third_party/libzip/src/man/zip_file_set_encryption.html
| ZIP_FILE_SET_ENCRYPTION(3) | Library Functions Manual | ZIP_FILE_SET_ENCRYPTION(3) |
zip_file_set_encryption —
set encryption method for file in zip
libzip (-lzip)
#include <zip.h>
int
zip_file_set_encryption(zip_t *archive, zip_uint64_t index, zip_uint16_t method, const char *password);
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_NONENo encryption.ZIP_EM_AES_128Winzip AES-128 encryption.ZIP_EM_AES_192Winzip AES-192 encryption.ZIP_EM_AES_256Winzip AES-256 encryption.ZIP_EM_TRAD_PKWARETraditional 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).
Upon successful completion 0 is returned. Otherwise, -1 is returned and the error information in archive is set to indicate the error.
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.
libzip(3), zip_encryption_method_supported(3), zip_fopen_encrypted(3), zip_fopen_index_encrypted(3), zip_set_default_password(3), zip_stat(3)
zip_file_set_encryption() was added in libzip 1.2.0.
Dieter Baron <[email protected]> and Thomas Klausner <[email protected]>
| April 2, 2020 | NiH |