3DES (Triple DES) stands for Triple Data Encryption Standard
It's an encryption algorithm that:
Takes the original DES (Data Encryption Standard) algorithm
Applies it three times to each data block
Uses three different keys in sequence:
Encrypt with Key 1
Decrypt with Key 2
Encrypt with Key 3
Key characteristics:
Block size: 64 bits
Key size: 168 bits (three 56-bit keys)
More secure than single DES
Slower than newer algorithms like AES
Still used in some legacy systems
While 3DES is more secure than single DES, it's generally considered obsolete for new applications, with AES (Advanced Encryption Standard) being the preferred modern encryption standard.
3DES (Triple DES) is actually an encryption algorithm, not a hashing algorithm.
A 3DES hash (or more accurately, a cryptographic hash such as MD5, SHA-1, or SHA-256) provided by the vendor is used to verify that the downloaded file has not been altered or corrupted during the download process.
Integrity: The hash ensures the file's content is intact. When you calculate the hash of the downloaded file and compare it to the one provided by the vendor, matching values indicate the file has not been tampered with or corrupted
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