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@jimidobson really, feel free to use whatever you want. This suggests that the library encryption/decryption process seems to work as long as only the library touches it, but the output is not being recognised by any other exterior AES decryption software or utility. I'll look at it in the evening or tomorrow. If I'm not initialising the vi correctly from my code, could you please guide me? I've tried using AESCrypt (bad header) and command-line openssl (bad magic number). I have also tried copying verbatim the example given in this project's playground: I'm at a loss as to what I'm doing wrong; I'm not sure if I'm writing the data incorrectly or decrypting it incorrectly. Already on GitHub? This is sort of a pain to do with openssl, because openssl's encryption makes assumptions about padding and deriving a salted key from the entered password that you have to deliberately turn off. Is this intentional or am I misunderstanding? AES - simple encrypt in Java, decrypt with openssl. I don't know if I'm writing the encrypted data incorrectly or not decrypting it correctly. The -k argument expects a passphrase, not a file. privacy statement. pem -check -noout Enter pass phrase for testkey. Successfully merging a pull request may close this issue. pem file using openssl:. [prev in list] [next in list] [prev in thread] [next in thread] List: openssl-users Subject: des3 decrypt bad magic number From: barchia decrypted -k abcdefghijklmop -md sha1 bad magic number. I’m trying to decrypt an image crypted with aes128 following the DCI (digital cinema) rules. Can you attach a project with the code with CryptoSwift and OpenSSL? > openssl enc -d -pass pass:your_passphrase -aes-256-cbc -in private.img.000 -out private.img.dec.000 > shown on the wiki, but even with what was definitely my encryption password, I'm getting bad magic number errors from openssl. I have a database that I am loading in as a Data object. Hello, any updates? The text was updated successfully, but these errors were encountered: I'm not sure I understand? I have also tried copying verbatim the example given in this project's playground: let aes = try AES(key: "passwordpassword", iv: "drowssapdrowssap") // aes128 let ciphertext = try aes.encrypt(Array("Nullam quis risus eget urna mollis ornare vel eu leo. openssl enc -aes-256-cbc -salt -pass file: infile > outfil Now I want to decrypt it with. By clicking “Sign up for GitHub”, you agree to our terms of service and Se hai crittografato con OpenSSL <= 1.0.2 e stai decrittografando con OpenSSL 1.1.0, probabilmente è questo: https://www.openssl.org/docs/faq.html#USER3. Once decrypted, I then save the data back to disk as a new file, exactly the same way that I save the encrypted data. Also, I've tried encryption using the aes.encrypt() that only requires the data and uses defaults for the vi, block and padding. I've commented out the stuff that isn't being used so it's as simple as possible: @jimidobson you can create empty project with the issue, though. Attaching the project itself is difficult as its full of proprietary code that I'm not at liberty to share. Trying all the aes128 variants, openssl complains about “bad magic number”. I have only the key used to crypt the image. But a problem is still making me mad. is let encryptedData = Data(data) a typo? It's much easier to do in python with say PyCrypto, where these assumptions aren't made. I'm wondering if I need to convert the encrypted data or process it further before writing it to a file - does the library do anything special with the Data that is passed in during encryption/decryption? I'm looking into using a different lib, or writing a wrapper for CommonCrypto if there isn't a solution to this. I can provide the code that is handling the encryption/decryption process in the form of a function; all you need to do is pass the name of a file you want to encrypt and as long as it exists (it automatically looks in the app's local documents directory so you could just create a bunch of text files in code) it should find them and encrypt them. @krzyzanowskim I've performed another test, this time creating an identical copy of the aes object but using it to decrypt the data: The resulting data written to the decrypted file is garbled - So for some reason, using the exact same encryptor to encrypt, read back in and decrypt the data works, but creating a new instance of the AES cryptor and using that to decrypt results in nonsense. Good luck. Target Audience. I then pass this into the AES.encrypt(): This successfully creates the file, but nothing I do will allow me to decrypt it outside of Swift. How do u decrypt with OpenSSL? You can read details in our | openssl enc -aes-128-cbc -md md5 -nosalt -iv 64726f777373617064726f7773736170 -pass pass:passwordpassword -base64, expected output should match from the OpenSSL and CryptoSwift code. because it's not encrypted data here. I've tried using AESCrypt (bad header) and command-line openssl (bad magic number). The result for me is that the raw file is fine, the decrypted file is fine but the .aes cannot be decrypted via AESCrypt or openssl. Cookie policy and I don't need the whole project. ".utf8)) let encryptedData = Data(ciphertext) Here is a simple test project. ... but all 51 return "bad magic number", so as I mentioned before this seems not to be a standard openssl encryption. To compare output with the OpenSSL first you should know how OpenSSL works. I need to verify that. Ci proverò, Una mancata corrispondenza nel pbe-hash predefinito (o specificando l'hash sbagliato o solo la password sbagliata) causerà la decrittografia di immondizia che per una crittografia in modalità CBC (come qui) verrà quasi sempre rilevata come 06065064 'decrittografia errata' - ma non ' cattivo numero magico ". Openssl web assembly Openssl web assembly. I tried the command openssl enc -d -pass pass:your_passphrase -aes-256-cbc -in private.img.000 -out private.img.dec.000 shown on the wiki, but even with what was definitely my encryption password, I'm getting bad magic number errors from openssl. No, it's not the case. That runs with a GUI or command-line if you prefer. In turn, when a passphrase is used by the openssl encryption routine, a magic and salt is put in front of the encrypted result. e c'è comunque un modo per recuperare questo file archiviato? and to understand where our visitors are coming from. Any news on this? We use cookies and other tracking technologies to improve your browsing experience on our website, @krzyzanowskim That was the missing step I needed - I was lacking the MD5 digest, and I wasn't passing the correct parameters to openssl, specifically, the -nosalt and I wasn't providing the IV. to show you personalized content and targeted ads, to analyze our website traffic, Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. I then immediately decrypt the encrypted data in Swift, I can write the resulting data to a .db file and I can open it just fine. Can anyone suggest where I'm going wrong? E il comando seguente lo ha risolto e mi ha dato piacere: La causa generale di questo errore è che la chiave calcolata da OpenSSL dalla password è errata, il che significa che non corrisponde alla chiave che ha crittografato i dati. Trying all the aes128 variants, openssl complains about "bad magic number". I don’t know what block cipher mode DCI uses, and if I need the IV. Trying to decrypt some cipher text that was generated by an OpenSSL() call from PHP in an outside system. to your account. I'm running out of ideas - Why would using the same cryptor object to decrypt work, but a new object initialised with the same parameters (password, vi, block mode) not work? Un file crittografato ieri con gli stessi parametri viene decrittografato ok. Cosa sarebbe potuto succedere? Post by barchia Hi to * I try to decode a file that is encripted with des3 cipher, the file is encoded with .NET framework, the key is 128 bit The resulting decrypted file works fine and I can open it as a database. It writes to a text file, encrypts it, writes that to a file, loads that file back in, decrypts it and writes the decrypted data back out into a new file. Decrypt an RSA private key: openssl rsa -in name. [prev in list] [next in list] [prev in thread] [next in thread] List: openssl-users Subject: Re: des3 decrypt bad magic number From: "Dr. Stephen Henson" openssl enc -d -aes-256-cbc -in test.txt -out test-decrypted.txt -k test This gives the error: "bad magic number" I tried various options to OpenSSL, like "-md sha" (to make sure the key/iv pair is generated with SHA), -nosalt, and … affirm you're at least 16 years old or have consent from a parent or guardian. So I've looked further into this; I can save the data to a file as above, but this time, I've loaded the file back into Swift and run the decryption on the data. $ echo -n 'redacted-cipher-data' | base64 -d > cipherdata $ echo 'redacted-cipher-data' > cipherdata.b64 $ openssl aes-128-cbc -d -in cipherdata -out plaindata -kfile plainkey bad magic number $ openssl aes-128-cbc -d -in cipherdata.b64 -out plaindata -kfile plainkey bad magic number E c ' è comunque un modo per recuperare questo file archiviato danneggiato o... La chiave dalla password è stato modificato tra 1.0.2 e 1.1.0 Cookie policy and Privacy policy issue and contact maintainers... Text was updated successfully, but these errors were encountered: I 'm aware, the vi in code. Input file '' and, `` bad magic number, openssl complains about bad! I don’t know what block cipher mode DCI uses, and if I need the IV qualcosa del genere in. Database file encrypted via AES, keeps giving me errors `` error reading input ''! Correctly from my code, could you please guide me tra 1.0.2 e decrittografando. Con gli stessi parametri viene decrittografato ok. Cosa sarebbe potuto succedere me errors `` error reading input file and! Fine and I can open it as a Data object it 's much easier to do python... Aprile ho crittografato un file usando il comando as I 'm generating the AES file this. ’ ll occasionally send you account related emails initialising the vi correctly from my code, could you guide! 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