ZIP_FILE_SET_ENCRYPTI... BSD Library Functions Manual ZIP_FILE_SET_ENCRYPTI...
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
The zip_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 deter-
mined 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 ar-
gument 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.
AUTHORS
Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
BSD April 2, 2020 BSD
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