(PHP 8)
openssl_cms_decrypt — Decrypt a CMS message
$input_filename,$output_filename,$certificate,$private_key = null,$encoding = OPENSSL_ENCODING_SMIMEDecrypts a CMS message.
input_filenameThe name of a file containing encrypted content.
output_filenameThe name of the file to deposit the decrypted content.
certificateThe name of the file containing a certificate of the recipient.
private_keyThe name of the file containing a PKCS#8 key.
encoding
The encoding of the input file. One of OPENSSL_ENCODING_SMIME,
OPENSSL_ENCODING_DER or OPENSSL_ENCODING_PEM.