Yes, SHA-1 has been cracked, but that doesn’t mean your code in Git repositories is in any real danger of being hacked.
The real worry about Google showing SHA-1 encryption is crackable, as pointed out by Peter Gutmann, a cryptography expert at the at the University of Auckland, New Zealand, is “with long-term document signing and certificates“. But, what about the distributed version control system Git code repositories? Linus Torvalds, Linux and Git’s inventor, doesn’t see any real security headaches ahead for you.
Read more at ZDNet
