Re: OpenSSL and Crypt::CBC don't give the same cipher text

[Anonymous Monk]

$iv = pack("h*", $iv);
$fixed_key = pack("h*", $fixed_key);

Is that correct? How does openssl interpret iv and key strings? Note that "With format "h", the first character of the pair determines the least-significant nybble of the output character"

$ perl -E 'say ord pack "h*", "01"'
16  # that is, 0x10

$ perl -E 'say ord pack "H*", "01"'
1

[LonelyPilgrim]

Thanks. This was indeed the problem. I realized it myself around the same time you posted your comment.