Collaborate Disseminate
Cryptographic keys authenticity is a problem that I think only a few people encounter.
Based on what I understand, the most common way to solve this specific problem was to bind one’s private identity such as email/phone number/IP addresse… Continue reading When do we need cryptographic keys authenticity? What can we do to provide keys authenticity?
Trying to understand this from a high level conceptually. It is obvious from all information on Asymmetric encryption that a public key can be of course, public and there isn’t a danger of interception. So I’m faced with a point in my soft… Continue reading How vulnerable is security if a public key is swapped by active attacker if a key check is done?
I have gone through many websites to understand the CA and CSR working process but I am still confused.
I have generated testportal.crt CSR and sent it to CA to sign it.
CA signed testportal.crt with its public & private key pair, and … Continue reading How CSR & CA works [closed]
Below is the scenario I am demonstrating in LAB.
I have generated CSR on F5-LTM and provided it to CA (CA is my Windows server 2012)
With the help of OpenSSL on Windows server 2012 I generated public and private key pair and signed the C… Continue reading HTTPS not working [migrated]
I am still learning about SSH, SFTP and private/public keys. My elementary understanding of keys is that the private key should remain on the machine it was generated on and never be shared.
I have a Lightsail instance that I would like to… Continue reading Why does Lightsail require the server’s private key to connect via SFTP?
I want to implement simple software protection mechanism. This is how it would look like:
My question is – is there any problem for me using the private key for encryption and public for decryption (since usually it is other way around)?
… Continue reading Using Private Key for encryption
This is a follow on from this question:
"Diffie-Hellman Key Exchange" in plain English
In the answer to that question, the standard Diffie Hellman key exchange equation is derived:
(g^a mod p)^b mod p = g^ab mod p
(g^b mod p)^a m… Continue reading How does the inclusion of a subprime q value affect the Diffie Hellman equation for key exchange? [duplicate]
My knowledge about these topics is very elementary, please "school me" if I said something completely wrong, it would surely help me understand these things better. Now, to my issue.
Now that I have a laptop and didn’t encrypt th… Continue reading Not understanding why I should use public/private key encryption over password?
I have somebody’s public PGP key imported on my laptop (Debian Linux), but not their private key. When I encrypt a file to them using their public key, I can then decrypt it again even though I don’t have their private key. Through exper… Continue reading Enlighten Me Please Regarding PGP Encryption
When using 2-factor-authentication using plain TOTP, the secret is stored on both the client and the server. This in turn means, that anyone with access to the database (and a key for it) knows the 2fa-secret of all the users. Why is this … Continue reading Using Public Key Cryptography for improving 2FA?