Want know my work?

Academic texts

  • 'A Fast and Simple Partially Oblivious PRF, with Applications' with Nirvan Tyagi, Thomas Ristenpart, Nick Sullivan, Stefano Tessaro, and Christopher A. Wood. Find it here. Under submission.
  • 'Implementing and Measuring KEMTLS' with Armando Faz-Hernández, Nick Sullivan, Goutam Tamvada, Luke Valenta, Thom Wiggers, Bas Westerbaan and Christopher A. Wood. Conference paper. To be published on International Conference on Cryptology and Information Security in Latin America 2021.

Published text

I'm currently writing many crazy things . Still, I have some published texts:

  • 'No evidence of communication: Off-The-Record Protocol version 4'. Find it here. This extended abstract was written for HotPETS from PETS2018.
  • 'Privacy and deniability by design: Off-the-Record messaging version 4'. Find it here. This extended abstract was written for PUT2019.
  • 'The current state of denial'. Find it here. This extended abstract was written for HotPETS from PETS2020. This is a joint collaboration with Iraklis Symeonidis.
  • Contributor at 'Oblivious Pseudorandom Functions (OPRFs) using Prime-Order Groups'. Find it here.
  • Author of 'Privacy Pass: The Protocol'. Find it here.
  • Author of 'Definition of End-to-end Encryption'. Find it here.
  • Reviewer and happy collaborator to 'Crypto Dictionary' from the amazing JP Aumasson. Find it here.
  • Blogpost at Cloudflare with Thom Wiggers: "KEMTLS: Post-quantum TLS without signatures". Find it here.
  • "On the Importance of Understanding Memory Handling" for Welcome to the Jungle. Find it here.

Groups I'm part of

  • The amazing Cloudflare Cryptography Team
  • Collaborating with Open Quantum Safe (OQS)
  • Criptógrafas Latinoamericanas

Organizer

I love organizing summits and gatherings:

  • Latin American cryptographers group. Are you a Latin American working in Cryptography? Ping me!
  • OTRv4 summit colocated with PETS2019, Stockholm, Sweden. Find more information here and here.
  • Secure messaging summit 2020. Find more information here.
  • Meeting around Deniability at Real World Crypto 2021. Find more information here.
  • Informal meeting around Anonymous Credentials at Real World Crypto 2021. Find more information here.
  • Workshop on digital rights for latin american women at Taller de Comunicación Mujer.
  • UPCOMING: Second meeting around Anonymous Credentials. Find more information here.
  • UPCOMING: Post-quantum cryptography and networks (PQNet). Find more information here.
  • UPCOMING: Criptolatino: the latin american community of cryptographers workshop at LatinCrypt2021. Details to be published soon.

Reviews/Advisor

I'm part of the review committee for these events:

  • PETS2020: Artifact Review Committee. See what is it about here
  • USENIX: Artifact Review Committee. See what is it about here.
  • PETS2021: Artifact Review Committee. See what is it about here

I'm a technical advisor for:

I moderate talks on:


Grants/Sponsorships received

For my work, I sometimes receive grants or sponsorships:

  • NLnet and NGIO Zero: NGI0 PET Fund, 2020. A grant received for continue working on the OTRv4 project. Find more information here.
  • Cloudflare: Sponsorship for Cryptography Research, 2020.
  • USENIX Security '20: Diversity grant.
  • Grant to attend HACS.
  • Article19: Grant to attend IETF106.

Awards

  • Academic scholarship for high school studies.
  • Academic scholarship for University studies from Universidad Católica del Ecuador: 2012-2017.
  • Roll of honor: Conservatorio Nacional de Música.

Interviews

I've given some interviews:

  • Cryptography FM. Find it here.
  • Radios Libres. Find it here.
  • The Daily Swig, around KEMTLS. Find it here.
  • GK, around learning to program and childhood. Find it here.

Talks

I've given tons of talks:

