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Chilkat2-Python Examples

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(Chilkat2-Python) Generate RSA SSH Key

Generates an RSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY).

Chilkat2 Python Downloads

Python Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

import sys
import chilkat2

key = chilkat2.SshKey()

# numBits may range from 384 to 4096.  Typical values are
# 1024 or 2048.  (must be a multiple of 64)
# A good choice for the exponent is 65537.  Chilkat recommends
# always using this value.
numBits = 2048
exponent = 65537
success = key.GenerateRsaKey(numBits,exponent)
if (success != True):
    print("Bad params passed to RSA key generation method.")
    sys.exit()

# Note: Generating a public/private key pair is CPU intensive
# and may take a short amount of time (more than few seconds,
# but less than a minute).

# Export the RSA private key to OpenSSH, PuTTY, and XML and save.
exportEncrypted = False
exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
# Chilkat provides a SaveText method for convenience...
success = key.SaveText(exportedKey,"privkey_openssh_unencrypted.pem")

# Export with encryption to OpenSSH private key format:
key.Password = "secret"
exportEncrypted = True
exportedKey = key.ToOpenSshPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_openssh_encrypted.pem")

# Export the RSA private key to unencrypted PuTTY format:
exportEncrypted = False
exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_putty_unencrypted.ppk")

# Export the RSA private key to encrypted PuTTY format:
key.Password = "secret"
exportEncrypted = True
exportedKey = key.ToPuttyPrivateKey(exportEncrypted)
success = key.SaveText(exportedKey,"privkey_putty_encrypted.ppk")

# Export private key to XML:
exportedKey = key.ToXml()
success = key.SaveText(exportedKey,"privkey.xml")

# ----------------------------------------------------
# Now for the public key....
# ----------------------------------------------------

# The Secure Shell (SSH) Public Key File Format
# is documented in RFC 4716.
exportedKey = key.ToRfc4716PublicKey()
success = key.SaveText(exportedKey,"pubkey_rfc4716.pub")

# OpenSSH has a separate public-key file format, which
# is also supported by Chilkat SshKey:
exportedKey = key.ToOpenSshPublicKey()
success = key.SaveText(exportedKey,"pubkey_openSsh.pub")

print("Finished.")

 

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