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Generate a key for use with
:func:`.crypto_secretstream_xchacha20poly1305_init_push`.
s unsigned char[]( R t newt. crypto_secretstream_xchacha20poly1305_KEYBYTESR t, crypto_secretstream_xchacha20poly1305_keygent buffer( t keybuf( ( sC /tmp/pip-install-A1qMVe/pynacl/nacl/bindings/crypto_secretstream.pyR , s
t+ crypto_secretstream_xchacha20poly1305_statec B` s& e Z d Z d d d g Z d � Z RS( sN
An object wrapping the crypto_secretstream_xchacha20poly1305 state.
t statebuft rawbuft tagbufc C` s+ t j d t � | _ d | _ d | _ d S( s! Initialize a clean state object.s unsigned char[]N( R R t0 crypto_secretstream_xchacha20poly1305_STATEBYTESR
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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
sB State must be a crypto_secretstream_xchacha20poly1305_state objectt raisings Key must be a bytes sequences Invalid key lengths unsigned char []i s Unexpected failure( R t
isinstanceR t exct TypeErrort bytest lenR t
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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
sB State must be a crypto_secretstream_xchacha20poly1305_state objectR s Message is not bytess Message is too longs% Additional data must be bytes or Nones unsigned char[]i s Unexpected failureN( R R R R R R R t6 crypto_secretstream_xchacha20poly1305_MESSAGEBYTES_MAXR R t, crypto_secretstream_xchacha20poly1305_ABYTESR R R t NULLR t* crypto_secretstream_xchacha20poly1305_pushR
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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
sB State must be a crypto_secretstream_xchacha20poly1305_state objectR s Header must be a bytes sequences Invalid header lengths Key must be a bytes sequences Invalid key lengths unsigned char *i s Unexpected failureN( R R R R R R R R R R R R R R R t/ crypto_secretstream_xchacha20poly1305_init_pullR
R! ( R" t headerR# R% ( ( sC /tmp/pip-install-A1qMVe/pynacl/nacl/bindings/crypto_secretstream.pyR/ � s2
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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)
sB State must be a crypto_secretstream_xchacha20poly1305_state objectR sO State must be initialized using crypto_secretstream_xchacha20poly1305_init_pulls Ciphertext is not bytess Ciphertext is too shorts Ciphertext is too longs% Additional data must be bytes or Nones unsigned char[]i s Unexpected failureN( R R R R R R R R R R R' R& R R R R( R t* crypto_secretstream_xchacha20poly1305_pullR
R! R
t int( R" t cR+ t mlenR. R% ( ( sC /tmp/pip-install-A1qMVe/pynacl/nacl/bindings/crypto_secretstream.pyR1 � sR
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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
sB State must be a crypto_secretstream_xchacha20poly1305_state objectR N( R R R R R R t+ crypto_secretstream_xchacha20poly1305_rekeyR
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N(' t
__future__R R R t naclR R t nacl._sodiumR R t nacl.exceptionsR t, crypto_secretstream_xchacha20poly1305_abytesR' t1 crypto_secretstream_xchacha20poly1305_headerbytesR t. crypto_secretstream_xchacha20poly1305_keybytesR t6 crypto_secretstream_xchacha20poly1305_messagebytes_maxR& t0 crypto_secretstream_xchacha20poly1305_statebytesR t1 crypto_secretstream_xchacha20poly1305_tag_messaget1 crypto_secretstream_xchacha20poly1305_TAG_MESSAGEt. crypto_secretstream_xchacha20poly1305_tag_pusht. crypto_secretstream_xchacha20poly1305_TAG_PUSHt/ crypto_secretstream_xchacha20poly1305_tag_rekeyt/ crypto_secretstream_xchacha20poly1305_TAG_REKEYt/ crypto_secretstream_xchacha20poly1305_tag_finalt/ crypto_secretstream_xchacha20poly1305_TAG_FINALR t objectR R R R) R/ R1 R5 ( ( ( sC /tmp/pip-install-A1qMVe/pynacl/nacl/bindings/crypto_secretstream.pyt <module> s( , < 0 L