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SipHash-1-3 of a file (bytes on disk)

Source: R/hashing.R
st_hash_file.Rd

Computes a hash of a file's contents by reading the file as raw bytes and hashing them via secretbase::siphash13(). This is faster than reading the file into R first because secretbase can stream the file directly.

Usage

st_hash_file(path)

Arguments

path

Character path to a file

Value

Lowercase hex string (16 hex characters) from siphash13().

Use Cases

  • Detecting if an artifact file has been modified on disk

  • Verifying file integrity across copies

  • Checking if a file needs to be re-saved

Note

This hashes the file's raw bytes, not its R representation. If you save an R object with saveRDS(), the file hash will change even if the object content is the same (due to timestamps, compression variation, etc.). Use st_hash_obj() for content-based hashing of R objects.

Examples

if (FALSE) { # \dontrun{
# Hash a file
st_hash_file("data.csv")
} # }