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Neohapsis > Archives > Postfix Discussion> 2007-03

Problem with added newline

From: Alessio Palmero Aprosio (alessioinchiostro.unipv.it)
Date: Tue Mar 06 2007 - 04:56:31 CST

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Hello to all!

I am Italian, so I'm sorry for my English.

I have a big big problem with Postfix and digital signatures. I need to
sign a message from a PHP script and send it. I use the PHP function
openssl_pkcs7_sign, that works well.

Then I save the file in /tmp/signed.txt and execute the command

cat /tmp/signed.txt | sendmail myemail

The mail is sent but arrives with a Signature failure. This happens
because Postfix adds some new-line (??) in the body message, and so the
message is modified and the signature verifying script fails. I tried to
do the same from another server by simply scp signed.txt and execute the
same command cat /tmp/sig... etc. and all goes well. But that server
uses qmail as MTA and it doesn't add any newline.

How can I do? I attach the two mail received by Thunderbird from the two
servers.

Thank you
Alessio Palmero

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Date: 6 Mar 2007 09:18:43 -0000
Message-ID: <20070306091843.9696.qmailinchiostro.unipv.it>
To: HIDDEN
From: HIDDEN
Subject: Prova
MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="----CC0249166B3A27078C2DC2410F7517FC"

This is an S/MIME signed message

------CC0249166B3A27078C2DC2410F7517FC
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="143f3c60a50ce01f947c103ba473bdcd"
Content-Transfer-Encoding: quoted-printable

This is a multi-part message in MIME format.

--143f3c60a50ce01f947c103ba473bdcd
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Ciao ciao

--143f3c60a50ce01f947c103ba473bdcd
Content-Type: application/octet-stream; name="prova.tmp"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;

L3RtcC9waXBwby50eHQ=

--143f3c60a50ce01f947c103ba473bdcd--

------CC0249166B3A27078C2DC2410F7517FC
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"

MIIFaQYJKoZIhvcNAQcCoIIFWjCCBVYCAQExCzAJBgUrDgMCGgUAMAsGCSqGSIb3
DQEHAaCCA0IwggM+MIICp6ADAgECAgIEIzANBgkqhkiG9w0BAQQFADCBjTELMAkG
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------CC0249166B3A27078C2DC2410F7517FC--

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