python+encryption
I have the key pair generated by the GPG. Now I want to use the public key for encrypting the password. I need to make a function in Python. Can somebody guide me on how to do this … to encrypt password by the public key ..how can i do this ,which library is best and easy to prefer.i have to work on ssh secure shell client. thanks -- http://mail.python.org/mailman/listinfo/python-list
python function for retrieving key and encryption
M2Crypto package not showing the 'recipient_public_key.pem' file at
linux terminal .how do i get/connect with recipient public key.
exactly i need to check how can i open this file through linux
commands.
import M2Crypto def encrypt(): recip = M2Crypto.RSA.load_pub_key(open
('recipient_public_key.pem','rb').read()) print recip; plaintext =
whatever i need to encrypt msg = recip.public_encrypt
(plaintext,RSA.pkcs1_padding) print msg;
after calling the function its not giving any output and even any
error
i also tried as 'Will' said
pk = open('public_key.pem','rb').read() print pk; rsa =
M2Crypto.RSA.load_pub_key(pk)
whats the mistake i am not getting .will somebody help me out.
is something wrong in opening 'recipient_public_key.pem'. is M2Crypto
contain this file inbuilt .from where this file taking public key of
the recipient i'. what this file contain and how it will work .should
i need to create such a file for my purpose.if it is then how can i
create this and how it will retrieve the key,where i recognize my
recipient to get his public key .is something like database at server.
please give me a quick response..
looking for your answer.
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Re: python function for retrieving key and encryption
On Jul 21, 8:59 pm, Piet van Oostrum wrote:
> >>>>> jayshree (j) wrote:
> >j> M2Crypto package not showing the 'recipient_public_key.pem' file at
> >j> linux terminal .how do i get/connect with recipient public key.
> >j> exactly i need to check how can i open this file through linux
> >j> commands.
> >j> import M2Crypto def encrypt(): recip = M2Crypto.RSA.load_pub_key(open
> >j> ('recipient_public_key.pem','rb').read()) print recip; plaintext =
> >j> whatever i need to encrypt msg = recip.public_encrypt
> >j> (plaintext,RSA.pkcs1_padding) print msg;
> >j> after calling the function its not giving any output and even any
> >j> error
> >j> i also tried as 'Will' said
> >j> pk = open('public_key.pem','rb').read() print pk; rsa =
> >j> M2Crypto.RSA.load_pub_key(pk)
> >j> whats the mistake i am not getting .will somebody help me out.
> >j> is something wrong in opening 'recipient_public_key.pem'. is M2Crypto
> >j> contain this file inbuilt .from where this file taking public key of
> >j> the recipient i'. what this file contain and how it will work .should
> >j> i need to create such a file for my purpose.if it is then how can i
> >j> create this and how it will retrieve the key,where i recognize my
> >j> recipient to get his public key .is something like database at server.
> >j> please give me a quick response..
> >j> looking for your answer.
>
> Please:
> 1. Type your python code with newlines and proper indentation.
> 2. Show the error messages that your code gives when you run it.
> 3. Use proper capital letters at the beginning of your sentences.
> 4. Don't fire so many questions in rapid succession.
>
> The recipient_public_key.pem file is the public key of the recipient
> which means the person that is going to receive the encrypted message.
> You should get it from the recipient him/herself or from some key store
> where s/he has deposited it.
> --
> Piet van Oostrum
> URL:http://pietvanoostrum.com[PGP 8DAE142BE17999C4]
> Private email: p...@vanoostrum.org- Hide quoted text -
>
> - Show quoted text -
Here is the code that i used
import M2Crypto
from M2Crypto import RSA
def encrypt():
recip = M2Crypto.RSA.load_pub_key(open
('recipient_public_key.pem','rb').read())
#recip = M2Crypto.RSA.load_pub_key('recipient_public_key.pem')
print recip;
plaintext =" whatever i need to encrypt"
msg = recip.public_encrypt(plaintext,RSA.pkcs1_padding)
print msg;
encrypt()
error coming like - IOError: [Errno 2] No such file or directory:
'recipient_public_key.pem'
Is this not the inbuilt file.
How should i create such type of file.
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Re: python function for retrieving key and encryption
On Jul 23, 5:48 pm, Piet van Oostrum wrote:
> >>>>> jayshree (j) wrote:
> >j> On Jul 21, 8:59 pm, Piet van Oostrum wrote:
> >>> The recipient_public_key.pem file is the public key of the recipient
> >>> which means the person that is going to receive the encrypted message.
> >>> You should get it from the recipient him/herself or from some key store
> >>> where s/he has deposited it.
