module LetsShard::Digest
Constants
- X_MODEM_CRC16_LOOKUP
Public Instance Methods
crc16(key)
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# File lib/lets_shard/digest.rb, line 40 def crc16(key) result = 0 key.each_byte do |b| result = ((result << 8) & 0xffff) ^ X_MODEM_CRC16_LOOKUP[((result >> 8) ^ b) & 0xff] end result end