NPWP ENCRYPTION USES A COMBINATION OF ONE TIME PAD ALGORITHM AND EXCLUSIVE-OR OPERATION

Margaretha Pasaribu; Sherli Yurinanda; Niken Rarasati

doi:10.33541/edumatsains.v8i2.5039

Margaretha Pasaribu Universitas Jambi
Sherli Yurinanda Universitas Jambi
Niken Rarasati Universitas Jambi

DOI: https://doi.org/10.33541/edumatsains.v8i2.5039

Keywords: NPWP, Cryptography, One Time Pad, Exclusive-OR, Blum Blum Shub

Abstract

Nomor Pokok Wajib Pajak (NPWP) is the 20 distinct code characteristics that are confidential only to the taxpayer when it comes
to making tax transactions. The many tax payers who use NPWP others in their business activities make NPWP a very important
aspect of maintaining confidentiality and the authenticity of their data. Therefore, solutions are needed that can be used to make
the necessary information secure. Cryptography involves the secret science of code writing using certain mathematical models.
The study discusses NPWP encryption using a combination algorithm One Time Pad (OTP) and an operation Exclusive-OR
(XOR). The encryption process involves generating random numbers for an OTP algorithm, after which it is followed by an XOR
operation. The key on XOR encryption is generated from an algorithm generating random numbers Blum Blum Shub. Encryption
keys generated as much as the number of plaquic characters. The encryption keys used by each character would vary and not
occur again. Therefore, ciphertext results from an encrypted process using an OTP algorithm and an XOR operation more
complicated and more difficult to decipher by crypts.

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https://mediasuara.com/2020/08/18/jangan-gunakan-npwp-orang-lain-atau-faktur-tbts-untuk-kegiatan-usaha-anda/ diakses pada tanggal 10 Maret 2023.