Argon2

Coherence
Search…
Coherence
Home
Understanding-the-code
Argon2
PHC
​spec​
In order to understand hex and type parameters read HASH​
Argon2
​spec​
Description: Password hashing winner of PHC.
Outputs: Variable
Uses: Highest resistance against GPU cracking attacks, safest against side-channel attacks.
How to ???
1
import requests
2
import json
3
import os,binascii
4
​
5
def sending(message):
6
    url = 'http://127.0.0.1:6613/'
7
    response=requests.post(url, data=message)
8
    print response.content
9
        return response.content
10
​
11
​
12
def argon(data_js):
13
    req=json.loads(data_js)
14
    print "Hash passwd \n " + json.dumps(req) +"\n"
15
    data_js_n=sending(json.dumps(req))
16
    answ=json.loads(data_js_n)
17
    print "Recived Argon2 hash: \n" + (json.dumps(answ)) +"\n\n\n"
18
    verify= '{ "version": 1 , "algorithm":"ARGON2" ,"family":"argon2i","plaintext": "Hello world!","hex":0,"pwd":"", "operation":"verify"}';
19
    req=json.loads(verify)
20
    req["pwd"]=answ["hash"]
21
    print "Verify passwd \n " + json.dumps(req) +"\n"
22
    data_js_n=sending(json.dumps(req))
23
    answ_1=json.loads(data_js_n)
24
    print "Recived Argon verification: \n" + (json.dumps(answ_1)) +"\n\n\n"
25
​
26
​
27
argon2_js='{ "version": 1 , "algorithm":"ARGON2" ,"family":"argon2i","plaintext": "Hello world!","t_cost":10,"m_cost":16,"parallelism":4,\
28
"salt":"ABABABABABABABABABABABABABABABAB","hashlen":32, "hex":0, "operation":"hash"}'
29
​
30
argon(argon2_js)
Copied!
In this example We generate hash and validate password with argon2i from string Hello world! with t_cost, m_cost, parallelism and salt parameters given.
In order to understand t_cost, m_cost, parallelism and salt parameters, please read spec.
On argon2_js["family"] can be one of {argon2i, argon2d, argon2id}
On argon2_js["operation"] can be {hash, verify}
ARGON2 only supports "type":"string"
Json to hash
1
{ "version": 1 , "algorithm":"ARGON2" ,"family":"argon2 flavor",
2
"plaintext": "your password","t_cost":INT,"m_cost":INT,"parallelism":INT,
3
"salt":"hex string","hashlen":INT, "hex": BOOL, "operation":"hash"}
Copied!
Json to verify
1
{ "version": 1 , "algorithm":"ARGON2" ,"family":"argon2 flavor",
2
"plaintext": "your password","hex":BOOL,"pwd":"Hex (hash arong2 string) ", 
3
"operation":"verify"}
Copied!
In this tutorial We are protecting user's credentials with TLS and Argon2. It means the information is protected in motion, at rest, in use. End to end user credentials protection​
Hash
Poly1305
Last modified 1yr ago
Copy link
Contents
PHC
Argon2
How to ???