Questions tagged [decryption]
The process of decoding data that has been encrypted into a secret format.
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How does LastPass decrypt passwords?
I am a web developer, not a security expert, but I know a little bit about security because I need it as a web developer.
According to LastPass,
LastPass encrypts your Vault before it goes to the ...
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How to decrypt an AES block with a known key [closed]
Suppose I have an AES CBC 256 encrypted string with the key, how do I go about getting the original message?
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padding problem in sha-1 hashed password
For my own understanding of Websphere LTPA keys, I'm running this Java code, which works correctly when using the author's Base64 encoded, SHA1 hashed password:
String ltpa3DESKey = "...
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What can be done to decode/recover encoded PHP files? [duplicate]
We had a former employee handling one of our servers where XAMPP was used to host some PHP based websites.
Now that employee left the organization due to some management issues. Yesterday we needed ...
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Basic PGP Encryption / Decryption
I am working on a project that requires the basic encryption/decryption of a message. I generated private/public keys with my email and no password. The pgp public key as well as the private key, ...
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What is the best way to represent heavy hash decryption for a hacker movie? [closed]
As a school project, I'm making a video about hackers across the time and there is this one scene where my character enter a big hashed key in a linux based terminal and I need to visually represent ...
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Is OpenVPN actually forwarded over TLS?
I'm investigating behavior of SSL decryptors on OpenVPN connections to port 443 and I noticed that device I use as decryption proxy doesn't recognize OpenVPN connections as TLS thus doesn't decrypt ...
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Check if a password for encrypted ms office document is correct
I am writing a Python program to decrypt a MS Office encrypted document.
Referencing This GitHub Repo for reference.
Now what I want to do is try bunch of commonly used passwords against the document....
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Decrypting SSL session using pre-master for any PCAP/WinCAP [closed]
i am trying to Decrypt SSL session using pre-master key for any PCAP/WinCAP HTTP plain-text. is there any idea how i can use/decrypt my pre-master key to decrypt SSL session. i am using pcap analyser.
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How to decrypt a text with substitution cipher? [closed]
I recently got a file which I had encrypted with substitution cipher a long time ago.
I went to crack down the key and almost got it.
But I encrypted it not just with alphabets but also with numbers ...
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Fail Decrypt Botan built TLS using Wireshark
When i use Wireshark to decrypt an Openssl sample(by importing server private RSA key) https://github.com/matthewarcus/ssl-demo it works perfect.
And i want to do the same thing with Botan CLI tools(...
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What is Megan-35 encryption?
There are a lot of websites offering online Megan-35 encryption/decryption. Surprisingly, I haven't been able to spot out any resources detailing the underlying algorithm. Can anyone provide any link ...
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Is it possible to Decrypt two different encrypted text to the same identical text value?
I know that in Hash Collision theory, you end up having a collision if two different text strings results into being the same hash values. But my question here is related to encryption.
1) I am ...
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How secure is encrypting & decrypting strings with OpenSSL? [closed]
I am wondering how secure it is to encrypt and decrypt strings using OpenSSL using Salts and an Initialisation Vector. If the salt and initialisation vector are both going to be stored in a database ...
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Decrypting files that were encrypted with EFS?
I was wondering if there was a way to decrypt files that were decrypted with efs. I have an external drive with encrypted files that were taken from an old computer. I have the certificate and I ...
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Is this algorithm safe for encryption? (Cryptography Algorithm is provided)
Jasoos (Cryptography Algorithm)
I am working on encrypting and decrypt web application. I have built an algorithm that uses 24 bits long key to encrypt/decrypt the message.
Review this algorithm and ...
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Encryption key split into parts and stored in different places
Say, I have encrypted data in a database. How wise is it to break a secret encryption key into several parts and save each one in a different place?
Namely:
key1 = get_key1_from_remote_server()
...
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Is there a good way to use to find out how this was encrypted [duplicate]
Ok, so this is a very basic cryptography question. I have captured a message from an Android app to a server. I believe this app may be stealing information from the phone it is on so I'm running it ...
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Encrypt content such that it can decrypted only by a specific application
Is there a key management approach for the following scenario:
Customer Alice uses an application S1 to generate a file. The contents are expected to be encrypted such that it can only be decrypted ...
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How to synchronize a nonce between two participants?
I am currently working with a symmetric algorithm which requires a nonce for encryption, and logically for decryption as well.
However, I am a bit confused about how I would go and synchronize the ...
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Why don't digital signatures reveal the senders Private Key
As I understand it, Digital Signatures involve the 'signage' of a message using the senders Private Key, and its validation by the recipient using the sender's mathematically-related Public Key.
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Decrypt data with known text
So I have an encrypted text file that I know contains the phrase "potatoes are awesome" Is there a way for me to decrypt the text based on me knowing that phrase and the encrypted data? (I also don't ...
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Uncovering encryption codes [closed]
What is the complexity level of finding an Encryption code when the source document and the encrypted one are available? In practical terms: Malware in the computer sends a document to the TPM and ...
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Can I force app-server communication not to use DHE/ECDHE?
I have downloaded an .exe app that communicates with server by use of TLS.
I want to look to the data being transferred.
In wireshark I see that when establishing connection they (app and server) ...
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How do you find SSL Keys on Android (to decrypt SSL on WireShark)?
I'm using an Android Emulator on my PC, then logging into some apps (while running WireShark), and now I'm trying to figure out how to decrypt the SSL traffic.
I understand that I need to find some ...
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How can I decrypt a Word document that I know the password to without opening it in a word processor?
I got a question that I thought would be simple but it is proving to be more difficult that I thought it would be.
