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How to decrypt ciphertext using openssl in C?
#include "openssl/aes.h" char buffer[1000]; AES_KEY dec_key; AES_set_decrypt_key(key, 128, &dec_key); AES_cbc_encrypt(otherString, buffer, strlen(line) - 16, &dec_key, array, AES_DECRYPT); //AES_KEY dec_key; //AES_set_decrypt_key(key, keySize, &dec_key); //AES_cbc_encrypt(ciphertext, result, textLen, &dec_key, iv, AES_DECRYPT); This works for me. 128 is bits for 16-byte key. But i believe, you also have bug somewhere in -1 -15 -16 string length. This part of while loop can be changed to fix the problem: int strLen = strlen(line) - 16; char otherString[strLen + 1]; strncpy(otherString, p, strLen); otherString[strLen] = ''; array = array + strLen; Here is also nice AES CBC encryption/decryption example code and your working c

Categories : Python

AES | Encrypt with OpenSSL, decrypt with mcrypt
This is probably because of a misinterpretation from your part. You say: I don't use a salt, so no IV (should be null). But there is no reason at all why that would be the case. The EVP_BytesToKey method provided both a key and an IV. The key is obviously correct, but the IV is not. This will result in random characters in your plain text (the IV only changes the first block). As this block will likely contain control characters and what more, it may not display well. Remember that a salt and IV may have a few things in common (should not be repeated, can be public etc.) but that they are entirely different concepts in cryptography. Please try again with your Qt code, and this time print out the IV as well as the key...

Categories : PHP

Rails 3 & Encrypted Strings Gem - getting OpenSSL::Cipher::CipherError: bad decrypt error
I had a similar issue upgrading from 1.9.3 to 2.2.2 dealing with the Symmetric Encryption gem. The root cause ended up being the fact that the gem used Ruby's marshaling library, which had changed between versions. I ultimately had to decrypt all of the data in 1.9.3 before upgrading to 2.2.2, which proved to be a miserable experience. From the docs, Marshaled data has major and minor version numbers stored along with the object information. In normal use, marshaling can only load data written with the same major version number and an equal or lower minor version number.

Categories : Ruby On Rails

Encrypt data using c# and decrypt it using openssl api, why there are lots of trashy padding at the end of decrypted data?
The issue is that you should use the decrypted size instead of directly treating the output of the decryption as a null terminated string. RSA_private_decrypt() returns the size of the recovered plaintext.

Categories : C#

decrypt pfx OR p12 using iaik_jce.jar in Java throws Unable to decrypt PrivateKey! exception
I solved the issue myself. I needed to do some initialization which i did not do before. iaik.security.provider.IAIK.addAsProvider(false); Adding the above statement did the trick

Categories : Java

Compile Openssl with MinGW on Windows - fatal error: openssl/md4.h: No such file or directory
Find the directory where the included file, openssl/md4.h, is installed and include that directory in the command. For example, if the full path of openssl/md4.h is c:opensslincludeopensslmd4.h, your command would become: g++ -Ic:opensslinclude tst.cpp -lcrypto

Categories : C

Update openssl version in the guardianproject/openssl-android
First I don't have any idea of the meaning of the message Reversed (or previously applied) patch detected! Assume -R? and what to answer except y or n. Yeah, that's one of those patch-isms that rates high on the usability scale. When its asking you if you want to reverse it, its asking if you want to remove a previously applied patch from a source file. In my opinion, it should (1) add it if not present, or (2) move on if present. There is no (3) torture the user. If I supply a switch (perhaps -prompt) or run unpatch, then I should be asked 20 questions. Otherwise, just apply the damn patch. Reversed (or previously applied) patch detected! Assume -R? [n] y I believe you should have answered NO here by typing n. It was asking you to remove a previously applied patch.

Categories : Android

OpenSSL + Self Signed Cert = OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
Extracted from here So basically all you have to do is this ENV['SSL_CERT_FILE'] = "your certificate path" and I guess all will work You might find this Reference useful : http://mislav.uniqpath.com/2013/07/ruby-openssl/ Who reads the value of ENV['SSL_CERT_FILE']? Hope this help

Categories : Ruby On Rails

Decrypt text iOS
You should not be decrypting sha1 hashes. They are designed to be one way encryptions! Rather, if you need passwords, let's say for authentication, you should have users enter password information, and then send it to the server where the server then hashes the text. It should then check the password you sent to the server (now hashed) against the version you had previously hashed before and return to your app a "success" message if it works. Since sha1 is consistently the same algorithm, it should match! Note: if you can only receive the pass phrases, and can't change the architecture of how you are managing passwords, you could do the same sort of thing by sha1 hashing in objective-c and comparing against the password.

