Which two data integrity algorithms are commonly used in VPN solutions? (Choose two.)

The correct answer is C. HMAC-MD5 D. HMAC-SHA-1. Data integrity in VPNs is provided by HMAC (Hash-based Message Authentication Code) algorithms, which create a hash digest of the packet data using a shared secret key. HMAC-MD5 uses the MD5 hashing algorithm (128-bit digest), and HMAC-SHA-1 uses the SHA-1 algorithm (160-bit dige

Implement Wide-Area Networks

Question

Which two data integrity algorithms are commonly used in VPN solutions? (Choose two.)

Options

ADH1
BDH2
CHMAC-MD5
DHMAC-SHA-1
ERSA

How the community answered

(48 responses)

A
2% (1)
B
4% (2)
C
92% (44)
E
2% (1)

Explanation

Data integrity in VPNs is provided by HMAC (Hash-based Message Authentication Code) algorithms, which create a hash digest of the packet data using a shared secret key. HMAC-MD5 uses the MD5 hashing algorithm (128-bit digest), and HMAC-SHA-1 uses the SHA-1 algorithm (160-bit digest). Both are used in IPsec to verify that packets have not been altered in transit. DH1 and DH2 (Diffie-Hellman groups 1 and 2) are key-exchange algorithms used to securely negotiate encryption keys, not for data integrity. RSA is an asymmetric encryption and digital signature algorithm used for authentication, not for per-packet integrity checking.

Topics

#VPN#HMAC-MD5#HMAC-SHA-1#data integrity

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