- Describe the concept of public and private key with your own words.
A Public key is the derivative of its private key, It is a form of encryption and also is a digital signature. - What 2 use-cases can public key cryptography be used for?
As encryption I.e when sending the private key, the public key can be checked to be correct.
As a digital signature when sending a transaction the private key is matched to the public key to complete and confirm the transaction.
- Private key is a random number that you should keep secret but you can use it for digital signatures. Public key is derived from the private key and is accessible to anyone.
- Encryption and digital signatures
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- The private key is a set of random numbers in a 256-bit format. This private key undergoes through elliptical curve multiplication to generate x,y coordinates. These are hashed by SHA256 and RIPEMD160 to reduce in size. To produce an address, Public key is hashed twice to create a checksum. Version Byte-compressed public key-checksum together is reduced to base 58 the get a final address. Through this process, public and private keys are related to each other.
- The public key uses can be for the following two applications, namely, Encryption and Digital signatures.
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The public key is a random number that is generated to ID the address of a specific crypto wallet that i used to receive crypto, the private key is used to send crypto. The public key is generated by the private key and is only accessible by the private key. You cannot reverse engineer the public key to find the private key info.
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To receive Crypto from any recipient and to generate a wallet address to add security to the Hash functions.
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Public keys and private keys are used in security and identification. A public key is created first and with a hashing function a public key results. Public keys are open for anyone to see and are linked to the private key. The link is verification of ownership of information on the private key. The information on the private key cannot be gained through the public key with out a pass code.
With Bitcoin transaction you share an address (public key) for people to send you a bitcoin. Then you can get the bitcoin from the public key using a private key.
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Your computer generates a number (private key) that number generates another number (public key) when people see the public key they can find the owner of the private key and verify who it is
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A. Sending private messages
B. Transferring wealth of course!
- Private key is a randomly generated number that generates a public key. Public key is used to receive signals and a private key is used to decrypt messages
- decrypt signals and generate public numbers
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Describe the concept of public and private key with your own words.
Private key is a random number generated from 1 to ~ 2^256, then this number undergoes elliptical multiplication to produce your public key. -
What 2 use-cases can public key cryptography be used for?
Generation an address to: a) send and b) receive
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- a private key generates a public key that generates a bitcoin address
- public keys can send and receive messages or bitcoin
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- Describe the concept of public and private key with your own words.
Public keys encrypt messages that only their related Private keys can decrypt. (Public and Private keys always go in pairs). - What 2 use-cases can public key cryptography be used for?
a. Secure communication channel between: messages/transactions can only be decrypted with private keys.
b. To be in control of your assets.
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- Describe the concept of public and private key with your own words.
Private key is your own personal key, allowing you to sign, perform transactions etc… Public key is derived from your private key and can be shared with anyone. It allows people to send you messages/transactions.
- What 2 use-cases can public key cryptography be used for?
Public key cryptography is used for Encryption to securely communicate and as a Digital signature (derived from your private key) for integrity and identification of a message.
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Thanks for clearing that up a bit Fabrice…
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- A Public key is generated from a private key for everyone to see.
If someone sends me a message and encrypts it with my public key only i can read that message.
If i loose my private key …will loose the ability to access that message, in case of my private bitcoin key …will loose access to my bitcoins. - messages,…bitcoin transactions
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- A private key is what you sign with when you send your bitcoins and it is proof of integrity that you are the one that are sending the bitcoins. Only you have access to it and it is a random number, if someone else gets hold of it your wallet is stolen.
A public key is for everyone else to see, it is generated by the private key. You can’t access the private key from the public key for (obvious) safety and integrity reasons.
They function as tools for security and integration purposes.
- The two cases are encryption and digital signatures. In encryption you can verify that the files or data are sent from the actual sender and in digital signatures it can include sending bitcoin to other addresses.
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A wallet/computer generates the private key, the private key is the input for the Hash SHA256 which generates a public key (that cannot be used to recalculate the private key, highly unlikely), which generates a Bitcoin wallet address.
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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 key is a generated random number that needs to be kept secret. The public key is derived from the private key. It is impossible to derive the private key from the public key. - What 2 use-cases can public key cryptography be used for?
Encryption and Message Signature.
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the concept is used in enkrytion and for Digital Signatures. the private key is generated by my computer and ist a random number and only you should know it . from the private key my computer generates the public key through a spescial formula , wich is also a random number and can be sehen by everybody . from my public key its impossible to go back to the private key. messages will be decrypted through the recipients public key and send to the recipient .
the recepient can encrypt ist through his private key. digital signatures which are used in BTC the message is send through the ptivate key and so its signed by the private key.the recipient can see the message through signature and the senders public key. -
the concept is used in encryption of data and for Digital Signatures in Cryptocurrencies
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- A private key is known only by the owner and it produces the public key, which is visible to anyone.
- A public key can be used to encrypt a piece of information that only the holder of the associated private key can decrypt. A public key can also be used to verify the identity of information signed using a private key.
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a public key is the address of which to send data/funds etc to. You can share this with anyone, open for the world to see. It is generated by and paired with a private key. This is to be kept private from everyone. This key is used to verify and sign transactions.
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receiving funds/BTC/messages from another party.
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1. Describe the concept of public and private key with your own words.
Let’s say you have a house. In the house you have a room that you want to keep private, but the rest of the house is open to your friend. You hold the only (private) key to that room, but you give your friend a (public) key to the house. The private key structure is similar to the public key, so if they were able to physically glance at the private key structure the friend would recognize the key belongs to the private room, but they would never have access to it unless you gave them the key.
A private key is a number to be kept secret. A public key is created from it.
2. What 2 use-cases can public key cryptography be used for?
A) You can encrypt a message
B) You can send a digital signature
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