Categories : IOS

how to encrypt and decrypt url in asp.net mvc
Not complete answer, but you may build/implement your logic using the technique shown at and my notes below that: http://haacked.com/archive/2010/02/21/manipulating-action-method-parameters.aspx/ Additional logic: Build encryption and decryption methods, which accept values. While creating the URL/ActionLink, encrypt values using the method and attach value, and while decoding the value, decrypt and set the values to parameters. (using technique mentioned in above link) You can also refer the project below to implement using URL Rewriting. https://github.com/sethyates/urlrewriter

Categories : Asp Net Mvc

How to decrypt C# code in php
The following checks should fix your problem. You need to have the same mode for encryption and decrytion.In php code you are using ECB mode for decryption.check if you are using the same ECB mode in C#. Generate the key and iv in the c# for encryption and use the same values for decryption.dont generate key or iv in php decryption code. Decode the base64 string before decrytion in php

Categories : C#

How do I decrypt once I have encrypted?
First get the encrypted string : final String encryptedString = Base64.encodeBase64String(encrypted) and then decrypt using: cipher.init(Cipher.DECRYPT_MODE, secretKey); final String decryptedString = new String(cipher.doFinal(Base64.decodeBase64(encryptedString)));

Categories : Java

Encryt in .Net and decrypt in AS3
Notice: use 16 char length for both Key and IV, ex: Key: 1234567890123456 and IV: 9876543210654321 Here is C# code public byte[] Encrypt(byte[] someData, string KEY, string IV) { //preparing byte[] keyBytes = Encoding.UTF8.GetBytes(KEY); byte[] ivBytes = Encoding.UTF8.GetBytes(IV); //here goes encryption RijndaelManaged rijndaelManaged = new RijndaelManaged(); rijndaelManaged.Key = keyBytes; rijndaelManaged.IV = ivBytes; rijndaelManaged.BlockSize = 128; rijndaelManaged.Mode = CipherMode.CBC; ICryptoTransform encryptor = rijndaelManaged.CreateEncryptor(rijndaelManaged.Key, rijndaelManaged.IV); byte[] result = null; using (MemoryStream memoryStream = new MemoryStream()) {

Categories : Asp Net

C++ AES OpenSSL
AES is a block cypher. It takes blocks of 16 bytes, and encrypt them into a block of 16 byets. If you try to use it with data whose length is not a multiple of 16, padding (usually random data) is added to round it up to a multiple of 16 bytes. You need to manage the length of the data yourself. Example: int encryptHelper(const string& msg, ...) { uint32_t msgSize = msg.length(); newMsg.push_back((msgSize >> 0) & 0xFF); newMsg.push_back((msgSize >> 8) & 0xFF); newMsg.push_back((msgSize >> 16) & 0xFF); newMsg.push_back((msgSize >> 24) & 0xFF); string newMsg(reinterpret_cast<const char*>(&msgSize), sizeof(msgSize)); newMsg += msg; return __aesEncrypt(newMsg.c_str(), newMsg.length(), ...); } int decrypt

Categories : C++

Decrypt array to string
You can use the atob and btoa functions. myArray = ["screen", "left_side", "left_side", "right_side", "left_side", "right_side", "left_side", "right_side"] btoa(JSON.stringify(myArray)) // "WyJzY3JlZW4iLCJsZWZ0X3NpZGUiLCJsZWZ0X3NpZGUiLCJyaWdodF9zaWRlIiwibGVmdF9zaWRlIiwicmlnaHRfc2lkZSIsImxlZnRfc2lkZSIsInJpZ2h0X3NpZGUiXQ==" You can then convert it back into the orignal array array = JSON.parse(atob(str)) If you include LZString (as mentioned in the comments), you can get shorter strings. var str = btoa(JSON.stringify(myArray)); // 132 characters var str = LZString.compressToBase64(JSON.stringify(myArray)); // 72 characters var str = LZString.compressToBase64(myArray.toString()); // 64 characters To uncompress, array = JSON.parse(LZString.decompressFromBase64(str)); fiddle

