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Pre-shared key
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Mathematics
Fields of mathematics
Applied mathematics
Cryptography
Key management
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A
Pre-shared Key
(PSK) is
a
shared secret
, typically
a
string of characters, used in
cryptographic protocols
for
authentication
. This key is known by both the client and the server before the
secure communication
starts. PSKs are commonly used in various security protocols, including:
1
. **
Wi-Fi
Security**: In
Wi-Fi
networks
, PSKs are often used in WPA (
Wi-Fi
Protected Access) and WPA2 for securing the network.
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Key management
Cryptography
Applied mathematics
Fields of mathematics
Mathematics
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Pre-shared key
by
Ciro Santilli
37
Updated
2025-07-16
View more
An overview of what you can do with
a
pre-shared key
with tradeoffs can be found at:
quantumcomputing.stackexchange.com/questions/142/advantage-of-quantum-key-distribution-over-post-quantum-cryptography/25727#25727
The options are:
one-time pad
symmetric encryption
authentication
with some
message authentication code
protocol
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