Collaborate Disseminate
I am new to the field of cryptography and security so spare me with this question. What is the general idea of duality and homomorphism of an encryption algorithm? And how one may prove those two properties of a real world encryption algor… Continue reading What is meant by the duality and homomorphism of an encryption algorithm? [migrated]
My teacher challenged us to find out which seed was used to generate some random numbers. I would like to know if it is possible to decipher the seed using the generated numbers (break the linear congruence algorithm). If possible, I ask y… Continue reading With the random numbers generated, can I know which RNG seed was used? [migrated]
Is there such a cryptographic algorithm that will encrypt any file with a password. But when decrypting, if the password is incorrect, the file will be decrypted, but instead of relevant data there will be “garbage”. It is important to not… Continue reading Is there such a cryptographic algorithm?
(dataset 1)
Input : 4400665480820628
Output : DHPqfW9/E0IZHtPGh8PQUJQG9C8zrond
(dataset 2)
Input : 4482330047024260
Output : mYsZ+kbeiOsmP7OmeZ93V+TrbQcX9zpp
(dataset 3)
Input : 4426441096508845
Output : e1JAmx0728VtnODaiKcLs9lmZ5wh49bd
… Continue reading Need Help Decoding This Algorithm for the encryption [duplicate]
When you’re trying to learn how an algorithm works, it’s not always easy to visualize what’s going on. Well, except for maybe binary sort, thanks to the phone book. Professor [thatguyer] is a computer science teacher who wanted a way to help his students visualize the process of algorithms and …read more
First off: I do not, nor intend to, use a home brew hash functionality, ever. I’m aware why one shouldn’t do that and have read enough topics about it to know it’s foolish to do.
I understand that I am no expert at the subject and that tho… Continue reading Using a home-brewed hash for passwords for a insignificant website
I am working with a piece of software which seems to use some type of lightweight, “home baked” password encryption algorithm.
I know a number of clear text passwords as well as their corresponding encrypted as they are stored in the data… Continue reading Finding encryption algorithm from known and encrypted password strings [duplicate]
I have a list of very sensitive strings and I want to ensure that these strings do not exist in a set of documents (potentially very large documents).
However, these substrings are so sensitive that I don’t want the third-party performing… Continue reading Search for existence of sensitive substring without revealing substring in cleartext
There is a scrypt cipher which is used for exmaple by some cryptos like LItecoin for their mining algorithm.
I never heard of scrypt. I know eg SHA256 which is well analyzed and considered as secure until now.
ANy known crypatanalysi… Continue reading Scrypt KDF cipher – known vulnerabilities and cryptanalysis? [migrated]
This question already has an answer here:
How to determine what type of encoding/encryption has been used?
8 answers
I ha… Continue reading finding url encoding algorithm [duplicate]