Provided by: libzip-dev_1.5.1-0ubuntu1_amd64
zip_file_set_encryption — set encryption method for file in zip
#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_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. 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_set_default_password(3), zip_stat(3)
zip_file_set_encryption() was added in libzip 1.2.0.
Dieter Baron <email@example.com> and Thomas Klausner <firstname.lastname@example.org>