(PHP 8)
openssl_cms_encrypt — Encrypt a CMS message
$input_filename,$output_filename,$certificate,$headers,$flags = 0,$encoding = OPENSSL_ENCODING_SMIME,$cipher_algo = OPENSSL_CIPHER_RC2_40This function encrypts content to one or more recipients, based on the certificates that are passed to it.
input_filenameThe file to be encrypted.
output_filenameThe output file.
certificateRecipients to encrypt to.
headersHeaders to include when S/MIME is used.
flagsFlags to be passed to CMS_sign.
encoding
      An encoding to output. One of OPENSSL_CMS_SMIME,
      OPENSLL_CMS_DER or OPENSSL_CMS_PEM.
     
cipher_algoA cypher to use.
   成功时返回 true, 或者在失败时返回 false。