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.\"
.IX Title "Digest::file 3perl"
.TH Digest::file 3perl "2021-09-24" "perl v5.32.1" "Perl Programmers Reference Guide"
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.SH "NAME"
Digest::file \- Calculate digests of files
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 5
\&  # Poor mans "md5sum" command
\&  use Digest::file qw(digest_file_hex);
\&  for (@ARGV) {
\&      print digest_file_hex($_, "MD5"), "  $_\en";
\&  }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provide 3 convenience functions to calculate the digest
of files.  The following functions are provided:
.ie n .IP "digest_file( $file, $algorithm, [$arg,...] )" 4
.el .IP "digest_file( \f(CW$file\fR, \f(CW$algorithm\fR, [$arg,...] )" 4
.IX Item "digest_file( $file, $algorithm, [$arg,...] )"
This function will calculate and return the binary digest of the bytes
of the given file.  The function will croak if it fails to open or
read the file.
.Sp
The \f(CW$algorithm\fR is a string like \*(L"\s-1MD2\*(R", \*(L"MD5\*(R", \*(L"SHA\-1\*(R", \*(L"SHA\-512\*(R".\s0
Additional arguments are passed to the constructor for the
implementation of the given algorithm.
.ie n .IP "digest_file_hex( $file, $algorithm, [$arg,...] )" 4
.el .IP "digest_file_hex( \f(CW$file\fR, \f(CW$algorithm\fR, [$arg,...] )" 4
.IX Item "digest_file_hex( $file, $algorithm, [$arg,...] )"
Same as \fBdigest_file()\fR, but return the digest in hex form.
.ie n .IP "digest_file_base64( $file, $algorithm, [$arg,...] )" 4
.el .IP "digest_file_base64( \f(CW$file\fR, \f(CW$algorithm\fR, [$arg,...] )" 4
.IX Item "digest_file_base64( $file, $algorithm, [$arg,...] )"
Same as \fBdigest_file()\fR, but return the digest as a base64 encoded
string.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Digest