Homework on Public and Private Keys - Questions

1 - The private and public keys is a way to secure your data, is use for encrypt messages and digital signatures, internally of the process is based in random numbers to generate a unique values, is most used to secure your data in case of a hacker wanna to get your information

2 - Encrypt data and digital signatures

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  1. The public key is used for encrypting a set of data while the private key is able to decrypt the information or data from the public key

  2. digital signatures for crypto transactions and data encryption .

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  1. Describe the concept of public and private key with your own words.
    Public and private keys work together in a system of cryptography. Private key is what you want to keep private as if someone finds it, they can take all of our coins. Public key derives from private key and its an address you can show publically without having to worry about getting your coins stolen. An example is when you see a website or youtube video and you see a BTC or ETH address. This individual in this case is essentially giving out their public key in the hopes of being sent some crypto. This system is a one way function meaning you can generate the public key from a private key but you can’t go from a private key to a public key.

  2. What 2 use-cases can public key cryptography be used for? Encryption, meaning you can encrypt a message like an email to send to someone else. Its also used for digital signatures, this is to identify and/or show the integrity of the individual or message.

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  1. Public key is generated from the private key.
  2. Encryption: to encrypt a message, only the person who has the private key can open and read the message
    Digital signature: where you sign a transaction with the private key from your wallet.
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1- From private key i can generate a public key, anyone can see my public key but no one can see my private key.

2- a) Encryption messages.
b) Digital signatures.

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  1. Describe the concept of public and private key with your own words.

Public keys are keys generated via using the private key your computer generated ie input to get your public key ie output also this is strictly uni directional meaning I can recreate my public key with my private key but I cannot do the same with my public key and get my private key

  1. What 2 use-cases can public key cryptography be used for?
    Encryption and digital signatures. If someone sends me a message and uses my public key to encrypt it I can only decrypt it with my private key to make the message readable. Digital signatures being if I sent a message and put in my private key . Which can then be used to see if it really is from me because if you input my private key you should get my public key. In bitcoin we sign our transaction with private key which proves we own said coins . Via our private key we get a public key and via that we get our bitcoin address. Every transaction we send is signed with private key which can get us public key which then gets us our bitcoin address proving ownership.
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  1. A public key is open to anyone on the system and is used to encrypt data. The private key is used to decrypt data.
  2. Decrypt the hash and validate the integrity of the digital signature.
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  1. A private key is generated when you have a wallet. The private key must be kept safe and secret. The private key is how you sign to sell your bitcoin. The public key is used as a way of identification that everyone can see. You can generate your public from your private key. There is no way yo know your private key if you only know the public key.

  2. You can encrypt messages using someones public key to send them messages that only they can access using their private key. IT is also used for digital signature. Digital Signature is how you verify transaction using bitcoin.

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  1. The concept is pretty much a private key generated from your computer that pairs it with a public key. The public key is derived from the private key.

  2. The two use cases encryption and digital signatures.

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Private key is you secret key that you can use to buy stuff for, but you use a generated public key to receive cryptocurrency, so that none can access your currency.

One is to receive founds, sign something. send message.

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  1. Intended for sending encrypted messages over an unsecure connection.
  2. Sending a message or sending funds.
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  1. private key is randomly generated very large number, and then used to generate the public key where it is impossible to guess the private key from public key. We share the public key to everyone, when someone can encrypt the message with the public key and send to us. The message we received is then decrypted by our private key.

  2. (1) encrypt the transaction (2) sign the transaction

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1.Private key is to remain private and public key is to share,if someone gets your private keys then your funds will be gone.
2…Public key cryptography can be used to receive bitcoin payments because they are hashes of public keys, and can be used to encrypt messages between two parties, you will need the public key of the receiver to encrypt it and your own private key key to decrypt it.

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  1. Public key is used to encrypt a message to send to someone. They use their private key to decrypt the message. It works because the private and public key are a pair that work together.
  2. Encryption and digital signatures are the two use cases. You use your private key to send bitcoin which validates your identity and receive into your public key.
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  1. A public is used for the public audience with encrypting data. A private key is meant to be used for decrypting the data in a private manner.
  2. The 2 use cases public key cryptography can be used for is the already mentioned encryption as well as digital signatures.
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1.) The concept of public and private keys is to create encryptions and digital signatures among the blockchain for interaction. A cryptographic function creates a private key which is encrypted, then when that private key is used to interact on the blockchain network, a public key is paired through a digital signature event. A bitcoin wallet address can also be established through the process of these keys being paired.
2.) The 2 use-cases a public key can be used for in cryptography is encryption and digital signatures.

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  1. Private key is a number randomly generated very large number that is kept secret. Public key is derived from the private key through a hash function such that if you have both numbers you can check that they really are linked but if you have the public key there is no way to calculate the private key
  2. Encryption and digital signatures
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1. Describe the concept of public and private key with your own words.

The private key is generated from the seed words. Therefore the seed words decrypt the private key.
The public key is generated from the private key, therefore the private key decrypts the public key.

The public key is used to receive transactions. The private key is then used to proof ownership of those UTXO’s and can sign to spend and send that UTXO.

2. What 2 use-cases can public key cryptography be used for?

There are 2 main use cases for private/public key cryptography which are :

  • Encryption : The public and private keys for example.

  • Digital signatures : Like signing a transaction for example.

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  1. Describe the concept of public and private key with your own words.

Two random numbers generated by public key cryptography, in order to insure privacy and verify identity of a peer to peer transaction.

  1. What 2 use-cases can public key cryptography be used for?
  1. Encryption
  2. Digital signatures
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  1. I have a Private Key that generates a Public Key. Everyone can see the Public Key but only I can get whatever info associated with Public Key with my Private Key.
  2. For Encryption and Digital signatures.
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