In preparation for writing a new engine that supports message digest and asymmetric crypto (sign and decrypt), I am trying to port the existing simple/demo engines from the Engine Corner examples (thanks, Richard!).
The fork of https://github.com/engine-corner/Lesson-2-A-digest.git that compiles and runs correctly (apparently) on OpenSSL-1.1.1 is https://github.com/mouse07410/Lesson-2-A-digest.git . But no matter what, I was unable to make either of these two repos to run successfully with OpenSSL-3.0 (master), even though the latter repo at least seems to compile correctly, and answers “Available”. Here’s what I’m getting (for both versions I built the sample “emd5”engine and copied to the appropriate subdir of the lib/; “openssl3” is an alias that points OPENSSL_CONF at the correct file, and invokes the correct OpenSSL-3.0 “openssl” binary, as it’s not on the main path): $ penssl version OpenSSL 1.1.1d 10 Sep 2019 $ openssl engine -t -c emd5 (emd5) A simple md5 engine for demonstration purposes [MD5] [ available ] $ echo "shoot" | openssl dgst -md5 -engine emd5 engine "emd5" set. (stdin)= 61a08703a6a4c774cad650afaedd9c10 $ echo "shoot" | openssl dgst -md5 (stdin)= 61a08703a6a4c774cad650afaedd9c10 $ $ openssl3 version OpenSSL 3.0.0-dev xx XXX xxxx (Library: OpenSSL 3.0.0-dev xx XXX xxxx) $ openssl3 engine -t -vv -c emd5 (emd5) A simple md5 engine for demonstration purposes [MD5] [ available ] $ echo "shoot" | openssl3 dgst -md5 MD5(stdin)= 61a08703a6a4c774cad650afaedd9c10 $ echo "shoot" | openssl3 dgst -md5 -engine emd5 engine "emd5" set. Error setting digest C0:05:98:0C:01:00:00:00:error:digital envelope routines:EVP_DigestInit_ex:initialization error:crypto/evp/digest.c:224: $ Something must be missing from the configuration/setup – but what…? Help would be greatly appreciated! Thanks! — Regards, Uri