  • Elliptic Curves: from magic to Goldilocks at CryptoRave2018, São Paulo, Brazil (2018).
  • "No evidence of communication: Off-The-Record Protocol version 4" at PETS2018, Barcelona, Spain. Watch the talkhere.
  • "No evidence of communication: OTRv4 (Off-the-Record) v4" at the Privacy Enhancements and Assessments Proposed Research Group (PEARG) from IETF 103 (2018).
  • "No evidence of communication and morality in protocols: Off-the-Record protocol version 4", at the 35th Chaos Computer Congress (35c3), Leipzig, Germany. Watch the talkhere.
  • "Deniability in a group chat setting" at the Message Layer Security (MLS) group from IETF (2019).
  • "Deniability in a group chat setting" at the Message Layer Security (MLS) group from IETF (2019).
  • "No evidence of communication and implementing a protocol: Off-the-Record protocol version 4" at FOSDEM 2018, Brussels, Belgium. Watch the talkhere.
  • "Clang tools for implementing cryptographic protocols like OTRv4" at Euro Developers meeting 2018, Brussels, Belgium. Watch the talkhere.
  • "A case around secure messaging: OTRv4" at the Computer Security and Industrial Cryptography (COSIC) from the Katholieke Universiteit Leuven, Leuven, Belgium. Watch the talkhere.
  • "The loss of the sovereignty in privacy" at Security in Times of Surveillance event, Eindhoven, The Netherlands. Watch the talk here.
  • "A case around secure messaging: OTRv4" at EI/Ψ seminar from the Eidenhoven University of Technology, Eindhoven, The Netherlands, 2019. Find more informationhere.
  • "A case around secure messaging: OTRv4" at DS Colloquium from the Radboud University in Nijmegen, The Netherlands, 2019. Find the information here.
  • "Privacy and deniability by design: Off-the-Record messaging version 4" at the Open Day for Privacy, Usability, and Transparency (PUT 2019) from PETS2019 at Stockholm, Sweden. Find the information here.
  • "A case around secure messaging: OTRv4" at the Ss. Cyril and Methodius University in Skopje, Macedonia, 2019. Find the information here.
  • "Off-the-Record" at HotRFC from IETF 106 at Singapore, Singapore, 2019. Find the information here.
  • "Security and privacy, an unsustainable balance" at Our Data, Our Future: Radical Tech for a Democratic Digital Society from DECODE, Turin, Italy, 2019. Find the information here.
  • "The state of secure messaging: the case of OTR" at "Critical Decentralisation Cluster" at the 36th Chaos Computer Congress (36c3), Leipzig, Germany, 2019. Find the information here.
  • "Communicating in private way: should we care?" at "Critical Decentralisation Cluster": part of the panel, 2020. Find the information here.
  • "A case around secure messaging: OTRv4" at the University of Luxembourg City, Luxembourg, 2020.
  • "Communicating in private way: should we care?" at "Legal Hackers Meetup": part of the panel, 2020. Find the information here.
  • "Why Golang" at Women Who Go Paris, 2020. Find the information here.
  • "The current state of denial" at HotPETS from PETS2020. Find the information here.
  • "The devil is in the detail: designing and implementing the 4th version of the Off-the-Record messaging protocol" at The 8th Technion Summer School on Cyber and Computer Security Privacy in Challenging Times. Find the information here.
  • "The double-ratchet algorithm: its security and privacy properties" at Cryptography Meetup. Find the information here.
  • "Las siete vidas de un gato post-quántico" with Armando Faz for CFTV from Cloudflare. Find the information here.
  • "The state of digital rights in Latin America", happening at rc3.Find the recording here.
  • "Post-quantum TLS without handshake signatures" with Peter Schwabe, Douglas Stebila, Thom Wiggers and Armando Faz at Real World Crypto 2021. Find the information here.
  • "'I thought I was being strong with a complicated person': the tales of intimate gender-based online abuse in the Global South" at Enigma2021, a Usenix Conference. Find the information here.
  • "The state of denial" at the Research Seminar in the Information Security Group at Royal Holloway. Find the information here.
  • "DMLS: Deniable MLS" at MLS Working Group, IETF110. Find the information here.
  • "OPAQUE with TLS 1.3" at TLS Working Group, IETF110. Find the information here.
  • "Anonymous Credentials: Highlights from the meeting" at Privacy Pass Working Group, IETF110.
  • "KEMTLS" with Thom Wiggers for CFTV from Cloudflare. Find the information here.
  • "Introducción a la Criptografía" at Kriptos (internal talk).
  • "A Fast and Simple Partially Oblivious PRF, with Applications" with Nirvan Tyagi at Brave Browser Meeting (internal talk).
  • "PO-PRFs" at CFRG at IETF111 with Armando Faz-Hernández. Find the information here.
  • "Public Metadata and Privacy Pass" at IETF111. Find the information here.
  • "Authentication with KEMs for TLS1.3" with Thom Wiggers at IETF111. Find the information here.
  • "End-to-end encryption" with Mallory Knodell at SecDispatch at IETF111. Find the information here.
  • "Gallery of Latin American Malware" at SOUPS2021. Find the information here.
  • "Implementing and Measuring KEMTLS" at Google Cryptographic Group with Armando-Faz Hernández.
  • "Introductions to networks and post-quantum algorithms using isogenies" at Isogeny-based Cryptography School. Find the information here.
  • "How private is secure messaging?". Invited Lecture at the Conference on Selected Areas in Cryptography (SAC2021). Find the information here.
  • UPCOMING: "OPRFs: what they are, new constructions and new applications" at TII CRC Seminar Series.
  • UPCOMING: "Implementing and Measuring KEMTLS" at Latincrypt2021.
  • UPCOMING: "OPRFs: past and future" at the Cornell's Security Seminar.
  • UPCOMING: "Desde curvas elípticas a teoría quántica: Qué es la criptografía?" at the Congreso Trascendencias, Universidad Campus Mexicali.
  • UPCOMING: "Introduction to Cryptography" at the 21st edition of Semana de Informática at the Faculty of Engineering of the University of Porto, Portugal.