# openSSL signs

**URL:** <https://www.ruby-forum.com/t/openssl-signs/77815>\
**Category:** Ruby\
**Created:** [November 30, 2006, 7:35pm UTC](https://www.ruby-forum.com/t/openssl-signs/77815 "2006-11-30T19:35:58Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![josegalvan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/2bfe46/32.png) [@josegalvan](https://www.ruby-forum.com/u/josegalvan)\
**Post date:** [November 30, 2006, 7:35pm UTC](https://www.ruby-forum.com/t/openssl-signs/77815/1 "2006-11-30T19:35:58Z")

</div>

I’ve wrote a simple script to sign and verify some text and generate a  
PKCS7 using OpenSSL.

require ‘openssl’  
include OpenSSL

data = ‘abcdefghijklmnsopqrstuvwxyz\n’

cert = X509::Certificate.new( File::read(“my\_cert.pem”) )  
prv\_key = PKey::RSA.new( File::read(“key\_prv.pem”) )

store = X509::Store.new  
store.add\_cert(cert)

#gen sign  
p7 = PKCS7.sign(cert,prv\_key,data)

#verify sign  
puts “verified: #{p7.verify([cert],store,data,0)}”

executed, the result is:

verified: true

but changing the data variable from sigle quoted to double quoted:

data = “abcdefghijklmnsopqrstuvwxyz\n”

the answer is:

verified: false

i know that escaped characters are treated diferently within double  
quoted strings, but i sign and verify the same data in both cases.  
¿what’s happen?

this is the content of the file ‘my\_cert.pem’  
-----BEGIN CERTIFICATE-----  
MIIDDjCCAfYCAQEwDQYJKoZIhvcNAQEFBQAwTTELMAkGA1UEBhMCRVMxDzANBgNV  
BAgMBk1hZHJpZDEtMCsGA1UEAwwkTklGIC0gMDk3NTkwMDZLIE5PTUJSRSAtIFJB  
VE8gREEgTFVBMB4XDTA2MTEyOTE4MzM0M1oXDTA4MTEyOTE4MzM0M1owTTELMAkG  
A1UEBhMCRVMxDzANBgNVBAgMBk1hZHJpZDEtMCsGA1UEAwwkTklGIC0gMDk3NTkw  
MDZLIE5PTUJSRSAtIFJBVE8gREEgTFVBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A  
MIIBCgKCAQEArlOHgLZa/7xnDbRMADjv7pdSFmSxuUXjhCH9Rn6NLblRkPcxfdJh  
BHleGF9cB00y1SNoN3JzxQ+Wg+lsOteRJGjXcP8weywQtCczKt2Pr9z4kPSq173Z  
AyLx0pdRowqNvvDXh2HnH6MHzJVqtEOoSTKfQU7p+8c80mgkkx3U5ijctr64fY7W  
bUd1zy9o1AMNLda/CudG9m8+qo6VVlGdizcNkJQGz6GW1FdAHab7xCwzqrDvdkHS  
dkWou7YSLuY4t+RG6bxhDccckPhxt2ZVShwvCZIDSkOHG9Hqb8ji8UxGX+3gLTM8  
pnPfiEvhw/EOtHQl1ZsG9Fr3wxmyWqUAiQIDAQABMA0GCSqGSIb3DQEBBQUAA4IB  
AQCSLRyUjFfErk92MKdjRwIHv3OtBSH55YsKuYViwlutqX18BASJWrrLnMsbI4t3  
WlZDKrp57luoeTuTVOciS7+PgvozhZiIANqUs0MScjIiwWSTYon7XRAhlrdrmnFr  
GciqfvXIgVifH7Az9/5Evh//oQtwc4ubvag3vjBZD83qmNpmF6u27czcfEuOAR3+  
JMx4rciXnHQfzyl+0Hqsg+5B5yveKn/VPdYab4waAmLD4tKGBumxfiWWcdp82/BY  
LaAbbVkX8Kux5PFxPT62kICmrVZABtZBzbf0wYNS6zjnq3uAC5xDbyqk5zKb1cwN  
9kXTJLBRlMAy/qLGRwqAwO6U  
-----END CERTIFICATE-----

