期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2233&2234
页码：409-415
出版社：Newswood and International Association of Engineers
摘要：Information theory and cryptography recognize
'One-Time Pads' as 'Perfect Secrecy' in theory, however, until
today, they have remained impractical to use because of its key
management and key distribution problems, particularly in
having to generate and send a new key each time you need to
transmit a message. When a key is used more than once in the
One-Time Pad encryption scheme, it becomes vulnerable to a
pattern analysis attack (known-Plaintext attack). For this
reason, the same key must not be used more than once.This
problem can be resolved by modifying the algorithm and
enhancing the key so that any statistical relationship between
the plaintext and ciphertext will be completely concealed. The
methodology employed was a combination of some
cryptographic primitives to introduce diffusion into the system
and a simple randomized form of steganography to hide where
the encryption begins. The performance of the proposed
scheme was evaluated against the One-Time Pad when the
pads were used more than once and a cryptanalysis was
performed on both schemes. The result indicates that the
enhanced OTP algorithm was suitable to allow the same key
for limitless use of encrypting different Plaintext without
revealing any pattern. This will solve the key
management/distribution problem of having to send a new key
everytime a message is to be transmitted and this allows the
One-Time Pad scheme practical and allows the same key
generated during encryption to be reusable on other Plaintext
as many times as desired.
