Strange behaviour in php hash

Strange behaviour in php hash_hmac

up vote
1
down vote

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I am creating a simple api in php.

$signature_string = "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q="

$new_sig = hash_hmac("sha256",  $signature_string, $api_key, false);

echo $new_sig;

24f305d19cad2e848b3407f64bc21ada0ff1978a2487a23f26aa35f3a1c8204a

Now explain me this:

$new_sig = hash_hmac("sha256", "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q=" , $api_key, false);

echo $new_sig;

c1d2347e60a648838fd8a98a41174fc9a4b18371e18261931f3337951b8a6cdf

The second one is the expected one I was able to generate on the c# client.

asked 21 mins ago

Felix D.

2,58421946

1

Please provide a MCVE of this problem. It shouldn't create a different hash just because the value is saved in a variable first. Maybe the $signature_string variable or the $api_key variable is changing.
– Progman
13 mins ago

i am pretty sure this can me reproduced using any string as api_key. I am 100% sure the data is the same (api_key is used both times). the 2 snippets are right after each other and api_key is never altered.
– Felix D.
10 mins ago

It can not be reproduced with just these code blocks. They will return the same hash, regardless if the message is written directly in the hash_hmac() call or via a variable. Please provide a MCVE.
– Progman
7 mins ago

1

WFM: 3v4l.org/okmLH
– Sammitch
5 mins ago

add a comment |

up vote
1
down vote

favorite

I am creating a simple api in php.

$signature_string = "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q="

$new_sig = hash_hmac("sha256",  $signature_string, $api_key, false);

echo $new_sig;

24f305d19cad2e848b3407f64bc21ada0ff1978a2487a23f26aa35f3a1c8204a

Now explain me this:

$new_sig = hash_hmac("sha256", "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q=" , $api_key, false);

echo $new_sig;

c1d2347e60a648838fd8a98a41174fc9a4b18371e18261931f3337951b8a6cdf

The second one is the expected one I was able to generate on the c# client.

asked 21 mins ago

Felix D.

2,58421946

1

Please provide a MCVE of this problem. It shouldn't create a different hash just because the value is saved in a variable first. Maybe the $signature_string variable or the $api_key variable is changing.
– Progman
13 mins ago

i am pretty sure this can me reproduced using any string as api_key. I am 100% sure the data is the same (api_key is used both times). the 2 snippets are right after each other and api_key is never altered.
– Felix D.
10 mins ago

It can not be reproduced with just these code blocks. They will return the same hash, regardless if the message is written directly in the hash_hmac() call or via a variable. Please provide a MCVE.
– Progman
7 mins ago

1

WFM: 3v4l.org/okmLH
– Sammitch
5 mins ago

add a comment |

up vote
1
down vote

favorite

I am creating a simple api in php.

$signature_string = "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q="

$new_sig = hash_hmac("sha256",  $signature_string, $api_key, false);

echo $new_sig;

24f305d19cad2e848b3407f64bc21ada0ff1978a2487a23f26aa35f3a1c8204a

Now explain me this:

$new_sig = hash_hmac("sha256", "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q=" , $api_key, false);

echo $new_sig;

c1d2347e60a648838fd8a98a41174fc9a4b18371e18261931f3337951b8a6cdf

The second one is the expected one I was able to generate on the c# client.

asked 21 mins ago

Felix D.

2,58421946

I am creating a simple api in php.

$signature_string = "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q="

$new_sig = hash_hmac("sha256",  $signature_string, $api_key, false);

echo $new_sig;

24f305d19cad2e848b3407f64bc21ada0ff1978a2487a23f26aa35f3a1c8204a

Now explain me this:

$new_sig = hash_hmac("sha256", "MARCIGETapi/v1/test/636779232000000000FIXXISOFTRGllcyBpc3QgZWluIFRlc3Q=" , $api_key, false);

echo $new_sig;

c1d2347e60a648838fd8a98a41174fc9a4b18371e18261931f3337951b8a6cdf

The second one is the expected one I was able to generate on the c# client.

php sha256 hmac

asked 21 mins ago

Felix D.

2,58421946

asked 21 mins ago

Felix D.

2,58421946

asked 21 mins ago

Felix D.

2,58421946

asked 21 mins ago

Felix D.

2,58421946

asked 21 mins ago

Felix D.

2,58421946

1

Please provide a MCVE of this problem. It shouldn't create a different hash just because the value is saved in a variable first. Maybe the $signature_string variable or the $api_key variable is changing.
– Progman
13 mins ago

i am pretty sure this can me reproduced using any string as api_key. I am 100% sure the data is the same (api_key is used both times). the 2 snippets are right after each other and api_key is never altered.
– Felix D.
10 mins ago

It can not be reproduced with just these code blocks. They will return the same hash, regardless if the message is written directly in the hash_hmac() call or via a variable. Please provide a MCVE.
– Progman
7 mins ago

1

WFM: 3v4l.org/okmLH
– Sammitch
5 mins ago

add a comment |

1

Please provide a MCVE of this problem. It shouldn't create a different hash just because the value is saved in a variable first. Maybe the $signature_string variable or the $api_key variable is changing.
– Progman
13 mins ago

i am pretty sure this can me reproduced using any string as api_key. I am 100% sure the data is the same (api_key is used both times). the 2 snippets are right after each other and api_key is never altered.
– Felix D.
10 mins ago

It can not be reproduced with just these code blocks. They will return the same hash, regardless if the message is written directly in the hash_hmac() call or via a variable. Please provide a MCVE.
– Progman
7 mins ago

1

WFM: 3v4l.org/okmLH
– Sammitch
5 mins ago

Please provide a MCVE of this problem. It shouldn't create a different hash just because the value is saved in a variable first. Maybe the $signature_string variable or the $api_key variable is changing.
– Progman
13 mins ago

i am pretty sure this can me reproduced using any string as api_key. I am 100% sure the data is the same (api_key is used both times). the 2 snippets are right after each other and api_key is never altered.
– Felix D.
10 mins ago

It can not be reproduced with just these code blocks. They will return the same hash, regardless if the message is written directly in the hash_hmac() call or via a variable. Please provide a MCVE.
– Progman
7 mins ago

WFM: 3v4l.org/okmLH
– Sammitch
5 mins ago

add a comment |

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

I`ve had the same problems in one of my projects.
Just try:

$new_sig = hash_hmac("sha256", trim($signatur_string," "), $api_key);

answered 6 mins ago

Marcel Merz

9511

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

add a comment |

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1 Answer
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active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

I`ve had the same problems in one of my projects.
Just try:

$new_sig = hash_hmac("sha256", trim($signatur_string," "), $api_key);

answered 6 mins ago

Marcel Merz

9511

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

add a comment |

up vote
0
down vote

accepted

I`ve had the same problems in one of my projects.
Just try:

$new_sig = hash_hmac("sha256", trim($signatur_string," "), $api_key);

answered 6 mins ago

Marcel Merz

9511

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

add a comment |

up vote
0
down vote

accepted

I`ve had the same problems in one of my projects.
Just try:

$new_sig = hash_hmac("sha256", trim($signatur_string," "), $api_key);

answered 6 mins ago

Marcel Merz

9511

I`ve had the same problems in one of my projects.
Just try:

$new_sig = hash_hmac("sha256", trim($signatur_string," "), $api_key);

answered 6 mins ago

Marcel Merz

9511

answered 6 mins ago

Marcel Merz

9511

answered 6 mins ago

Marcel Merz

9511

answered 6 mins ago

Marcel Merz

9511

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

add a comment |

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

Then this is a completely different problem with your input.
– Sammitch
5 mins ago

add a comment |

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