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Learn to learn before you teach
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Suppose your bank account contains #10,000
Now imagine two things happen at almost exactly the same time:
You withdraw ₦7,000
Your sibling withdraws ₦7,000
Both systems check:
Does the account have at least ₦7,000?
Both see:
Yes! ₦10,000 is available.
Then both withdraw ₦7,000.
You might somehow end up with:
₦10,000 - ₦7,000 - ₦7,000 = -₦4,000
The problem is that both operations looked at the same information before either one finished changing it.
That's a race condition.
Now get your writing materials and get to class
Next might be cash price and PyWaX source code
And it will only for those who have been consistent
I have nothing to lose
Just wanna see dedicated ones growing well
Reward
Canva Pro with a lifetime access
Or
1 month premium access on JusticeTech Autosave
Or
ClipGrabX full source code
Limited time
Good luck
RULES & LEARNING PRINCIPLES1. You are not required to answer every question. If you don't know, it's perfectly fine to leave it unanswered. 2. Do your research before answering when necessary. Take the time to verify information rather than guessing. 3. Don't answer just to impress anyone. Accuracy and honesty matter more than sounding knowledgeable. 4. Share your own approach before correcting someone else's answer. If you genuinely know the answer, explain your reasoning so others can learn from it and understand how to arrive at the solution themselves. 5. Most importantly, always make an attempt. We are all here to learn, improve, and share knowledge not to prove who knows the most. The goal isn't to always be right. The goal is to learn, contribute, and help others learn along the way.
NB: The purpose of this community isn't to prove that you already know everything. It's to become someone who knows more tomorrow than you know today. Attempt. Explain. Listen. Question. Research. Learn. Repeat.
I have a very tricky but interesting question to ask
This question might come with a reward
My next post
Repost from Pavel Durov
💎 Telegram has applied for the .gram domain zone.
If the application is approved by ICANN, a billion Telegram users could get their own second-level domains.
🖥 For example, @durov would get durov.gram, and @monk would get monk.gram.
Users would be able to set up their interactive websites hosted by Telegram — just by typing one prompt ✨
Let me peg it here on cryptography I believe you have learnt new stuff today...
Hashing is like a digital fingerprint
Now think about your fingerprint which helps identify you.
Also note that a cryptographic hash can act somewhat like a fingerprint for data.
Now check this out
Suppose you download a file.
The website says "Expected SHA-256: ABC123..."
Your computer hashes the downloaded file.
Now If the calculated hash matches the expected hash, that's strong evidence that the file is unchanged but If the hash doesn't match, something is different.
3. What is hashing?
Hashing is different from encryption.
This is extremely important.
A hash function takes data and produces a fixed-size value called a hash or digest.
2. Asymmetric cryptography
Asymmetric cryptography uses two related keys:
i. Public key which can be shared.
ii. Private key which ust be kept secret.
Think of it as mailbox where anyone can put a letter inside
but only you have the key to open it.
You will notice that the opening mechanism is publicly accessible, but the secret key belongs only to you.
That's a useful mental model for asymmetric cryptography.
1. Symmetric cryptography
This is probably the easiest to understand.
Imagine you and your friend have one secret key.
You use that key to lock the box.
Your friend uses the same key to unlock it.
That is it
Lol
Examples include:
AES and ChaCha20.
Three major types of cryptographic techniques
A useful way to organize cryptography is:
1. Symmetric cryptography
2. Asymmetric cryptography
3. Hash functions
Non-repudiation
In certain systems, a digital signature can provide evidence that a particular private key was used to approve/sign some data.
It's similar to signing a document, except the cryptographic process provides much stronger technical guarantees than simply writing your name.
