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int Salsa20_stream_init(uint8_t *key, size_t keylen,
uint8_t *nonce, size_t nonce_len,
void **pSalsaState);
int Salsa20_stream_destroy(void *salsaState);
int Salsa20_stream_encrypt(void *salsaState,
const uint8_t in[],
uint8_t out[], size_t len);
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� | j � � � t |� � t |� � t t |� � � � � � }|rt d|z � � �|�t |� � S dS )a� Encrypt a piece of data.
Args:
plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
Keyword Args:
output(bytes/bytearray/memoryview): The location where the ciphertext
is written to. If ``None``, the ciphertext is returned.
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Nz4output must be a bytearray or a writeable memoryviewz9output must have the same length as the input (%d bytes)z&Error %d while encrypting with Salsa20) r r r � TypeErrorr r �Salsa20_stream_encryptr r r
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ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
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output(bytes/bytearray/memoryview): The location where the plaintext
is written to. If ``None``, the plaintext is returned.
Returns:
If ``output`` is ``None``, the plaintext is returned as ``bytes``.
Otherwise, ``None``.
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:keyword key: The secret key to use. It must be 16 or 32 bytes long.
:type key: bytes/bytearray/memoryview
:keyword nonce:
A value that must never be reused for any other encryption
done with this key. It must be 8 bytes long.
If not provided, a random byte string will be generated (you can read
it back via the ``nonce`` attribute of the returned object).
:type nonce: bytes/bytearray/memoryview
:Return: a :class:`Crypto.Cipher.Salsa20.Salsa20Cipher` object
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