Categories : Javascript

decrypt using cryptojs not working
Thanks owlstead, I already figured that out it last couple of days. I raised this query in crypto-js thread, the problem was I was not specifying IV in crypto-js decryption, as in Ruby if you dont specify any IV it adds as IV. Below is working code var encrypted = {}; encrypted.ciphertext = CryptoJS.enc.Base64.parse(data.data); var decrypted = CryptoJS.AES.decrypt(encrypted, CryptoJS.enc.Base64.parse(BASE64_ENCODED_KEY), { iv: CryptoJS.enc.Hex.parse('00000000000000000000000000000000') });; console.log(decrypted.toString(CryptoJS.enc.Utf8)); This worked for me, this solution was provided to me yesterday by Jeff.Mott.OR (current cryptojs lead dev)

Categories : Javascript

Decrypt only alphas in a string
you may want to check out a different approach, resulting in a much simpler code: using a regular expression to catch all the letters and replace them. Something like this: import re encodedString = 'g fmnc wms' def decodeLetter(match): letter = match.group(0)[0] if letter in 'YZyz': return chr(ord(letter) - 24) else: return chr(ord(letter) + 2) print(re.sub('[a-zA-Z]', decodeLetter, encodedString)) Hope this helps!

Categories : Python

Decrypt file in parts
Consider using Cipher#update(byte[], int, int, byte[], int) instead of doFinal() for multipart operations. This will take care of part boundaries for you. The last part of the deciphered data can be obtained by calling the doFinal(byte[] output, int outputOffset) method.

Categories : Java

Encrypt iOS and Decrypt Node.js AES
Are you sure the same key is being used in both libraries? You say you took out the SHA-256 part in AESCrypt, how is the library using the password parameter now? The AES algorithm can only use keys of 16, 24, or 32 bytes in length. Your password is 16 bytes long, but did you change the corresponding parameter to 128 (instead of 256) in the encrypt function? Do you know how CryptoJS is using the key parameter? Are you sure it's being used directly, or might there be some processing (for example, hashing) before it's passed to the underlying primitive AES encryption function? What mode of encryption is the CryptoJS library using? Its documentation doesn't say. Given that it asks for an IV, it's probably CBC, but you would have to look at the source to know for sure. AESCrypt's documentatio

Categories : Javascript

Error when decrypt with Java
I'm having the same problem for decryption, using both MSCAPI and PKCS#11. I found that the P11RSAChiper implemented in SunPKCS11 doesn't regard the wrap/unwrap methods, and it uses encrypt/decrypt for this purpose, which in my case conflicts with underlying layer of security, where the private key is marked just for unwrap by the SmartCard profile.

Categories : Java

Decrypt string to number value
public string decryptScore(string s) { var firstDigitArray = new List<string>{ "f85au", "kt50e", "cmt5s", "v5072", "fc5i3", "56f7l", "7gj81", "yn90y", "5o3ko", "ntakn" }; var secondDigitArray = new List<string> { "hkym6", "xj97c", "54v6q", "nawf9", "9e1gp", "9gww9", "5oj5p", "0ba5t", "yizld", "bt064" }; var thirdDigitArray = new List<string> { "uku91", "rn2k4", "uuq78", "nkurt", "8kxqs", "9p7kc", "hd8x6", "57b6o", "7iucu", "do6bq" }; var fourthDigitArray = new List<string> { "0hdro", "0wqrc", "wa5ny", "857mg", "3f7ro", "kerph", "0mhw1", "tpb8f", "8rho3", "4hc11" }; var digitsArray = new List<List<string>>{ firstDigitArray, secondDigitArray, thirdDigitArray, fourthDigitArray }; string decryptedScore = ""; int scorelength = s.

Categories : C#

Encrypt XOR in Delphi / Decrypt in PHP
The problem was the UTF8 encoding. I changed it to first XOR after XOR I do Base64. And in Base64 in delphi I did: Input:= EncodeBase64(BytesOf(Input), Length(BytesOf(Input))); Instead of: Input:= EncodeBase64(BytesOf(UTF8Encode(Input)), Length(BytesOf(UTF8Encode(Input)))); Removing the UTF8Encode it was correctly decrypted in PHP.

Categories : PHP

How to Decrypt or Decode for this JavaScript
This is an atempt of script injection, the result of this hp_d11(unescape("fmawoglv,upkvg*%25>qap%25%22)%22%25krv%22qpa? %25%22)]gfkvmp]wpn)%22%25ocekagfkvmp,hq %25+9")) will be a document.write with a script path.

