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lib/rex/crypto.rb
53 строки
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Spencer McIntyre
Make common byte to int conversion functions
26 фев 2025, 17:29
26 фев 2025, 17:29
b853168
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module Rex::Crypto # Returns an encrypted string using AES256-CBC. # # @deprecated Access via Rex::Crypto::Aes256 # @param iv [String] Initialization vector. # @param key [String] Secret key. # @return [String] The encrypted string. def self.encrypt_aes256(iv, key, value) Aes256.encrypt_aes256(iv, key, value) end # Returns a decrypted string using AES256-CBC. # # @deprecated Access via Rex::Crypto::Aes256 # @param iv [String] Initialization vector. # @param key [String] Secret key. # @return [String] The decrypted string. def self.decrypt_aes256(iv, key, value) Aes256.decrypt_aes256(iv, key, value) end # Returns a decrypted or encrypted RC4 string. # # @deprecated Access via Rex::Crypto::Rc4 # @param key [String] Secret key. # @param [String] def self.rc4(key, value) Rc4.rc4(key, value) end # Returns an integer represented as a byte array. Useful for certain key-related operations. # # @param bytes [String] The bytes to convert # @return [Integer] The converted value. def self.bytes_to_int(bytes) bytes.each_byte.reduce(0) { |acc, byte| (acc << 8) | byte } end # Returns a byte array represented as a big-endian integer. Useful for certain key-related operations. # # @param bytes [String] The bytes to convert # @return [Integer] The converted value. def self.int_to_bytes(num) bytes = [] while num > 0 bytes.unshift(num & 0xff) num >>= 8 end bytes.pack("C*") end end