Homework on Public and Private Keys - Questions

Blockchain and Bitcoin 101
#5308
  1. Describe the concept of public and private key with your own words.
    private key is a random number generated by your computer and the public key is a random number derived from the private key
  2. What 2 use-cases can public key cryptography be used for?
    Encryption and Digital Signatures
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#5309

  1. Describe the concept of public and private key with your own words. Public key is for the world to see. Private key is secure, just for me and can be used to decrypt.

  2. What 2 use-cases can public key cryptography be used for? Encryption and Digital signature.

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#5310
  1. Public key is the one available for everyone to use to interact with you. Private key is used for generating public keys and should not be shared and kept secure.
  2. Encryption and Digital signature.
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#5311
  1. Private key is at the core of crypto. In your wallet, you generate a private key. The public key is then generated from that. Your BTC address is then create from that. The public key is used publically, but each transaction is signed with your private key, which verifies that you sent it (i.e. digital signatures).
  2. encyption and digital signatures
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#5312
  1. Public and private keys are cryptographic tools that can be used to for security and identification purposes. After creating a private key, a series of random values, you can hash it and use the results as your public key. The public key can be displayed publicly and is linked to your private key, proving a connection or ownership of assets or information connected to that private key, but there is no way to decipher your private with your public key alone.
  2. Public key cryptography is currently used in Bitcoin transactions. The public key is the address you share so other people can send you Bitcoin to that address. The private key is what grants you access to the funds sent to the public key, which was derived from the private key. Public key cryptography can also be used to encrypt information and secure it from anyone except the intended recipient. The technology can be used in variety of ways. It’s probably used for claims on token offerings. It could also be used in video games for more secure in-game transactions. It could create a simpler, more secure way of proving your identity, although losing your private keys in that case could be equal to forever losing your identity if there are no safety nets in place.
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#5313
  1. Describe the concept of public and private key with your own words.
    A. A public key encrypts your information and your private key decrypts the sent information. Whomever has access to your private key can decrypt the information.
  2. What 2 use-cases can public key cryptography be used for?
    A. 1: Sending information
    2: Sending transactions peer to peer.
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#5314

1.private keys are just that. they are meant to be kept secret and stored in a safe place. it is what allows you to access funds to the addy

  1. sending that moolah… receiving that moolah $$$
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#5315
  1. Describe the concept of public and private key with your own words.
    A private key is a random number and public key is a number derived from the private key. Any value encrpyted by the public key and be decrypted by the private key. A value “signed” by the private key can be externally verfied by the public key
  2. What 2 use-cases can public key cryptography be used for?
    Encrypted messaging and digital signing
#5316

  1. Cryptography is the core of bitcoin. In order to avoid the data to to secure and not compromised encryption and digital signatures are used. Public and private keys are cryptographic functions.
    A public key and a private key are a pair of cryptographical keys that are used to encrypt and decrypt messages. The public key can be shared with anyone, while the private key must be kept secret. When someone wants to send an encrypted message to you, they will use your public key to encrypt the message. Only you, with your private key, can decrypt and read the message.

  2. The two uses cases for public crytptopgraphy are encryption and digital signatures.
    Encryption as mentioned earlier public-key cryptography can be used to encrypt messages so that only the intended recipient who must have a corresponding private key can decrypt message or transaction.
    The public key cryptography can also be used for digital signatures. Digital signatures are a sort of a unique finger print, a unique digital signature. This enables the autenticity and integrity of each message or transaction. The sender uses their private key to create a digital signature. The recipient can use the senders public key to verify the digital signature.

#5317
  1. Describe the concept of public and private key with your own words.
    Person has private key(computer generated random string of numbers) and his public key is generated from this key. To send encrypted msg to the person you need that persons public key and only he can read it because he needs to use his private key for this.
    With digital signatures A uses his private key to encrypt signature and B can verify it’s A’s signature with A’s public key.
  2. What 2 use-cases can public key cryptography be used for?
    To encrypt messages, to sign messages.
#5318

  1. Public and private key cryptography is a system of encryption and decryption that uses two different keys: a public key, which is available to everyone, and a private key, which is known only to the user. The public key is used to encrypt data, while the private key is used to decrypt it.

  2. Public key cryptography can be used for secure communication, such as sending emails, and for digital signatures, which are used to verify the authenticity of a document or message.

