U g @sXdZdgZddlmZmZmZmZmZmZm Z m Z eddZ Gddde Z ddZd S) z" Electronic Code Book (ECB) mode. EcbMode)load_pycryptodome_raw_lib VoidPointercreate_string_bufferget_raw_buffer SmartPointerc_size_t c_uint8_ptris_writeable_bufferzCryptodome.Cipher._raw_ecbak int ECB_start_operation(void *cipher, void **pResult); int ECB_encrypt(void *ecbState, const uint8_t *in, uint8_t *out, size_t data_len); int ECB_decrypt(void *ecbState, const uint8_t *in, uint8_t *out, size_t data_len); int ECB_stop_operation(void *state); c@s,eZdZdZddZd ddZd ddZdS) ra*Electronic Code Book (ECB)*. This is the simplest encryption mode. Each of the plaintext blocks is directly encrypted into a ciphertext block, independently of any other block. This mode is dangerous because it exposes frequency of symbols in your plaintext. Other modes (e.g. *CBC*) should be used instead. See `NIST SP800-38A`_ , Section 6.1. .. _`NIST SP800-38A` : http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf :undocumented: __init__ cCsV|j|_t|_t||j}|r6td|t|jtj |_| dS)zCreate a new block cipher, configured in ECB mode. :Parameters: block_cipher : C pointer A smart pointer to the low-level block cipher instance. z)Error %d while instantiating the ECB modeN) block_sizer_state raw_ecb_libZECB_start_operationgetZ address_of ValueErrorrZECB_stop_operationrelease)selfZ block_cipherresultr?/tmp/pip-unpacked-wheel-_q8s9isk/Cryptodome/Cipher/_mode_ecb.py__init__Ds  zEcbMode.__init__NcCs|dkrtt|}n4|}t|s*tdt|t|krJtdt|t|jt |t |t t|}|r|dkrtdtd||dkrt |SdSdS)abEncrypt data with the key set at initialization. The data to encrypt can be broken up in two or more pieces and `encrypt` can be called multiple times. That is, the statement: >>> c.encrypt(a) + c.encrypt(b) is equivalent to: >>> c.encrypt(a+b) This function does not add any padding to the plaintext. :Parameters: plaintext : bytes/bytearray/memoryview The piece of data to encrypt. The length must be multiple of the cipher block length. :Keywords: output : bytearray/memoryview The location where the ciphertext must be written to. If ``None``, the ciphertext is returned. :Return: If ``output`` is ``None``, the ciphertext is returned as ``bytes``. Otherwise, ``None``. N4output must be a bytearray or a writeable memoryview9output must have the same length as the input (%d bytes)2Data must be aligned to block boundary in ECB modez%Error %d while encrypting in ECB mode) rlenr TypeErrorrr Z ECB_encryptr rr rr)r plaintextoutput ciphertextrrrrencrypt^s*   zEcbMode.encryptcCs|dkrtt|}n4|}t|s*tdt|t|krJtdt|t|jt |t |t t|}|r|dkrtdtd||dkrt |SdSdS)aeDecrypt data with the key set at initialization. The data to decrypt can be broken up in two or more pieces and `decrypt` can be called multiple times. That is, the statement: >>> c.decrypt(a) + c.decrypt(b) is equivalent to: >>> c.decrypt(a+b) This function does not remove any padding from the plaintext. :Parameters: ciphertext : bytes/bytearray/memoryview The piece of data to decrypt. The length must be multiple of the cipher block length. :Keywords: output : bytearray/memoryview The location where the plaintext must be written to. If ``None``, the plaintext is returned. :Return: If ``output`` is ``None``, the plaintext is returned as ``bytes``. Otherwise, ``None``. Nrrrrz%Error %d while decrypting in ECB mode) rrr rrr Z ECB_decryptr rr rr)rrrrrrrrdecrypts*   zEcbMode.decrypt)N)N)__name__ __module__ __qualname____doc__rrr rrrrr3s 7cKs.||}|j|_|r&tdt|t|S)aQInstantiate a cipher object that performs ECB encryption/decryption. :Parameters: factory : module The underlying block cipher, a module from ``Cryptodome.Cipher``. All keywords are passed to the underlying block cipher. See the relevant documentation for details (at least ``key`` will need to be presentzUnknown parameters for ECB: %s)Z_create_base_cipherr rstrr)factorykwargsZ cipher_staterrr_create_ecb_ciphers r(N)r$__all__ZCryptodome.Util._raw_apirrrrrrr r r objectrr(rrrrs (