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<?php class SafeBcryptWrapperPoC { private $staticKey; private $cost = 12; public function __construct( #[\SensitiveParameter] string $staticKey, int $cost = 12 ) { $this->staticKey = $staticKey; $this->cost = $cost; } /** * Generate password hashes here */ public function hash( #[\SensitiveParameter] string $password ): string { return \password_hash( $this->prehash($password), PASSWORD_BCRYPT, ['cost' => $this->cost] ); } /** * Verify password here */ public function verify( #[\SensitiveParameter] string $password, #[\SensitiveParameter] string $hash ): bool { return \password_verify( $this->prehash($password), $hash ); } /** * Pre-hashing with HMAC-SHA-512 here * * Note that this demo doesn't use libsodium, due to 3v4l limitations */ private function prehash( #[\SensitiveParameter] string $password ): string { return \base64_encode( \hash_hmac('sha512', $password, $this->staticKey, true) ); } } $staticKey = random_bytes(32); $hasher = new SafeBcryptWrapperPoC($staticKey); $example1 = str_repeat('A', 72); $example2 = $example1 . 'B'; $hash1 = password_hash($example1, PASSWORD_BCRYPT); $hash2 = $hasher->hash($example1); var_dump(password_verify($example2, $hash1)); var_dump($hasher->verify($example2, $hash2));

Version	System time (s)	User time (s)	Memory (MiB)
8.4.1	0.023	0.825	18.97
8.3.14	0.013	0.509	18.39
8.3.13	0.020	0.505	17.67
8.3.12	0.012	0.512	16.64
8.3.11	0.017	0.511	16.59
8.3.10	0.023	0.504	16.59
8.3.9	0.017	0.509	17.36
8.3.8	0.015	0.510	16.67
8.3.7	0.021	0.506	17.69
8.3.6	0.018	0.505	16.64
8.3.5	0.015	0.509	17.59
8.3.4	0.012	0.513	19.22
8.3.3	0.015	0.508	18.40
8.3.2	0.013	0.514	18.21
8.3.1	0.020	0.510	17.58
8.3.0	0.012	0.509	18.22
8.2.26	0.018	0.506	16.45
8.2.25	0.022	0.504	16.36
8.2.24	0.018	0.504	17.25
8.2.23	0.015	0.512	16.34
8.2.22	0.013	0.512	16.66
8.2.21	0.013	0.513	17.51
8.2.20	0.015	0.514	16.50
8.2.19	0.015	0.513	16.59
8.2.18	0.021	0.510	17.30
8.2.17	0.010	0.523	17.53
8.2.16	0.017	0.511	17.38
8.2.15	0.020	0.512	17.50
8.2.14	0.018	0.518	17.27
8.2.13	0.020	0.517	18.26
8.2.12	0.008	0.519	18.23
8.2.11	0.007	0.518	18.29
8.2.10	0.007	0.519	19.32
8.2.9	0.012	0.514	17.44
8.2.8	0.008	0.516	17.56
8.2.7	0.010	0.517	17.32
8.2.6	0.015	0.511	18.24
8.2.5	0.010	0.517	17.47
8.2.4	0.013	0.513	17.38
8.2.3	0.017	0.511	18.19
8.2.2	0.013	0.517	18.29
8.2.1	0.015	0.512	17.47
8.2.0	0.013	0.514	17.35

Version

System time (s)

User time (s)

Memory (MiB)

8.4.1

0.023

0.825

18.97

8.3.14

0.013

0.509

18.39

8.3.13

0.020

0.505

17.67

8.3.12

0.012

0.512

16.64

8.3.11

0.017

0.511

16.59

8.3.10

0.023

0.504

16.59

8.3.9

0.017

0.509

17.36

8.3.8

0.015

0.510

16.67

8.3.7

0.021

0.506

17.69

8.3.6

0.018

0.505

16.64

8.3.5

0.015

0.509

17.59

8.3.4

0.012

0.513

19.22

8.3.3

0.015

0.508

18.40

8.3.2

0.013

0.514

18.21

8.3.1

0.020

0.510

17.58

8.3.0

0.012

0.509

18.22

8.2.26

0.018

0.506

16.45

8.2.25

0.022

0.504

16.36

8.2.24

0.018

0.504

17.25

8.2.23

0.015

0.512

16.34

8.2.22

0.013

0.512

16.66

8.2.21

0.013

0.513

17.51

8.2.20

0.015

0.514

16.50

8.2.19

0.015

0.513

16.59

8.2.18

0.021

0.510

17.30

8.2.17

0.010

0.523

17.53

8.2.16

0.017

0.511

17.38

8.2.15

0.020

0.512

17.50

8.2.14

0.018

0.518

17.27

8.2.13

0.020

0.517

18.26

8.2.12

0.008

0.519

18.23

8.2.11

0.007

0.518

18.29

8.2.10

0.007

0.519

19.32

8.2.9

0.012

0.514

17.44

8.2.8

0.008

0.516

17.56

8.2.7

0.010

0.517

17.32

8.2.6

0.015

0.511

18.24

8.2.5

0.010

0.517

17.47

8.2.4

0.013

0.513

17.38

8.2.3

0.017

0.511

18.19

8.2.2

0.013

0.517

18.29

8.2.1

0.015

0.512

17.47

8.2.0

0.013

0.514

17.35