OSSL_CRMF_ENCRYPTEDKEY_get1_pkey
pkey = OSSL_CRMF_ENCRYPTEDKEY_get1_pkey(encr_key, ctx->trusted,
EVP_PKEY *OSSL_CRMF_ENCRYPTEDKEY_get1_pkey(const OSSL_CRMF_ENCRYPTEDKEY *encryptedKey,