Cryptol

{{Short description|Programming language for cryptography}}

{{Infobox programming language

|title = Cryptol

|developer = Galois, Inc.

|released = {{Start date and age|1980}}

|latest release version = 3.2.0

|latest release date = {{Start date and age|2024|08 |20}}

|programming language = Haskell, Python

| operating system = Linux, macOS, Windows

|platform = AArch64, x86-64

|license = BSD 3-clause

|website = {{URL|www.cryptol.net}}

}}

Cryptol is a domain-specific programming language for cryptography developed by the Portland, Oregon based software development firm, Galois, Inc.{{cite web |author= |date=December 2008 |title=Cryptol-the-language-of-cryptology-now-available |url=http://galois.com/blog/2008/12/cryptol-the-language-of-cryptography-now-available/ |access-date=2015-05-05}}[https://books.google.com/books?id=KtEpJSzyXSsC&dq=Cryptol+Logic+for+Programming,+Artificial+Intelligence,+and+Reasoning&pg=PA531 GoogleBook link]{{cite book |editor1-last=Sutcliffe |editor1-first=Geoff |editor2-last=Voronkov |editor2-first=Andrei |year=2006 |title=Logic for Programming, Artificial Intelligence, and Reasoning: 12th International Conference, LPAR 2005, December 2–6, 2005, Proceedings ... / Lecture Notes in Artificial Intelligence) |place=Montego Bay, Jamaica |publisher=Springer |pages=744 |isbn=978-3-540-30553-8}} It is free and open-source software released under a BSD 3-clause software license.

The language was originally developed for use by the United States National Security Agency.{{citation |title=The Next Wave, High Confidence Software and Systems (HCSS) |volume=19 |number=1 |year=2011 |url=http://www.nsa.gov/research/tnw/tnw191/articles/pdfs/tnw_19_1_web.pdf |access-date=2014-07-07 |url-status=dead |archive-url=https://web.archive.org/web/20140714184700/http://www.nsa.gov/research/tnw/tnw191/articles/pdfs/tnw_19_1_web.pdf |archive-date=2014-07-14}} The language is also used by private firms that provide information technology systems, such as the American company Rockwell Collins provides to aerospace and defense contractors in the United States.

The programming language is used for all aspects of developing and using cryptography, such as the design and implementation of new ciphers and the verification of existing cryptographic algorithms.{{cite book

|last1=Lewis

|first1=J.R.

|last2=Martin

|first2=B.

|contribution=Cryptol: high assurance, retargetable crypto development and validation

|title=Military Communications Conference, 2003. MILCOM 2003. IEEE

|volume=2

|issue=13–16

|pages=820–825

|publisher=Armed Forces Communications & Electronics Association (AFCEA); IEEE Communications Society

|date=October 2003

|location=Boston, Massachusetts

|doi=10.1109/MILCOM.2003.1290218 |s2cid=8380437

}} Cryptol is designed to allow a cryptographer to watch how stream processing functions in the program manipulate ciphers or encryption algorithms.