Sha256: 0ad80425f87219b478bb639f2abf0fa3b54f1980399285cde095f348dd3ad76b
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Size: 1.09 KB
Versions: 13
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Stored size: 1.09 KB
Contents
# -*- coding: binary -*-
module Rex
module Text
# We are re-opening the module to add these module methods.
# Breaking them up this way allows us to maintain a little higher
# degree of organisation and make it easier to find what you're looking for
# without hanging the underlying calls that we historically rely upon.
#
# Calculate the block API hash for the given module/function
#
# @param mod [String] The name of the module containing the target function.
# @param fun [String] The name of the function.
#
# @return [String] The hash of the mod/fun pair in string format
def self.block_api_hash(mod, fun)
unicode_mod = (mod.upcase + "\x00").unpack('C*').pack('v*')
mod_hash = self.ror13_hash(unicode_mod)
fun_hash = self.ror13_hash(fun + "\x00")
"0x#{(mod_hash + fun_hash & 0xFFFFFFFF).to_s(16)}"
end
#
# Calculate the ROR13 hash of a given string
#
# @return [Fixnum]
def self.ror13_hash(name)
hash = 0
name.unpack("C*").each {|c| hash = ror(hash, 13); hash += c }
hash
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems