SHA-1 hash tool generates a SHA1 hash which can be used as secure 40 hexadecimal (160 bit) password or used as Key to protect important data such as credit cards, private information and much more.
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A.: The SHA-1 hash (for Secure Hash Algorithm) is a hashing algorithm providing a hash of 40 hexadecimal characters.
A.: SHA-1 is widely used to secure applications such as SSL, SSH and many more. It's was now becoming obsolete and SHA2 is widely used nowadays.
A.: As we said before, SHA-1 isn't secure anymore since collisions were found. It's still widely used though for file signature, or even as password storage by webmasters that are not up to date or that actually doesn't care too much about security. Now if you use SHA-1 to store your user's passwords, and doesn't want to switch to a better hashing function, you can actually implement salting without user friction.