Questions tagged [decryption]
The process of decoding data that has been encrypted into a secret format.
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Decryption of TLS/SSL Traffic With the debug file of fiddler on wireshark
I wanna decrypt some packets on Wireshark, when I search the Internet, some people were said to use SSLKEYLOGFILE environment, I do the stuff, but it looks like that chorme doesn`t update that file ...
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1answer
181 views
How do I decrypt a .dmg image if I know details about the password?
I encrypted a folder and forgot to save the password.
I remember how long I made the password (40 characters)
I know the last two characters (40)
I don't know the first 38 characters but I do know ...
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0answers
30 views
How to decrypt wifi traffic in realtime and write it to file with Tshark?
I have Wireshark setup to decrypt and display packets in realtime. But I need to have them written to file in realtime also. Someone suggested Tshark, but I can only get it to write to file and not ...
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0answers
38 views
How long will it take to bruteforce a password protected RAR? [duplicate]
How long it takes to recover a rar password consisting of 13 character with uppercase ,lowercase letters,digits,symbols ?
Assuming the use of a supercomputer or any other available fastest facility
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1answer
69 views
For encrypted chat app, how can I store sent messages so that they are encrypted but still can be viewed by the sender?
Actual implimentaton will be in android but this is more about general security than actual implimentaton details. I'm making an end-to-end encrypted chat app and I know that in order to send ...
2
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1answer
86 views
How to decrypt Diffie-Hellman encryption in WebRTC?
I have installed a WebRTC server application, which is designed for Contact Center solutions: communicates with internal PCs in pure RTP (agents), and with external PCs (customers) using encrypted ...
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2answers
133 views
How did Google “decode” my Gsuite password? [closed]
Google has recently admitted they were storing "G Suite" users' passwords un-hashed on their systems.
But if a hashed password was transmitted to Google when I logged in to my account then how did ...
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0answers
63 views
Why does OpenSSL fail to decrypt when the key is too large?
I have the following groovy script:
cmd1 = "echo ${really_long_key}"
ssl_cmd = "openssl aes-256-cbc -md md5 -nosalt -a -pass pass:${encryptPassword} dec"
def process = cmd1.execute() | ssl_cmd....
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1answer
105 views
Android leaking app analysis
In my thesis I'm trying to analyze leaking private data on Android apps. I noticed that the vast majority of data is encrypted.
How can I analyze this data without decrypting it?
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0answers
58 views
TPM 2.0 Bus Encryption / Decryption?
It seems that in TPM 2.0 a call to TPM2_StartAuthSession() is able to start a decrypt/encrypt session. However, the caller forwards all the key generation material to the TPM in plaintext, and then ...
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1answer
61 views
encrypting file and user have public key to decrypt in barcode [closed]
I want code very secure system and I need some answers and help.
Is this secure if encrypting file and it is possible decrypt with barcode/QRCode where is decryption key to view it.
I've thinking of ...
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2answers
246 views
Intentionally slow decryption
We need to store the user ID of authors of messages in a database.
It should be possible to find an author of a problematic message i.e. on police request in minutes, but it should be very hard to ...
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0answers
32 views
Decrypting EFS files
I'm learning digital forensics and have been given a Windows Vista image with a bunch of files encrypted using EFS. The image has been sufficiently mangled that it'll never boot, but I have managed to ...
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1answer
84 views
Microsoft Bitlocker Decryption interrupted. Cannot decrypt again
I've locked on of my USB drive with BitLocker. When I was decrypting(removing BitLocker), my PC went off due to power cut in the halfway of decryption. Now, when I'm trying again to decrypt using ...
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1answer
96 views
Cross platform OpenSSL aes encryption
I encrypted a file by using the following command from a stackoverflow answer:
openssl enc -in file_name -aes-256-cbc -pass stdin -out file_name.aes;
I can decrypt this file by running:
openssl enc ...
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0answers
164 views
How to crack encrypted Android SQLite DB? [closed]
I am testing an android app which has DB encrypted (AES-256), I extracted it from system files /data/data//databases, I have following doubts,
How do we ensure that DB is encrypted properly and it is ...
