Computer Science > QUESTIONS & ANSWERS > ECES-Certified-Encryption-Specialist Questions and Answers Already Passed (All)
ECES-Certified-Encryption-Specialist Questions and Answers Already Passed .cer/.crt/.der ✔✔x.509 Digital Certificates extensions - Typically binary encoded. (.cer is Microsoft convention) AES ... Phases ✔✔1. SubBytes - non-linear substitution - uses Rijndael S-box 2. Shiftrows - transposition 3. MixColumns - mixing 4. AddRoundKey IKE ✔✔Internet Key Exchange - Used by IPSec for Key exchange. EC Formula ✔✔(y2 = x3 + Ax + B) - Developed by Victor Miller and Neil Koblitz in 1985 Rijndael Algorithm ✔✔Symmetric Algorithm used for AES 3 Cryptanalysis Resources ✔✔• Time (amount of time needed to perform the number of calculations to crack encryption) • Memory (the amount of storage required to perform the attack) • Data (the amount of plaintext/ciphertext required for the attack) Birthday Problem ✔✔How likely would it be for any two people in a room of 23 to share the same birthday? 22+21+20+19+18+17+16+15+14+13+12+11+10+9+8+7+6+5+4+3+2+1 = 253, the total number of combinations with 23 people. This is approximately a 50% chance for a match(square root of 365 is approximately 23). The probability reach [Show More]
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