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Bill Buchanan
2021-02-18 20:02:52 +00:00
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unit04_public_key/lab/README.md
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@@ -11,7 +11,7 @@ Note: If you are using Python 3, instead of "pip install pycrypto" you can insta
### A.1
The following defines a public key that is used with PGP email encryption:
<pre>
```
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v2
@@ -43,7 +43,7 @@ ssAIbCaBlQkzfbPvrMzdTIP+AXg6++K9SnO9N/FRPYzjUSEmpRp+ox31WymvczcU
RmyUquF+/zNnSBVgtY1rzwaYi05XfuxG0WHVHPTtRyJ5pF4HSqiuvk6Z/4z3bw==
=ZrP+
-----END PGP PUBLIC KEY BLOCK-----
</pre>
```
Using the following Web page, determine the owner of the key, and the ID on the key:
@@ -75,18 +75,22 @@ uW6FQth0pKaWc3haoqxbjIA7q2rF+G0Kx3z9ZDPZGU3NmBfzpD9ByU1ZBtbgKC8ATVZzwj15AeteOnbj
Using the following code:
```python
# https://asecuritysite.com/encryption/rsa_example
from Crypto.PublicKey import RSA
from Crypto.Util import asn1
from base64 import b64decode
from Crypto.Cipher import PKCS1_OAEP
import base64
msg="Pob7AQZZSml618nMwTpx3V74N45x/rTimUQeTl0yHq8F0dsekZgOT385Jls1HUzWCx6ZRFPFMJ1RNYR2Yh7AkQtFLVx9lYDfb/Q+SkinBIBX59ER3/fDhrVKxIN4S6h2QmMSRblh4KdVhyY6cOxu+g48Jh7TkQ2Ig93/nCpAnYQ="
privatekey = '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'
binPrivKey = "-----BEGIN RSA PRIVATE KEY-----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\nNXCCvRjQhpNVhlor7y4FC2p3thje9xox6QiwNr/5siyccw==\n-----END RSA PRIVATE KEY-----"
keyDER = b64decode(privatekey)
keys = RSA.importKey(keyDER)
ciphertext=base64.b64decode("uW6FQth0pKaWc3haoqxbjIA7q2rF+G0Kx3z9ZDPZGU3NmBfzpD9ByU1ZBtbgKC8ATVZzwj15AeteOnbjO3EHQC4A5Nu0xKTWpqpngYRGGmzMGtblW3wBlNQYovDsRUGt+cJK7RD0PKn6PMNqK5EQKCD6394K/gasQ9zA6fKn3f0=")
dmsg = keys.decrypt(b64decode(msg))
print dmsg
privKeyObj = RSA.importKey(binPrivKey)
cipher = PKCS1_OAEP.new(privKeyObj)
message = cipher.decrypt(ciphertext)
print
print ("====Decrypted===")
print ("Message:",message)
```