#include <ice_key.h>
Inheritance diagram for ice_key:
Public Member Functions | |
| ice_key (int blocks, bool randomize=true) | |
| the number "blocks" specifies the number of blocks in the key. | |
| virtual | ~ice_key () |
| IMPLEMENT_CLASS_NAME ("ice_key") | |
| bool | set (const byte_array &key) |
| sets the key schedule of an ICE key. | |
| bool | encrypt (const byte_array &plain_text, byte_array &cipher_text) const |
| encrypt a block of data with the given ICE key. | |
| bool | decrypt (const byte_array &cipher_text, byte_array &plain_text) const |
| decrypt a block of data with the given ICE key. | |
| int | key_size () const |
| returns the key size in bytes. | |
| int | blocks () const |
| returns the number of blocks in the key. | |
| int | block_size () const |
| returns the block size in bytes. | |
This supports key based encryption similar to DES, but without some of the limitations and flaws.
Definition at line 32 of file ice_key.h.
| ice_key::ice_key | ( | int | blocks, | |
| bool | randomize = true | |||
| ) |
the number "blocks" specifies the number of blocks in the key.
a block is composed of block_size() bytes (which is currently eight, and will probably continue to be such). thus, for three blocks, the key size must be twenty-four bytes. if "randomize" is true, then any chunk of the bytes to be encoded that are not a multiple of eight are padded with random bytes; otherwise, they are padded with zero bytes.
Definition at line 81 of file ice_key.cpp.
| ice_key::~ice_key | ( | ) | [virtual] |
| ice_key::IMPLEMENT_CLASS_NAME | ( | "ice_key" | ) |
| bool ice_key::set | ( | const byte_array & | key | ) |
sets the key schedule of an ICE key.
true is returned if the "key" was successfully used. it can fail if its length is not 8 times the number of blocks set in the constructor.
Definition at line 361 of file ice_key.cpp.
References FUNCDEF, array< contents >::length(), and LOG.
Referenced by main(), and secret_string::secret_string().
| bool ice_key::encrypt | ( | const byte_array & | plain_text, | |
| byte_array & | cipher_text | |||
| ) | const |
encrypt a block of data with the given ICE key.
true is returned on success. reasons for failure would include not setting the key.
Definition at line 233 of file ice_key.cpp.
References chaos::inclusive(), array< contents >::length(), memory_assign(), array< contents >::overwrite(), and array< contents >::reset().
Referenced by secret_string::encrypt_string(), and main().
| bool ice_key::decrypt | ( | const byte_array & | cipher_text, | |
| byte_array & | plain_text | |||
| ) | const |
decrypt a block of data with the given ICE key.
true is returned on success. reasons for failure would include not setting the key.
Definition at line 261 of file ice_key.cpp.
References array< contents >::length(), and array< contents >::reset().
Referenced by secret_string::decrypt_string(), and main().
| int ice_key::key_size | ( | ) | const [inline] |
| int ice_key::blocks | ( | ) | const [inline] |
| int ice_key::block_size | ( | ) | const [inline] |
1.5.1