twisted.conch.ssh.keys

Class	`BadFingerPrintFormat`	Raises when unsupported fingerprint formats are presented to fingerprint.
Class	`BadKeyError`	Raised when a key isn't what we expected from it.
Class	`EncryptedKeyError`	Raised when an encrypted key is presented to fromString/fromFile without a password.
Class	`FingerprintFormats`	Constants representing the supported formats of key fingerprints.
Class	`Key`	No summary
Class	`PassphraseNormalizationError`	Raised when a passphrase contains Unicode characters that cannot be normalized using the available Unicode character database.
Function	`_getPersistentRSAKey`	This function returns a persistent `Key`.
Function	`_normalizePassphrase`	Normalize a passphrase, which may be Unicode.
Variable	`_curveTable`	Undocumented
Variable	`_secToNist`	Undocumented

def _getPersistentRSAKey(location, keySize=4096): (source)

This function returns a persistent Key.

The key is loaded from a PEM file in location. If it does not exist, a key with the key size of keySize is generated and saved.

Parameters
location:`twisted.python.filepath.FilePath`	Where the key is stored.
keySize:`int`	The size of the key, if it needs to be generated.
Returns
`Key`	A persistent key.

def _normalizePassphrase(passphrase): (source)

Normalize a passphrase, which may be Unicode.

If the passphrase is Unicode, this follows the requirements of NIST 800-63B, section 5.1.1.2 for Unicode characters in memorized secrets: it applies the Normalization Process for Stabilized Strings using NFKC normalization. The passphrase is then encoded using UTF-8.

Parameters
passphrase:`bytes` or `unicode` or `None`	The passphrase to normalize.
Returns
`bytes` or `None`	The normalized passphrase, if any.
Raises
`PassphraseNormalizationError`	if the passphrase is Unicode and cannot be normalized using the available Unicode character database.

_curveTable = (source)

Undocumented

_secToNist: dict[bytes, bytes] = (source)

Undocumented