(PECL rnp >= 0.1.1)
rnp_ffi_create — Create the top-level object used for interacting with the library
pub_format
the format of the public keyring, RNP_KEYSTORE_GPG or other RNP_KEYSTORE_* constant.
sec_format
the format of the secret keyring, RNP_KEYSTORE_GPG or other RNP_KEYSTORE_* constant
Returns RnpFFI object on success 或者在失败时返回 false
.