Apparently, OpenSSL() does some things "behind the scenes" within the encrypt call with the password and/or iv (this is AES-256-CBC), and I can't figure out what. I don't know if I'm writing the encrypted data incorrectly or not decrypting it correctly. 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. Trying all the aes128 variants, openssl complains about "bad magic number". pem -check -noout Enter pass phrase for testkey. I'm having issues decrypting a database file encrypted via AES. I have a database that I am loading in as a Data object. OpenSSL 1.1.1b warning: Using -iter or -pbkdf2 would be better while decrypting a file encrypted using OpenSSL 1.1.0g Hot Network Questions Can a process run regardless of any shell? Trying all the aes128 variants, openssl complains about “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. Here is a simple test project. ".utf8)) let encryptedData = Data(ciphertext) 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. affirm you're at least 16 years old or have consent from a parent or guardian. Trying to decrypt some cipher text that was generated by an OpenSSL() call from PHP in an outside system. No, it's not the case. That runs with a GUI or command-line if you prefer. Uno dei motivi per cui questo errore può apparire, in una situazione diversa dalla domanda originale, è se stai crittografando usando un altro strumento diverso da OpenSSL, ad esempio crittografando in Java e decrittando usando SSL. The text was updated successfully, but these errors were encountered: I'm not sure I understand? In turn, when a passphrase is used by the openssl encryption routine, a magic and salt is put in front of the encrypted result. 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 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. Decrypt an RSA private key: openssl rsa -in name. Vedi la soluzione qui per Java: /programming/22610761/aes-simple-encrypt-in-java-decrypt-with-openssl/55884564#55884564. Ad aprile ho crittografato un file usando il comando. Good luck. 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. 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. 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. Any news on this? The problem is with the key. I can take a look at this. This and OpenSSL part. Then I unbind the sham driver and still got the bad decrypt message. Have a question about this project? 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. … Can you attach a project with the code with CryptoSwift and OpenSSL? privacy statement. I’m trying to decrypt an image crypted with aes128 following the DCI (digital cinema) rules. org> Date: 2006-09-11 23:44:41 Message-ID: 20060911234440.GA6764 openssl ! openssl aes-256-cbc -d -in hotmama.tar.bz2.enc -out hotmama.tar.bz2 enter aes-256-cbc decryption password: bad magic number E il comando seguente lo ha risolto e mi ha dato piacere: openssl aes-256-cbc -md md5 -in hotmama.tar.bz2.enc -out hotmama.tar.bz2 enter aes-256-cbc encryption password: Verifying - enter aes-256-cbc encryption password: You signed in with another tab or window. Thank you very much for you help, much appreciated . I don't need the whole project. Once decrypted, I then save the data back to disk as a new file, exactly the same way that I save the encrypted data. pem file using openssl:. and to understand where our visitors are coming from. Already on GitHub? Maybe I'm missing a step? Prova ad aggiungere il -md md5tuo comando di decrittazione. openssl enc -aes-256-cbc -salt -pass file: infile > outfil Now I want to decrypt it with. Cookie policy and ... but all 51 return "bad magic number", so as I mentioned before this seems not to be a standard openssl encryption. I'm generating the AES file via this library, not openssl (although I am attempting to decrypt it via openssl). If Id the entire process in reverse, i.e. 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. via command-line on Mac, you can run this in the terminal: openssl enc -d -aes-128-cbc -in encrypted.file -out decrypted.file, You can also download AESCrypt: https://www.aescrypt.com/download/. By continuing, you consent to our use of cookies and other tracking technologies and @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. By clicking “Sign up for GitHub”, you agree to our terms of service and Solo un file danneggiato, o uno crittografato con, Nel secondo comando, non stai decodificando (, /programming/22610761/aes-simple-encrypt-in-java-decrypt-with-openssl/55884564#55884564. Is this intentional or am I misunderstanding? I need to verify that. Also, I've tried encryption using the aes.encrypt() that only requires the data and uses defaults for the vi, block and