double DES is less secure than triple DES
triple DES is much slower than double DES
double DES is within the range of brute force attack. but triple DES is not in the range of brute force attack.
There's a project that's implemented Triple DES in C over at SourceForge called "Easy Triple DES." It's in alpha, but should at the very least give you a head start. (See link.)
There are a few disadvantages of Triple DES including processing times in which the more complex the longer it takes. Another disadvantage is when the file or hard drive crash, it's hard to recover.
For some time it has been common practice to protect and tansport a key for DES encryption with triple-DES (3DES). The function follows an encrypt-decrypt-encrypt (EDE) sequence. Decrypt sequence is simply the same (encrypt) operation with the keys reversed.
Easy! at first i thought double dees, however that is not right. The answer is Despair. Check out iriddler.com
fot the past 25 years single des algorithm was used. But now triple des is used in atm cards for the encryption and decryption.
des images doubles
des carottes (fem., with a double 't')
3 DES of (Triple Data Encryption Standard)
3DES (Triple DES) maintains backward compatibility with DES by using the same block size and key structure as DES, which allows existing DES algorithms to function without modification. When a 3DES implementation uses a single key (the first key of the three), it effectively operates as DES, ensuring that DES-encrypted data can be decrypted by 3DES systems. This design allows users to transition to 3DES without needing to re-encrypt their existing DES data.
"une carotte, des carottes" (single "r", double "t")
Brooklyn, Missouri.
Triple DES (3DES) enhances the security of the original DES encryption by applying the DES algorithm three times to each data block. It typically involves three key operations: encrypting the data with the first key, decrypting it with a second key, and encrypting it again with a third key. This process effectively increases the key length and complexity, making it more resistant to brute-force attacks. Although 3DES improves security over DES, it is now considered less secure than newer algorithms like AES and is being phased out in favor of stronger encryption standards.