# Taher Elgamal

> American cryptographer

**Wikidata**: [Q910915](https://www.wikidata.org/wiki/Q910915)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Taher_Elgamal)  
**Source**: https://4ort.xyz/entity/taher-elgamal

## Summary
Taher Elgamal is an American cryptographer known for developing the ElGamal encryption system, a foundational public-key cryptographic algorithm. He is also recognized for his contributions to secure communications, including work on SSL/TLS, and his leadership roles in tech companies like HP Labs and Salesforce.

## Biography
- Born: 1955-08-18 (Cairo, Egypt)
- Nationality: Egypt, United States
- Education: Cairo University, Stanford University
- Known for: ElGamal encryption and signature schemes, contributions to secure communications
- Employer(s): HP Labs (1984), Netscape (1995–1998), Salesforce (2013, as CTO)
- Field(s): Cryptography, computer science

## Contributions
Taher Elgamal is best known for his work on the ElGamal cryptosystem, a public-key encryption algorithm published in 1985. This system, based on the discrete logarithm problem, became a cornerstone of modern cryptography. He also developed the ElGamal signature scheme, which is widely used in digital signatures. His research at HP Labs in the 1980s laid the groundwork for secure communications, influencing later developments like SSL/TLS. Elgamal later led technical teams at Netscape and Salesforce, shaping the security infrastructure of the internet. He received the Marconi Prize in 2019 for his contributions to secure communications.

## FAQs
### Q: What is Taher Elgamal famous for?
A: Taher Elgamal is famous for developing the ElGamal encryption system, a key public-key cryptographic algorithm, and for his work on secure communications.

### Q: Where did Taher Elgamal study?
A: Taher Elgamal studied at Cairo University and Stanford University.

### Q: What companies has Taher Elgamal worked for?
A: He worked at HP Labs, Netscape, and served as CTO at Salesforce.

### Q: What award did Taher Elgamal receive?
A: He received the Marconi Prize in 2019 for his contributions to secure communications.

### Q: What is the ElGamal cryptosystem?
A: The ElGamal cryptosystem is a public-key encryption algorithm based on the discrete logarithm problem, developed by Taher Elgamal in 1985.

## Why They Matter
Taher Elgamal's work on the ElGamal cryptosystem revolutionized secure communications, providing a foundational method for public-key encryption. His research at HP Labs in the 1980s influenced later developments in cryptography, including SSL/TLS, which secures billions of online transactions daily. As a leader at Netscape and Salesforce, he played a pivotal role in shaping the security infrastructure of the internet. His contributions have had a lasting impact on cybersecurity, ensuring the confidentiality and integrity of digital communications.

## Notable For
- Developed the ElGamal encryption system (1985), a foundational public-key cryptographic algorithm.
- Received the Marconi Prize (2019) for contributions to secure communications.
- Led technical teams at Netscape and served as CTO at Salesforce.
- Educated at Cairo University and Stanford University.
- Co-authored the ElGamal signature scheme, widely used in digital signatures.

## Body
### Early Life and Education
Taher Elgamal was born on August 18, 1955, in Cairo, Egypt. He earned his education at Cairo University and later at Stanford University, where he studied under Martin Edward Hellman, a pioneer in cryptography.

### Cryptographic Contributions
In 1985, Elgamal published the ElGamal cryptosystem, a public-key encryption algorithm based on the discrete logarithm problem. This work became a cornerstone of modern cryptography. He also developed the ElGamal signature scheme, which is used in digital signatures.

### Professional Career
Elgamal began his career at HP Labs in 1984, where he contributed to secure communications. He later joined Netscape from 1995 to 1998, where he worked on SSL/TLS, which secured online communications. In 2013, he served as CTO at Salesforce, focusing on cloud security.

### Awards and Recognition
In 2019, Elgamal received the Marconi Prize for his development of SSL/TLS and other contributions to secure communications. His work has been widely cited and implemented in cybersecurity standards.

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## References

1. datos.bne.es
2. [Source](http://www.nndb.com/lists/954/000105639/)
3. [Source](http://www.nndb.com/lists/497/000063308/)
4. [Source](http://www.nndb.com/people/136/000024064/)
5. Freebase Data Dumps. 2013
6. Quora