17 lines
397 B
Ruby
17 lines
397 B
Ruby
class Utils
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def self.random_str(len)
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str = ""
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while str.length < len
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chr = OpenSSL::Random.random_bytes(1)
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ord = chr.unpack('C')[0]
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# 0 9 A Z a z
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if (ord >= 48 && ord <= 57) || (ord >= 65 && ord <= 90) || (ord >= 97 && ord <= 122)
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str += chr
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end
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end
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return str
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end
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end
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