Yiqun Lisa Yin
chinese-American mathematician
Yiqun Lisa Yin (Chinese: 殷益群; pinyin: Yīn Yìqún) is a Chinese-American cryptographer and independent security consultant. Yin is known for breaking the SHA-1 cryptographic hash function, for developing the RC6 block cipher, and for her service as editor of the IEEE P1363 project for the standardization of public-key cryptography.
Education and career
Yin was a student at Peking University from 1985 to 1989, and earned a bachelor's degree in applied mathematics there. She went to the Massachusetts Institute of Technology for graduate study, and completed her Ph.D. there in applied mathematics in 1994. Her dissertation, Teaching, Learning, and Exploration, concerned computational learning theory and online algorithms; it was supervised by Michael Sipser.
She worked as a researcher at RSA Laboratories from 1994 to 1999, and as director of security technologies at NTT's Palo Alto Laboratory for Multimedia Communications from 1999 to 2002, before becoming an independent consultant. She also worked as a visiting researcher at Princeton University and Tsinghua University. From 2016 to 2019, Yin was the chief security officer and chief cryptographer of Symbiont.
Contributions
Yin was the editor of the IEEE P1363 project for the standardization of public-key cryptography. With Ron Rivest, Matt Robshaw, and Ray Sidney, she was one of the designers of RC6, a block cipher with symmetric keys that was one of five finalists for the 1997–2000 Advanced Encryption Standard competition.
The public source identifies “Yiqun Lisa Yin” as chinese-American mathematician. This brief keeps that definition visible, then builds a research path around Yiqun, Lisa and chinese-American.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Yiqun Lisa Yin”, the useful work is to connect “chinese-American mathematician” to the records capable of establishing context and consequence.
The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Dec 25, 2025. The linked authority identifier is Q69596743. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1985, 1989, 1994 and 1999.
Public reputation and documentary evidence do not always develop together; absence from a summary is not evidence of historical absence. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.
- Establishing names and roles
- Building a first chronology
- Locating cited institutions
Personal papers, civil or court records, institutional files and the scholarship cited by the source.
Three-step research path
- Establish the record: confirm the title “Yiqun Lisa Yin”, its source revision and the description used here.
- Expand the search: follow Yiqun Lisa Yin primary sources, Yiqun Lisa Yin archive and Yiqun research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Yiqun Lisa Yin”?
- How has the subject’s reputation changed across later accounts?
- Which claims depend on a single source or contested interpretation?
Search terms from this dossier
This entry incorporates text from “Yiqun Lisa Yin” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.