- A public key is derived mathematically from a private key, which is created randomly. Asymmetric cryptography makes guessing a private key from a public key impossible. A private key can also generate a “signature” that is different each time it is generated, but still mathematically related to the private key that created it.
2.Secure transactions that can’t be faked, and securing data that can’t be accessed with out a key.
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- Private key in my personal digital signature. Public key is derived from my private key and it’s what everyone can see when I make a transaction (send or receive).
- Digital signature and encryption.
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Think of it as your own personal bank. The public key is the bank lobby, everyone can see it and send money through. The private key is your bank vault, only you, the bank owner, has access to the vault that stores the money that comes in via the public key/bank lobby. This public key/private key creates a system that is critical for cryptocurrency usage.
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Message encryption, trading cryptocurrencies and NFTs (nonfungible tokens).
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1 - Describe the concept of public and private key in your own words.
A1 - Private key is generated randomly and gives authenticity to the dententry, allowing the signature of transactions or encryption of messages. The public key is derived from the private key and can be shared to receive transactions or messages.
2 - For which 2 use cases can public key cryptography be used?
A2 - A.2.1) Receive encrypted messages as the messages will be generated based on the public key; and
A.2.2) Receive crypto transactions.
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- Public and private keys are essentially the way to internally confirm external transactions and messages. Having the ability to confirm integrity and validity by synergistically using these keys allows transactions on the blockchain to work.
- Digital signatures to confirm the authenticity of the sender and also having the ability to encrypt a message for an end user using their public key.
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- Describe the concept of public and private key with your own words.
A private key is kept secret; it what gives you ownership of your bitcoin. The public key is generated from the private key and is used to send and receive funds.
- What 2 use-cases can public key cryptography be used for?
Sending encrypted messages (can only be decoded with receiver’s private key), or digital signatures (authentication of transactions/confirmation of identity).
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- A private key is a randomly generated key from your device. A public key is generated from the private key.
- a). Key pair cryptography and b). Digital signatures.
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Cryptography uses A symmetric key generation which produces two keys one public one private. The public key you would post for all to see. People could use your public key to send you messages or crypto, That only you would be able to decrypt using your private key.
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- Securing messages /crypto
2)proof of authenticity using a combination private and public keys of parties involved.
- Securing messages /crypto
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- Describe the concept of public and private key with your own words.
Public and private keys are cryptographic tools used for security and identification. The public key is linked to your private key but there is no way to decipher your private key with the public key alone. - What 2 use-cases can public key cryptography be used for?
encryption and digital signatures
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Private key is a number that cant be deciphered, With this you can generate public keys that are used receive encrypted info or to validate that certain info comes from you.
It can be used for encryption or as signature.
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Private keys should never be shared. They can be used to generate public key, which can be shared.
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Public Key cryptography is used in both Bitcoin and PGP (Pretty Good Privacy).
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You described the usage but not the use cases which are encryption and digital signatures. 
1/ private key is generated randomly by computer of sender, in a transaction, and is kept secret by him
public key is then derived from this private key through a computation; public key is readable by anyone in internet network
When sender wants sending a message ( i.e. a BTC…), he signs-up the message itself in adding a signature derived from his private key.
Recipient, with public key of sender and signature, identifies good provenance of message (and accept it)
2/ cryptocurrencies, signed messages, encryption-decryption
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Describe the concept of public and private key with your own words.
As a pair, a method of encrypting and decrypting data. The public key can be used to encrypt any data, the private key is required for decrypting. -
What 2 use-cases can public key cryptography be used for?
1)To encrypt data, to be later decrypted only with the correct private key.
2)To verify that a digital signature came from the correct private key.
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Describe the concept of public and private key with your own words.
Private key is random # know by creator of key and is used to generate the Private key. -
What 2 use-cases can public key cryptography be used for?
Public keys are used in crypto (BTC) for encryption and digital signatures.
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The public and private keys work together as a means of encrypting and decrypting data.
The public key encrypts the information to be sent over and the private key is required to decrypt the information and gain access to the contents. -
It can be used for encryption/decryption purposes as well as digital signatures to guarantee that the sender is, in fact, the owner of the content being sent
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A public key is exactly as it sounds, its public for everyone to see. A public key can be created from a private key, but here is when the one-way function comes in. You can always go from private key to public key, but not vice versa because the private key is a random number that is completely unique and not trackable.
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Encryption and digital signatures.
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Describe the concept of public and private key with your own words.
Private keys are kept private and only meant for you to know/see. Public keys are meant to be used public so other people can share content with you. If someone sends you information it is possible to encrypt the message so the only person that is capable of reading/viewing the message would be the person with the private key that can decrypt it.
What 2 use-cases can public key cryptography be used for? Making exchanges(exchanging messages or making purchases), digital signatures
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Describe the concept of public and private key with your own words.
Private key is a randomly generated large number which is mathematically processed in to a public key. Private keys should be kept secret. Not available to the public.
Public key is generated through private key and can be shared with everyone. -
What 2 use-cases can public key cryptography be used for?
For encrypting data and digital signatures.
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Describe the concept of public and private key with your own words.
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A private key is a cryptographic code that verifies messages and allows for encrypted messages to be decoded / opened. Public keys are derived from private keys using cryptography and allow for a code that can be used in the “public” by interacting with other people’s keys. Public keys are created from private keys, but cannot be reduced back to private keys so they are safe to share openly.
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In cryptocurrency, when you want to send and received a transaction you must use your public key to receive the transaction from another user and then your private key to confirm / sign the transactions.
What 2 use-cases can public-key cryptography be used for?
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Encryption - Privacy, and Private data transfers.
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Digital Signatures - Identification and verification
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