&xj^ddlmZddlZddlZddlmZddlmZej j Z ej j Z ej jZej jZej jZej jZe dz Zej jZej jZej jZej jZej jZ ej j!Z"ej j#Z$ej j%Z&ej j'Z(ej j)Z*de$zZ+de&zZ,e(e*ej-j.fde/de0d e0d e/d e/d ej-j1d e0fdZ2e$e&fde0d e/d e/d e0fdZ3de0de0d e4fdZ5dS))castN) exceptions)ensuresizepasswordsaltopslimitmemlimitencoderreturnc ttdtjtt |t kdt dt |dtjtj ||\}}}|dz} | tj ||ttd|z||| |S) al Derive a ``size`` bytes long key from a caller-supplied ``password`` and ``salt`` pair using the scryptsalsa208sha256 memory-hard construct. the enclosing module provides the constants - :py:const:`.OPSLIMIT_INTERACTIVE` - :py:const:`.MEMLIMIT_INTERACTIVE` - :py:const:`.OPSLIMIT_SENSITIVE` - :py:const:`.MEMLIMIT_SENSITIVE` - :py:const:`.OPSLIMIT_MODERATE` - :py:const:`.MEMLIMIT_MODERATE` as a guidance for correct settings respectively for the interactive login and the long term key protecting sensitive data use cases. :param size: derived key size, must be between :py:const:`.BYTES_MIN` and :py:const:`.BYTES_MAX` :type size: int :param password: password used to seed the key derivation procedure; it length must be between :py:const:`.PASSWD_MIN` and :py:const:`.PASSWD_MAX` :type password: bytes :param salt: **RANDOM** salt used in the key derivation procedure; its length must be exactly :py:const:`.SALTBYTES` :type salt: bytes :param opslimit: the time component (operation count) of the key derivation procedure's computational cost; it must be between :py:const:`.OPSLIMIT_MIN` and :py:const:`.OPSLIMIT_MAX` :type opslimit: int :param memlimit: the memory occupation component of the key derivation procedure's computational cost; it must be between :py:const:`.MEMLIMIT_MIN` and :py:const:`.MEMLIMIT_MAX` :type memlimit: int :rtype: bytes :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. .. versionadded:: 1.2 Not available in minimal buildraisingzThe salt must be exactly z, not z bytes longi)maxmemdklen)r AVAILABLEexcUnavailableErrorlen SALTBYTES ValueErrornaclbindings nacl_bindings_pick_scrypt_paramsencode%crypto_pwhash_scryptsalsa208sha256_llrint) rr r r r r n_log2rprs CC:\Projects\Historical\venv\Lib\site-packages\nacl/pwhash/scrypt.pykdfr&;sr ($   D Y 99c$iiii ! =AA(LFAq F >> ;;   ai  <    cttdtjtj|||S)a$ 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 rr)rrrrrr&crypto_pwhash_scryptsalsa208sha256_str)r r r s r%strr*sJ, ($ = ? ?(H  r' password_hashc ttdtjtt |t kdt jjztj t j ||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 rrz/The password hash must be exactly %s bytes long) rrrrr PWHASH_SIZErr+crypto_pwhash_scryptsalsa208sha256_STRBYTESr-crypto_pwhash_scryptsalsa208sha256_str_verify)r+r s r%verifyr0s ($   Mk)9 - C D  = F Fx  r')6typingr nacl.bindingsr nacl.encodingrrnacl.exceptionsrrr._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_MIN MEMLIMIT_MIN/crypto_pwhash_scryptsalsa208sha256_MEMLIMIT_MAX MEMLIMIT_MAX/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MIN OPSLIMIT_MIN/crypto_pwhash_scryptsalsa208sha256_OPSLIMIT_MAX OPSLIMIT_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*boolr0r'r%rZs$""""""""""""]N M @ M F M F ] H ] H  1$ M F M F }L }L }L }L  MI MI MG MG,,,,'&%)]%= XX XX X X  X ] " X XXXXz)( B%5Tr'