CHAP offers stronger security through its challenge-response mechanism, while PAP is simpler but less secure due to the transmission of credentials in clear-text.

1. CHAP
CHALLENGE HANDSHAKE
AUTHENTICATION
PROTOCOL
PAP
PASSWORD
AUTHENTICATION
PROTOCOL
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Authentication
Mechanism
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Mutual
authentication
process, both the
client and the server
authenticate each
other's identities
One-way
authentication
process, only the
client authenticates
with the server
CHAP PAP
Swipe

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Password
Transmission
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Sends the
encrypted
password
Sends the
password in
plain text
CHAP PAP
Swipe

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Security
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More secure due to
the password not
being sent directly
and uses a
challenge-response
mechanism
Less secure due to
plain text password
transmission and
easily interceptable
CHAP PAP
Swipe

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Frequency
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Periodic
(frequent
re-authentication)
Authentication
typically occurs only
during the initial
connection setup
CHAP PAP
Swipe

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Complexity
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More complex and
sophisticated to
implement
Simpler to
implement
CHAP PAP
Swipe

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Vulnerabilities
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Resistant to
eavesdropping and
replay attacks
Vulnerable to
eavesdropping and
replay attacks
CHAP PAP
Swipe

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Use Cases
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Suitable for
long-lasting
connections
Suitable for
low-security
scenarios
CHAP PAP
Swipe

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