sha1 Function

sha1 computes the SHA1 hash of a given string and encodes it with hexadecimal digits.

The given string is first encoded as UTF-8 and then the SHA1 algorithm is applied as defined in RFC 3174 (opens in a new tab). The raw hash is then encoded to lowercase hexadecimal digits before returning.

Collision attacks have been successfully performed against this hashing function. Before using this function for anything security-sensitive, review relevant literature to understand the security implications.


> sha1("hello world")

Related Functions

  • filesha1 calculates the same hash from the contents of a file rather than from a string value.