Re: XChaCha20 decryption issue.

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Sorry, seeing now that I've linked the wrong Golang library, here it=20
is: https://pkg.go.dev/golang.org/x/crypto/chacha20poly1305

On Sunday, November 5, 2023 at 10:10:44=E2=80=AFAM UTC+1 Lucas Marchetti wr=
ote:

> I've just made a test encrypting the string "Hello World!" with both=20
> client and server functions and these are the results.
>
> [image: Screenshot 2023-11-05 100312.png]
>
> Both green-highlighted bytes corresponds to the input string but, as you=
=20
> can see, there is a different padding that I'm 100% sure is the source of=
=20
> the problem.
>
> On Saturday, November 4, 2023 at 7:39:31=E2=80=AFPM UTC+1 Lucas Marchetti=
 wrote:
>
>> Good evening.
>>
>> I'm building a client-server application and I want to implement a=20
>> XChaCha20 communication over TCP after performing key exchange.
>>
>> What I'm issuing is a bad decryption output like the one shown in the pi=
c.
>>
>> [image: Screenshot 2023-11-04 193625.png]
>>
>> I'm currently using crypto++ 8.9 in the client-side and=20
>> https://pkg.go.dev/golang.org/x/crypto/chacha20 in the server-side.
>>
>> Is that something related to sealing or authentication implemented in th=
e=20
>> Golang library?
>>
>> Functions that I'm using:
>>
>> [image: Screenshot 2023-11-04 193751.png]
>>
>> [image: Screenshot 2023-11-04 193832.png]
>>
>> Thanks in advance.
>>
>

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Sorry, seeing now that I've linked the wrong Golang library, here it is:=C2=
=A0https://pkg.go.dev/golang.org/x/crypto/chacha20poly1305<br /><br /><div =
class=3D"gmail_quote"><div dir=3D"auto" class=3D"gmail_attr">On Sunday, Nov=
ember 5, 2023 at 10:10:44=E2=80=AFAM UTC+1 Lucas Marchetti wrote:<br/></div=
><blockquote class=3D"gmail_quote" style=3D"margin: 0 0 0 0.8ex; border-lef=
t: 1px solid rgb(204, 204, 204); padding-left: 1ex;">I&#39;ve just made a t=
est encrypting the string &quot;Hello World!&quot; with both client and ser=
ver functions and these are the results.<div><br></div><div><img alt=3D"Scr=
eenshot 2023-11-05 100312.png" width=3D"726px" height=3D"111px" src=3D"http=
s://groups.google.com/group/cryptopp-users/attach/5b1bbc5faec59/Screenshot%=
202023-11-05%20100312.png?part=3D0.1&amp;view=3D1"></div><div><br></div><di=
v>Both green-highlighted bytes corresponds to the input string but, as you =
can see, there is a different padding that I&#39;m 100% sure is the source =
of the problem.<br><br></div><div class=3D"gmail_quote"><div dir=3D"auto" c=
lass=3D"gmail_attr">On Saturday, November 4, 2023 at 7:39:31=E2=80=AFPM UTC=
+1 Lucas Marchetti wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:=
1ex">Good evening.<br><br>I&#39;m building a client-server application and =
I want to implement a XChaCha20 communication over TCP after performing key=
 exchange.<br><br>What I&#39;m issuing is a bad decryption output like the =
one shown in the pic.<br><br><img alt=3D"Screenshot 2023-11-04 193625.png" =
width=3D"266px" height=3D"19px" src=3D"https://groups.google.com/group/cryp=
topp-users/attach/58230e8ec9c5a/Screenshot%202023-11-04%20193625.png?part=
=3D0.1&amp;view=3D1"><br><div><br></div><div>I&#39;m currently using crypto=
++ 8.9 in the client-side and=C2=A0<a href=3D"https://pkg.go.dev/golang.org=
/x/crypto/chacha20" rel=3D"nofollow" target=3D"_blank" data-saferedirecturl=
=3D"https://www.google.com/url?hl=3Den&amp;q=3Dhttps://pkg.go.dev/golang.or=
g/x/crypto/chacha20&amp;source=3Dgmail&amp;ust=3D1699263468573000&amp;usg=
=3DAOvVaw1LtEIKQkoi-KLp5XhynhQO">https://pkg.go.dev/golang.org/x/crypto/cha=
cha20</a> in the server-side.<div><br></div><div>Is that something related =
to sealing or authentication implemented in the Golang library?</div></div>=
<div><br></div><div>Functions that I&#39;m using:</div><div><br></div><div>=
<img alt=3D"Screenshot 2023-11-04 193751.png" width=3D"534px" height=3D"197=
px" src=3D"https://groups.google.com/group/cryptopp-users/attach/58230e8ec9=
c5a/Screenshot%202023-11-04%20193751.png?part=3D0.3&amp;view=3D1"><br></div=
><div><br></div><div><img alt=3D"Screenshot 2023-11-04 193832.png" width=3D=
"534px" height=3D"197px" src=3D"https://groups.google.com/group/cryptopp-us=
ers/attach/58230e8ec9c5a/Screenshot%202023-11-04%20193832.png?part=3D0.2&am=
p;view=3D1"><br></div><div><br></div><div>Thanks in advance.</div></blockqu=
ote></div></blockquote></div>

<p></p>

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