14.3 The 1988 version of X.509 lists properties that RSA keys must satisfy to be secure given current knowledge about the difficulty of factoring large numbers. The discussion concludes with a constraint on the public exponent and the modulus n: It must be ensured that e 7 log2(n) to prevent attack by taking the eth root mod n to disclose the plaintext. Although the constraint is correct, the reason given for requiring it is incorrect. What is wrong with the reason given and what is the correct reason? | |
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