Questions tagged [decryption]
The process of decoding data that has been encrypted into a secret format.
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Safety of Encryption Keys
I'm trying to figure out the best way to encrypt passwords for a forums site I'm working on.
I've decided I'm going to use an encryption such as blowfish. From my understanding, you have a key, and ...
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Best way to store client side Encryption keys
I have different client applications running on different OS (iOS, Android, Windows Desktop, Windows Phone, Mac, Windows Store -All Native Apps-) I have to decrypt (AES-128) some files (thousands of ...
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Secure Software Architecture
I am designing a software architecture and i need some suggestion and clarification on few issues.
This will be a server side RESTfull API for accessing data and multiple mobile/desktop client to ...
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How to read password from Windows credentials?
What is the cipher used by windows Credential Manager to generate credentials backup files (*.crd)?
With a backup file from Credential Manager and the password used to created that backup file is it ...
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Is it possible to crack ransomware encryption if I have the original file?
Is it possible to crack ransomware encryption if I have 2 versions of a file: before and after the encryption? Are there any tools for such a thing?
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Decrypting SSL traffic for Security Onion at or before the interface
I have Security Onion installed and doing full packet capture on my home network. I also have a firewall (pfSense) which does my routing. I have Security Onion sitting just behind my firewall and ...
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Brute force time estimation - random sequence
I would like to ask if there are 2^1000 possibilities to choose from, how long would it take go through them all on average? (in terms of min, hours or years)
Note: This is not necessary related to ...
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What will happen if my GnuPG passphrase is discovered?
Hypothetically, should I be concerned if someone has my public key and knows my passphrase? Will they be able to decrypt messages sent to me?
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Check HMAC after completing decryption or before?
I have written a piece of software that symmetrically encrypts big files (multi-megabyte). Plaintext is encrypted, after the encryption the HMAC is calculated and written into the header of the file. ...
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How can I recover my encrypted data from a Sandisk Secure Access [closed]
I had saved my all important and personal data on sandisk secure access 2.0 on 16gb pen drive cruzer but after 1.5 month when I connect my pen drive to the system, it asked me to generate new ...
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Decrypt Private Key
I have a private key together with a certificate in a pem file.
The part of the private key starts with:
-----BEGIN ENCRYPTED PRIVATE KEY-----
I have a passphrase for it.
I need to bring it back to ...
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Decrypting .P7M File with Key (.pem) using OpenSSL
My knownledge about security is limited so I need some help here.
The Question
I want to Decrypt a .P7M file using its private key (.pem). I would prefer to use OpenSSL for this.
Tried so far
...
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Is TLS v1 really secure for VOIP and video calling?
Many applications are still using TLS v1 for video conferencing and VOIP calls. Is TLS v1 really secure for video and voice & video calling? or can some one can easily snoop your sessions with ...
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SSL Decryption why is the root CA certificate required on clients?
Maybe a quick question. We have Palo Alto's that perform SSL Decryption using a sub CA certificate issued by our internal Root CA. This is working for our internal windows domain computers as the root ...
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3rd Party Authentication protocol
I have a hardware device (H), phone (P) and web server (S). I would like P to be able to send commands to H, but only if it is authorized to do so. Permissions are stored on server. Technically I ...
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Solutions to decrypt data on access
I want to store sensitive data on on my (public) linux server. Also, I want to be able to access the data from different locations and different OS without much hassle. I thought about using a (simple)...
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Is there a virus that attempted to foil generic decryption techniques, and how did it do so?
Is there a virus that attempted to foil generic decryption techniques? How did it do so?
I need to know the virus name, because I tried searching and I am unable to locate any virus that did that, and ...
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How does Silverlight protect the AES keys it gets from PlayReady? [closed]
I'm doing some research about how Silverlight protects AES keys.
Here is the scenario: There is a smooth stream live encrypted channel service. When i log in to the service and tune the channel, ...
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Fiddler Can decrypt https traffic
So apparently, a software called fiddler is able to very easily decrypt secure https traffic with a click of a few buttons:
http://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/DecryptHTTPS
I ...
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Looking for a (simple) utility to decrypt rsa-encrypted text in Windows?
Quick question: I'm looking for a simple utility program to be able to decrypt rsa-encrypted data (either base64-encoded or binary attachment) on a Windows workstation.
Scenario: There is a group of ...
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Decrypt and then re-encrypt all requests to the internet at firewall level
I don't have strong skills about this matter but I am very curious about the following communication so may I ask:
One institution sent a message to all network users saying that "all requests to the ...
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What is the safest way to encrypt a password that can be decrypted at a later time?
In a web app I'm building, I need to use Apple's AutoIngestion tool for iTunes Connect. In this tool it seems the only way to use it is to send a password in plain text.
