SHA1 collision demo / example

Question

This question is similar to this, but that one only references MD5 collision demos.

Are there any actual SHA1 collision pairs of arbitrary messages known so far ?

Answer 1

The first known collision has now been published at https://shattered.it/

$ curl -sSO https://shattered.it/static/shattered-1.pdf
$ curl -sSO https://shattered.it/static/shattered-2.pdf

$ sha1sum *.pdf
38762cf7f55934b34d179ae6a4c80cadccbb7f0a  shattered-1.pdf
38762cf7f55934b34d179ae6a4c80cadccbb7f0a  shattered-2.pdf

$ sha256sum *.pdf
2bb787a73e37352f92383abe7e2902936d1059ad9f1ba6daaa9c1e58ee6970d0  shattered-1.pdf
d4488775d29bdef7993367d541064dbdda50d383f89f0aa13a6ff2e0894ba5ff  shattered-2.pdf