It seems to me that direct memory copying in crypto/evp/digest.c:
EVP_MD_CTX_copy_ex() may conflct with internal engine implementation.
IMHO it would be better to perform that direct memory copying only if
there is no engine digest->copy method implemented:
if (!out->digest->copy)
memcpy(out->md_data,in->md_data,out->digest->ctx_size);
Valery Blazhnov
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