U ΂dI @s>UddlZddlmZddlmZddlmZmZddlm Z e ej Z dZ dZdZdZdZdZdZdZdZdZdZdZdZdZdZe reededdZ eZe Ze!Ze"Ze#Ze$Ze%Ze&Ze'Ze(Ze)Ze*Ze+Ze,Ze-Z.e/e0d<e1Z2e/e0d<e3Z4e/e0d <e5Z6e/e0d <e7Z8e/e0d <e9Z:e/e0d <e;Ze/e0d<e?Z@e/e0d<eedeAddZBeCe0d<eDZEe/e0d<eFZGe/e0d<eHZIe/e0d<eJZKe/e0d<eLZMe/e0d<eNZOe/e0d<ePZQe/e0d<eRZSe/e0d<eTZUe/e0d<eVZWe/e0d<eedeXddZYeCe0d<eZZ[e/e0d<e\Z]e/e0d<e^Z_e/e0d<e`Zae/e0d<ebZce/e0d <edZee/e0d!<efZge/e0d"<ehZie/e0d#<ejZke/e0d$<elZme/e0d%<eZneZoeZpeZqeZreZsd&Ztd'Zud(Zvd)Zwewfe/e/e/e/dd*d+d,Zxe/e/ee/e/e/fd-d.d/Zyd0ewfeCeCe/e/e/e/e/eCd1d2d3ZzeneofeCe/e/eCd4d5d6Z{eCeCe d7d8d9Z|e/e/e/dd:d;d<Z}e/eCeCe/e/e/eCd=d>d?Z~eCe/e/e/eCd@dAdBZeCeCe d7dCdDZeZdS)EN)Tuple)ffilib)ensurechar *crypto_pwhash_ALG_ARGON2I13crypto_pwhash_ALG_ARGON2ID13crypto_pwhash_ALG_DEFAULTcrypto_pwhash_SALTBYTEScrypto_pwhash_STRBYTEScrypto_pwhash_PASSWD_MINcrypto_pwhash_PASSWD_MAXcrypto_pwhash_BYTES_MINcrypto_pwhash_BYTES_MAXcrypto_pwhash_argon2i_STRPREFIX"crypto_pwhash_argon2i_MEMLIMIT_MIN"crypto_pwhash_argon2i_MEMLIMIT_MAX"crypto_pwhash_argon2i_OPSLIMIT_MIN"crypto_pwhash_argon2i_OPSLIMIT_MAX*crypto_pwhash_argon2i_OPSLIMIT_INTERACTIVE*crypto_pwhash_argon2i_MEMLIMIT_INTERACTIVE'crypto_pwhash_argon2i_OPSLIMIT_MODERATE'crypto_pwhash_argon2i_MEMLIMIT_MODERATE(crypto_pwhash_argon2i_OPSLIMIT_SENSITIVE(crypto_pwhash_argon2i_MEMLIMIT_SENSITIVE crypto_pwhash_argon2id_STRPREFIX#crypto_pwhash_argon2id_MEMLIMIT_MIN#crypto_pwhash_argon2id_MEMLIMIT_MAX#crypto_pwhash_argon2id_OPSLIMIT_MIN#crypto_pwhash_argon2id_OPSLIMIT_MAX+crypto_pwhash_argon2id_OPSLIMIT_INTERACTIVE+crypto_pwhash_argon2id_MEMLIMIT_INTERACTIVE(crypto_pwhash_argon2id_OPSLIMIT_MODERATE(crypto_pwhash_argon2id_MEMLIMIT_MODERATE)crypto_pwhash_argon2id_OPSLIMIT_SENSITIVE)crypto_pwhash_argon2id_MEMLIMIT_SENSITIVE??li)nrpmaxmemreturncCst|dkdtjdt|dkdtjdt||d@dkdtjdt|dkdtjdt|t|kdttjdt|dd |>ktjd|d |}td }t|d ||ktjdd ||d d }t|t|ktjdt|tj|ktjdt|||kdtjddS)NrzInvalid block sizeZraisingzInvalid parallelization factorz Cost factor must be a power of 2zCost factor must be at least 2zp*r is greater than {} z7Memory limit would be exceeded with the choosen n, r, p)rexc ValueError SCRYPT_PR_MAXformat UINT64_MAXsysmaxsize)r)r*r+r,ZBleniZVlenr=X/var/www/html/myproject/myenv/lib/python3.8/site-packages/nacl/bindings/crypto_pwhash.py_check_memory_occupations2   r?)opslimitmemlimitr-cCs|dkr d}d}||dkrRd}|d|}tddD]}d||dkr6qq6nT||d}tddD]}d||dkrhqqh|dd|}|d krd }||}|||fS) z/Python implementation of libsodium's pickparamsir3r/r4r(r2r1r')range)r@rAr*r+ZmaxnZn_log2Zmaxrpr=r=r> nacl_bindings_pick_scrypt_paramss$   rD@)passwdsaltr)r*r+dklenr,r-c Csttdtjdtt|ttdtt|ttdtt|ttdtt|ttdtt|ttdt||||t d|}t |t ||t |||||| }t|dkdtjdt t d||ddS)a Derive a cryptographic key using the ``passwd`` and ``salt`` given as input. The work factor can be tuned by by picking different values for the parameters :param bytes passwd: :param bytes salt: :param bytes salt: *must* be *exactly* :py:const:`.SALTBYTES` long :param int dklen: :param int opslimit: :param int n: :param int r: block size, :param int p: the parallelism factor :param int maxmem: the maximum available memory available for scrypt's operations :rtype: bytes :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. Not available in minimal buildr.z uint8_t[]r$Unexpected failure in key