aes | 易学教程

攻防世界misc-3-1

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无后缀，用winhex发现是rar，添加后缀解压，依据是无后缀，丢到kali，是一个流量数据包 TCP追踪流在第五个数据包发现flag.rar 导出对象选择HTTP 找到flag.rar 然后丢到你想找的到路径获得一个压缩包，但是需要密码我们在追踪第六个TCP流的时候发现了一些Linux指令一个base64编码一段python的代码最后还有一段拼音 zhu ni cheng gong 先将那段python代码整理一下，是一个解密脚本 # coding:utf-8 __author__ = 'YFP' from Crypto import Random from Crypto.Cipher import AES import sys import base64 IV = 'QWERTYUIOPASDFGH' def decrypt(encrypted): aes = AES.new(IV, AES.MODE_CBC, IV) return aes.decrypt(encrypted) def encrypt(message): length = 16 count = len(message) padding = length - (count % length) message = message + '\0' * padding aes = AES.new(IV,

Issue with key and iv on AES 256-CBC

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问题 I get a encrypted base64 string from Python. The format is AES 256 CBC, but when I try to decrypt using Android it return decrypted string as nil. Python # coding=utf-8 import base64 from random import choice from string import letters try: from Crypto import Random from Crypto.Cipher import AES except ImportError: import crypto import sys sys.modules['Crypto'] = crypto from crypto.Cipher import AES from crypto import Random class AESCipher(object): def __init__(self, key): self.bs = 32 self

Try to understand Before marking duplicate: InvalidKeyException: Illegal key size [duplicate]

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问题 This question already has answers here : InvalidKeyException Illegal key size (5 answers) Closed 2 years ago . Actually I am getting InvalidKeyException: Illegal key size, but same code is working in production. When I am trying to run this code locally, I am facing key size issue while decoding in below line: cipher.init(2, new SecretKeySpec(secretKey, "AES"), new IvParameterSpec(initVector)); In above line I am getting following exception: public byte[] getPageByteStream(String fileName)

CipherOutputStream corrupting headers in Android

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问题 I'm using a simple CipherInput/OutputStream to try to encrypt/decrypt files in android. The problem I'm having is that it seems to be corrupting the first few bytes of the file but not the rest. Here's an example of an output from a simple text file: Original Text: "Test for Android cipher. The quick brown fox jumps over the lazy dog." Cycled through Encryption and Decryption: @ÍØJb¢çc°ÌHOšpher. The quick brown fox jumps over the the lazy dog. Here's my code: public static SecretKey

How to properly write JVM AES/CFB8 Encryption in Go

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问题 I wrote a little test in Kotlin to encrypt some text "Hello" using a Cipher instance with the algorithm "AES/CFB8/NoPadding". (minecraft stuff) And I am now attempting to do the same in Go, however I am unable to produce the same result. All the different methods I have tried always produce something different. These are the following threads/examples I've already looked through in order to get to this point. How to use rsa key pair for AES encryption and decryprion in golang https://play

CryptoAPI C++ interop with Java using AES

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问题 I am trying to encrypt in C++ using CryptoAPI and decrypt Java using SunJCE. I have gotten the RSA key to work -- and verified on a test string. However, my AES key is not working -- I get javax.crypto.BadPaddingException: Given final block not properly padded . C++ Encryption: // init and gen key HCRYPTPROV provider; CryptAcquireContext(&provider, NULL, MS_ENH_RSA_AES_PROV, PROV_RSA_AES, CRYPT_VERIFYCONTEXT); // Use symmetric key encryption HCRYPTKEY sessionKey; DWORD exportKeyLen;

Aes javascript encrypt - java decrypt

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问题 I'm trying to encrypt a message in javascript (using crypto-js library) and to decrypt it in java. This is the javascript code: var key = CryptoJS.enc.Utf8.parse(aesPassword); var ive = CryptoJS.enc.Utf8.parse(aesIv); var encryptedData = CryptoJS.AES.encrypt(dataToEncrypt, key, {mode: CryptoJS.mode.CBC, padding: CryptoJS.pad.Pkcs7, iv: ive}); And this is the java code: final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); final SecretKeySpec key = new SecretKeySpec(aesPassword()

Encrypt and decrypt doesn't give the same plain text using AES/ECB/NoPadding

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问题 String plain1= "Test"; byte[] cipher = SplashSecure.getInstance().encrypt2(plain1); String plain2 = SplashSecure.getInstance().decrypt2(cipher); plain = Test�� After decryption plainText2 should be equal to plaintext . But it's not. Encrypt/Decrypt methods. public void initKey(String key) { String paddedKey = Utils.padString(key); mKeyspec = new SecretKeySpec(Utils.getBytes(paddedKey), "AES/ECB/NoPadding"); // Utils.getBytes returns "paddedKey.getBytes("CP1252")" }

How to decompress an AES-256 Encrypted zip files?

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I am developing an android application which requires to decompress an AES-256 encrypted zip files, is there any libraries out there that I can use to accomplish that? I am greatly appreciative of any guidance or help. zip4j , java library to handle Zip files (Open source, Apache License v2.0). http://www.lingala.net/zip4j/ Create, Add, Extract, Update, Remove files from a Zip file Read/Write password protected Zip files Supports AES 128/256 Encryption Supports Standard Zip Encryption You can download binary, sources and examples. I ended up using an external library at http://code.google.com

AES/cbc/pkcs5padding encription IOS

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问题 I have used AES algorithm for encryption in android. The following code we have used for encryption. String seed = "somekey"; Key key = null; // 128 bit key byte[] byteKey = seed.substring(0, 16).getBytes("UTF-8"); key = new SecretKeySpec(byteKey, "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec( new byte[16])); byte[] encValue = cipher.doFinal(pValue.getBytes()); encryptedText = new BASE64Encoder().encode(encValue);