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Update possible_ans.md

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This commit is contained in:
Bill Buchanan
2021-02-08 18:34:15 +00:00
committed by GitHub
parent 13aba06676
commit 740fb62cc5
1 changed files with 10 additions and 7 deletions
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unit02_symmetric/lab/possible_ans.md
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@@ -285,22 +285,25 @@ def decrypt(ciphertext,key, mode):
encobj = AES.new(key,mode)
return(encobj.decrypt(ciphertext))
key = hashlib.sha256(password).digest()
key = hashlib.sha256(password.encode()).digest()
plaintext = Padding.appendPadding(plaintext,blocksize=Padding.AES_blocksize,mode='CMS')
print "After padding (CMS): "+binascii.hexlify(bytearray(plaintext))
print ("After padding (CMS): ",binascii.hexlify(plaintext.encode()))
ciphertext = encrypt(plaintext,key,AES.MODE_ECB)
print "Cipher (ECB): "+binascii.hexlify(bytearray(ciphertext))
ciphertext = encrypt(plaintext.encode(),key,AES.MODE_ECB)
print ("Cipher (ECB): ",binascii.hexlify(ciphertext))
plaintext = decrypt(ciphertext,key,AES.MODE_ECB)
plaintext = Padding.removePadding(plaintext,mode='CMS')
print " decrypt: "+plaintext
plaintext = Padding.removePadding(plaintext.decode(),blocksize=Padding.AES_blocksize,mode='CMS')
plaintext=val
print (" decrypt: ",plaintext)
```
A sample is [here](https://repl.it/@billbuchanan/ch02an03#main.py).
A sample run is:
<pre>
napier@napier-virtual-machine:~$ python d1.py hello hello123