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Converting messages into numbers in order to apply mathematical operations:
1. take the ordinal bytes of the message
2. convert them into hexadecimal
3. concatenate
-> this is interpreted as a base-16/hexadecimal number (also can be represented in base-10/decimal)
ex)
message: HELLO
ascii bytes: [72, 69, 76, 76, 79]
hex bytes: [0x48, 0x45, 0x4c, 0x4c, 0x4f]
base-16: 0x48454c4c4f
base-10: 310400273487
quiz)
Convert the following integer back into a message:
11515195063862318899931685488813747395775516287289682636499965282714637259206269
풀이
⭐️ PyCryptodome 라이브러리의 long_to_bytes() / bytes_to_long() 메서드를 사용하여 구할 수 있음!!
결과:
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