01-18-2010
InfoZIP's unzip has the -P parameter:
Quote:
-P password
use password to decrypt encrypted zipfile entries (if any). THIS IS INSECURE! Many multi-user operating systems provide ways for any user to see the current command line of any other user; even on stand-alone systems there is always the threat of over-the-shoulder peeking. Storing the plaintext password as part of a command line in an automated script is even worse. Whenever possible, use the non-echoing, interactive prompt to enter passwords. (And where security is truly important, use strong encryption such as Pretty Good Privacy instead of the relatively weak encryption provided by standard zipfile utilities.)
Check with the man page of your unzip to see if it offers a similar capability.
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LEARN ABOUT OSF1
dispcrypt
dispcrypt(3) Library Functions Manual dispcrypt(3)
NAME
dispcrypt - encrypt a password, dispatching based on the associated algorithm (Enhanced Security)
LIBRARY
Security Library (libsecurity.so)
In order to quickstart a program, the program must be linked as follows:
-lsecurity -ldb -laud -lm
See the shared library discussion in the Programmer's Guide for more information about using the quickstarting feature.
SYNOPSIS
#include <prot.h>
char *discprypt(
const char *plaintext,
const char *salt,
int algorithm_index);
PARAMETERS
plaintext The unencrypted password to be encrypted.
salt A string value which may be used as input to the selected encryption algorithm. This parameter should be at least two charac-
ters in length, and null-terminated. For password validation, it should be the encrypted password which is already in use.
algorithm_index
A value from 0 to (get_num_crypts()-1), indicating which encryption algorithm is to be used. For password validation, use the
fd_oldcrypt field of an es_passwd structure. For password generation, use the fd_newcrypt field (and update the fd_oldcrypt
field at the same time as the fd_encrypt field if the change is successful).
DESCRIPTION
The dispcrypt() function applies the specified encryption algorithm to the given password string and salt value, and returns the encrypted
form of the password. The return value is static data which is overwritten on subsequent calls to this function or to the encryption algo-
rithms which it calls, so callers should save a copy of the string unless the only use is an immediate comparison during password valida-
tion.
RETURN VALUES
This routine returns NULL if there is an encryption failure. Otherwise, it returns a pointer to static data, which is the null-terminated
encrypted password result.
RELATED INFORMATION
passwd(1), getespwent(3), get_num_crypts(3)
Security delim off
dispcrypt(3)