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aescbc: fix segfault on backspace

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R=rsc
CC=plan9port.codebot
http://codereview.appspot.com/5440107
This commit is contained in:
David du Colombier 2011-12-07 12:27:07 -05:00 committed by Russ Cox
parent aac05c4092
commit e80159c932
1 changed files with 5 additions and 2 deletions
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7
src/cmd/auth/secstore/aescbc.c
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@ -1,8 +1,9 @@
/* encrypt file by writing
/*
encrypt file by writing
v2hdr,
16byte initialization vector,
AES-CBC(key, random | file),
HMAC_SHA1(md5(key), AES-CBC(random | file))
HMAC_SHA1(md5(key), AES-CBC(random | file))
*/
#include <u.h>
#include <libc.h>
@ -91,6 +92,8 @@ main(int argc, char **argv)
buf[--n] = 0;
}else{
pass = readcons("aescbc password", nil, 1);
if(pass == nil)
exits("readcons");
n = strlen(pass);
if(n >= BUF)
exits("key too long");