COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What cryptographic algorithm is used by the NSA and includes the use of elliptical curves for digital signature generation and key exchange?
A
ECC
B
AES
C
IDEA
D
RSA
Explanation: 

Detailed explanation-1: -The Elliptic Curve Digital Signature Algorithm (ECDSA) is a Digital Signature Algorithm (DSA) which uses keys derived from elliptic curve cryptography (ECC).

Detailed explanation-2: -Elliptic Curve Cryptography (ECC) is a key-based technique for encrypting data. ECC focuses on pairs of public and private keys for decryption and encryption of web traffic. ECC is frequently discussed in the context of the Rivest–Shamir–Adleman (RSA) cryptographic algorithm.

Detailed explanation-3: -ECDSA is used to create ECDSA certificates, which is a type of electronic document used for authentication of the owner of the certificate.

Detailed explanation-4: -ECDSA (Elliptic Curve Digital Signature Algorithm) is based on DSA, but uses yet another mathematical approach to key generation. ECC is a mathematical equation taken on its own, but ECDSA is the algorithm that is applied to ECC to make it appropriate for security encryption.

Detailed explanation-5: -Let’s take an example: at the elliptic curve y2 ≡ x3 + 7 (mod 17) the point P 10, 15 can be compressed as C 10, odd. For decompression, we first calculate the two possible y coordinates for x = 10 using the above formulas: y1 = 2 and y2 = 15. Then we choose the odd one: y = 15. The decompressed point is 10, 15.

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