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@jmervine jmervine/sri.go
Last active Dec 4, 2018

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package sri
import (
"crypto/sha256"
"encoding/base64"
"fmt"
"io/ioutil"
)
func Generate256(file string) (string, error) {
body, err := ioutil.ReadFile(file)
if err != nil {
return "", err
}
hash := sha256.Sum256(body)
sha := base64.StdEncoding.EncodeToString(hash[:])
return fmt.Sprintf("sha256-%s", sha), nil
}
// package main
//
// import (
// "fmt"
// "sri"
// )
//
// func main() {
// sha, err := sri.Generate256("./src/sri.go")
//
// if err != nil {
// panic(err)
// }
//
// fmt.Println(sha)
// }
//
var crypto = require('crypto');
var fs = require('fs');
module.exports = function (file) {
var enc = 'utf8';
var body = fs.readFileSync(file, { encoding: enc });
var hash = crypto.createHash('sha256').update(body, enc);
var sha = hash.digest('base64');
return 'sha256-' + sha;
}
// > var generate256 = require('./sri.js');
// undefined
// > generate256("./sri.js");
// 'sha256-U+9zwgl5Wcs2X0IzBnN/4Ri016f8lkdtvmPZuIytt8Y='
// >
<?php
function generate256($path) {
$file = fopen($path, "r");
$body = fread($file, filesize($path));
$hash = hash('sha256', $body, true);
$sha = base64_encode($hash);
return "sha256-$sha";
}
// php > include './sri.php';
// php > echo generate256("./sri.php");
// sha256-wdToXd37ShQdyh8ljZAJoqvPXdQEiyqGv/IBnbKkg3A=
// php >
?>
import base64
import hashlib
def generate256(file):
with open(file, 'r') as f:
body = f.read()
hash = hashlib.sha256(body).digest()
sha = base64.b64encode(hash).decode()
return 'sha256-{}'.format(sha)
# Python 2.7.10 (default, Oct 14 2015, 16:09:02)
# [GCC 5.2.1 20151010] on linux2
# Type "help", "copyright", "credits" or "license" for more information.
# >>> from sri import generate256
# >>> generate256("sri.py")
# 'sha256-ZDTvTHvqQDypoPxKGrkYPNVeXQPvKqnZeAFvRZ1l+ik='
# >>>
require 'digest'
require 'base64'
def generate256(file)
body = File.read(file)
hash = Digest::SHA256.digest(body)
sha = Base64.encode64(hash).strip
"sha256-#{sha}"
end
# irb(main):001:0> require './sri'
# => true
# irb(main):002:0> generate256("sri.rb")
# => "sha256-zna8a/EB5hMXmiyjg+iSy5/Xar/+Cv0EDF1STWr+Mwo="
function generate256 {
echo "sha256-`cat $1 | openssl dgst -sha256 -binary | openssl enc -base64 -A`"
}
# jmervine@laptop:~/sri $ source sri.sh
# jmervine@laptop:~/sri $ generate256 "sri.sh"
# sha256-wS2IFRvHJO0XSkrEvudmfw2nBnNz+E1o4AJ2Cf/HpZs=
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