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1answer
112 views
Decrypting AES-128-CBC leads to first block being correct, the rest corrupt
I'm currently investigating a piece of software which encrypts it's files with AES-128-CBC.
From disassembly it is truly known that the algorithm used is correct (log messages plus calls to the ...
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3answers
302 views
Losing the Initialization Vector in Cipher Block Chaining
I have written a message and encrypted it using cipher block chaining.
What will happen if the receiver loses the Initialization Vector, or doesn't receive at all?
0
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1answer
122 views
I need to compute a string whose SHA256 hash matches a given prefix. How should I approach it? [duplicate]
Is there any (more efficient) way for computing any string with a given prefix in it's SHA 256 hash? And how probable am I to stumble on such a string if I brute force?
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1answer
67 views
Need to decode, don't have key [closed]
So my friend gave me this monster of a code but I dont know WHAT it is and they said it can be solved as is ... I've been working on it for a week and its making me mad. Got any ideas?
...
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2answers
313 views
Best way to know the algorithm used for a password encryption
I have the following password captured using sqlmap-
$2a$08$9eaKUtKdFV8fuOAx0sfr4emrG1aHzGeNsn/rVdW243nw6Ktt.Uc0O
Now, I don't know how to decrypt this password because I don't know which ...
3
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1answer
187 views
What happens to PKI once quantum computers can break encryption?
They say that public key infrastructure or PKI uses very complex encryption. What if that encryption breaks one day when quantum computers complete? What if they decrypt all private messages and data? ...
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1answer
196 views
Java Code for Pass Encryption/Decryption [closed]
I want to save an encrypted password (the encryption may be produced manually or using java code, and the encryption technique type does not matter), then the java code will read the encrypted pass ...
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0answers
32 views
How to decrypt an unknown string with unknown key? [duplicate]
I'm trying to decrypt a curtain encoded string, but not sure which encoding, or which key was used to encode it.
Is it a lost cause? or maybe someone here could assist me?
The string was ...
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2answers
59 views
What program can Decrypt specific a Folder/Files during Windows Boot/Loading? (Windows)
I've been looking into Encryption of my data for some time now; I've decided to move ahead with VeraCrypt for encryption all of my partitions (I have 2 disks in 1 laptop) except for the OS (C:) ...
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4answers
252 views
If I have the input and output, can I know the encryption technique?
I have a program that can encrypt text, I tried to discover the encryption that is used in this program and could not figure it out, knowing that if the plaintext is P and the encrypted text is C, if ...
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1answer
93 views
Chain of causality in Equifax breach (expired certificates disabling IPS capabilities)
I am researching the Equifax breach described here:
https://oversight.house.gov/wp-content/uploads/2018/12/Equifax-Report.pdf
Apparently the attack went undetected for a long period of time and the ...
2
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0answers
2k views
Ransomware with .adobe extension
It is possible to decrypt file with .adobe extension ?
File after encryption look like this : filename.id-5735353.[email@example.com].adobe .
I did a little research and found information about "....
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2answers
381 views
Brute-force attack to exe file [closed]
I have an encrypted file and the program.exe through which it was encrypted. When I want decrypt file, I need to know the password with which the file was encrypted. Can you help me some tool for ...
0
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3answers
74 views
Transfer encrypted objects and decrypt in browser
Im building a webclient where a tensorflow model needs to run in the browser. I would want the Model to be protected so that it cant be just downloaded off "Developer tools". The model has to be ...
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1answer
41 views
Decryption only on specific Device
Let's say I have a closed user group and want to send them encrypted data over an insecure channel. I have previously had access to their devices and could have installed a decryption key. Is there ...
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0answers
179 views
JA3 and its usefulness
JA3 was created by people at Salesforce and it is a way of creating TLS/SSL fingerprints due to the fact that negotiation is done in the clear. According to JA3, these fingerprints give someone the ...
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2answers
782 views
What are the considerations when migrating from Bitlocker to Veracrypt?
We are currently evaluating migrating from BitLocker to VeraCrypt. Based on the most recent update to VeraCrypt, there appears to be support for UEFI/GPT. Additionally, it seems that decryption isn't ...
