Module params 

OSSL_PARAM_BLD builder and Params<'a> wrapper.

ParamBuilder wraps OSSL_PARAM_BLD and provides typed push methods that map Rust types to OpenSSL parameter types. build() finalises the builder and returns an owned Params array.

Lifetime

ParamBuilder<'a> carries a lifetime 'a that covers any borrowed byte slices passed via push_octet_ptr or push_utf8_ptr. Those calls store a pointer into the caller’s buffer; the buffer must outlive the Params returned by build(). Calls that copy (push_octet_slice, push_utf8_string) have no such constraint.

Zero-copy decision table

Method	C function	Copies?
push_octet_slice	OSSL_PARAM_BLD_push_octet_string	Yes
push_octet_ptr	OSSL_PARAM_BLD_push_octet_ptr	No
push_utf8_string	OSSL_PARAM_BLD_push_utf8_string	Yes
push_utf8_ptr	(manual OSSL_PARAM_BLD extension)	No

Structs

ParamBuilder

Builder for OSSL_PARAM arrays.

Params

An owned, finalized OSSL_PARAM array.