Jan 07, 2020

Judging by the paper[1], I would say any or all of Inria, Nanyang Technological University, and Temasek Laboratories.

[1] https://eprint.iacr.org/2020/014.pdf

Jan 07, 2020

SHA-1 is a Shambles First Chosen-Prefix Collision on SHA-1 and Application to the PGP Web of Trust Gaƫtan Leurent and Thomas Peyrin

https://eprint.iacr.org/2020/014.pdf

>identical-prefix collisions can now be computed with a complexity of 2^61.2 rather than 2^64.7, and chosen-prefix collisions with a complexity of 2^63.4 rather than 2^67.1. When renting cheap GPUs, this translates to a cost of 11k US$ for a collision, and 45k US$ for a chosen-prefix collision

Jan 07, 2020

The full paper is https://eprint.iacr.org/2020/014.pdf if anyone is interested