Categories : Javascript

encrypt and decrypt in php not working
base64_encode( mcrypt_encrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), $q, MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ) ); should be base64_encode( mcrypt_encrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), $var, MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ) ); What's $q? Should it not be $var? (in encryptIt) WORKS FOR ME: function decryptIt($data, $key) { $key = md5($key); $data = base64_decode($data); $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_CBC, md5($key)); $decrypted = rtrim($decrypted, ""); return $decrypted; } function encryptIt($data, $key) { $key = md5($key); $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_CBC, md5($key)); $encrypted = base64_encode($encrypted); retur

Categories : PHP

How to PHP String Obfuscation on Decrypt
As mario commented, the point of obfuscation is to make it extremely difficult for people to steal code. Respect that the original author didn't want you to see his/her code, and leave it at that. (And if you ARE the original author and have done this by accident-- sorry! Keep backups next time!)

Categories : PHP

How can i Decrypt this encrypting method in PHP
You can't decrypt it. MD5 is only one way. Two different strings can have the same output with MD5, so it's impossible to decipher the original string. About the only way to crack MD5 is if the password is a dictionary word or easy to guess and used without a seed. With a seed, it's practically impossible, especially if there's no way to guess what the seed is.

Categories : PHP

Vb.net Decrypt sha512 hash
SHA512 is not an encryption algorithm, it's a hashing algorithm. What this means is that the data that goes into it cannot be recovered from the generated hash. I'm sorry but there is no way short of using a rainbow table style lookup to get the original data back. There's a great post on the difference here on SO.

Categories : Vb.Net

How To Encrypt something in .NET and Decrypt it in Objective C
The simplest in your case (if you don't want to deal with cryptography) would be to take some PGP library and use passphrase-based (no openpgp keys) encryption. You can use key-based encryption as well, of course, if you need that.

Categories : Dotnet

Decrypt encrypted value outside of Laravel
The Laravel Encrypter class uses Rijndael with a block size of 256 bit for encryption which is provided by the Mcrypt PHP extension. The Encrypter class works using two simple methods, encrypt() and decrypt(). An example below: <?php $secret = Crypter::encrypt('some text here'); //encrypted $decrypted_secret = Crypter::decrypt($secret); //decrypted ?> Since you're asking how to do it "outside of Laravel": The encryption and decryption is done by the encrypter class. Laravel source is public and here's the relevant part: <?php public function encrypt($value) { $iv = mcrypt_create_iv($this->getIvSize(), $this->getRandomizer()); $value = base64_encode($this->padAndMcrypt($value, $iv)); $mac = $this->hash($iv = base64_encode($iv),

Categories : PHP

How to Encrypt/Decrypt using AES in WinRT?
Yes it is possible, but you should use the same: character encoding of the plaintext, such as UTF-8 mode of operation padding algorithm (optional) string encoding of the ciphertext, such as base64 encoding or the easier to debug hexadecimal encoding And of course the correct cipher (AES instead of Rijndael),symmetric key size and value and IV. Make sure you check each of the IO to these functions separately. Do not rely on defaults, set each value explicitly. Note that using ECB mode is insecure. Currently you are probably mixing CBC and ECB mode, which won't work. For secure communications you should use authenticated encryption or a MAC (using a second key).

Categories : C#

Decrypt PKCS#7 Message in C#
It is easy to check for the EnvelopedCms.ContentEncryptionAlgorithm.Oid.FriendlyName property to know which algorithm was used to encrypt the content. The encryption algorithm is chosen by the Outlook user from (Options -> Trust Center -> Trust Center Settings -> Email Security -> Encrypted Email -> Default Settings). Since the encryption algorithm is typically a symmetric algorithm, the KeySize, BlockSize, SymmetricKey, and Initial Vector are usually needed. The value for BlockSize is known from the algorithm. The KeySize could either be known from the name of the algorithm (e.g. AES256 means the KeySize is 256) or by checking the value of EnvelopedCms.ContentEncryptionAlgorithm.KeyLength. The SymmetricKey is given by assumption. The Initial Vector is found in EnvelopedCms.ContentEncrypti

Categories : C#

Encrypt in SQL Decrypt in .Net - How i made it
Answer: Created Certificate outside SQL: Change Directory to cd "C:Program FilesMicrosoftSDKsWindowsv6.1Bin" copy makecert.exe and pvk2pfx.exe to tempcreateCert C: empcreateCert>makecert -sv PrivateKey.pvk -n "cn=TestCertificate" TestCertificate.cer -b 01/01/2013 -e 01/01/2014 -sky Exchange created pfx file C: empcreateCert>pvk2pfx -pvk PrivateKey.pvk -spc TestCertificate.cer -po TestEncryption123 Yes, export the private key Include all certificates in the certification path if possible Export all extendend properties Set password: TestEncryption123 choose Filename for pfx file... ran this on SQL Server: USE master GO   CREATE DATABASE TestEncryptionDecryption GO   USE TestEncryptionDecryption   CREATE TABLE Encrypt ( intCol int, clearTextCol varc

