Match the following symmetric block ciphers with corresponding block and key sizes :
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Correct answer: B. a- ii, b-iv, c-i, d-iii
Explanation
DES: 64-bit block, 64-bit key including parity (ii). IDEA: 64-bit block, 128-bit key (iv). Blowfish: 64-bit block, 32–448-bit key (i). AES: 128-bit block, 128/192/256-bit keys (iii).
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