PHP Manual: Perform signing operation on a binary data, return embedded signature(s)

stringfalse rnp_op_sign(
    RnpFFI $ffi,
    string $data,
    array $keys_fp,
    array $options = ?
)

ffi

The FFI object returned by rnp_ffi_create.

data

Data to be signed.

keys_fp

Array with key fingerprints. At least one key must be provided. Keys should be present in ffi.

options

An associative array with options.

Key	Data type	Description
`"compression_alg"`	string	Compression algorithm. Both `"compression_alg"` and `"compression_level"` must be set in order to enable data compression.
`"compression_level"`	integer	Compression level, 0-9. 0 disables compression.
`"armor"`	boolean	Enable ASCII-armored output. Disabled by default.
`"hash"`	string	Set hash algorithm used during signature calculation.
`"creation_time"`	integer	Set signature creation time in seconds since Jan, 1 1970 UTC. By default current time is used.
`"expiration_time"`	integer	Set signature expiration time in seconds since the creation time. 0 value is used to mark signature as non-expiring (default value).
`"file_name"`	string	Set input file name.Special value _CONSOLE may be used to mark message as 'for your eyes only', i.e. it should not be stored anywhere but only displayed to the receiver. Default is the empty string.
`"file_mtime"`	integer	Set input file modification date in seconds since Jan, 1 1970 UTC.

Data with embedded signature(s) on success or false on failure.