3des

In cryptography, Triple DES, or 3DES, is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA) block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block.

Aes

Advanced Encryption Standard (AES) is a cryptographic block cipher algorithm.

Slower faster

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"Should be as fast as 3des aes turned out to be much from question Why is AES more secure than DES? |

"Furthermore 3des is from question Can we implement 512 key size with Triple Des algorithm |

Others

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3des is from question HTTP vs HTTPS performance |

This seems like a step backwards as aes is the current standard while 3des from question ASPNET_REGIIS: Place AES key and IV into a KeyContainer |

Ek3 dk2 ek1 plaintext that is the definition of triple des 3des not des that is encrypt plaintext with des as with key 1 decrypt that result with key 2 encrypt that result with key 3 3des or triple des encrypts three time with des;so aes would be from question AES using mathematical notation |

3des implementations may be less vulnerable to side channel attacks although it certainly is not immune from it;aes from question Why to use 3DES and Blowfish instead of AES |

Des is the least secure 3des is from question Encrypt and decrypt xml file content |

Note that the security margin of 3des from question AES256 vs 3DES 256 key detection |