class SSHKey

def valid_ssh_public_key?(ssh_public_key)


* ssh_public_key<~String> - "ssh-rsa AAAAB3NzaC1yc2EA...."
==== Parameters

Returns true or false depending on the validity of the public key provided

Validate an existing SSH public key 
def valid_ssh_public_key?(ssh_public_key)
  ssh_type, encoded_key = parse_ssh_public_key(ssh_public_key)
  sections = unpacked_byte_array(ssh_type, encoded_key)
  case ssh_type
    when "ssh-rsa", "ssh-dss"
      sections.size == SSH_CONVERSION[SSH_TYPES[ssh_type]].size
    when "ssh-ed25519"
      sections.size == 1                                # https://tools.ietf.org/id/draft-bjh21-ssh-ed25519-00.html#rfc.section.4
    when "ecdsa-sha2-nistp256", "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521"
      sections.size == 2                                # https://tools.ietf.org/html/rfc5656#section-3.1
    else
      false
  end
rescue
  false
end