Kiberxavfsizlik asoslari

2.5. TEA shifrlash algoritmi haqida (blokli)
TEA shifrlash algoritmi Simmetrik blokli shifrlash algoritmi hisoblanadi.

2.4-rasm. TEA shifrlash algoritmi.
https://ikiwi.net.ar/calculadoras/tna-a-tea/ biz bu link orqali TEA shifrlash algoritmi orqali bevosita ma’lumotlarni shifrlashimiz mumkin.
Xulosa.
Xulosa qilib shuni aytadigan bo’lsam Kiberxavfsizlik fani ma’lumotlarni xavfsizligini taminlaydi. Ya’ni ma’lumotlarga bo’layotgan xujumlardan himoya qiladi. Bevosita buni kriptalogiya o’rganadi.
Kriptalogiya asosan ikka bo’lib o’rgandik: Simmetrik shifrlash algoritmi va Assimetrik shifrlash algoritmi.
Demak simmetrik shifrlash algoritmida kalitlar teng bo’ladi ya’ni k₁=k₂ . Simmetrik shifrlash algoritmi ham o’z novbatida ikkiga bo’linadi Simmetrik blokli shifrlash algoritmi va Simmetrik oqimli shifrlash algoritmi.
Simmetrik oqimli shifrlash algoritmiga misol qilib A5/1 shifrlash algoritmi , RC4 shifrlash algoritmini olishimiz mumkin.
Simmetrik blokli shifrlash algoritmiga misol qilib DES shifrlash algoritmi, AES shifrlash algoritmi, TEA shifrlash algoritmi, Blowfish, Twofish kabi shifrlash algoritmlarini olishimiz mumkin.
Assimetrik shifrlash algoritmida esa kalitlar ikki xil bo’ladi ya’ni k₁ ≠ k₂ bo’ladi. Bu shifrlash algoritmni Ochiq kalitli krptotizmlar deb ham ataymiz. Qisqa qilib aytganda men Simmetrik shifrlash algoritmiga tushundim va qo’limdan kelganicha yoritishga harakat qildim.
Foydalanilgan adabiyotlar ro’yxati.

1. 
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2. 
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3. 
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4. 
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6. 
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7. 
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8. 
   https://www.hhs.gov/sites/default/files/breach-report-to-congress-2015-2016- 2017.pdf 28. http://smartkardtechnologies.com/productdetails/acr39u-smart-cardrader
   
9. 
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10. 
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11. 
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13. 
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14. 
    https://en.wikipedia.org/wiki/Zimmermann_Telegram