hashing

🚀 Crypto Basics Series #43: What Is Hashing?

🔢 What Is a Hash?

A hash is a fixed-length string of characters generated from input data using a mathematical function called a hash function.

Even a tiny change in the original data can produce a completely different hash.

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⚙️ How Does Hashing Work?

Data → Hash Function → Hash

For example:

"HELLO" → "A1B2C3..."

Change the data:

"HELLO!" → "F8D9E1..."

The resulting hash can be completely different.

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🔗 Why Is Hashing Important in Blockchain?

Hashing helps with:

- 📦 Linking blocks together
- 🔐 Protecting data integrity
- 🧾 Identifying blockchain data
- 🔍 Detecting changes
- 🛡️ Supporting blockchain security

Each blockchain can use different hashing algorithms and designs.

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💡 Simple Example

Think of a hash as a digital fingerprint for data.

If the original data changes, the fingerprint changes too.

That's why unexpected changes can be detected.

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⚠️ Important

A hash is not encryption.

Encryption is designed so authorized users can recover the original information.

Hashing is generally designed as a one-way transformation where recovering the original input from the hash should be computationally difficult for a secure hash function.

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💬 Question

What happens when the input data changes?

🅰️ The hash can change completely
🅱️ The hash always stays identical

👇 Comment your answer!

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#Hashing #blockchain #CryptoBasics #cryptoeducation #Bitcoin

💻 Multihashing technology: Enhancing cryptographic security

Cybersecurity firm Trail of Bits has published details about a new technique called SequenceHash, which aims to simplify and improve the multihashing process. This innovation is part of the company's efforts to address common challenges in using hash functions effectively and securely across various cryptographic applications.

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📊 Impact: 📊 Moderate
🏷️ OTHER

#Cryptography #Security #Hashing #BlockchainTech #TrailOfBits

📰 Source: blog.trailofbits.com