David Bertoldi firaja

💭

Do or do not. There is no try.

Creator of @Password4j, Technical Architect at @salesforce and AI enthusiast

firaja / code.py

Created June 18, 2024 13:41

[((ord(s[i])-97)*10.24, (ord(s[i+1])-97)*10.24, (ord(s[i+2])-97)*10.24, (ord(s[i+3])-97)*10.24) for i in range(0, len(s), 4)]

firaja / MPI-Floyd-Warshall.c

Created October 9, 2022 19:51

	#include <stdio.h>
	#include <stdlib.h>
	#include <time.h>
	#include <mpi.h>
	#include "config.h"

	#define ROOT 0

	void showDistances(int matrix[], int n);
	void populateMatrix(int matrix[], int n, int density, int rank, int processes);

firaja / sequential-Floyd-Warshall.c

Created October 9, 2022 19:44

	#include <stdio.h>
	#include <stdlib.h>
	#include <time.h>
	#include "config.h"

	void showDistances(int matrix[], int n);
	void populateMatrix(int* matrix, int n, int density);
	void floydWarshall(int* matrix, int n);

	int main(int argc, char** argv)

firaja / benchmark.java

Created October 6, 2022 09:49

Password4j - determine bcrypt parameters

	int minimumTime = 1500;

	BenchmarkResult<BcryptFunction> benchmark = SystemChecker.benchmarkBcrypt(minimumTime);

	benchmark.getElapsed(); // 929ms
	benchmark.getPrototype(); // BcryptFunction object with 14 rounds

firaja / update-bcrypt-to-argon2.java

Created October 6, 2022 09:38

Password4j - migrate from bcrypt to Argon2

	String userPassword = "my password";
	String oldHash = "$2y$06$pWbj0v7UGWgOp1mXWfCt1OUAibk5luL758NoVndquXnXfH79zFTRG";

	BcryptFunction bcrypt = BcryptFunction.getInstanceFromHash(oldHash);
	Argon2Function argon2 = Argon2Function.getInstance(14, 20, 1, 32, Argon2.ID);

	HashUpdate update = Password.check(userPassword, oldHash)
	.andUpdate()
	.with(bcrypt, argon2);

firaja / verify-argon2-implicit.java

Created October 6, 2022 09:26

Password4j - verify Argon2 hash without specifying parameters

	String hash = "$argon2id$v=19$m=14,t=20,p=1$cHJpdmF0ZS1zYWx0$mxKlVBKpr3lNXHdaBKnuvjl/IsESYkYPCFAsb7VaIGs";
	Argon2Function argon2 = Argon2Function.getInstanceFromHash(hash);

	boolean verified = Password.check("my password", hash)
	.addPepper("shared-secret")
	.with(argon2);

	// true

firaja / verify-argon2.java

Created October 6, 2022 09:24

Password4j - Verify Argon2 hash

	Argon2Function argon2 = Argon2Function.getInstance(14, 20, 1, 32, Argon2.ID);

	boolean verified = Password.check("my password", "$argon2id$v=19$m=14,t=20,p=1$cHJpdmF0ZS1zYWx0$mxKlVBKpr3lNXHdaBKnuvjl/IsESYkYPCFAsb7VaIGs")
	.addPepper("shared-secret")
	.with(argon2);

	// true

firaja / hash-argon2.java

Last active October 6, 2022 09:37

Password4j - Hash password with Argon2

	Argon2Function argon2 = Argon2Function.getInstance(14, 20, 1, 32, Argon2.ID);

	Hash hash = Password.hash("my password")
	.addPepper("shared-secret")
	.addSalt("private-salt")
	.with(argon2);

	hash.getResult(); // $argon2id$v=19$m=14,t=20,p=1$cHJpdmF0ZS1zYWx0$mxKlVBKpr3lNXHdaBKnuvjl/IsESYkYPCFAsb7VaIGs

firaja / verify-scrypt-implicit.java

Last active October 6, 2022 11:50

Password4j - Verify scrypt hash without specifying parameters

	String hash = "$100801$cHJpdmF0ZS1zYWx0$ibAGantBIzk0Zcpl11VLaywBOdVA4mgrwTkIxWbNYBsIDROtTIMGULxMS9AJj7MOs74D/fQk6WtodZ1115i5wg==";
	ScryptFunction scrypt = ScryptFunction.getInstanceFromHash(hash);

	boolean verified = Password.check("my password", hash)
	.addPepper("shared-secret")
	.with(scrypt);

	// true

firaja / verify-scrypt.java

Last active October 6, 2022 11:51

Password4j - Verify scrypt hash

	ScryptFunction scrypt = ScryptFunction.getInstance(1<<16, 8, 1);

	boolean verified = Password.check("my password", "$100801$cHJpdmF0ZS1zYWx0$ibAGantBIzk0Zcpl11VLaywBOdVA4mgrwTkIxWbNYBsIDROtTIMGULxMS9AJj7MOs74D/fQk6WtodZ1115i5wg==")
	.addPepper("shared-secret")
	.with(scrypt);

	// true