I have a server that is not using SSL, so I'm trying to find a way to secure the data being passed to the server. My first thought was jCryption, but it is not exactly what I need. So what I decided is that I could just pre-hash the password and send it to the server for comparison. So my question is, is there a sha1 utility that can be used for password verification purposes with PHP?
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- 3If you hash the password and send that to the server, then I don't need to know the password any more, just the hash - which I can intercept because you're sending that in cleartext!Gareth– Gareth2012-03-08 00:22:30 +00:00Commented Mar 8, 2012 at 0:22
- 1To avoid this you should double hash, the second time using a random one time salt that you would also use server side for comparison.leebriggs– leebriggs2012-03-08 07:50:03 +00:00Commented Mar 8, 2012 at 7:50
- good advice @leebriggs I already implemented it.nkcmr– nkcmr2012-03-08 22:02:08 +00:00Commented Mar 8, 2012 at 22:02
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4 Answers
Try the Stanford Crypto library. It's pretty comprehensive but if you just need a single hashing function you can extract it from the core (it has sha1 and 256).
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You shouldn't be using SHA1 to do your hashing anymore, since it's been broken for a while. Try SHA256.
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nkcmr
Well is there a way for JavaScript to do SHA256
Morgon
Come on.. that's unacceptably lazy. google.com/search?btnG=1&pws=0&q=sha256+javascript
I think that's what you're looking for: http://phpjs.org/functions/sha1:512
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There it is
async function sha256(message) { // encode as UTF-8 const msgBuffer = new TextEncoder().encode(message); // hash the message const hashBuffer = await crypto.subtle.digest('SHA-1', msgBuffer); // convert ArrayBuffer to Array const hashArray = Array.from(new Uint8Array(hashBuffer)); // convert bytes to hex string const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join(''); return hashHex; } 