Crypto Key Generate Rsa Modulus 1024 Invalid Input

15.12.2020/ Comments off

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An example of asymmetric encryption in python using a public/private keypair - utilizes RSA from PyCrypto library

RSA_example.py

# Inspired from http://coding4streetcred.com/blog/post/Asymmetric-Encryption-Revisited-(in-PyCrypto)

# PyCrypto docs available at https://www.dlitz.net/software/pycrypto/api/2.6/

fromCryptoimportRandom

fromCrypto.PublicKeyimportRSA

importbase64

defgenerate_keys():

# RSA modulus length must be a multiple of 256 and >= 1024

modulus_length=256*4# use larger value in production

privatekey=RSA.generate(modulus_length, Random.new().read)

publickey=privatekey.publickey()

returnprivatekey, publickey

defencrypt_message(a_message , publickey):

encrypted_msg=publickey.encrypt(a_message, 32)[0]

encoded_encrypted_msg=base64.b64encode(encrypted_msg) # base64 encoded strings are database friendly

returnencoded_encrypted_msg

defdecrypt_message(encoded_encrypted_msg, privatekey):

decoded_encrypted_msg=base64.b64decode(encoded_encrypted_msg)

decoded_decrypted_msg=privatekey.decrypt(decoded_encrypted_msg)

returndecoded_decrypted_msg

########## BEGIN ##########

a_message='The quick brown fox jumped over the lazy dog'

privatekey , publickey=generate_keys()

encrypted_msg=encrypt_message(a_message , publickey)

decrypted_msg=decrypt_message(encrypted_msg, privatekey)

print'%s - (%d)'% (privatekey.exportKey() , len(privatekey.exportKey()))

print'%s - (%d)'% (publickey.exportKey() , len(publickey.exportKey()))

print' Original content: %s - (%d)'% (a_message, len(a_message))

print'Encrypted message: %s - (%d)'% (encrypted_msg, len(encrypted_msg))

print'Decrypted message: %s - (%d)'% (decrypted_msg, len(decrypted_msg))

Crypto Key Generate Rsa Modulus 1024 Invalid Input Download

commented Aug 11, 2018

Invalid input detected at crypto key generate rsa. I'm running a 2600 Router with IOS 12.3(25). Does anyone know if this doe? Seems like it should but I haven't been. The label is important, I'll tell you! In a minute why C1801(config)# crypto key generate rsa modulus 1024 label C1801 The name for the keys will be: C1801% The key modulus size is 1024 bits% Generating 1024 bit RSA keys, keys will be non-exportable.OK C1801(config)#.Jan 6 15:22:25.339:%SSH-5-ENABLED: SSH 1.99 has been enabled! Dakabin Tip Trading Hours 1 Aug 2014 R1(config)# ip domain-name R1(config)# crypto key generate rsa modulus 1024. 2 May 2018 If you want to generate RSA key pairs, use the crypto key generate rsa Because the key modulus is not specified, the default key modulus Device(config)# crypto key zeroize rsa. Yo genero una llave de 1024 exportable para una VPN. Crypto key generate rsa exportable modulus 1024% The key modulus size is 1024 bits% Generating 1024 bit RSA keys, keys will be exportable.OK despues quiero enrolar. Crypto ca enroll CERTIFICADO. Pero al enrollar mi terminal genera una llave de 512 bits. Porque puede ser eso?

I ran this code but got an error. It is python 3.7 running the latest PyCryptodome
Would you mind helping? I am a little lost..

File 'C:(the file location and name but i'm not going to list it).py', line 29
print '%s - (%d)' % (privatekey.exportKey() , len(privatekey.exportKey()))
^
SyntaxError: invalid syntax

commented Aug 15, 2018

@maxharrison These print statements indicate it was written for python 2. It could be easily fixable by making use of the print function instead of the print statement., however, no guarantees.

commented Aug 31, 2018

I am trying to learn this stuff. When I run this, I get the following error.
return (self.key._encrypt(c),) TypeError: argument 1 must be int, not str
I googled and found a bit on b64encode to be imported or encrypt(hash_pass, 32)[0] to include .encode('hex') but to no avail. Can you help?

commented Sep 18, 2018•
edited

Hi @anoopsaxena76,

Just change the encryption line as this:
encrypted_msg = encrypt_message(a_message.encode('utf-8'), publickey)

I just did it myself, it works like a charm

commented Aug 28, 2019

I ran this code but got an error. It is python 3.7 running the latest PyCryptodome

Hey, I'm trying to run this code on Python 3.7 too. What did you change apart from that print statement to adapt the code to Pycrytodome?
I get the error:

File 'C:/Users/..(don't want to show this bit)/Gavcoin3.py', line 15, in
from crypto.Hash import SHA
File 'C:Users(don't want to show this bit)AppDataLocalProgramsPythonPython37libsite-packagescryptoHashSHA.py', line 24, in
from Crypto.Hash.SHA1 import doc, new, block_size, digest_size
ModuleNotFoundError: No module named 'Crypto'

Please help!

Crypto key generate rsa modulus 1024 invalid input in java

commented Sep 13, 2019

Crypto Key Generate Rsa Modulus 1024 Invalid Input

Hi @GavinAren,

I hope you've already solved your issue but if not:
Look in your python directory for /Lib/site-packages/crypto and change it to Crypto. (Capital C)

Crypto Key Generate Rsa Command

commented Oct 2, 2019

Crypto Key Generate Rsa Modulus 1024 Invalid Input In Java

I ran this code but got an error. It is python 3.7 running the latest PyCryptodome
Hey, I'm trying to run this code on Python 3.7 too. What did you change apart from that print statement to adapt the code to Pycrytodome?
I get the error:
File 'C:/Users/..(don't want to show this bit)/Gavcoin3.py', line 15, in
from crypto.Hash import SHA
File 'C:Users(don't want to show this bit)AppDataLocalProgramsPythonPython37libsite-packagescryptoHashSHA.py', line 24, in
from Crypto.Hash.SHA1 import doc, new, block_size, digest_size
ModuleNotFoundError: No module named 'Crypto'
Please help!

PyCrypto is written and tested using Python version 2.1 through 3.3. Python
1.5.2 is not supported. My POC resolves that pycrypto is obsoleted in python3.7. Pycryptodome is working alternative of it, but unfortunately it doesn't support plain RSA cryptography.

de4ached.netlify.app

Crypto Key Generate Rsa Modulus 1024 Invalid Input