o Ìn~bÝã@s(ddgZddlTddd„Zddd„ZdS) ÚpadÚunpadé)Ú*Úpkcs7cCs„|t|ƒ|}|dkrt|ƒ|}||S|dkr*tdƒ|dt|ƒ}||S|dkr>tdƒtdƒ|d}||Stdƒ‚)aØApply standard padding. Args: data_to_pad (byte string): The data that needs to be padded. block_size (integer): The block boundary to use for padding. The output length is guaranteed to be a multiple of :data:`block_size`. style (string): Padding algorithm. It can be *'pkcs7'* (default), *'iso7816'* or *'x923'*. Return: byte string : the original data with the appropriate padding added at the end. rÚx923réÚiso7816é€úUnknown padding style)ÚlenÚbchrÚ ValueError)Z data_to_padÚ block_sizeÚstyleÚ padding_lenÚpadding©rúB/usr/local/lib/python3.10/dist-packages/Cryptodome/Util/Padding.pyr's úüÿcCs.t|ƒ}|dkr tdƒ‚||rtdƒ‚|dvrWt|dƒ}|dks)|t||ƒkr-tdƒ‚|dkrC|| d …t|ƒ|krBtd ƒ‚nM|| d…tdƒ|dkrVtd ƒ‚n9|d krŒ|| td ƒ¡}|dkso|t||ƒkrstdƒ‚|dkr‹|d|d …tdƒ|dkr‹tdƒ‚ntdƒ‚|d | …S)aóRemove standard padding. Args: padded_data (byte string): A piece of data with padding that needs to be stripped. block_size (integer): The block boundary to use for padding. The input length must be a multiple of :data:`block_size`. style (string): Padding algorithm. It can be *'pkcs7'* (default), *'iso7816'* or *'x923'*. Return: byte string : data without padding. Raises: ValueError: if the padding is incorrect. rz$Zero-length input cannot be unpaddedzInput data is not padded)rréÿÿÿÿrzPadding is incorrect.rNzPKCS#7 padding is incorrect.z ANSI X.923 padding is incorrect.rr z ISO 7816-4 padding is incorrect.r )r r ZbordÚminr Úrfind)Z padded_datarrZ pdata_lenrrrrrCs2 ÿÿ(€N)r)Ú__all__ZCryptodome.Util.py3compatrrrrrrÚs!