topic Re: Decrypt MD5CryptoService and TripleDESCryptoService from SAS in SAS Data Management

Decrypt MD5CryptoService and TripleDESCryptoService from SAS

Kayalvizhi — Fri, 21 Jul 2017 11:35:23 GMT

Hi All,

Please let me know how we can decrpt the values by use of salt key. Below are the other details(from .Net).Kindly let me know if any other detail is required.

tDes.Mode = CipherMode.ECB;
tDes.Padding = PaddingMode.PKCS7;

Thanks,
Kayalvizhi

Re: Decrypt MD5CryptoService and TripleDESCryptoService from SAS

Patrick — Fri, 21 Jul 2017 12:41:42 GMT

@Kayalvizhi

Please ask a better formulated question and provide much more detail.

In general: If something is encrypted then you shouldn't be able to decrypt it if you haven't got the key. At least in my mind that's the difference between "encoding" and "encrypting".

The only way to decrypt: The encryption algorithm is reversible and you've got the algorithm needed to decrypt. If so then please post this algorithm and we're eventually able to help you with implementing it using SAS.

....and always provide sample data. What you have (data step creating the data) and what you want (in a form that we can actually implement and test code using your Have and creating the Want).

Re: Decrypt MD5CryptoService and TripleDESCryptoService from SAS

Kurt_Bremser — Fri, 21 Jul 2017 13:03:37 GMT

MD5 creates a hash for a given piece of data. This just so that the data can be verified against the hash, but you cannot (by definition) decrypt the original data out of the hash, simply because the hash has a fixed length, independent of the original data.