Public vs. private keys.

[bernyjb 0]

Ok, first post here. Thanks for accepting me. 🙂

I have been taking several cryptocurrency trading and investing courses (5 so far) which generally have been great. However, I'm confused about the "public vs. private key" thing.

I mean, I get it, you never show your private key to anybody. Easy enough.

But when do you use it?

If you want to withdraw your money from the exchange, you use your public key. But then, if you wanna send your money back to the exchange, you use the public key from your exchange's wallet?

So using your private key would be limited to getting your money out of the system (cashing out)? Because even if you purchase something, it makes sense (at least from my completely uninformed point of view) to use the seller's public key to make the payment...

 

Can anybody please help me out? Thank you all in advance. 🙂

 

[pxo.011 0]

You mean public address and private key right? Public address is the one you will put to receive token or alt coins private key is the one you put when you logging in into your wallet like myetherwallet, i wish i answer your inqueries

[RussiaBtcLife 29]

The private key never share with any one , only you need to know it

the  public addess you can share it with people to recieve coins