<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div dir="ltr" id="yui_3_16_0_1_1447236893190_13169"><br class="" id="yui_3_16_0_1_1447236893190_13205">I am running FIPS test vectors against AES-CFB. I am getting correct results for aes-cfb128 and aes-cfb8 tests but not getting correct values for aes-cfb1. The details are given below. Am I missing something ? <br class="" id="yui_3_16_0_1_1447236893190_13207"><br class="" id="yui_3_16_0_1_1447236893190_13209">===========================<br class="" id="yui_3_16_0_1_1447236893190_13211">Correct Results for CFB128<br class="" id="yui_3_16_0_1_1447236893190_13213">===========================<br class="" id="yui_3_16_0_1_1447236893190_13215"><br class="" id="yui_3_16_0_1_1447236893190_13217">KEY = 10a58869d74be5a374cf867cfb473859<br class="" id="yui_3_16_0_1_1447236893190_13219">IV = 00000000000000000000000000000000<br class="" id="yui_3_16_0_1_1447236893190_13221">PLAINTEXT = 00000000000000000000000000000000<br class="" id="yui_3_16_0_1_1447236893190_13223">CIPHERTEXT = 6d251e6944b051e04eaa6fb4dbf78465<br class="" id="yui_3_16_0_1_1447236893190_13225"><br class="" id="yui_3_16_0_1_1447236893190_13227">[root@Con]# echo 00000000000000000000000000000000 | xxd -r -p > plaintext<br class="" id="yui_3_16_0_1_1447236893190_13229">[root@Con]# <br class="" id="yui_3_16_0_1_1447236893190_13231">[root@Con]# openssl enc -aes-128-cfb -p -nopad -nosalt -K 10a58869d74be5a374cf867cfb473859 -iv 00000000000000000000000000000000 -in plaintext -out ciphertext<br class="" id="yui_3_16_0_1_1447236893190_13233">key=10A58869D74BE5A374CF867CFB473859<br class="" id="yui_3_16_0_1_1447236893190_13235">iv =00000000000000000000000000000000<br class="" id="yui_3_16_0_1_1447236893190_13237">[root@Con]# xxd -p ciphertext > ciphertextssd<br class="" id="yui_3_16_0_1_1447236893190_13239">[root@Con]# cat ciphertextssd<br class="" id="yui_3_16_0_1_1447236893190_13241">6d251e6944b051e04eaa6fb4dbf78465 <================== Correct Result<br class="" id="yui_3_16_0_1_1447236893190_13243">[root@Controller]# <br class="" id="yui_3_16_0_1_1447236893190_13245"><br class="" id="yui_3_16_0_1_1447236893190_13247">============================<br class="" id="yui_3_16_0_1_1447236893190_13249">In-Correct Results for CFB1<br class="" id="yui_3_16_0_1_1447236893190_13251">============================<br class="" id="yui_3_16_0_1_1447236893190_13253"><br class="" id="yui_3_16_0_1_1447236893190_13255">KEY = a2e2fa9baf7d20822ca9f0542f764a41<br class="" id="yui_3_16_0_1_1447236893190_13257">IV = 00000000000000000000000000000000<br class="" id="yui_3_16_0_1_1447236893190_13259">PLAINTEXT = 0<br class="" id="yui_3_16_0_1_1447236893190_13261">CIPHERTEXT = 1<br class="" id="yui_3_16_0_1_1447236893190_13263"><br class="" id="yui_3_16_0_1_1447236893190_13265">[root@Con]# echo 0 | xxd -r -p > plaintext<br class="" id="yui_3_16_0_1_1447236893190_13267">[root@Con]# <br class="" id="yui_3_16_0_1_1447236893190_13269">[root@Con]# openssl enc -aes-128-cfb1 -p -nopad -nosalt <br class="" id="yui_3_16_0_1_1447236893190_13271">-K a2e2fa9baf7d20822ca9f0542f764a41 -iv 00000000000000000000000000000000 -in pla<br class="" id="yui_3_16_0_1_1447236893190_13273">intext -out ciphertext<br class="" id="yui_3_16_0_1_1447236893190_13275">key=A2E2FA9BAF7D20822CA9F0542F764A41<br class="" id="yui_3_16_0_1_1447236893190_13277">iv =00000000000000000000000000000000<br class="" id="yui_3_16_0_1_1447236893190_13279">[root@Con]# xxd -p ciphertext > ciphertextssd<br class="" id="yui_3_16_0_1_1447236893190_13281">[root@Cont]# <br class="" id="yui_3_16_0_1_1447236893190_13283">[root@Con]# cat ciphertextssd<br class="" id="yui_3_16_0_1_1447236893190_13285">[root@Con]# <================== No Result whereas it should be 1</div><div id="yui_3_16_0_1_1447236893190_13351" dir="ltr"><br></div><div id="yui_3_16_0_1_1447236893190_13352" dir="ltr"><br></div><div id="yui_3_16_0_1_1447236893190_13353" dir="ltr">Thanks,</div><div id="yui_3_16_0_1_1447236893190_13372" dir="ltr">Haq<br></div></div></body></html>