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1answer
98 views
What is the algorithm for ARJ encrypted files?
I came across some password protected ARJ files.
What is the algorithm for ARJ encrypted files ? How to decrypt them ?
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1answer
682 views
openssl problem decrypting passhrase-encrypted file using the derived IV, Key and Salt
So I followed openssl: recover key and IV by passphrase and managed to retrieve my salt, key and IV using -P in openssl.
openssl enc -aes-256-cbc -in encrypted -pass "pass:password" -out m.jpg
this ...
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2answers
225 views
AES-256 decryption after key destruction. Possible or not?
Can AES-256 be decrypted if after the encryption process you destroy the key that must be used to decrypt the data, is it possible?
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0answers
261 views
How long until quantum computers are able to decrypt RSA using Shor's algorithm? [closed]
Based on this question:
How many qubits are needed to factor 2048-bit RSA keys on a quantum computer?
It's going to take 20-30 years for quantum computers to reach that state but some people are ...
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3answers
1k views
Passwords: store encrypted, view in plain text
I've already asked that question at stackoverflow but i was informed it is a bit too broad and relies more in here instead. So let me just copy and paste what i asked there:
I have a security related ...
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1answer
473 views
Save decrypted pcap or decrypt on reading with rdpcap
I created a small program with runs command:
tshark -i2 -o wlan.enable_decryption:TRUE -o "uat:80211_keys:\"wpa-pwd\",\" Passphrase:SSID\"" -w test.pcapng
This creates the file test.pcapng, but it ...
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2answers
65 views
Make application use encrypted credentials from a file [duplicate]
I am new to cyber security but I am working on a project where I need to use it and I don't know where to start.
The application I am working on connects to Jira to retrieve data and generate ...
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1answer
66 views
What are `dd` input blocks? [closed]
I'm looking for a semi-technical explanation of "input blocks". When creating encrypted containers we use dd with "count=n", but I'm not sure of the difference between "count=0" and "count=1". The dd ...
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2answers
179 views
Is it safe to encrypt my password with the password itself?
I'm using a password to encrypt some data. However, upon decrypting, I want to check if the entered password is correct. In order to do so I encrypt the password itself. Then upon decrypting, I check ...
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1answer
94 views
Encrypted log entries authorization
We have a database table of encrypted log entries, each encrypted entry containing information about the user who created the entry. The entry is encrypted with the encryption key of the particular ...
1
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1answer
144 views
How to encrypt text so that when decrypting there are 2 (or more) decryption keys with potentially results?
I would like to encrypt text and then publish on the public blockchain (STEEM).
(I like STEEM because it is easy to use and allows me to store the whole content, rather than just hash when using ...
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3answers
97 views
Is there is a way to share encrypted data and allow decrypt only and prevent re-encryption?
The case is that I need to share data encrypted with customers allow them to only decrypt it.
The idea is by the low we are not allowed to keep a copy of this shared data
while the customer have to ...
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0answers
164 views
Problem using padding oracle attack on this base64 - url coded message (AES CBC 256)
I'm supposed to write a script that will get the plaintext of a message which is firstly coded in base64, then URL coded (encoded ciphertext in AES-256-CBC). Padding is used as well such that the ...
4
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1answer
1k views
gpg does not require passphrase to decrypt
Suddenly the behaviour of gpg has changed and my world crumbles.
I have several keys, all but one for testing purposes. The one is my personal key. Up to now I have been able to encrypt with this ...
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1answer
264 views
Identify Encoding type - decoding base 32/64 [duplicate]
I am getting into CTF's and I am attempting to solve a cryptography riddle. I am Having trouble Identifying the encryption type or format of the text in the file.
I have been given a link to download ...
10
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1answer
12k views
Can I decrypt my SD card with another phone?
I found this answer in an old 2016 post, and I have the same problem.
I encrypted my SD card and when I unencrypted my phone, I didn't realize I needed to unencrypt the SD card first. To be honest, I ...
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1answer
645 views
How to decrypt Kwvnqlmvbqitqbg? [closed]
How would I go about to decrypt the above string, if I do not know what cipher was used?
