ckolivas/lrzip
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Zero, unlock and free ram more strictly.

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This commit is contained in:
Con Kolivas 2011-03-16 12:38:10 +11:00
parent b302e6b9ad
commit 57944b1d5c
1 changed files with 16 additions and 4 deletions
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20
lrzip.c
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@ -483,8 +483,9 @@ retry_pass:
}
termios_p.c_lflag |= ECHO;
tcsetattr(fileno(stdin), 0, &termios_p);
free(testphrase);
memset(testphrase, 0, PASS_LEN);
munlock(testphrase, PASS_LEN);
free(testphrase);
memcpy(passphrase + PASS_LEN - SALT_LEN, control->salt, SALT_LEN);
sha4(passphrase, PASS_LEN, control->hash, 0);
@ -501,8 +502,15 @@ retry_pass:
control->hash_iv[j] = control->hash[j];
}
}
free(passphrase);
memset(control->hash + SALT_LEN, 0, HASH_LEN - SALT_LEN);
munlock(control->hash + SALT_LEN, HASH_LEN - SALT_LEN);
control->hash = realloc(control->hash, SALT_LEN);
if (unlikely(!control->hash))
fatal("Failed to realloc control->hash in get_hash\n");
memset(passphrase, 0, PASS_LEN);
munlock(passphrase, PASS_LEN);
free(passphrase);
}
/*
@ -668,9 +676,11 @@ void decompress_file(rzip_control *control)
}
if (ENCRYPT) {
memset(control->hash, 0, SALT_LEN);
memset(control->hash_iv, 0, SALT_LEN);
munlockall();
free(control->hash);
free(control->hash_iv);
munlockall();
}
free(control->outfile);
@ -1014,9 +1024,11 @@ void compress_file(rzip_control *control)
write_magic(control, fd_in, fd_out);
if (ENCRYPT) {
memset(control->hash, 0, SALT_LEN);
memset(control->hash_iv, 0, SALT_LEN);
munlockall();
free(control->hash);
free(control->hash_iv);
munlockall();
}
if (unlikely(close(fd_in)))