Collaborate Disseminate
I generated my self signed certificate using openssl and I chose ECC keys (prime 256v1) for root certificate but while authenticating with the server i.e. IBM cloud and my device the negotiated cipher suite was TLS-ECDHE-RSA-WITH-AES-128-G… Continue reading What is the relation between cipher suite and certificate? [duplicate]
If it comes to the security a hashing or encryption algorithm provides, we never know the full story. There’s that part that we (respectively the public research) understand and can reason about, but we also know that there might be weakne… Continue reading Do you rather trust a widely adopted algorithm or an underdog if they’re cryptoanalytically on a level playingfield?
Many tools enable to list accepted ciphers but not all of them verify if these ciphers are secure.
For example, Nmap with script ssl-enum-ciphers ranks some ciphers as secure even though actually this ciphers are not recommended anymore (f… Continue reading Best resource to verify weak cipher suites
I am trying to encrypt one of my primary Linux partition (5GB) by following this example to encrypt.
I want to confirm some of my understandings:
Salt is automatically generated by cyrptsetup with luks?
–iter-time and –hash only affects… Continue reading dm-crypt 2.0.3 + luks: salt auto-generated? what affects decryption speed?
I just tested a site and it looks like the certificate uses weak ciphers but the certificate is new.
Can this issue be related to the Certification Authority that provides the certificate?
Or this issue is related to the possibility of old… Continue reading Site use weak cipher and TLS older version
I am testing my application SSL configuration in Qualys SSL Labs and as a result, I have this cipher suites labeled as weak:
But according to https://ciphersuite.info/ all of these cipher suites are secure or even recommended.
How should … Continue reading Qualys SSL Scan weak cipher suites which are secure according to ciphersuite.info
In a talk about a lost or stolen laptop, it is said that:
even with hard drive encryption, eventually they can crack these secrets
But strong encryption is practically impossible to break. For example, it would take 6 billion years at 10… Continue reading Is it possible to crack a laptop’s encrypted hard disk?
N.B. Asking this here instead of Movies.SE because I’m wanting to know about the cipher itself and any history, which this site is more suitable for.
In S01E05 of The Wire, at around 45:00, it’s revealed that:
In more detail:
Each digit … Continue reading Did The Wire invent the "Jump 5" cipher?
After reading a comprehensive paper [1] covering various kinds of generalized Feistel networks, I’ve tried to implement the Unbalanced Numeric Feistel variant, which relies on modular arithmetic for splitting and joining an integer in two … Continue reading Unbalanced numeric Feistel network implementation [migrated]
I’m trying to help a small business transition out of an obsolete, obscure piece of software, and app support is, unfortunately, non-existent. To fully export the data for the new system, I need to be able to decrypt/decipher a string in o… Continue reading Help identify a simple, reversible cipher/encryption algorithm [duplicate]