U ֫[J@sddlmZmZmZddlmZddlmZddl m Z m Z ddl m Z e Ze Ze Ze Ze Ze Ze Ze Ze ZdZ dZ!dd Z"ed d d fd d Z#d d d efd dZ$ddZ%ddZ&ddZ'dS))absolute_importdivisionprint_function) integer_types) exceptions)ffilib)ensurez!{0} length greater than {1} bytesz{0} greater than {1}cCstt|tdtjdtt|tdtjdtt|tdtjdtt|tdtjdt|tktdttj dtt |t kt dt tj dtt |t kt dt tj dtt |tkt d ttj dd S) zCheck hash paramterszKey must be a bytes sequenceZraisingzSalt must be a bytes sequencezPerson must be a bytes sequencez%Digest size must be an integer numberZ Digest_sizeZKeyZSaltZPersonN)r isinstancebytesexc TypeErrorrcrypto_generichash_BYTES_MAX_TOOBIGformat ValueErrorlencrypto_generichash_KEYBYTES_MAX _OVERLONGcrypto_generichash_SALTBYTES crypto_generichash_PERSONALBYTES) digest_sizekeysaltpersonrB/usr/lib/python3/dist-packages/nacl/bindings/crypto_generichash.py _checkparams's@           rc Cst||||tt|tdtjdtd|}tdt}tdt }t ||t |t ||t |t |||t ||t |||}t|dkdtjdt||ddS)aLOne shot hash interface :param data: the input data to the hash function :param digest_size: must be at most :py:data:`.crypto_generichash_BYTES_MAX`; the default digest size is :py:data:`.crypto_generichash_BYTES` :type digest_size: int :param key: must be at most :py:data:`.crypto_generichash_KEYBYTES_MAX` long :type key: bytes :param salt: must be at most :py:data:`.crypto_generichash_SALTBYTES` long; will be zero-padded if needed :type salt: bytes :param person: must be at most :py:data:`.crypto_generichash_PERSONALBYTES` long: will be zero-padded if needed :type person: bytes :return: digest_size long digest :rtype: bytes #Input data must be a bytes sequencer unsigned char[]unsigned char []rUnexpected failureN)rr r r r rrnewrrmemmoverrZ(crypto_generichash_blake2b_salt_personal RuntimeErrorbuffer) datarrrrZdigest_salt_personrcrrr!generichash_blake2b_salt_personalJs,     r,cCst||||tdt}tdt}tdt}t||t|t||t|t ||t||||}t |dkdt j d|S)a7 Create a new initialized blake2b hash state :param key: must be at most :py:data:`.crypto_generichash_KEYBYTES_MAX` long :type key: bytes :param salt: must be at most :py:data:`.crypto_generichash_SALTBYTES` long; will be zero-padded if needed :type salt: bytes :param person: must be at most :py:data:`.crypto_generichash_PERSONALBYTES` long: will be zero-padded if needed :type person: bytes :param digest_size: must be at most :py:data:`.crypto_generichash_BYTES_MAX`; the default digest size is :py:data:`.crypto_generichash_BYTES` :type digest_size: int :return: an initizialized state buffer :rtype: object r!r"rr#r ) rrr$crypto_generichash_STATEBYTESrrr%rrZ-crypto_generichash_blake2b_init_salt_personalr r r&)rrrrstatebufr)r*r+rrrgenerichash_blake2b_init}s"    r/cCs@tt|tdtjdt||t|}t|dkdtjddS)zUpdate the blake2b hash state :param statebuf: an initialized blake2b state buffer as returned from :py:func:`.crypto_generichash_blake2b_init` :type statebuf: object :param data: :type data: bytes r r rr#N) r r r r rrZ!crypto_generichash_blake2b_updaterr&)r.r(r+rrrgenerichash_blake2b_updates  r0cCsBtdt}t|||}t|dkdtjdt||ddS)zFinalize the blake2b hash state and return the digest. :param statebuf: :type statebuf: object :param digest_size: :type digest_size: int :return: the blake2 digest of the passed-in data stream :rtype: bytes r!rr#r N) rr$rrZ crypto_generichash_blake2b_finalr r r&r')r.rZ_digestr+rrrgenerichash_blake2b_finals  r1cCstdt}t||t|S)z-Return a copy of the given blake2b hash stater!)rr$r-r%)r.Znewstaterrrgenerichash_blake2b_state_copys r2N)(Z __future__rrrZsixrZnaclrr Z nacl._sodiumrrZnacl.exceptionsr Z crypto_generichash_blake2b_bytesZcrypto_generichash_BYTESZ$crypto_generichash_blake2b_bytes_minZcrypto_generichash_BYTES_MINZ$crypto_generichash_blake2b_bytes_maxrZ#crypto_generichash_blake2b_keybytesZcrypto_generichash_KEYBYTESZ'crypto_generichash_blake2b_keybytes_minZcrypto_generichash_KEYBYTES_MINZ'crypto_generichash_blake2b_keybytes_maxrZ$crypto_generichash_blake2b_saltbytesrZ(crypto_generichash_blake2b_personalbytesrZcrypto_generichash_statebytesr-rrrr,r/r0r1r2rrrrs:   $ 3 /