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ModuleType)ÚUnioné )ÚWÚ W_inversec ó^ e Zd ZdZdedeeef fdZdeeef defdZ deeef defd Z
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y
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) ÚKWPModea Key Wrap with Padding (KWP) mode.
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This is a deterministic Authenticated Encryption (AE) mode
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for protecting cryptographic keys. See `NIST SP800-38F`_.
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It provides both confidentiality and authenticity, and it designed
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so that any bit of the ciphertext depends on all bits of the plaintext.
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This mode is only available for ciphers that operate on 128 bits blocks
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(e.g., AES).
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.. _`NIST SP800-38F`: http://csrc.nist.gov/publications/nistpubs/800-38F/SP-800-38F.pdf
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:undocumented: __init__
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ÚfactoryÚkeyc ó¸ |j | _ | j dk7 r t d« || _ |j ||j « | _ d| _ y )Né zXKey Wrap with Padding mode is only available for ciphers that operate on 128 bits blocksF)Ú
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block_sizeÚ
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ValueErrorÚ_factoryÚnewÚMODE_ECBÚ_cipherÚ_done)Úselfr
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r s õj H:\项ç®\archive\æµè¯ç»\èæ¬\Change_password\venv_build\Lib\site-packages\Crypto/Cipher/_mode_kwp.pyÚ__init__zKWPMode.__init__ sZ ð "×,Ñ,Ø ??bÒ Ü ð @ó Að Að Ø {{ 3¨×(8Ñ(8Ó9 Ø
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ó Ú plaintextÚreturnc ó | j r t d« t |« dk( r t d« t |« dk\ r t d« dt |« z
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dz }|d|z z }dt j d t |« « z }t |« dk( r | j
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||z « }|S )
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z»Encrypt and authenticate (wrap) a cryptographic key.
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Args:
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plaintext:
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The cryptographic key to wrap.
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Returns:
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The wrapped key.
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ú(The cipher cannot be used more than oncer z%The plaintext must be at least 1 bytel zThe plaintext is too longé ó ó ¦YY¦ú>I)r r ÚlenÚstructÚpackr Úencryptr )r r ÚpadlenÚpaddedÚAIVÚress r Úsealz KWPMode.seal' sÈ ð ::Ü Ð GÓHÐ Hä y>QÒ Ü Ð DÓEÐ Eä y>WÒ $Ü Ð 8Ó9Ð 9àc)nÑ$¨Ñ)ØW vÑ -Ñ-à!¤F§K¡K°´c¸)³nÓ$EÑEä v;!Ò Ø,,×&Ñ& s¨V¡|Ó4Cð
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ciphertextc ó$ | j r t d« t |« dz r t d« t |« dk r t d« t |« dk( r | j j |« }nt | j |« }|dd dk7 r t d « t j d
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|z
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d d |z k7 r t d « |dt |« |z
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S )aw Decrypt and authenticate (unwrap) a cryptographic key.
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Args:
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ciphertext:
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The cryptographic key to unwrap.
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It must be at least 16 bytes long, and its length
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must be a multiple of 8.
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Returns:
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The original key.
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Raises: ValueError
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If the ciphertext or the key are not valid.
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r r z3The ciphertext must have length multiple of 8 bytesr z-The ciphertext must be at least 24 bytes longNé r zIncorrect decryptionr r é r )r r r! r Údecryptr r" Úunpack)r r* ÚSÚPlenr% s r ÚunsealzKWPMode.unsealG s ð ::Ü Ð GÓHÐ Hä z?QÒ Ü Ð RÓSÐ Sä z?RÒ Ü Ð LÓMÐ Mä z?bÒ Ø ×$Ñ$ ZÓ0Aä$,,¨
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__module__Ú __qualname__Ú__doc__r r ÚbytesÚ bytearrayr r) r2 © r r r r sa ñð Ø$ð àE 9Ð ,Ñ-ó ð e E¨9Ð$4Ñ 5ð ¸%ó ð@*$ u¨iÐ'7Ñ!8ð *$¸Uô *$r r r
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Úkwargsr c óv |d }t | |« S # t $ r }t dt |« z « d}~ww xY w)a! Create a new block cipher in Key Wrap with Padding mode.
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Args:
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factory:
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A block cipher module, taken from `Crypto.Cipher`.
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The cipher must have block length of 16 bytes, such as AES.
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Keywords:
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key:
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The secret key to use to seal or unseal.
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r zMissing parameter:N)ÚKeyErrorÚ TypeErrorÚstrr )r
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r: r Úes r Ú_create_kwp_cipherr@ t sF ð 7ØUmô 7CÓ Ð øô ò 7ÜÐ,¬s°1«vÑ5Ó6Ð6ûð7ús 83³8) r" Útypesr Útypingr Ú_mode_kwr r Úobjectr r7 r8 r@ r9 r r ú<module>rE sF ðÛ å Ý ç "ôh$fô h$ðV!
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ð !Ø!& u¨iÐ'7Ñ!8ð!Ø=Dô!r
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