The Data Encryption Standard (DES) is a symmetric-key block cipher published by the National Institute of Standards and Technology (NIST). DES is an implementation of a Feistel Cipher. It uses 16 round Feistel structure. The block size is 64-bit. I read about 3DES encryption but I don't understand exactly what the specific meaning of key size is. For example I found that 3DES supports 64, 128, 192, and 256 bits key size. What are all the possible key sizes supported by 3DES? Is there any function to determine if a key is valid for 3DES or not?
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Triple DES: DES « Security « Java.,. decrypt, or generate a key. The second argument is the name of a file. from which the key is read or to which it is.
-->Definition
Creates an instance of a cryptographic object to perform the TripleDES algorithm.
- Jun 30, 2004 Hey Tony, A big if belated thank you - I employed this article to get a leg up on TripleDES encryption some years ago. Now, due to ever more demanding industry standards, I am being asked to validate or document as authoritatively as possible that this algorithm does indeed do TripleDES encryption.
- TRIPLE DES Decryption Online. In cryptography, Triple DES (3DES), officially the Triple Data Encryption Algorithm (TDEA or Triple DEA), is a symmetric-key block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to.
Overloads
| Create() | Creates an instance of a cryptographic object to perform the TripleDES algorithm. |
| Create(String) | Creates an instance of a cryptographic object to perform the specified implementation of the TripleDES algorithm. |
Creates an instance of a cryptographic object to perform the TripleDES algorithm.
Returns
An instance of a cryptographic object.
Examples
Triple Des Key Generator Online Free
The following code example shows how to create and use a TripleDES object to encrypt and decrypt data in a file.
The following code example shows how to create and use a TripleDES object to encrypt and decrypt data in memory.
Remarks
Triple Des Key Generator Online No Download
Creates a new instance of the TripleDES class.
See also
Creates an instance of a cryptographic object to perform the specified implementation of the TripleDES algorithm.
Parameters
- str
- String
The name of the specific implementation of TripleDES to use.
Returns
An instance of a cryptographic object.
Examples
The following code example shows how to create and use a TripleDES object to encrypt and decrypt data in a file.
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3des Key Generator Online
The following code example shows how to create and use a TripleDES object to encrypt and decrypt data in memory.