Secure Data Sharing and Distribution Platform
for Integrated Big Data Utilization
- Handling all data with encryption -

About Project

Our project called "Constructing an infrastructure for secure data sharing and distributing, accelrating integrated bigdata utilization" is 5.5-year national project, which started in 2015. This is a sub-project of "Advanced Core Technologies for Big Data Integration" run by JST CREST.

Our Solution

An infrastructure where providers can trust data on, users can get results from and make use of them trustfully, is required today. We do not relay on "Anonimization" or "Encryption during transmission", and aim to construct an open-source library for data mining which handles data on an encrypted state. We are optimizing it from the aspects of both cryptology and computer architecture, making it more than 1000 times faster than today's scheme.

Our Partners

Waseda University

Institute of Information Security

Kogakuin University

Meiji Pharmaceutical University

The University of Electro-Communications

Ochanomizu University


  • Domestic papers:

    • 今林広樹,石巻優,馬屋原昂,佐藤宏樹,山名早人:"完全準同型暗号による安全頻出パターンマイニンク計算量効率化",情報処理学会トランザクション・データベース(TOD), (2017. 3)[paper]

  • Domestic Conferences/Workshops:

    • 馬屋原 昂,佐藤 宏樹,石巻 優,今林 広樹,山名 早人:" FCMalloc: 完全準同型暗号の高速化に向けたメモリアロケータ", 第141回システムソフトウェアとオペレーティング・システム研究会, 情処研報, Vol..2017-xx, No.6 (2017.7.26-27)

    • 有田 正剛, 中里 翔太:"Fully Homomorphic Encryption For Point Numbers", 2016 Symposium on Cryptography and Information Security (SCIS2016), 1E1-5 (2016.1)

    • 石巻 優, 清水 佳奈, 縫田 光司, 山名 早人:"完全準同型暗号を用いた高速なゲノム秘匿検索", 2016 Symposium on Cryptography and Information Security (SCIS2016), 2A2-2 (2016.1)

    • 髙橋 卓巳, 石巻 優, 山名 早人:"SVパッキングによる完全準同型暗号を用いた安全な委託Aprioriの高速化", DEIM2016, F8-6 (2016.3)

    • 佐藤 宏樹, 馬屋原 昂, 石巻 優, 今林 広樹, 山名 早人: "完全準同型暗号のデータマイニングへの利用に関する研究動向", FIT2016, F-002 (2016.9)

    • 安村 慶子, 石巻 優, 今林 広樹, 山名 早人: "A Survey on Attribute-based Encryption and its Application in Cloud and Mobile Environment", FIT2016, L-009 (2016.9)

    • Seiko Arita, Sari Handa: "Subring Homomorphic Encryption", 2017年暗号と情報セキュリティシンポジウム, SCIS 2017, 3F2-4 (2017.1)

    • 馬屋原昂,今林広樹,山名早人: "NUMAマシンにおける完全準同型暗号による安全頻出パターンマイニングの高速化",データ工学と情報マネジメントに関するフォーラム(DEIM2017), A1-1(2017.3)

    • 今林広樹,石巻優,馬屋原昂,佐藤宏樹,山名早人:"ストリーム処理による安全頻出パターンマイニングの高速化",データ工学と情報マネジメントに関するフォーラム(DEIM2017), A1-2(2017.3)

    • 佐藤宏樹,馬屋原昂,石巻優,山名早人:"完全準同型暗号による秘密計算回路のループ最適化とk最近傍法への適用",データ工学と情報マネジメントに関するフォーラム(DEIM2017), H6-3(2017.3)

    • 宇佐美 文梨,小口 正人:"Aprioriアルゴリズムにおける完全準同型暗号を用いた秘密計算の並列分散処理の実装と評価",データ工学と情報マネジメントに関するフォーラム(DEIM2017), A1-3(2017.3)

    • 山本 百合,小口 正人:"完全準同型暗号によるゲノム秘匿検索の分散処理",データ工学と情報マネジメントに関するフォーラム(DEIM2017), H4-4(2017.3)

    • 藤島 永太,中島 健司,近 丈一郎,山口 実靖:"ビッグデータ統合利用基盤における大規模I/O性能の向上",データ工学と情報マネジメントに関するフォーラム(DEIM2017), H5-3(2017.3)

  • International Journals:

  • International Conferences/Workshops:

    • Yu Ishimaki and Hayato Yamana:"Non-Interactive and Fully Output Expressive Private Comparison," Proc. of 19th International Conference on Cryptology in India (INDOCRYPT 2018) (to appear)

    • Hiroki Sato, Akira Umayabara, Yu Ishimaki, Hayato Yamana:"Poster: Loop Circuit Optimization with Bootstrapping over Fully Homomorphic Encryption," Proc. of 2nd IEEE European Symposium on Security and Privacy(EUROS&P2017) (2017.4)

    • Yu Ishimaki, Hiroki Imabayashi and Hayato Yamana,Private Substring Search on Homomorphically Encrypted Data, Proc. of the 1st IEEE Int'l Workshop on Big Data and IoT Security in Smart Computing (2017.5)

    • Akira Umayabara:"FCMalloc: A Fast Memory Allocator for Fully Homomorphic Encryption,"PLDI 2017 PLDI Student Research Competition (2017.6)

    • Sajal K. Das, Hayato YAMANA:"Securing Big Data and IoT Networks in Smart Cyber-Physical Environments," Proc. of ACM International Conference on Smart Digital Environment 2017(ICSDE2017) (2017.7.21-23)

    • Hayato YAMANA: "Secure Data Sharing and Distribution Platform for Integrated Big Data Utilization," 2016 NSF BIGDATA PI MEETING (2016.4.21-22)

    • Yu Ishimaki, Kana Shimizu, Koji Nuida and Hayato Yamana: "Poster: Privacy-Preserving String Search for Genome Sequences using Fully Homomorphic Encryption," Proc. of the 37th IEEE Symp. on Security and Privacy (2016.5)[paper][poster]

    • Hiroki Imabayashi, Yu Ishimaki, Akira Umayabara, Hiroki Sato and Hayato Yamana: "Secure Frequent Pattern Mining by Fully Homomorphic Encryption with Ciphertext Packing", 11th International Workshop on Data Privacy and Management (DPM2016), session: Security and Secure Applications (2016.9)[paper][slide]

    • Seiko Arita and Shota Nakasato : "Fully Homomorphic Encryption for Point Numbers", Proc. of the 12th International Conference on Information Security and Cryptology 2016 (2016. 11)[paper]

    • Hiroki Imabayashi, Yu Ishimaki, Akira Umayabara and Hayato Yamana: "Fast and Space-Efficient Secure Frequent Pattern Mining by FHE", Proc. of IEEE International Conference on Big Data 2016 (2016.12)[paper]

    • Yu Ishimaki, Hiroki Imabayashi, Kana Shimizu and Hayato Yamana: "Privacy-Preserving String Search for Genome Sequences with FHE bootstrapping optimization", Proc. of IEEE International Conference on Big Data 2016 (2016.12)[paper]

Open Source

  • FCMalloc: A Fast Memory Allocator for Fully Homomorphic Encryption

  • MCMalloc: A Scalable Memory Allocator for Multithreaded Applications on a Many-Core Shared-Memory Machine