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web3glossarypublic key cryptography
Public Key Cryptography

Summary

A cryptographic system that uses pairs of keys, one public and one private, to secure communication and authenticate users.

Detailed Description

Public Key Cryptography (PKC) is a cryptographic technique that allows users to communicate securely by using a pair of keys. The public key is shared with everyone and can be used to encrypt messages, while the private key is kept secret and is used to decrypt those messages. This technique enables users to ensure confidentiality and integrity, authenticate messages, and establish secure connections over the internet. PKC is foundational for various web3 applications, including cryptocurrencies and decentralized finance (DeFi).

Category
Cryptography
Synonyms
Public-Key Encryption
Public-Key Cryptosystem
Asymmetric Encryption

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Secure Email Communication

Using PKC to encrypt emails, ensuring that only intended recipients can decrypt and read the messages.

Industries:

Technology
Finance

Platforms:

Gmail
Outlook
Cryptocurrency Transactions

Enabling cryptocurrency wallets to secure their transactions through public addresses (public keys) and secret recovery phrases (private keys).

Industries:

Finance
Investments

Platforms:

Bitcoin
Ethereum
Secure File Sharing

Protecting files in transit by encrypting them with a public key to ensure that only the holder of the corresponding private key can decrypt and access the data.

Industries:

Healthcare
Legal

Platforms:

Dropbox
Google Drive

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