Description

mixed openssl_pkcs7_verify (string filename, int flags [, string outfilename [, array cainfo [, string extracerts]]])

- openssl_pkcs7_verify() reads the S/MIME message

contained in the filename specified by filename and

examines the digital signature. It 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.

- flags can be used to affect how the signature is

verified - see PKCS7 constants

for more information.

- If the outfilename 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.

- If the cainfo 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.

- If the extracerts is specified, it is the filename

of a file containing a bunch of certificates to use as untrusted CAs.

openssl_pkcs7_sign

openssl_pkey_export_to_file 22222