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Support libcrypto for hmac and sha256 #223

Merged
merged 2 commits into from Sep 25, 2023
Merged

Support libcrypto for hmac and sha256 #223

merged 2 commits into from Sep 25, 2023
+447 −35

Commits on Aug 9, 2023

  1. compat: Add OpenSSL libcrypto compatibility layer 

    Detect libcrypto in configure script.  Only fall back
to using libcrypto when /usr libs are allowed and no
other compatible implementation is available or when
--with-openssl is passed explicitly.
Make sure libcrypto and libmd are never linked at the
same time.

Add OpenSSL based SHA256 and HMAC compat shims in
compat/crypt_openssl. Depeding on version and build flags,
libcrypto ships with a compatible SHA256 API in
"openssl/sha.h".  OpenSSL 3 has deprecated the SHA API,
so if it is not detected we fall back to an EVP_DIGEST
based version.
Because the API might still be in use in OpenSSL internally,
the compatibility wrappers have a dhcpcd_ prefix to avoid
symbol conflicts.
    @tobhe
    tobhe committed Aug 9, 2023
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  2. Add sha256 tests based on the existing hmac-md5 tests.

    @tobhe
    tobhe committed Aug 9, 2023
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