Compared to RSA, which of the following is true of Elliptic Curve Cryptography(ECC)?

The correct answer is D. It is believed to require shorter keys for equivalent security. ECC achieves equivalent cryptographic strength to RSA with significantly smaller key sizes. For example, a 256-bit ECC key provides roughly the same security as a 3072-bit RSA key. This makes ECC more efficient in terms of computation, memory, and bandwidth - especially…

Submitted by sofia.br· Apr 18, 2026Cryptography

Question

Compared to RSA, which of the following is true of Elliptic Curve Cryptography(ECC)?

Options

AIt has been mathematically proved to be more secure.
BIt has been mathematically proved to be less secure.
CIt is believed to require longer key for equivalent security.
DIt is believed to require shorter keys for equivalent security.

How the community answered

(50 responses)

A
2% (1)
B
2% (1)
C
6% (3)
D
90% (45)

Explanation

ECC achieves equivalent cryptographic strength to RSA with significantly smaller key sizes. For example, a 256-bit ECC key provides roughly the same security as a 3072-bit RSA key. This makes ECC more efficient in terms of computation, memory, and bandwidth - especially valuable for mobile and IoT devices. Neither ECC nor RSA has been mathematically proven more or less secure than the other in absolute terms; their security is based on different hard mathematical problems (elliptic curve discrete logarithm for ECC vs. integer factorization for RSA).

Topics

#Elliptic Curve Cryptography (ECC)#RSA#Asymmetric Cryptography#Key Length

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