(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
openssl_pkcs7_verify — Verifies the signature of an S/MIME signed message
$input_filename
,$flags
,$signers_certificates_filename
= null
,$ca_info
= [],$untrusted_certificates_filename
= null
,$content
= null
,$output_filename
= null
openssl_pkcs7_verify() reads the S/MIME message contained in the given file and examines the digital signature.
input_filename
Path to the message.
flags
flags
can be used to affect how the signature is
verified - see PKCS7 constants
for more information.
signers_certificates_filename
If the signers_certificates_filename
is specified, it should be a
string holding the name of a file into which the certificates of the
persons that signed the messages will be stored in PEM format.
ca_info
If the ca_info
is specified, it should hold
information about the trusted CA certificates to use in the verification
process - see certificate
verification for more information about this parameter.
untrusted_certificates_filename
If the untrusted_certificates_filename
is specified, it is the filename
of a file containing a bunch of certificates to use as untrusted CAs.
content
You can specify a filename with content
that will
be filled with the verified data, but with the signature information
stripped.
output_filename
Returns true
if the signature is verified, false
if it is not correct
(the message has been tampered with, or the signing certificate is invalid),
or -1 on error.
Version | Description |
---|---|
8.0.0 |
signers_certificates_filename , untrusted_certificates_filename ,
content and output_filename are nullable now.
|
7.2.0 |
The output_filename parameter was added.
|
Note: As specified in RFC 2045, lines may not be longer than 76 characters in the
input_filename
parameter.