Yes I was interested in the character count as if I encrypted the input, I’d need to consider enough room for storage. I was tempted to build a 254 character field to store it, but then curiosity got the better of me and I wanted to know if there was an algorithm to calculate the expected length of the encrypted text..
Yes I do remember you from Nomura. How have you been. Thank you for the info.. something that I can digest over the weekend.. Joe From: Michael Latham Sent: Friday, April 20, 2012 5:47 PM Newsgroups: public.remedy.arsystem.general To: [email protected] Subject: Re: Working with ENCRYPT() function... ** Hey Joe - How have things been since Nomura - if you remember me from that project and you are in fact the same Joe De'Souza. To move along, encryption algorithms vary. If I am not mistaken Remedy ARS uses DES block-cipher encryption in the ENCRYPT function. DES in and of itself is symmetric from an algorithm standpoint. It uses one 64-bit key to encrypt a block of plaintext that is 64-bits into ciphered text. It has one parity bit for each byte of the provided key which generates a key strength which is only 56-bits. Per BMC Documentation: "The output is limited to the size of the field used for output, including the base-64 encoding. Therefore, you are limited to encrypting a string that is 3/4 the size of the output field." Using the passphrase method as a way to generate the encrypted text is achieved using, most probably, a key derivation and salt combination. In order to decrypt ciphered text you would need to "code" an external DES ciphering utility in your language of choice that would encrypt the plain text based on the key provided or decrypt the ciphered text using the key provided. As long as you have the key you can go back and forth with the encryption/decryption. By the way, why do you need to know the length of the output string? I am assuming when you say length you mean character count or something similar. Mike -------------------------------------------------------------------------------- Date: Fri, 20 Apr 2012 13:48:37 -0400 From: [email protected] Subject: Working with ENCRYPT() function... To: [email protected] ** Is there a known algorithm to calculate the length of the output results of ENCRYPT based on the length of the input string and the encryption key parameters? I vaguely remember that the length is 120. Or is that only the length of the encrypted value in Field 123? Also how would one decrypt the contents of Field 123 if that is used for storing a password that is used for authenticating into an external app or wsdl? Joe _attend WWRUG12 www.wwrug.com ARSlist: "Where the Answers Are"_ _attend WWRUG12 www.wwrug.com ARSlist: "Where the Answers Are"_ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are"
