> Hello, > > I'm trying to compare the results of the openssl tool with the cryptool > 1.4.31 > > + Filename topsecret.txt which only contains the character 'a' > + Encrypt it with DES using CBC mode with key and iv = 0 produces the > result '32ea a0fa 4f77 fb92' > > user@debian:~$ xxd topsecret.txt > 0000000: 61 a > > user@debian:~$ openssl version > OpenSSL 0.9.8o 01 Jun 2010 > > user@debian:~$ openssl enc -des-cbc -K 0 -iv 0 -nosalt -in topsecret.txt | > xxd > 0000000: 32ea a0fa 4f77 fb92 2...Ow.. > > user@debian:~$ > > > + If I use the cryptool 1.4.31 to do the same exercise the result is '0C29 > 5D71 8258 D464' > > > + I also noticed that openssl generates the same output for different > modes > of des e.g. > > user@debian:~$ openssl enc -des-ecb -K 0 -iv 0 -nosalt -in topsecret.txt | > xxd > 0000000: 32ea a0fa 4f77 fb92 2...Ow.. > > While if I do the same in Cryptool the output for the ECB mode is: > > '841B D8A4 2931 FCF5' > > > Any ideas? > > thank you, > Luis >
Reference http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation With an initialization vector of zeros, the CBC and ECB modes are the same for the first block of cypher algorithm output. - Steve ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
