[#PKCS7_encrypt_ex]
= PKCS7_encrypt_ex
:mrdocs:

Create a PKCS#7 envelopedData encrypting `in` for each recipient in `certs.`

== Synopsis

Declared in `<openssl/pkcs7.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:PKCS7.adoc[PKCS7]*
PKCS7_encrypt_ex(
    xref:stack_st_X509.adoc[stack_st_X509]* certs,
    xref:BIO.adoc[BIO]* in,
    xref:EVP_CIPHER-07.adoc[EVP_CIPHER] const* cipher,
    int flags,
    xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]* libctx,
    char const* propq);
----

== Return Value

New PKCS7 envelopedData object, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *certs*
| Recipient certificates whose public keys encrypt the content‐encryption key.
| *in*
| BIO supplying the plaintext content.
| *cipher*
| Content‐encryption cipher (for example AES‐256‐CBC).
| *flags*
| PKCS7_* encryption flags.
| *libctx*
| Library context for algorithm fetches, or NULL for the default.
| *propq*
| Property query for algorithm fetches, or NULL.
|===


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