What would be the best ...
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What is a current best practice example of basic encryption and decryption in PHP?
I have a good working knowledge of basic security best practices (password hashing, preventing sql injection, CSRF, etc.) but am completely at a loss for finding a solution to common-case encryption ...
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Can this modified 'Many' Time Pad be made 'stronger' by using an extrememly long key?
Starting with a one time pad say you want to encrypt some small strings like the words in this sentence but you want to reuse the same OTP key for each string so that when you encounter the same word ...
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Why is the first line of http message unreadable after decryption
I have a TLS Record containing HTTPs application data.
I extracted the encrypted plain text with mac from the application data, then, when I decrypted the extracted data using AES CBC mode, I am ...
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In PSK TLS, how is the key used for encryption derived?
I'm trying to decrypt a message sent over a secure communication channel using TLS_PSK_WITH_3DES_EDE_CBC_SHA. I now have the client random number, server random number, PSK identity and PSK value. My ...
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CryptoWall 3 - how to prevent and how to decrypt?
My father's computer is now infected with CryptoWall 3, according to the link below.
http://www.bleepingcomputer.com/virus-removal/cryptowall-ransomware-information#CryptoWall
Is there a way to ...
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Extract a key from an AES black-box?
I'm trying to figure out how a given executable works. I know it's using AES-128 to encrypt and decrypt, but the specifics of the code are unknown. I can get the executable to encrypt and decrypt any ...
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Looking for a way to encrypt/decrypt data using a generated key that works in Windows and Linux
I am looking for a way to encrypt/decrypt data on windows and linux platforms. The data gets encrypted in windows and the same data needs to be decrypted on linux/windows and vice versa.
I understand ...
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Microsoft Bitlocker - Using my own encryption/decryption key
Is it possible for me to use my own encryption or decryption key and update it whenever is possible?
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Decrypt files in safe environment
I have a USB drive that has encrypted files on it. I was wondering what would be the best way for me to decrypt these files on my personal computer without leaving a trace? Is there a safe ...
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Emulating Client by sending encrypted hexdump to dB server and getting response back [closed]
So I used wireshark to retrieve a hexdump that has been encrypted with RSA.
I need to figure out what the response to that would be when it comes back from the server.
How I imagine it would work is:...
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typical request, what type of encryption is this? [closed]
so our company's CTO quit, and i replaced him and we need to change the system's passwords, however some passwords are encrypted in our database and i need to know what encryption to use in order to ...
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Company decrypting SSL, is it common?
We've just implemented a proxy that decrypts all SSL traffic in order to classify and scan it. Naturally a lot of our users feel concerned. We're a small company (100 users) owned by a big company (...
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How is PKI used to encrypt an e-mail for multiple recipients?
My understanding is that when an e-mail is encrypted and sent to a recipient, the recipient's public key is used to encrypt the e-mail, and then only the recipient can decrypt it with their private ...
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Decrypting TLS Traffic
Context:
I want to reverse engineer a protocol in place for the Nintendo 3DS. The implementation however, uses TLS, which makes it difficult to reverse engineer. I'm currently able to sniff packets to/...
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Why is not safe to use the same public key in RSA?
In the RSA context, why is not safe to use the same n (public key)for different people?
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Need help with decrypting the "client key exchange" captured in Wireshark
I am trying to understand how the SSL handshake happens for HTTPS.
I did the following:
Captured the packets for a HTTPS connection using Wireshark.
examined the Client Hello for cipher suites ...
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2 way encryption of a string into numerical string using random number
I have a random number like 0.323978544752212. I want to encrypt a string using this random number into to numerical string i.e. final string is like ...
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Decrypt signature file based on plaintext
I have 2 text files used by an application.
One is a very large "schema" array (approaching 100,000 lines, JSON format).
The other is a .txt.sig file generated somehow from the contents of the schema ...
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How are Tor packets decrypted on the client?
I am a bit confused about packet decryption of Tor on the client.
I understand that if a client sends a request to a web server by using Tor, the request will be encrypted a couple of times, and ...
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How can I recover files encrypted by Android ransomware?
My Samsung Galaxy Note II was infected by a virus called the "FBI virus." Fortunately, I've managed to remove the malware but my problem now is that all my files have been encrypted.
How can I ...
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Is it possible to find CryptoKey from orginal password and hashed password?
WebsitePanel is a windows hosting control panel that uses a CryptoKey to hash passwords into the databases.
We have lost WebsitePanel config file and lost CryptoKey. We have to reinstall WebsitePanel ...
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How trustable are third party root certificates?
I recently tried to use Fiddler2 from a third-party vendor Telerik. While decrypting the HTTPS traffic of my network, it asked me to install its own root certificate in my Windows operating system:
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