padding. It's much easier to do in python with say PyCrypto, where these assumptions aren't made. - I try to decrypt it with OpenSSL: > 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 … Attaching the project itself is difficult as its full of proprietary code that I'm not at liberty to share. Can anyone suggest where I'm going wrong? Hello, any updates? because it's not encrypted data here. Sign in base64 | openssl enc -d -a -aes-256-cbc > decrypted -k abcdefghijklmop -md sha1 bad magic number. Thanks. If I'm not initialising the vi correctly from my code, could you please guide me? Privacy policy. | openssl enc -aes-128-cbc -md md5 -nosalt -iv 64726f777373617064726f7773736170 -pass pass:passwordpassword -base64, expected output should match from the OpenSSL and CryptoSwift code. I don’t know what block cipher mode DCI uses, and if I need the IV. Openssl web assembly Openssl web assembly. L'hash predefinito utilizzato per generare la chiave dalla password è stato modificato tra 1.0.2 e 1.1.0. I hope that help you in your adventure. But a problem is still making me mad. Let's build CryptoSwift code and corresponding OpenSSL command: now you can compare the output with OpenSSL command: echo -n "Nullam quis risus eget urna mollis ornare vel eu leo." AES - simple encrypt in Java, decrypt with openssl. I'll look at it in the evening or tomorrow. As standard openssl is used for encrypting the files, you can use it to decrypt your files after you download the files using other utilities without using a NAS. Target Audience. [prev in list] [next in list] [prev in thread] [next in thread] List: openssl-users Subject: des3 decrypt bad magic number From: barchia 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 We use cookies and other tracking technologies to improve your browsing experience on our website, i trying decrypt aes-256-cbc , keeps giving me errors "error reading input file" and, "bad magic number". to show you personalized content and targeted ads, to analyze our website traffic, Is the 5 MB static resource size limit 5,242,880 bytes or 5,000,000 bytes? @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. Un file crittografato ieri con gli stessi parametri viene decrittografato ok. Cosa sarebbe potuto succedere? > 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. 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 ". We’ll occasionally send you account related emails. The resulting decrypted file works fine and I can open it as a database. Error in decryption OpenSSL encrypted file, CryptoSwift produces different output to OpenSSL, IV is derived from the password if not given, MD5 digest is used for key derivation by default. To compare output with the OpenSSL first you should know how OpenSSL works. The same issue occurs. I'm looking into using a different lib, or writing a wrapper for CommonCrypto if there isn't a solution to this. The -k argument expects a passphrase, not a file. is let encryptedData = Data(data) a typo? grazie temevo che potesse essere qualcosa del genere Siamo in una situazione insolita che vuole ripristinare qualcosa di così vecchio. 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. I've tried using AESCrypt (bad header) and command-line openssl (bad magic number). Sign up for a free GitHub account to open an issue and contact its maintainers and the community. to your account. 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. [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" decrypted -k abcdefghijklmop -md sha1 magic! Decrypted -k abcdefghijklmop -md sha1 bad magic number ) itself is difficult as its full proprietary... Code that I 'm not initialising the vi in my code above what... To share having issues decrypting a database file encrypted via AES attaching the project itself is difficult as full! Code, could you please guide me insolita che vuole ripristinare qualcosa di così vecchio aggiungere -md. Maintainers and the community ' è comunque un modo per recuperare questo file archiviato difficult. 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Errors were encountered: I 'm not initialising the vi in my code above what! How openssl works qui per Java: /programming/22610761/aes-simple-encrypt-in-java-decrypt-with-openssl/55884564 # 55884564 - simple encrypt in,... 'Ll look at it in the evening or tomorrow size limit 5,242,880 bytes 5,000,000. Liberty to share stessi parametri viene decrittografato ok. Cosa sarebbe potuto succedere sham driver openssl decrypt bad magic number got... It with | openssl enc -aes-256-cbc -salt -pass file: infile > outfil Now I want to it!, you agree to our terms of service and Privacy policy enc -aes-256-cbc -salt -pass file infile.