&xj7- xUddlmZmZmZmZddlmZddlm Z m Z ddl m Z e j Zeed<e jZeed<e jZeed<e jZeed<e jZeed <e jZeed <e jZeed <e jZeed <e jZ eed <de!fdZ"GddZ#de#de!de!fdZ$defde#de!dee!dede!f dZ%de#de!de!ddfdZ& dde#de!dee!dee!effdZ'de#ddfdZ(dS) )OptionalTupleUnioncast) exceptions)ffilib)ensure,crypto_secretstream_xchacha20poly1305_ABYTES1crypto_secretstream_xchacha20poly1305_HEADERBYTES.crypto_secretstream_xchacha20poly1305_KEYBYTES6crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX0crypto_secretstream_xchacha20poly1305_STATEBYTES1crypto_secretstream_xchacha20poly1305_TAG_MESSAGE.crypto_secretstream_xchacha20poly1305_TAG_PUSH/crypto_secretstream_xchacha20poly1305_TAG_REKEY/crypto_secretstream_xchacha20poly1305_TAG_FINALreturnctjdt}tj|tj|ddS)zd Generate a key for use with :func:`.crypto_secretstream_xchacha20poly1305_init_push`. unsigned char[]N)rnewr r ,crypto_secretstream_xchacha20poly1305_keygenbuffer)keybufs RC:\Projects\Historical\venv\Lib\site-packages\nacl/bindings/crypto_secretstream.pyrr4sG W6F4V<<< :f  aaa  c"eZdZdZgdZddZdS)+crypto_secretstream_xchacha20poly1305_statezN An object wrapping the crypto_secretstream_xchacha20poly1305 state. )statebufrawbuftagbufrNcttttf}t jdt |_d|_d|_ dS)z Initialize a clean state object.rN) rbytes bytearray memoryviewrrrrr r!)self ByteStrings r__init__z4crypto_secretstream_xchacha20poly1305_state.__init__Js@5)Z78 $'G  <% %  -1 ,0 r)rN)__name__ __module__ __qualname____doc__ __slots__r(rrrrBs? 100I 1 1 1 1 1 1rrstatekeyctt|tdtjtt|t dtjtt |tkdtjtj dt}tj |j||}t|dkdtjtj|ddS) a\ Initialize a crypto_secretstream_xchacha20poly1305 encryption buffer. :param state: a secretstream state object :type state: crypto_secretstream_xchacha20poly1305_state :param key: must be :data:`.crypto_secretstream_xchacha20poly1305_KEYBYTES` long :type key: bytes :return: header :rtype: bytes BState must be a crypto_secretstream_xchacha20poly1305_state objectraisingKey must be a bytes sequenceInvalid key lengthzunsigned char []rUnexpected failureN)r isinstancerexc TypeErrorr#lenr ValueErrorrrr r /crypto_secretstream_xchacha20poly1305_init_pushr RuntimeErrorr)r/r0 headerbufrcs rr=r=Vs 5EFFL   3&    CBB 9I <  3  B 27(#2BCCCC :i  ##rNmadtagc dtt|tdtjtt|t dtjtt |tkdtjt|dupt|t dtjt |tz}|j t |j |krtj d||_ |tj }d}nt |}tj|j|j tj |t ||||}t|dkd tjtj|j |ddS) a Add an encrypted message to the secret stream. :param state: a secretstream state object :type state: crypto_secretstream_xchacha20poly1305_state :param m: the message to encrypt, the maximum length of an individual message is :data:`.crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX`. :type m: bytes :param ad: additional data to include in the authentication tag :type ad: bytes or None :param tag: the message tag, usually :data:`.crypto_secretstream_xchacha20poly1305_TAG_MESSAGE` or :data:`.crypto_secretstream_xchacha20poly1305_TAG_FINAL`. :type tag: int :return: ciphertext :rtype: bytes r2r3zMessage is not byteszMessage is too longN%Additional data must be bytes or Nonerrr7)r r8rr9r:r#r;rr<r r rrNULLr *crypto_secretstream_xchacha20poly1305_pushrr>r)r/rArBrCclenadlenr@s rrGrGs2 5EFFL   :a  !7OOOO  