The process of decoding data that has been encrypted into a secret format.
Questions tagged [decryption]
363 questions
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how do i find the number of possible keys / password to decrypt a plain text
I would like to know if there is any way to recover the plain-text of a message that's been encrypted with 55 rounds of the Caesar cipher, with a different (independently chosen) key for each round; I must use a brute-force attack, and do not know…
caroline
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Decrypt a text I don't know how was encrypted
I have these 2 different encrypted texts
+j+hnQx9Wl83MWeM92tyZA==
and
E4NEi092gWbppbpNR0JUAw==
They should both be long numbers, like 19732832, but I don't know how to decrypt them. Does anyone know how to help me? I would be very glad if…
Tommaso
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Decrypting a text encrypted with aes128 cipher algorithm
I found this challenge from a CS academy site and I was intrigued:
A message was encrypted using the following openSSL command. What is the password used to encrypt the message? What is the secret message?
$ openssl enc –aes128 –base64 <…
tllskv
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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 please suggest anything important and fault in…
gauravd2196
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How to break my toy?
When I was a kid I loved to play with Lego blocks, it was magical. I can't say that I've changed completely. Today I was playing with hash functions and decided to build my own ToyCipher, I hope no one has a trademark on it... It produces a 256-bit…
Douglas
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1 answer
An idea for password checking?
I will try and make this idea as detailed as possible, to help the community in assisting and possibility helping others with the same problem.
Background Info
My system has 60 users.
Each user has a 8 digit password, ranging from 00000001-99999999.…
ian smith
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CRC-96(ZIP) decryption
Is there a way to decrypt CRC-96 encrypted string? I am testing a web application which stores the password in the database in CRC-96 encrypted format.
user2274486
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Decrypt or prevent Teslacrypt
Has anyone come up with a method to prevent receiving Teslacrypt or a method to decrypt encrypted files?
Is there a way to prevent encryption on network attached storage?
Is email the main avenue that Teslacrypt takes to get to end-users?
Is…
mr_tuner
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1 answer
Is there any kind of encryption that returns constant number of characters?
I wonder if there is any kind of publicly known encryption (not hashing) algorithm that generates constant number of characters independent of the input.
I have came across an online platform that generates tokens (27 char Base64 string) depending…
Abood Nour
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Which encryption method is that?
I have seen it lots of times around the web, but I don't know how it's called.
It has a numeric secret key, and the output is composed only by this characters; ".,:;!%&#".
I searched all the web and I found only this program:…
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How to Find Encryption Type by Seeing Encrypted Text?
When I submit an Customer Reference ID in an Android Application it POSTs an Encrypted String to an API Endpoint.
For example, if I enter the following CR ID :
"CR-13261150"
it POSTs the following Encrypted Data:
splainText :…
Rohith
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How does PGP Public and Private Keys work?
I recently tried to understand how PGP works:
I encrypt plaintext with my private key and if I send that encrypted text to others with my public key they can encrypt that with my public key?
xLogiiC
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Java Code for Pass Encryption/Decryption
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 from the file and decrypt it.
Null
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PGP private key and decryption issues
I have created a private and public key set and encrypted a message to a friend with their public key. I then turned off my machine, and since it is not in persistence mode, my keys were deleted, but I saved my private and public key on a flash…
