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You are here: Home / News / Vulnerability dalam implementasi SHA-3, Shake, EDDSA, dan algoritma yang disetujui NIST lainnya dalam implementasi SHA-3, Shake, EDDSA, dan algoritma yang disetujui NIST lainnya

Vulnerability dalam implementasi SHA-3, Shake, EDDSA, dan algoritma yang disetujui NIST lainnya dalam implementasi SHA-3, Shake, EDDSA, dan algoritma yang disetujui NIST lainnya

March 10, 2023 by Coffee Bean

Makalah ini menggambarkan vulnerability dalam beberapa implementasi algoritma hash aman 3 (SHA-3) yang telah dirilis oleh desainernya. vulnerability telah hadir sejak pembaruan putaran akhir Keccak diserahkan ke Kompetisi Fungsi Hash Institute of Standards and Technology (NIST) SHA-3 pada Januari 2011, dan hadir dalam Paket Kode Keccak (XKCP) yang diperluas dari Tim Keccak. Ini mempengaruhi semua proyek perangkat lunak yang telah mengintegrasikan kode ini, seperti bahasa skrip Python dan php hypertext preprocessor (PHP).

vulnerability adalah overflow buffer yang memungkinkan nilai yang dikendalikan penyerang menjadi eksklusif (XORED) ke dalam memori (tanpa batasan nilai yang harus disedot dan bahkan jauh di luar lokasi buffer asli), dengan demikian membuat banyak langkah perlindungan standar terhadap Buffer overflows (mis., Nilai kenari) sama sekali tidak efektif.

Pertama, kami menyediakan skrip Python dan PHP yang menyebabkan kesalahan segmentasi ketika versi rentan penafsir digunakan. Kemudian, kami menunjukkan bagaimana vulnerability ini dapat digunakan untuk membangun preimage dan preimage kedua untuk implementasi, dan kami menyediakan file yang dibangun secara khusus yang, ketika hash, memungkinkan penyerang untuk menjalankan kode sewenang -wenang pada perangkat korban. vulnerability berlaku untuk semua ukuran nilai hash, dan semua sistem operasi Windows, Linux, dan MacOS 64-bit, dan juga dapat memengaruhi algoritma kriptografi yang memerlukan SHA-3 atau variannya, seperti algoritma tanda tangan digital Edwards-Curve (EDDSA) Edward Ketika kurva Edwards448 digunakan. Kami memperkenalkan uji init-update-final (IUFT) untuk mendeteksi vulnerability ini dalam implementasi.

@misc{cryptoeprint:2023/331,
author = {Nicky Mouha and Christopher Celi},
title = {A Vulnerability in Implementations of SHA-3, SHAKE, EdDSA, and Other NIST-Approved Algorithm},
howpublished = {Cryptology ePrint Archive, Paper 2023/331},
year = {2023},
note = {\url{https://eprint.iacr.org/2023/331}},
url = {https://eprint.iacr.org/2023/331}
}

sumber : eprint.iacr.org

Tagged With: Cyber Attack, Cybersecurity, Vulnerability

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