>
> [...]
>
> >j> error coming like - IOError: [Errno 2] No such file or directory:
> >j> 'recipient_public_key.pem'
> >j> Is this not the inbuilt file.
> >j> How should i create such type of file.
>
> You don't create it. See above. If you understand what is is you know
> why it can't be builtin. If you don't understand it is better if you
> first learn about OpenSSL, otherwise you run the risk to make serious
> errors.
>
> If you are just experimenting to create a message for yourself then you
> have to create the public key because you are then the recipient
> yourself. That has been answered
> onhttp://stackoverflow.com/questions/1169798/m2crypto-package
> --
> Piet van Oostrum
> URL:http://pietvanoostrum.com[PGP 8DAE142BE17999C4]
> Private email: p...@vanoostrum.org
import M2Crypto
from M2Crypto import RSA,SSL
def encrypt():
pk = open('my_key.public.pem', 'rb').read()
rsa = M2Crypto.RSA.load_pub_key(pk) #return a M2Crypto.RSA.RSA_pub
object.
plaintext = 4545479545655576767767686688782344
msg = rsa.public_encrypt(plaintext,RSA.pkcs1_padding)
print msg;
encrypt()
This is code i am refering.
The Problem is coming with .pem file.
I also asked this questions at
http://stackoverflow.com/questions/1176864/problem-with-the-pem-file-closed
which has not been answered .
please help me out
thanks
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open a file in python
pk = open('/home/jayshree/my_key.public.pem' , 'rb').read()
Please tell me how to open a file placed in any directory or in same
directory.
After opening this file i want to use the contain (public key ) for
encryption
thanks
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Re: open a file in python
On Jul 27, 1:09 pm, Kushal Kumaran
wrote:
> On Mon, Jul 27, 2009 at 12:58 PM, jayshree wrote:
> > pk = open('/home/jayshree/my_key.public.pem' , 'rb').read()
>
> > Please tell me how to open a file placed in any directory or in same
> > directory.
>
> > After opening this file i want to use the contain (public key ) for
> > encryption
>
> Does the code you've put into your message not read that file? If you
> get an exception, copy-paste in the traceback message you get into
> your mail.
>
> --
> kushal
try:
pk = open('/home/jayshree/my_key.public.pem' , 'rb').read()
except IOError:
print "Error: can\'t find file or read data"
else:
print "reading from file successfully"
>Still no error it gives .what to do?
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Re: open a file in python
On Jul 27, 2:55 pm, "Diez B. Roggisch" wrote:
> jayshree wrote:
> > On Jul 27, 1:09 pm, Kushal Kumaran
> > wrote:
> >> On Mon, Jul 27, 2009 at 12:58 PM, jayshree
> >> wrote:
> >> > pk = open('/home/jayshree/my_key.public.pem' , 'rb').read()
>
> >> > Please tell me how to open a file placed in any directory or in same
> >> > directory.
>
> >> > After opening this file i want to use the contain (public key ) for
> >> > encryption
>
> >> Does the code you've put into your message not read that file? If you
> >> get an exception, copy-paste in the traceback message you get into
> >> your mail.
>
> >> --
> >> kushal
>
> > try:
> > pk = open('/home/jayshree/my_key.public.pem' , 'rb').read()
> > except IOError:
> > print "Error: can\'t find file or read data"
> > else:
> > print "reading from file successfully"
>
> >>Still no error it gives .what to do?
>
> Erm - so it doesn't give an error - which means you have successfully opened
> a file, and read it's contents.
>
> So what exactly is your problem?
>
> Diez- Hide quoted text -
>
> - Show quoted text -
> The Exact Problem is how to use the key containing by .pem file for
> 'encryption' .
>can i print the contents of the .pem file
see http://stackoverflow.com/questions/1176864/problem-with-the-pem-file
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problem in encryption
hello ,
The community members,
Using following code :
fileHandle = open ('jay1key.py','wb')
#fileHandle = open ('jay1key.pem',rb).read()
print fileHandle.write (data) #data variable is contains the key
fileHandle.close()
otp = 'jyshri69'
pub_key = M2Crypto.RSA.load_pub_key('jay1key.py')
encrypted = pub_key.public_encrypt(otp, M2Crypto.RSA.pkcs1_padding)
print "encrypted text is = "
print "---"
print encrypted
the above code gives me following error :
None
Traceback (most recent call last):
File "RetEnc.py", line 71, in ?
pub_key = M2Crypto.RSA.load_pub_key('jay1key.py')
File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 344,
in load_pub_key
return load_pub_key_bio(bio)
File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 360,
in load_pub_key_bio
rsa_error()
File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 240,
in rsa_error
raise RSAError, m2.err_reason_error_string(m2.err_get_error())
M2Crypto.RSA.RSAError: no start line
not getting how to resolve it ?
