Need PKCS5 Padding about crypto HOT 6 CLOSED

In your case you are using Base64 string as data. It should be
var data:Bytes = Base64.decode("79ZE94s1dA86up4W+A0Gpw==");
not Bytes.ofString(....)

Here is a working example:

               var key = Bytes.ofString("rat-moon");
		var des:Des = new Des(key);
		var data:Bytes = Base64.decode("79ZE94s1dA86up4W+A0Gpw==");
		data = des.decrypt(Mode.ECB, data, Padding.PKCS7);
		trace("Decrypted text ECB: "+ data);

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Thank you, @flashultra ! That worked like a charm!

Thank you very much for your timely help. It makes a lot of difference. )

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You can use PKCS7 as replacement for PKCS5 padding , it's the same with only difference in block size.
PKCS5 is only for 8-byte block size;
PKCS7 support block size from 1 to 255 bytes.
So PKCS5 padding is a subset of PKCS7 padding for 8 byte block sizes

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@flashultra thank you, for response. If the usage are suppose to be same (PKCS5/7), perhaps you can give me some guidance to overcome the problem I'm facing (?)

With Hurlant.Crypto using same des-ecb and PKCS5 padding, I has following output with these key and values:

trace(hurlant.encrypt(key:"rat-moonshine", value:"secretPassword")); // 79ZE94s1dA86up4W+A0Gpw==

I was trying to decrypt that value (79ZE94s1dA86up4W+A0Gpw==) using Des:

var des:Des = new Des();
data = Bytes.ofHex("79ZE94s1dA86up4W+A0Gpw=="); // key: "rat-moonshine", value: "secretPassword"
data = des.decrypt(ECB, data, PKCS7);
trace("Decrypted text ECB: "+ data);

Unfortunately, it thrown following error on https://github.com/HaxeFoundation/crypto/blob/master/src/haxe/crypto/Des.hx#L329:
[Fault] exception, information=TypeError: Error #1009: Cannot access a property or method of a null object reference.

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Did you set the key for the Des ( des.init(key,iv) ) ?
Also for Des key size is 56 bits and block size is 64 bits. In your case the key is rat-moon ( as you can test here https://the-x.cn/en-US/cryptography/Des.aspx ) . Probably Hurlant.Crypto cut part of the key when is more than 8 bytes

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Did you set the key for the Des ( des.init(key,iv) ) ?

No. Sorry, I was not clear about the usage but it make sense that we need to feed the key some way.
During the decryption I only has once-encrypted value, and a key.

Thank you, for the test-link (https://the-x.cn/en-US/cryptography/Des.aspx). It seems to decrypt correctly:

This time with HaxeFoundation.Crypto, I catch a separate error from https://github.com/HaxeFoundation/crypto/blob/master/src/haxe/crypto/padding/PKCS7.hx#L24:

[Fault] exception, information=Cannot remove 221 bytes, because message is 24 bytes

Can you please check if I'm missing something again in my code (?):

var des:Des = new Des();
var key = Bytes.ofString("rat-moon");
des.init(key);

var data:Bytes = Bytes.ofString("79ZE94s1dA86up4W+A0Gpw==");
data = des.decrypt(ECB, data, PKCS7);
trace("Decrypted text ECB: "+ data);

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