\u0105 Android i ASP.Net?"},"content":{"rendered":"<p><html lang=\"pl\"><head><meta charset=\"utf-8\"><\/head><body><\/p>\n<p style=\"text-align: justify;\">W tym szyfrowaniu u\u017cyjemy tajnego klucza do zaszyfrowania ci\u0105gu. Zastosowanym algorytmem b\u0119dzie AES z trybem CBC (Cipher Block Chaining).<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/Padding.jpeg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-816657 size-full\" src=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/Padding.jpeg\" alt=\"wy\u015bci\u00f3\u0142ka\" width=\"760\" height=\"380\" srcset=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/Padding.jpeg 760w, https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/Padding-300x150.jpeg 300w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Kod C# u\u017cyje dope\u0142nienia PKCS7, poniewa\u017c PKCS5 nie jest tam dost\u0119pny. W Androidzie u\u017cywa wewn\u0119trznie dope\u0142nienia PKCS5, nawet je\u015bli okre\u015blimy dope\u0142nienie PKCS7 w transformacji szyfru. Tak wi\u0119c okre\u015blamy r\u00f3wnie\u017c tryb dope\u0142niania PKCS5. Podczas test\u00f3w oba daj\u0105 te same prawid\u0142owe wyniki.<\/p>\n<p style=\"text-align: justify;\">W tej metodzie szyfrowania pojedynczy klucz jest u\u017cywany zar\u00f3wno jako klucz tajny, jak i s\u00f3l.<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/encryption-method.jpeg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-816655 size-full\" src=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/encryption-method.jpeg\" alt=\"metoda szyfrowania\" width=\"760\" height=\"380\" srcset=\"https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/encryption-method.jpeg 760w, https:\/\/www.knowband.com\/blog\/wp-content\/uploads\/2020\/01\/encryption-method-300x150.jpeg 300w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Podczas u\u017cywania r\u00f3\u017cnych kluczy dla klucza tajnego i soli istnia\u0142a pewna r\u00f3\u017cnica mi\u0119dzy wersjami salt zakodowanymi Base64 (lub wektorem inicjuj\u0105cym). Wersje zakodowane w Base64 zosta\u0142y utworzone przez kody Androida i C# i r\u00f3\u017cni\u0142y si\u0119 od siebie.<\/p>\n<h2 style=\"text-align: justify;\">Aby temu zaradzi\u0107, u\u017cyli\u015bmy jednego klucza, kt\u00f3ry b\u0119dzie s\u0142u\u017cy\u0142 zar\u00f3wno jako tajny klucz, jak i s\u00f3l.<\/h2>\n<h3 style=\"text-align: justify;\">Kod cz\u0119\u015bci dla Androida wygl\u0105da nast\u0119puj\u0105co:<\/h3>\n<pre class=\"brush: actionscript3; gutter: true\">public class EncryptionUtils { prywatne ko\u0144cowe String characterEncoding = \"UTF-8\"; private final String cipherTransformation = \"AES\/CBC\/PKCS5Padding\"; private final String aesEncryptionAlgorithm = \"AES\"; public String encrypt(String plainText, String key) generuje UnsupportedEncodingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { byte [] plainTextbytes = plainText.getBytes(characterEncoding); bajt [] keyBytes = getKeyBytes(klucz); \/\/ zwr\u00f3\u0107 Base64.encodeToString(encrypt(plainTextbytes,keyBytes, keyBytes), Base64.DEFAULT); return Base64.encodeToString(encrypt(plainTextbytes,keyBytes, keyBytes), Base64.NO_WRAP); } public String decrypt(String zaszyfrowany tekst, klucz ci\u0105gu) zg\u0142asza KeyException, GeneralSecurityException, GeneralSecurityException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException, IOException { byte [] cipheredBytes = Base64.decode(encryptedText, Base64.DEFAULT); byte[] keyBytes = getKeyBytes(klucz); zwr\u00f3\u0107 nowy String (decrypt(cipheredBytes, keyBytes, keyBytes), characterEncoding); } public byte [] decrypt( byte[] cipherText, byte[] key, byte [] initialVector) zg\u0142asza NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { Cipher Transcipher = Cipher.getInstance);(cipherTransformation); SecretKeySpec secretKeySpecy = new SecretKeySpec(key, aesEncryptionAlgorithm); IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector); cipher.init(Cipher.DECRYPT_MODE, secretKeySpecy, ivParameterSpec); tekst zaszyfrowany = cipher.doFinal(zaszyfrowany tekst); zwr\u00f3\u0107 tekst zaszyfrowany; } public byte[] encrypt(byte[] plainText, byte[] key, byte [] initialVector) zg\u0142asza NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException { Cipher cipher = Cipher.getInstance);(cipherTransformation); SecretKeySpec secretKeySpec = new SecretKeySpec(key, aesEncryptionAlgorithm); IvParameterSpec ivParameterSpec = new IvParameterSpec(initialVector); cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); zwyk\u0142y tekst = cipher.doFinal(zwyk\u0142y tekst); return zwyk\u0142y tekst; } private byte[] getKeyBytes(String key) wyrzuca UnsupportedEncodingException{ byte [] keyBytes= new byte[16]; byte [] parametrKeyBytes= key.getBytes(znakKodowanie); System .arraycopy(parameterKeyBytes, 0 , keyBytes, 0, Math.min(parameterKeyBytes.length, keyBytes.length)); zwr\u00f3\u0107 keyBytes; } } Zalecana lektura: Skopiuj do schowka w JavaScript<\/pre>\n<h3 style=\"text-align: justify;\"><strong>Kod cz\u0119\u015bci C# wygl\u0105da nast\u0119puj\u0105co:<\/strong><\/h3>\n<pre class=\"brush: actionscript3; gutter: true\">\/\/ Szyfruje zwyk\u0142y tekst za pomoc\u0105 128-bitowego klucza AES i szyfru blokowego \u0142a\u0144cuchowego oraz zwraca ci\u0105g publiczny zakodowany w base64 Encrypt(String plainText, String key) { var plainBytes = Encoding.UTF8.GetBytes(plainText); return Convert.ToBase64String(Encrypt(plainBytes, GetRijndaelManaged(klucz))); } public string Decrypt(String zaszyfrowany tekst, String klucz) { var zaszyfrowanyBytes = Convert.FromBase64String(encryptedText); return Encoding.UTF8.GetString(Decrypt(encryptedBytes, GetRijndaelManaged(klucz))); } public byte[] Encrypt(byte[] plainBytes, RijndaelManaged rijndaelManaged) { return rijndaelManaged.CreateEncryptor() .TransformFinalBlock(plainBytes, 0, plainBytes.Length); } public byte[] Decrypt(byte[] cryptoData, RijndaelManaged rijndaelManaged) { return rijndaelManaged.CreateDecryptor() .TransformFinalBlock(encryptedData, 0, cryptoData.Length); } public RijndaelManaged GetRijndaelManaged(String secretKey) { var keyBytes = new byte[16]; var secretKeyBytes = Kodowanie.UTF8.GetBytes(secretKey); Array.Copy(secretKeyBytes, keyBytes, Math.Min(keyBytes.Length, secretKeyBytes.Length)); return new RijndaelManaged { Mode = CipherMode.CBC, Padding = PaddingMode.PKCS7, KeySize = 128, BlockSize = 128, Key = keyBytes, IV = keyBytes }; }<\/pre>\n<p style=\"text-align: justify;\">Za pomoc\u0105 powy\u017cszego kodu mo\u017cna zaszyfrowa\u0107 ci\u0105g znak\u00f3w na jednej platformie, a nast\u0119pnie odszyfrowa\u0107 go na drugiej platformie i odwrotnie.<\/p>\n<p style=\"text-align: justify;\" class=\"gt-block\"><strong>Zalecane przeczytanie:<\/strong> <a href=\"https:\/\/www.knowband.com\/blog\/tips\/see-code-ctp-file-colorful-php-file-netbeans\/\">Jak wy\u015bwietli\u0107 kod pliku \u201e.ctp\u201d tak kolorowy jak plik \u201e.php\u201d w NetBeans?<\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/XIYd7u3h574\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>W tym szyfrowaniu u\u017cyjemy tajnego klucza do zaszyfrowania ci\u0105gu. Zastosowanym algorytmem b\u0119dzie AES z trybem CBC (Cipher Block Chaining). Kod C# u\u017cyje dope\u0142nienia PKCS7, poniewa\u017c PKCS5 nie jest tam dost\u0119pny. W Androidzie u\u017cywa wewn\u0119trznie dope\u0142nienia PKCS5, nawet je\u015bli okre\u015blimy dope\u0142nienie PKCS7 w transformacji szyfru. Tak wi\u0119c okre\u015blamy r\u00f3wnie\u017c tryb dope\u0142niania PKCS5. Podczas test\u00f3w oba daj\u0105 [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":816658,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kbui_enabled":"","footnotes":""},"categories":[3259],"tags":[7520,19459,19458,28311,19456,19455,28312,19457],"class_list":["post-464124","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wskazowki","tag-android","tag-aplikacja-internetowa-asp-net","tag-deszyfrowanie","tag-deszyfrowanie-api","tag-deszyfrowanie-interfejsu-api","tag-szyfrowanie","tag-szyfrowanie-api","tag-szyfrowanie-interfejsu-api"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Jak skonfigurowa\u0107 szyfrowanie i deszyfrowanie mi\u0119dzy aplikacj\u0105 internetow\u0105 Android i ASP.Net? - Knowband Blog | Ecommerce Modules<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.knowband.com\/blog\/pl\/wskazowki\/jak-skonfigurowa\u0107-szyfrowanie-i-deszyfrowanie-mi\u0119dzy-androidem-a-aplikacj\u0105-internetow\u0105-asp-net\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak skonfigurowa\u0107 szyfrowanie i deszyfrowanie mi\u0119dzy aplikacj\u0105 internetow\u0105 Android i ASP.Net? - Knowband Blog | Ecommerce Modules\" \/>\n<meta property=\"og:description\" content=\"W tym szyfrowaniu u\u017cyjemy tajnego klucza do zaszyfrowania ci\u0105gu. 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