/usr/lib/python3/dist-packages/nacl/pwhash/__pycache__
Edit: /usr/lib/python3/dist-packages/nacl/pwhash/__pycache__/scrypt.cpython-310.pyc (5836B)
o
aJ @ s< d dl mZ d dlZd dlZd dlmZ d dlmZ ej j
Zej jZ
ej jZej jZej jZej jZed Zej jZej jZej jZej jZej jZ ej j!Z"ej j#Z$ej j%Z&ej j'Z(ej j)Z*de$ Z+de& Z,e(e*ej-j.fde/de0d e0d
e/de/dej-j1d
e0fddZ2e$e&fde0d
e/de/d
e0fddZ3de0de0d
e4fddZ5dS ) )castN)
exceptions)ensure sizepasswordsaltopslimitmemlimitencoderreturnc
C sz t tdtjd t t|tkdtt|f tjd tj ||\}}}|d } |
tjj||tt
d| ||| | dS )al
Derive a ``size`` bytes long key from a caller-supplied
``password`` and ``salt`` pair using the scryptsalsa208sha256
memory-hard construct.
the enclosing module provides the constants
- :py:const:`.OPSLIMIT_INTERACTIVE`
- :py:const:`.MEMLIMIT_INTERACTIVE`
- :py:const:`.OPSLIMIT_SENSITIVE`
- :py:const:`.MEMLIMIT_SENSITIVE`
- :py:const:`.OPSLIMIT_MODERATE`
- :py:const:`.MEMLIMIT_MODERATE`
as a guidance for correct settings respectively for the
interactive login and the long term key protecting sensitive data
use cases.
:param size: derived key size, must be between
:py:const:`.BYTES_MIN` and
:py:const:`.BYTES_MAX`
:type size: int
:param password: password used to seed the key derivation procedure;
it length must be between
:py:const:`.PASSWD_MIN` and
:py:const:`.PASSWD_MAX`
:type password: bytes
:param salt: **RANDOM** salt used in the key derivation procedure;
its length must be exactly :py:const:`.SALTBYTES`
:type salt: bytes
:param opslimit: the time component (operation count)
of the key derivation procedure's computational cost;
it must be between
:py:const:`.OPSLIMIT_MIN` and
:py:const:`.OPSLIMIT_MAX`
:type opslimit: int
:param memlimit: the memory occupation component
of the key derivation procedure's computational cost;
it must be between
:py:const:`.MEMLIMIT_MIN` and
:py:const:`.MEMLIMIT_MAX`
:type memlimit: int
:rtype: bytes
:raises nacl.exceptions.UnavailableError: If called when using a
minimal build of libsodium.
.. versionadded:: 1.2
Not available in minimal buildraisingz.The salt must be exactly %s, not %s bytes longi )maxmemdklen)r AVAILABLEexcUnavailableErrorlen SALTBYTES
ValueErrornaclbindings nacl_bindings_pick_scrypt_paramsencode%crypto_pwhash_scryptsalsa208sha256_llr int)
r r r r
r r n_log2rpr r# 4/usr/lib/python3/dist-packages/nacl/pwhash/scrypt.pykdf; s6 9
r% c C s t tdtjd tj| ||S )a$
Hashes a password with a random salt, using the memory-hard
scryptsalsa208sha256 construct and returning an ascii string
that has all the needed info to check against a future password
The default settings for opslimit and memlimit are those deemed
correct for the interactive user login case.
:param bytes password:
:param int opslimit:
:param int memlimit:
:rtype: bytes
:raises nacl.exceptions.UnavailableError: If called when using a
minimal build of libsodium.
.. versionadded:: 1.2
r r )r r r r r r &crypto_pwhash_scryptsalsa208sha256_str)r r
r r# r# r$ str s r'
password_hashc C s> t tdtjd t t| tkdtjj tj d tj
| |S )aW
Takes the output of scryptsalsa208sha256 and compares it against
a user provided password to see if they are the same
:param password_hash: bytes
:param password: bytes
:rtype: boolean
:raises nacl.exceptions.UnavailableError: If called when using a
minimal build of libsodium.
.. versionadded:: 1.2
r r z/The password hash must be exactly %s bytes long)r r r r r PWHASH_SIZEr r +crypto_pwhash_scryptsalsa208sha256_STRBYTESr -crypto_pwhash_scryptsalsa208sha256_str_verify)r( r r# r# r$ verify s
r, )6typingr
nacl.bindingsr
nacl.encodingr r nacl.exceptionsr r r* _strbytes_plus_one&has_crypto_pwhash_scryptsalsa208sha256r ,crypto_pwhash_scryptsalsa208sha256_STRPREFIX STRPREFIX,crypto_pwhash_scryptsalsa208sha256_SALTBYTESr -crypto_pwhash_scryptsalsa208sha256_PASSWD_MIN
PASSWD_MIN-crypto_pwhash_scryptsalsa208sha256_PASSWD_MAX
PASSWD_MAXr) ,crypto_pwhash_scryptsalsa208sha256_BYTES_MIN BYTES_MIN,crypto_pwhash_scryptsalsa208sha256_BYTES_MAX BYTES_MAX/crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MINMEMLIMIT_MIN/crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MAXMEMLIMIT_MAX/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MINOPSLIMIT_MIN/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MAXOPSLIMIT_MAX7crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_INTERACTIVEOPSLIMIT_INTERACTIVE7crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_INTERACTIVEMEMLIMIT_INTERACTIVE5crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_SENSITIVEOPSLIMIT_SENSITIVE5crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_SENSITIVEMEMLIMIT_SENSITIVEOPSLIMIT_MODERATEMEMLIMIT_MODERATEencoding
RawEncoderr bytesEncoderr% r' boolr, r# r# r# r$
st
]
!