Key generation is the process of generating keys for cryptography. A key is used to encrypt and decrypt whatever data is being encrypted/decrypted.

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How does a chosen ciphertext attack work on textbook RSA?

I am very new to cryptography and I am confused with something. Here is the homework question I am having trouble with: Write a program to attack the Textbook RSA Encryption Scheme, in order to ...
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MPPE-Send and Receive key derivation from MS-CHAPv2

I am trying to get the MS-MPPE-Send-key and MS-MPPE-Recv-key from the MS-CHAPv2 challenge material. I am able to follow the RFCs 2548 3078 and 3079 to the step of getting the GetNewKeyFromSHA() it is ...
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What is the openssl equivalent of using java's KeyPairGenerator?

I have been using java's KeyPairGenerator in order to generate public/private keys within a program so that I can encrypt and decrypt files(also using java encrypt/decrypt methods). I want to be able ...
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Running openssl s_client with an aes encrypted key fails

I'm trying to verify a 2-way SSL connection using the openssl s_client command openssl s_client -connect localhost:8883 -CAfile ca.pem -cert client.crt -key client.key The openssl s_client fails ...
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Algorithm to generate (and verify) string of 4 quad alpha numeric code

I am writing a system, for which I need to generate unique transaction numbers (which can be verified by myself). I want to use something similar to that used by credit cards, where a string of the ...
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Safe to Encrypt ClientId (Integer value) to use as Client Key?

Asked a follow up question (see this link). Based on my understanding, I have to issue an unique ClientId and Client Secret Key to the API subscribers right after the registration phase (client lives ...
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How is Tresorit client-side encryption key stored and managed?

I am using Tresorit on Mac OS X and iPhone. When I am using it there is always applied client-side encryption before posting the file to cloud. The key used for encryption is AES-256 and CFB mode of ...
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Question regarding RFC7296 (IKEv2) PRF+

In RFC 7296, in section 2.13 What do the "K", "S", and T# represent? And my follow-up question is, in section 2.14 What would be the K, S, and T# equivalent in {SK_d | SK_ai | SK_ar | SK_ei | ...
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key hierarchy management and master key

Now, I have this equation, {{K_ab}K_bs}K_as. K_ab is encrypted by K_bs then whole packet is encrypted by K_as I think the key structure is K_as is the master key, K_bs is under K_as and K_ab is the ...
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National ID analysis and generator?

A National ID in my country consists of 14 digits: CYYMMDDXXZZZZ1C1 Where: C refers to the century - 2 for those born between 1900 and 1999, 3 for those born between 2000 to 2099 YYMMDD - ...
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Key stretching approaches

I've seen that a number of key stretching algorithms and they involved increasing the number of operations needed to compute the key(i.e. the number of rounds within a hash function). But, I wonder if ...
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Wireless entry systems why not use pre-shared noise?

I think the title question speaks for itself, but here are the details: You have 4 bits for the buttons, 16 bits for the counter, and a fix 16 bit ID. The transmitter would send out these bits plus ...
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Key Distribution Center Key Protocol Analysis

http://i68.tinypic.com/fwu92v.png As shown in the image, why is Circle 1 to be B and Circle 2 to be A? Why is not the opposite, that is, Circle 1 to be A and Circle 2 to be B? like this picture ...
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Secure Handshake and register for Auth

The registration The Start - pre-authentication Let's assume there are Alice and Bob. They know each others public keys and each of them generates a random string - Bob's Bobkey and Alice's Alicekey....
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Preventing a key from being found by analysis

Lets say Alice wants to send an encrypted message to Bob. They both know a secret key. Alice uses the key to encrypt the message and Bob uses the key to decrypt the message. Now, if the handshake ...
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How many bits of security is in a n-bit modulus?

In a paper that I read, "A riddle wrapped in an enigma" by N. Koblitz and A.J. Menezes, there are several statements like this one(at page 4, section 2.3): ..., the NSA updated to Suite B [40] so ...
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How does STK (Short Term Key) generation work in a Bluetooth Low Energy?

I want to understand how STK (Short Term Key) generation works in a Bluetooth Low Energy. I don't want to go deep at a packets exchange level of a Security Manager Protocol, but I want to understand ...
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Distribution of key by server

I have read that in asymmetric cryptography, a system admin can generate key pairs on the server. After that, the users will be given the generated key pairs and this is an efficient way of doing this ...
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How should I organize my keys?

Suppose I have a set of computers with variegate level of trust (for example): I fully trust my own desktop pc at home I trust a bit also my smartphone, but I know it could be stolen I trust a bit ...