Categories : C#

How to build OpenSSL for WP8?
here is what you have to do, go to this link and download the VSbuild, now put that into the source files downloaded from the OpenSSL website, the folder structure should look like this: apps bugs certs ..... vsbuild once that is done, open the solution, it should upgrade it to VS12, change the settings to a Windows Phone RT build, to generate DLL's there is no need to build *_lib*, so change the other projects, most changes you need to do are to libeay32, do not compile openssl project, just ignore that, start by building libeay32, and start making changes to the code, as there are some functions we don't have in WinRT, you can either #ifdef them out, or create your own functions, NOTE for rand_win.c change the functions to use rand_s and #ifdef most of the code there is,

Categories : Windows Phone 8

installing openssl on OS X
To prioritize your local copy over the system copy you need to add it to your shell PATH variable export PATH="/usr/local/ssl/bin:$PATH" If you want this to execute every time you start a shell just add it to your .bash_profile in your home directory. However, this is not going to fix your problem because Ruby would need to be recompiled against the new OpenSSL (we'll assume the updated root certificates file that comes with the new OpenSSL would hypothetically fix this issue). I'd recommend installing either rvm or rbenv and rebuilding ruby. Note that both of those tools would prefer you to install openssl via homebrew.

Categories : Osx

RSAPrivateKey openssl C++ ios
Did you generate the key? In C RSA_new() doesn't generate a key it only allocates the memory for the key. But I don't how it is in objective-C. char szModulus = "1162" ; char *szExp = "827655" ; RSA* rsa1 = RSA_new(); /* added code */ BIGNUMBER* exp = BN_new(); BN_set_word(exp, 17); RSA_generate_key_ex(rsa1, 1024, exp, NULL); /* until here */ FILE *fp; fp = fopen("/Users/ysi/Desktop/privateKey.pem", "wb"); PEM_write_RSAPrivateKey(fp, rsa1, NULL, NULL, 0, 0, NULL).

Categories : C++

Can't install OpenSSL 1.0.1e
My guess is that OS X has an older version of openssl in /usr/bin, and Homebrew places it's version in /usr/local/bin Try /usr/local/bin/openssl version Edit: Before you try the above command, run: brew link --force openssl

Categories : Osx

OpenSSL in Android
Here are some of the Helpful Links : How to use Open SSL in Android. For AES encryption take a look at javax.crypto package which android supports. javax.crypto supports AES algorithm as well. Here is the link for that javax.crypto in Android. Make sure you do some research before asking question. At least try to present what you have tried and be specific about your problem.

Categories : Android

OpenSSL 1.0.1 on Heroku
The solution to this problem is to create a custom buildpack. You need to build a version of Ruby linked against the correct version of OpenSSL that will run on Heroku's system. For this, you need to use either a local 64-bit Linux system or a Heroku buildserver. Vulcan has problems building Ruby specifically, so the best way to do this in the absence of an appropriate local machine is to use Heroku push from an empty directory with a source-based buildpack. Then you can extract the binaries from the resulting slug and use them with a much faster binary buildpack. I've posted my buildpack here. It is currently working and provides Ruby 2.0.0 with OpenSSL 1.0.1e.

Categories : Ruby

OpenSSL - LNK 2019
This can be problem with calling conventions. Please check the project setting regarding calling convention. OpenSSL compiles with /Gd option that means function will be of __cdecl calling convention. You can either change your calling convention to /Gd or prefix OpenSSL function signatures which you are using with __cdecl. I believe that this might help. This link explains how to change calling convention. Please confirm if this can help you.

Categories : C++

openssl encryption in c++ and php
Your problem is that you are not using CTR mode in the standard way. In init_ctr you are only copying 8 bytes of the provided IV and setting the rest to zero. If instead you use the whole IV, you will get the same result as the PHP code: //don't do this: //memset(state->ivec + 8, 0, 8); //memcpy(state->ivec, iv, 8); //do this: memcpy(state->ivec, iv, AES_BLOCK_SIZE); The lesson is that just because you found some code somewhere, doesn't mean you can copy-n-paste it without understanding what it is doing. This is especially true with crypto code. If you knew even the basics of what a block cipher is and how one works in CTR mode, you would have realized the problem with your code straightaway. Oh, important safety tip: When using CTR mode, never encrypt more than one messa

Categories : PHP



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