25 lines
678 B
Ruby
25 lines
678 B
Ruby
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module KennaKdi
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class SubdomainGenerator
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attr_accessor :tld, :base_domain
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def initialize(tld, base_domain)
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@tld = tld
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@base_domain = base_domain
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end
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def perform(year, month, day)
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# generating a subdomain.
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# https://en.wikipedia.org/wiki/Domain_generation_algorithm
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domain = ""
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16.times do
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year = ((year ^ 8 * year) >> 11) ^ ((year & 0xFFFFFFF0) << 17)
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month = ((month ^ 4 * month) >> 25) ^ 16 * (month & 0xFFFFFFF8)
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day = ((day ^ (day << 13)) >> 19) ^ ((day & 0xFFFFFFFE) << 12)
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domain += (((year ^ month ^ day) % 25) + 97).chr
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end
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domain + base_domain + tld
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end
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end
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end
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