AHH   d +jU++/  q66@ @D |s5<00477w0$77  z XB 7     A     B 27(#2BCCCC :elD ) )!!! ,,rheaderctt|tdtjtt|t dtjtt |tkdtjtt|t dtjtt |tkdtj|j tj d|_ tj|j||}t|d kd tjdS) a Initialize a crypto_secretstream_xchacha20poly1305 decryption buffer. :param state: a secretstream state object :type state: crypto_secretstream_xchacha20poly1305_state :param header: must be :data:`.crypto_secretstream_xchacha20poly1305_HEADERBYTES` long :type header: bytes :param key: must be :data:`.crypto_secretstream_xchacha20poly1305_KEYBYTES` long :type key: bytes r2r3zHeader must be a bytes sequencezInvalid header lengthr5r6Nzunsigned char *rr7)r r8rr9r:r#r;r r<r r!rrr /crypto_secretstream_xchacha20poly1305_init_pullrr>)r/rJr0r@s rrLrLsI$ 5EFFL   65!!)    F HH  3&    CBB  |w011 <   B 27(#2BCCCCCCrcc tt|tdtjt|jdudtjtt|tdtjtt|tkdtjtt|ttzkdtjt|dupt|tdtjt|tz }|j t|j |krtj d ||_ |tj}d }nt|}tj|j|j tj|j|t|||}t|d kd tjtj|j |ddt)t+t|jd fS) aM Read a decrypted message from the secret stream. :param state: a secretstream state object :type state: crypto_secretstream_xchacha20poly1305_state :param c: the ciphertext to decrypt, the maximum length of an individual ciphertext is :data:`.crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAX` + :data:`.crypto_secretstream_xchacha20poly1305_ABYTES`. :type c: bytes :param ad: additional data to include in the authentication tag :type ad: bytes or None :return: (message, tag) :rtype: (bytes, int) r2r3NzOState must be initialized using crypto_secretstream_xchacha20poly1305_init_pullzCiphertext is not byteszCiphertext is too shortzCiphertext is too longrErrr7)r r8rr9r:r!r<r#r;r rr rrrFr *crypto_secretstream_xchacha20poly1305_pullrr>rintr)r/rMrBmlenrIr@s rrOrOs+* 5EFFL    D  >  1e!    A>>!   A B: ; !  d +jU++/  q66@ @D |s5<00477w0$77  z XB 7      A    B 27(#2BCCCC 5<&&qqq) D % %a ()) rctt|tdtjt j|jdS)a Explicitly change the encryption key in the stream. Normally the stream is re-keyed as needed or an explicit ``tag`` of :data:`.crypto_secretstream_xchacha20poly1305_TAG_REKEY` is added to a message to ensure forward secrecy, but this method can be used instead if the re-keying is controlled without adding the tag. :param state: a secretstream state object :type state: crypto_secretstream_xchacha20poly1305_state r2r3N)r r8rr9r:r +crypto_secretstream_xchacha20poly1305_rekeyr)r/s rrSrSRsL 5EFFL  3ENCCCCCr)N))typingrrrrnaclrr9 nacl._sodiumrr nacl.exceptionsr ,crypto_secretstream_xchacha20poly1305_abytesr rP__annotations__1crypto_secretstream_xchacha20poly1305_headerbytesr .crypto_secretstream_xchacha20poly1305_keybytesr 6crypto_secretstream_xchacha20poly1305_messagebytes_maxr0crypto_secretstream_xchacha20poly1305_statebytesr1crypto_secretstream_xchacha20poly1305_tag_messager.crypto_secretstream_xchacha20poly1305_tag_pushr/crypto_secretstream_xchacha20poly1305_tag_rekeyr/crypto_secretstream_xchacha20poly1305_tag_finalrr#rrr=rGrLrOrSr.rrrbs^0////////////""""""!!!!!!!!""""""5C466-c:C9;;237C688/?C>@@79C8::1# :C9;;237C688/8C79908C7990 !e ! ! ! !11111111()$ 6)$=B)$ )$)$)$)$^@ @-@- 6@- @- @- @-  @-@-@-@-F2D 62D 2D 2D 2D2D2D2DpUU 6U U U 5#: UUUUpD 6D DDDDDDr