and ‘prv\_key.pem’  
-----BEGIN RSA PRIVATE KEY-----  
MIIEpQIBAAKCAQEA2jLsuD6gUhbfqOjY/cIEp9vnta2oaWpqMD9mcZ6jWckwM8Q0  
xzPfW/spfvYDCxxPMyh6s7xoXNNv1pku64WeWqjunNKKQsGvOsW11uR9X0Z6+tMI  
DvTLrXtgkm6AgPcYWiakJ9uCGLumRGXq5aggw5IytSGjNgVZLho97hLn4GXWRml6  
ABf+2T8UJgP5QPA+TsKhmX6qQK/+WRplUBVfxZd4P8SAaOP3vpATScU4/QSgHprx  
Y+kfEc1DB6Is5Tq5mg//EdEcjLrvlfov+GD8nybQ1pnO/2Lbj6bRxRlNUzMemKSP  
k1vxUXwi9cmtSEuXEryWJmr0k68sUSVfOE1VqQIDAQABAoIBAQCmKDVfMEGBgW2c  
AISM6FwHP0w5ax5d9+0ZBI6MYxNdYflU0kqmjve94Yr95XT31vzwphiaGhUW6uO1  
dTznmP63ZwEdZq5mm3tGtBv+okxeaxtnOaBfU0Zuuw8VMxSkIIXo0JgcyelN0EeS  
ulGfxOH+S6xVhmH01ynME6upSbhNhZZBr2qG770s8JwT6FqB9BvdvGTtj3TadojN  
H2D2ZhcrQLuwrqZR9CKbwC/nhDEMMwtJoEbmN8NLBJoOSMtJqPuDOKd5yfrpt9g+  
vt9TdbvoLKnrpdtPxAHRK2SAIvZNgUL41bq7WLkK1mvFPI4W6MclPqUR0kjfpVK7  
cB9SmippAoGBAP3MRI+AUI6IPCZxbWW4fodXcYtO020l22SRmdNtnlxQrZKB5Orb  
SGiw446dHLFIzlRNI7RGcV7ccZNzYp9RXt0wrIL00wPT+7Qpj0vbdAhT4B4OKUke  
W13nMzmHNz3B60+4VKvcbAmEmX6bli2XN75rYNeas3OYLWJIIPZTUzNvAoGBANwX  
lbx+o4+6FpHh1FXH38w8AFfUB02siTgfduUZTj7MvnHLUlGk0nQP0wNLzMX0jtDg  
s/s09+mPQsVTAU1HwQmFTaOj1+sMgpw043fVsz/AZ01JRt2Gq0Bx8A/jURrm0H16  
gWxvQh8UYpJ7gEsDVQC0tO/cGgUseTsj1KN7RJxnAoGBAPI9+x6hEcLJo+fpkcpq  
a1KREw4tgb4HST3Xf2R/l4xzcQiKtM252YYbeEeSDGXmoRFzw2V5axJpBHsBwhtg  
1lP29mHUfmiD+BZBKMX1w+2C6UKmr59bu0eIuqrpNb/bjNc9kIutSu1WxA9FP/Vq  
BUnaQcfon+nwUTkisVuLsrk/AoGBAMPO79atTFMYme/b3I8crc0ELMH2zzCZqdMW  
my6j3uscOOsAmxIr81hyo6cxDtOnClBnOXjq3Q0b+amYeXYJuoH/6N0HbZeen6zd  
mOoKY9j6Em2+HaAEqeNB+vQHpyap5x9bmD2ilk8UUcZEvhT+t+dS3g7v4O5tbMXi  
0NFJX/dNAoGAQ/0dS8xZrQDcIGIxwa71nCr2ql8i/RjkzYdyieEpSI5AAJxY2xpr  
nV2qfPz8pnAodc3Q9zxHxaPdUS1V+rPBfVRic3YUfcuK0f0nUMfFJxJ4A6a4sYV+  
E8PFHHHb9D+i0MxCLlfhUhNNJCWr/KKcUuqvPOzC01ZcF93qJO7pBkA=  
-----END RSA PRIVATE KEY-----

Thanks  
jfglez

---

<div class="post-metadata">

**Author:** ![josegalvan](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/2bfe46/32.png) [@josegalvan](https://www.ruby-forum.com/u/josegalvan)\
**Post date:** [December 1, 2006, 10:11am UTC](https://www.ruby-forum.com/t/openssl-signs/77815/2 "2006-12-01T10:11:03Z")

</div>

On 30 Nov 2006, at 18:36, Jose francisco Gonzalez carmona wrote:

> data = ‘abcdefghijklmnsopqrstuvwxyz\n’

[snip]

> quoted strings, but i sign and verify the same data in both cases.  
> ¿what’s happen?

It’s not quite the same data in both cases. The \n is treated  
differently as you mentioned and this difference makes the whole  
string different.

In IRB:

> > puts ‘abc\n’  
> > abc\n  
> > =\> nil

> > puts “abc\n”  
> > abc  
> > =\> nil

> > ‘abc\n’.length  
> > =\> 5

> > “abc\n”.length  
> > =\> 4

Regards,  
Andy S.