digest.sha1

The digest.sha1 function returns the SHA-1 digest of a string as lowercase hexadecimal. SHA-1 is not collision resistant, so use it only where another system already expects it, such as Git object ids or legacy checksum files. For fingerprints you control, use digest.sha256.

Usage

digest.sha1(data)

Arguments

data

Required. The string to hash, as bytes.

Returns

The digest as a 40-character lowercase hexadecimal string.

Example

Compute a Git blob id without Git

content = fs.read_file("README.md")
blob = digest.sha1("blob " + str(len(content)) + "\0" + content)

Errors

• A missing argument, or an argument that is not a string, fails with an argument error.

Related

• digest.sha256 for fingerprints and cache keys.
• Atmos Automation Language and the script step