Alice and bob public key cryptography

1. What key does Alice use to encrypt to Bob?
2. What is Alice's public key?
3. Why are Alice and Bob used in cryptography?
4. What is the problem with Alice sending Bob a message by using her private key to encrypt it while Bob uses Alice's public key to decrypt it?
5. What key is Alice in Chains in?
6. How can Alice and Bob keep the information they exchange with each other private?
7. Who is Alice and Bob Cyber Security Wise?
8. How does Alice get the key?
9. What did Alice do with the key?
10. What comes after Alice and Bob?
11. How can Alice ensure that Bob knows only she could have sent the message?
12. Is it possible for Bob to decrypt the message?
13. What key does Bob use to encrypt the checksum for accomplishing this goal?
14. What key is Alice in Chains don't follow?
15. How does Alice get the key?
16. Which key does he use to encrypt the message?
17. When Bob receives a message from Alice that has been encrypted using asymmetric algorithm which key does he use to decrypt the message?
18. How does Alice guarantee to Bob that it was her who sent the message and that the message wasn t modified during transmission without encrypting the entire message?
19. Which method uses both 128 bit and 256-bit keys to encrypt data?

What key does Alice use to encrypt to Bob?

Alice can pick a secret key K for some symmetric-key cryptosystem, then encrypt K under Bob's public key and send Bob the resulting ciphertext. Bob can decrypt using his private key and recover K . Then Alice and Bob can communicate using a symmetric-key cryptosystem, with K as their shared key, from there on.

What is Alice's public key?

Alice has both a public key and a private key, so she keeps her private key in a safe place and sends her public key to Bob. Bob encrypts the secret message to Alice using Alice's public key. Alice can later decrypt the message with her private key.

Why are Alice and Bob used in cryptography?

Alice and Bob are fictional characters commonly used as placeholders in discussions about cryptographic systems and protocols, and in other science and engineering literature where there are several participants in a thought experiment.

What is the problem with Alice sending Bob a message by using her private key to encrypt it while Bob uses Alice's public key to decrypt it?

Alice must've sent it, because only Alice can encrypt something that decrypts properly with Alice's public key.

What key is Alice in Chains in?

Would has sections analyzed in the following keys: F Phrygian, and B♭ Minor.

How can Alice and Bob keep the information they exchange with each other private?

Alice and Bob each publish a public encryption key, which allows anyone to send them an encrypted message. But they keep secret the corresponding decryption keys, so that only they can read the messages they receive.

Who is Alice and Bob Cyber Security Wise?

Alice and Bob are Born

In February 1978, Rivest, Shamir, and Adleman published their paper “A Method for Obtaining Digital Signatures and Public-key Cryptosystems” in Communications of the ACM, (the paper is now typically called the “RSA paper” given its stature in the field).

How does Alice get the key?

Alice notices a tree with a door in it, and when she enters it she finds herself in the long hallway with the glass table. She takes the key and unlocks the door, eats from the mushroom to make herself smaller and is finally able to enter the beautiful garden.

What did Alice do with the key?

She tried the little golden key in the lock and to her delight it fitted! Alice opened the door and looked into the loveliest garden she had ever seen!

What comes after Alice and Bob?

Since the late 1970s, cryptographers have been using personal names (instead of labels like “person A” and “person B”) to describe various communications scenarios. Many of these scenarios involve two communicating parties named Alice and Bob and an eavesdropper named Eve.

How can Alice ensure that Bob knows only she could have sent the message?

She wants to assure data confidentiality, so she'll use asymmetric encryption to send it. She used Bob's public key to encrypt the message. That way she knows only Bob who is the only one who has this private key can read it, but Alice wants Bob to know that the message came from Alice and no one else.

Is it possible for Bob to decrypt the message?

A message encrypted with Bob's public key can only be decrypted using Bob's private key. The message cannot be decrypted with Bob's public key. So, only Bob can decrypt them.

What key does Bob use to encrypt the checksum for accomplishing this goal?

Explanation. Since Bob has and used Alice's public key to encrypt his message, only Alice's private key can decrypt it.

What key is Alice in Chains don't follow?

Don't Follow is a moody song by Alice In Chains with a tempo of 116 BPM. It can also be used half-time at 58 BPM or double-time at 232 BPM. The track runs 4 minutes and 22 seconds long with a C♯/D♭ key and a major mode.

How does Alice get the key?

Alice notices a tree with a door in it, and when she enters it she finds herself in the long hallway with the glass table. She takes the key and unlocks the door, eats from the mushroom to make herself smaller and is finally able to enter the beautiful garden.

Which key does he use to encrypt the message?

Only her private key can undo the encryption, and no one can figure out the private key from the public key. Public key encryption uses a pair of keys: a public key for encryption and a private key for decryption. The sender uses the public key to encrypt the message, and receiver uses their private key to decrypt it.

When Bob receives a message from Alice that has been encrypted using asymmetric algorithm which key does he use to decrypt the message?

When Bob wants to send a message to Alice he uses his copy of her public key to encrypt the message. Alice uses her securely-stored private key to perform the decryption.

How does Alice guarantee to Bob that it was her who sent the message and that the message wasn t modified during transmission without encrypting the entire message?

So Alice can use Bob's public key to verify that it was indeed signed by Bob, and then she can decrypt it using her own private key. That way, she knows that (a) Bob sent it and (b) it was sent to her and nobody else read it.

Which method uses both 128 bit and 256-bit keys to encrypt data?

AES uses 128-, 192- or 256-bit keys to encrypt and decrypt data.