I got a malicious password protected Word document that I want to analyze for IoCs. ...
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Has anybody successfully decrypted their files after paying the WannaCrypt ransom?
WannaCrypt is a shot heard 'round the world, for sure.
I have seen news articles saying that people have paid more than $20,000 in ransoms. Here's one from Krebs: Global ‘Wana’ Ransomware Outbreak ...
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Is is possible to decrypt 802.11 for WPA enterprise?
So it is fairly trivial to decrypt 802.11 for WPA-PSK as explained in this link https://wiki.wireshark.org/HowToDecrypt802.11. Is it then possible to decrypt the same way for WPA enterprise?(Assuming ...
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Where are the symmetric keys stored when using ssh?
The use case is this: Imagine you have two systems, A and B. If system A ssh's into system B and begins transferring over files back to A, I want to be able to decrypt the content of the message being ...
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Are these claims about modern CPUs and AES decryption true?
Because of the format this question is in, it was a toss up between posting it to this site or Skeptics, but I went for here in the end because I'm probably more likely to get a definitive answer.
...
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Wireshark decrypt and save wireless packets from command line [closed]
I have a question that I can't seem to find a complete answer for. This may not be something that is possible, but I am hoping someone will have a solution.
At my work, we process wireless sniffs in ...
user143532
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How does this site decrypt SHA256 hashes? [duplicate]
I thought sha256 is impossible to crack (so far).
But I saw a website, that could decrypt my hash.
So is this because they store known hastes in a database or
do they really decrypt hashes?
Here's an ...
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How long does RSA encryption/decryption generally take?
I am going to encrypt and decrypt a base64 that's an image. Now it needs to be fast. How fast does it take to encrypt and decrypt a file with RSA-OAEP for example?
And if it is too slow what is a ...
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Is the entire ciphertext needed for decryption with key?
Lets say that you have they encryption key, but you don't have the entire cipher-text. You just have a part of it, say 60%.
Is there a way to possibly decrypt that part of the cipher-text? Does it ...
user119042
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How to store sensitive data
I have made a program which has sensitve data hardcoded into it. Let's imagine that sensitve data is the password for my safe at home.
I realized that it is pretty unsecure to have the data ...
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Crack AES ECB mode C++ [closed]
I have this little piece of code for encrypting:
typedef unsigned char byte;
int encrypt(char *filename) {
byte key[ 16 ];
int i;
memset( key, 0x00, 16);
for(i=0;i<=sizeof(*key);...
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When I receive data in this scenario, how many times is it encrypted?
Right now I'm using a Web browser under the following circumstances:
I am making this post over HTTPS
I am connected to a password-protected Wi-Fi network with WPA/WPA2, EAP-PEAP, and MSCHAPV2 ...
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Is it secured to store the encrypted key in the database (encrypted by other cipher)?
I want to improve the encryption flow used by my application.
Today I use the AES cipher while its key and its IvBuffer are hardcoded in the code.
I know it is not secured and I want to improve this.
...
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Memory dump from KVM snapshot, possible?
When we have a dedicaed server, noone can access to RAM data except the OS (for example Debian what working on).
If someone want to get a RAM dump, without accessing to system, they need to freeze ...
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How can I decode a message that was encrypted with a one-time pad if I have the key?
Can I decode a message that was encrypted with a one-time pad if I have the key used to encrypt it? If so, how?
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HDD password cracking [closed]
I recently changed the decryption key to my WD My Passport HDD two days ago. Before I left for the weekend, I tested to make sure that the key would work. However, the password that I set, which got ...
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Encrypting text file with AES 256 instead of password manager
I'm starting to have a big list of passwords I need safely stored. I was looking at password managers like LastPass, but these always seem to be targetted by hackers and have been compromised before.
...
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How hard is it to break an 8 digit pin of AES 256 encrypted external sata enclosure?
I am looking at external sata enclosures for 2.5" drives, there are some with keypad on them and protect the data with pin that is usually limited to around 8 digits. Drive is protected with AES 256 ...
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Ransomeware ziptox1 fix
Recently the virus called Ransomeware affected my system and changed my database file extenstion from .mdf to .mdf.ziptox1 and showing as files are encrypted
Now I am not able to run the database, ...
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Affected by Marlboro Ransomware (".oops" extension) - Which decryptor to use to decrypt the files?
My friend got infected by "Marlboro" Ransomware (description of the nasty thing: http://sensorstechforum.com/marlboro-ransomware-remove-restore-oops-files/).
I have researched online, and a way to ...
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Is it possible to decrypt half of a TrueCrypt file container if the other half of the data is missing?
Let's say we have half of a TrueCrypt file container (e.g. download was interrupted). If we know the password, is it possible to open it and get half of the data? The original container has 10 files, ...
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Decryption After Public-Private Key Pair Revocation
Once a key pair has been revoked, is it still possible to decrypt messages that were previously encrypted?
What if the key is / isn't protected with a strong passphrase?
From what I understand, it ...
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Why can't SHA256 be decrypted? [closed]
From many forums I saw that the SHA256 data cannot be decrypted? If that's really true then hows is the data verified?
Whats the use of just encrypting the data?
The same question goes for the ...
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How to determine what type of encoding/encryption has been used here? [duplicate]
Is there a way to find what type of encryption/encoding is being used? For example, I am working on php script they using this encryption to give the output URL to android apk
for example this out ...
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Is it possible to break any encryption by knowing the data that was encrypted? [duplicate]
I have very basic Idea about encryption/decryption and was wondering if we can break any encryption using this method. By break I mean to retrieve the encrypted data and the key.Possibly finding ...
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