zip_file_set_encryption
NAME
zip_file_set_encryption —
set encryption method for file in zip
LIBRARY
libzip (-lzip)SYNOPSIS
#include <zip.h>
int
zip_file_set_encryption(zip_t
*archive, zip_uint64_t
index, zip_uint16_t
method, const char
*password);
DESCRIPTION
Thezip_file_set_encryption() function sets the
encryption method for the file at position index in the
zip archive to method using the password
password. The method is the same
as returned by zip_stat(3). For the
method argument, currently only the following values are
supported:
ZIP_EM_NONE- No encryption.
ZIP_EM_AES_128- Winzip AES-128 encryption.
ZIP_EM_AES_192- Winzip AES-192 encryption.
ZIP_EM_AES_256- Winzip AES-256 encryption.
ZIP_EM_TRAD_PKWARE- Traditional PKWare encryption. Do not use this method, it is not secure. It is only provided for backwards compatibility.
If password is NULL,
the default password provided by
zip_set_default_password(3)
is used.
The current encryption method for a file in a zip archive can be determined using zip_stat(3).
RETURN VALUES
Upon successful completion 0 is returned. Otherwise, -1 is returned and the error information in archive is set to indicate the error.ERRORS
zip_file_set_encryption() fails if:
- [
ZIP_ER_ENCRNOTSUPP] - Unsupported compression method requested.
- [
ZIP_ER_INVAL] - index is not a valid file index in archive, or the argument combination is invalid.
- [
ZIP_ER_MEMORY] - Required memory could not be allocated.
- [
ZIP_ER_RDONLY] - Read-only zip file, no changes allowed.
SEE ALSO
libzip(3), zip_encryption_method_supported(3), zip_fopen_encrypted(3), zip_fopen_index_encrypted(3), zip_set_default_password(3), zip_stat(3)HISTORY
zip_file_set_encryption() was added in libzip 1.2.0.