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94 lines
3.3 KiB
Markdown
94 lines
3.3 KiB
Markdown
Network Working Group []{.box} T. Developer\
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Internet Engineering Task Force (IETF) []{.box} (Your Organization)\
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Request for Comments: XXXX []{.box} (Your Email)\
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Category: Informational []{.box} (Today's Date)
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[RFC SULA-ALUS: A REVERSAL ENCRYPTION ALGORITHM]{align="center"}
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# Status of This Memo
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This memo provides information for the Internet community. It does not
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specify an Internet standard of any kind. Distribution of this memo is
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unlimited.
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# Abstract
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This document describes the SULA-ALUS encryption algorithm---a
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lightweight, reversible transformation whose principal operation is to
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reverse the input plaintext. The algorithm's name pays homage to the
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Latvian wordplay where reversing "sula" gives "alus." Although trivial
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in its operation, this algorithm may serve educational, demonstrative,
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or low-risk obfuscation purposes.
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# Introduction
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The SULA-ALUS algorithm is founded on a straightforward principle:
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encryption is performed by reversing the order of characters (or bytes)
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of the input data. While the transformation is simple and not intended
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for modern security-critical applications, it can be useful in contexts
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where a reversible obfuscation method is acceptable or for educational
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purposes.
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# Conventions Used in This Document
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The key words "MUST," "SHOULD," and "MAY" are to be interpreted as
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described in RFC 2119 [@rfc-2119].
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# The Reversal Encryption Algorithm
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The core idea behind SULA-ALUS is that the encryption operation is
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identical to the decryption operation -- they both consist of reversing
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the input sequence.
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## Encryption Process
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Let $P$ represent the plaintext composed of a sequence of characters:
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$$P = p_{1},p_{2},\ldots,p_{n}$$
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The ciphertext $C$ is produced by applying the reversal transformation:
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$$C = \text{ reverse}(P) = p_{n},p_{n - 1},\ldots,p_{1}$$ For example,
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if $P = \text{ sula}$, then: $$C = \text{ alus }$$
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## Decryption Process
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Given that the reversal operation is an involution (its own inverse),
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the decryption process involves applying the same transformation. Let
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$C$ be the ciphertext; then the plaintext $P$ is recovered as:
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$$P = \text{ reverse}(C)$$
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# Implementation Considerations
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A simple pseudocode implementation of the algorithm is as follows:
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function encrypt(plaintext):
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return reverse(plaintext)
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function decrypt(ciphertext):
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return reverse(ciphertext)
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This algorithm may be implemented in any programming language. It is
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important to note that due to its simplicity, SULA-ALUS is only
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appropriate for applications where robust cryptographic security is not
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a requirement.
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# Security Considerations
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The SULA-ALUS algorithm offers minimal protection and should not be used
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as a substitute for established cryptographic methods. Its reversible
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nature and lack of key-dependent randomness make it vulnerable to
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trivial analysis and brute-force reversal. Users are cautioned against
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employing this algorithm in scenarios where the confidentiality or
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integrity of sensitive data is paramount.
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# IANA Considerations
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This document has no actions for the Internet Assigned Numbers Authority
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(IANA).
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# Acknowledgments
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The authors thank the community for insights into minimalist
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cryptographic mechanisms and for inspiring creative approaches that
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celebrate cultural references---in this case, the reversal of the
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Latvian word "sula" to "alus."
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