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Re: problem in encryption
On Sep 22, 1:44 pm, jayshree wrote:
> hello ,
> The community members,
>
> Using following code :
>
> fileHandle = open ('jay1key.py','wb')
> #fileHandle = open ('jay1key.pem',rb).read()
> print fileHandle.write (data) #data variable is contains the key
> fileHandle.close()
>
> otp = 'jyshri69'
>
> pub_key = M2Crypto.RSA.load_pub_key('jay1key.py')
>
> encrypted = pub_key.public_encrypt(otp, M2Crypto.RSA.pkcs1_padding)
> print "encrypted text is = "
> print "---"
> print encrypted
>
> the above code gives me following error :
> None
> Traceback (most recent call last):
> File "RetEnc.py", line 71, in ?
> pub_key = M2Crypto.RSA.load_pub_key('jay1key.py')
> File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 344,
> in load_pub_key
> return load_pub_key_bio(bio)
> File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 360,
> in load_pub_key_bio
> rsa_error()
> File "/usr/lib/python2.4/site-packages/M2Crypto/RSA.py", line 240,
> in rsa_error
> raise RSAError, m2.err_reason_error_string(m2.err_get_error())
> M2Crypto.RSA.RSAError: no start line
>
> not getting how to resolve it ?
the key looks like this :
-BEGIN RSA PUBLIC KEY-
mQGiBEpz7VIRBADAt9YpYfYHJeGA6d
+G261FHW1uA0YXltCWa7TL6JnIsuxvh9vImUoyMJd6
1xEW4TuROTxGcMMiDemQq6HfV9tLi7ptVBLf/8nUEFoGhxS
+DPJsy46WmlscKHRIEdIkTYhp
uAIMim0q5HWymEqqAfBLwJTOY9sR+nelh0NKepcCqwCgvenJ2R5UgmAh
+sOhIBrh3OahZEED
/2sRGHi4xRWKePFpttXfb2hry2/jURPae/wYfuI6Xw3k5EO593veGS7Zyjnt+7mVY1N5V/
ey
rfXaS3R6GsByG/eRVzRJGU2DSQvmF+q2NC6v2s4KSzr5CVKpn586SGUSg/
aKvXY3EIrpvAGP
rHum1wt6P9m9kr/4X8SdVhj7Jti6A/0TA8C2KYhOn/
hSYAMTmhisHan3g2Cm6yNzKeTiq6/0
ooG/
ffcY81zC6+Kw236VGy2bLrMLkboXPuecvaRfz14gJA9SGyInIGQcd78BrX8KZDUpF1Ek
KxQqL97YRMQevYV89uQADKT1rDBJPNZ+o9f59WT04tClphk/
quvMMuSVILQaamF5c2ggPGph
eXNocmVlQGdtYWlsLmNvbT6IZgQTEQIAJgUCSnPtUgIbAwUJAAFRgAYLCQgHAwIEFQIIAwQW
AgMBAh4BAheAAAoJEFjpOQ2vjFvzS0wAn3vf1A8npIY/DMIFFw0/
eGf0FNekAKCBJnub9GVu
9OUY0nISQf7uZZVyI7kBDQRKc+1SEAQAm7Pink6S5+kfHeUoJVldb
+VAlHdf7BdvKjVeiKAb
dFUa6vR9az+wn8V5asNy/
npEAYnHG2nVFpR8DTlN0eO35p78qXkuWkkpNocLIB3bFwkOCbff
P3yaCZp27Vq+9182bAR2Ah10T1KShjWTS/
wfRpSVECYUGUMSh4bJTnbDA2MAAwUEAIcRhF9N
OxAsOezkiZBm+tG4BgT0+uWchY7fItJdEqrdrROuCFqWkJLY2uTbhtZ5RMceFAW3s
+IYDHLL
PwM1O+ZojhvAkGwLyC4F
+6RCE62mscvDJQsdwS4L25CaG2Aw97HhY7+bG00TWqGLb9JibKie
X1Lk+W8Sde/4UK3Q8tpbiE8EGBECAA8FAkpz7VICGwwFCQABUYAACgkQWOk5Da+MW/
MAAgCg
tfUKLOsrFjmyFu7biv7ZwVfejaMAn1QXEJw6hpvte60WZrL0CpS60A6Q
-END RSA PUBLIC KEY-
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