#5319
  1. Describe the concept of public and private key with your own words.
  2. What 2 use-cases can public key cryptography be used for?
    Public Key can be used to identify the receiver and send them something. Public key is public and shared among users. Public Key is also used to check if a transaction has been created with the right Private Key.
    The Private Key on the other hand is used to encrypt a message. Privatekey has to be private and not shared. Otherwise someone could revert the output with the Privatekey back to the input.

Sign( Message , Privatekey) = Produces output Signature with Privatekey
Verify ( Message,Signature, Publickey) = True/False, Has this been created with right Publickey?

#5320

  1. Private key is a very large random number that your computer generates for you in order to do some stuff like encrypting messages or signing transactions. Public keys are very large and random number that are derived from your private key (Through a hash function). While you can always know what your public key will be when you have access to the private key, the reverse process is impossible.

  2. Public keys may be used to digitally sign a transaction as well as to encrypt messages. When sending a message, the author encrypt the message with the receive public key, and the receiver will be able to read it with his/her private key while when a transaction is signed, the author signs it with his/her private key and the receiver will be able to decrypt it with the sender public key.

#5321

  1. Describe the concept of public and private key with your own words. → in the case of Bitcoin wallets, the private key is the astronomically large random number that is generated when a new wallet is created. The public key is matematically generated from the private key and is publicly accessible. The private key is used to generate signatures. A person can understand who sent the transaction by comparing the signature to the public key that was generated by the private key of the sender.

  2. What 2 use-cases can public key cryptography be used for? → encryption and digital signatures.

#5322
  1. Describe the concept of public and private key with your own words.

Private key is your identity that is generated by a random number to send secret messages or bitcoin .Public key verifying and encrypts messages that everyone can see on the internet . The only way to read that message is to decrypt with private key. There are no username or password just private/public keys on Web3

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

Encryption and digital signatures.Digital signatures is the identity and integrity of the verification signature from owner 1 using the public key to verify

#5323

  1. Public and private key cryptography is a method of encryption that uses two mathematically related keys to secure communication. The public key is used to encrypt messages, and it can be shared freely with anyone who wishes to send an encrypted message to the recipient. The private key is kept secret by the recipient and is used to decrypt the message. This allows for secure communication without the need for both parties to have access to the same secret key.

  2. There are many use cases for public key cryptography, but two common examples are:

  • Secure communication: Public key cryptography can be used to securely transmit sensitive information, such as credit card details or login credentials, over the internet. The sender encrypts the information using the recipient’s public key, and the recipient decrypts the information using their private key. This ensures that only the intended recipient can read the information, even if the message is intercepted by a third party.
  • Digital signatures: Public key cryptography can also be used to create digital signatures, which are used to verify the authenticity of digital documents. The sender creates a hash of the document and encrypts it using their private key, which can then be decrypted by anyone with the sender’s public key. This allows the recipient to verify that the document has not been tampered with and that it was indeed sent by the sender.
#5324
  1. Public and private key cryptography is a method of encrypting and decrypting data that uses two keys, a public key that can be shared and a private key that is kept secret.
  2. Public key cryptography can be used for secure communication and digital signatures. It allows two parties to communicate securely without a shared secret and provides a way to authenticate the identity of the sender and ensure that the message has not been tampered with.
#5325
  1. Describe the concept of public and private key with your own words.
    private key makes public key to share private information to other person but thats not using to much
  2. What 2 use-cases can public key cryptography be used for?
    can be used to share information or digital signature
#5326
  1. The public key is generated by the private key and not vice versa. The public key is what is known by others on the network while the private key should only be known by the person who created it.
  2. The two use cases for public key cryptography is encryption and digital signatures.
#5327
  1. Secure communication: Public key cryptography can be used to establish secure communication channels between two parties. For example, a web browser can use public key cryptography to establish a secure connection with a web server, ensuring that data transmitted between them is encrypted and secure.
  2. Digital signatures: Public key cryptography can also be used to create digital signatures that can be used to verify the authenticity of digital documents. A digital signature is created by encrypting a document with the sender’s private key, and can be verified by anyone who has access to the sender’s public key. This makes it possible to verify the authenticity of digital documents without the need for physical signatures or seals.