Tanja Lange is a prominent mathematician known for her work in the field of cryptography, particularly in the area of elliptic curve cryptography. She has contributed significantly to the development of secure communication methods and has published numerous research papers on the subject. In addition to her research, Tanja Lange is also involved in education and mentoring, helping to train the next generation of mathematicians and cryptographers. She has participated in various conferences and workshops, sharing her expertise and promoting advancements in mathematics and computer science.