derivationrN)r&has_crypto_pwhash_scryptsalsa208sha256r5UnavailableError isinstanceint TypeErrorbytesr?rnewr%crypto_pwhash_scryptsalsa208sha256_lllen RuntimeErrorbuffercast) rFrGr)r*r+rHr,bufretr=r=r>rR s: rR)rFr@rAr-cCsPttdtjdtdt}t||t |||}t|dkdtj dt |S)a Derive a cryptographic key using the ``passwd`` and ``salt`` given as input, returning a string representation which includes the salt and the tuning parameters. The returned string can be directly stored as a password hash. See :py:func:`.crypto_pwhash_scryptsalsa208sha256` for a short discussion about ``opslimit`` and ``memlimit`` values. :param bytes passwd: :param int opslimit: :param int memlimit: :return: serialized key hash, including salt and tuning parameters :rtype: bytes :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. rIr.char[]rz&Unexpected failure in password hashing) rrKr5rLrrQSCRYPT_STRBYTESr&crypto_pwhash_scryptsalsa208sha256_strrSrTstring)rFr@rArWrXr=r=r>r[Es& r[) passwd_hashrFr-cCsVttdtjdtt|tdkdtjdt||t|}t|dkdtj ddS)a9 Verifies the ``passwd`` against the ``passwd_hash`` that was generated. Returns True or False depending on the success :param passwd_hash: bytes :param passwd: bytes :rtype: boolean :raises nacl.exceptions.UnavailableError: If called when using a minimal build of libsodium. rIr.r/zInvalid password hashrWrong passwordT) rrKr5rLrSrZr6r-crypto_pwhash_scryptsalsa208sha256_str_verifyInvalidkeyErrorr]rFrXr=r=r>r_qs" r_)r@rAalgr-cCs|tkrn|tkr"tdtn|tkr:tdt|tkrTtdtq|tkrtdtnx|tkr|t krtdt n|t krtdt |t krtdt q|t krtdt n t ddS)Nz"memlimit must be at least {} bytesz!memlimit must be at most {} byteszopslimit must be at least {}zopslimit must be at most {}zUnsupported algorithm)rrr5r6r8rrrr rrrr rO)r@rArbr=r=r>_check_argon2_limits_algsfrc)outlenrFrGr@rArbr-c Cstt|ttjdtt|ttjdtt|ttjdtt|ttjdtt|ttjdt|tkrtd t|t krtd t n|t krtd t t |||t d|}t|||t|||||}t|dkdtjdt ||ddS) a Derive a raw cryptographic key using the ``passwd`` and the ``salt`` given as input to the ``alg`` algorithm. :param outlen: the length of the derived key :type outlen: int :param passwd: The input password :type passwd: bytes :param salt: :type salt: bytes :param opslimit: computational cost :type opslimit: int :param memlimit: memory cost :type memlimit: int :param alg: algorithm identifier :type alg: int :return: derived key :rtype: bytes r.z"salt must be exactly {} bytes longz*derived key must be at least {} bytes longz)derived key must be at most {} bytes longzunsigned char[]rrJN)rrMrNr5rOrPrSr r6r8rrrcrrQrZ crypto_pwhashrTrU)rdrFrGr@rArboutbufrXr=r=r>crypto_pwhash_algsR   rf)rFr@rArbr-cCstt|ttdtt|ttdtt|ttdt|||tdd}t ||t ||||}t|dkdt j dt |S)a Derive a cryptographic key using the ``passwd`` given as input and a random salt, returning a string representation which includes the salt, the tuning parameters and the used algorithm. :param passwd: The input password :type passwd: bytes :param opslimit: computational cost :type opslimit: int :param memlimit: memory cost :type memlimit: int :param alg: The algorithm to use :type alg: int :return: serialized derived key and parameters :rtype: bytes r.rYr1rrJ)rrMrNrOrPrcrrQrcrypto_pwhash_str_algrSr5rTr\)rFr@rArbrerXr=r=r>rgs&  rgcCsftt|ttdtt|ttdtt|dkdtjdt||t|}t|dkdtj ddS)a4 Verifies the ``passwd`` against a given password hash. 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