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-=head1 NAME
-des_read_password, des_read_2passwords, des_read_pw_string, des_read_pw -
-Compatibility user interface functions
-=head1 SYNOPSIS
- #include <openssl/des_old.h>
- int des_read_password(DES_cblock *key,const char *prompt,int verify);
- int des_read_2passwords(DES_cblock *key1,DES_cblock *key2,
- const char *prompt,int verify);
- int des_read_pw_string(char *buf,int length,const char *prompt,int verify);
- int des_read_pw(char *buf,char *buff,int size,const char *prompt,int verify);
-The DES library contained a few routines to prompt for passwords. These
-aren't necessarely dependent on DES, and have therefore become part of the
-UI compatibility library.
-des_read_pw() writes the string specified by I<prompt> to standard output
-turns echo off and reads an input string from the terminal. The string is
-returned in I<buf>, which must have spac for at least I<size> bytes.
-If I<verify> is set, the user is asked for the password twice and unless
-the two copies match, an error is returned. The second password is stored
-in I<buff>, which must therefore also be at least I<size> bytes. A return
-code of -1 indicates a system error, 1 failure due to use interaction, and
-0 is success. All other functions described here use des_read_pw() to do
-the work.
-des_read_pw_string() is a variant of des_read_pw() that provides a buffer
-for you if I<verify> is set.
-des_read_password() calls des_read_pw() and converts the password to a
-DES key by calling DES_string_to_key(); des_read_2password() operates in
-the same way as des_read_password() except that it generates two keys
-by using the DES_string_to_2key() function.
-=head1 NOTES
-des_read_pw_string() is available in the MIT Kerberos library as well, and
-is also available under the name EVP_read_pw_string().
-=head1 SEE ALSO
-L<ui(3)|ui(3)>, L<ui_create(3)|ui_create(3)>
-=head1 AUTHOR
-Richard Levitte (richard@levitte.org) for the OpenSSL project