[#EVP_PKEY_CTX]
= EVP_PKEY_CTX
:mrdocs:

Opaque context for public‐key operations (sign, verify, encrypt, derive, keygen, and related controls).

== Synopsis

Declared in `<openssl/types.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef xref:evp_pkey_ctx_st.adoc[evp_pkey_ctx_st] EVP_PKEY_CTX;
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