freebsd-dev/crypto/bf/bf_cfb64.c
Enji Cooper e4520c8bd1 openssl: Vendor import of OpenSSL-3.0.8
Summary:

Release notes can be found at
https://www.openssl.org/news/openssl-3.0-notes.html .

Obtained from:  https://www.openssl.org/source/openssl-3.0.8.tar.gz
Differential Revision:	https://reviews.freebsd.org/D38835

Test Plan:
```
$ git status
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$ (cd ..; fetch http://www.openssl.org/source/openssl-${OSSLVER}.tar.gz http://www.openssl.org/source/openssl-${OSSLVER}.tar.gz.asc)
openssl-3.0.8.tar.gz                                    14 MB 4507 kBps    04s
openssl-3.0.8.tar.gz.asc                               833  B   10 MBps    00s
$ set | egrep '(XLIST|OSSLVER)='
OSSLVER=3.0.8
XLIST=FREEBSD-Xlist
$ gpg --list-keys
/home/ngie/.gnupg/pubring.kbx
-----------------------------
pub   rsa4096 2014-10-04 [SC]
      7953AC1FBC3DC8B3B292393ED5E9E43F7DF9EE8C
uid           [ unknown] Richard Levitte <richard@levitte.org>
uid           [ unknown] Richard Levitte <levitte@lp.se>
uid           [ unknown] Richard Levitte <levitte@openssl.org>
sub   rsa4096 2014-10-04 [E]

$ gpg --verify openssl-${OSSLVER}.tar.gz.asc openssl-${OSSLVER}.tar.gz
gpg: Signature made Tue Feb  7 05:43:55 2023 PST
gpg:                using RSA key 7953AC1FBC3DC8B3B292393ED5E9E43F7DF9EE8C
gpg: Good signature from "Richard Levitte <richard@levitte.org>" [unknown]
gpg:                 aka "Richard Levitte <levitte@lp.se>" [unknown]
gpg:                 aka "Richard Levitte <levitte@openssl.org>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 7953 AC1F BC3D C8B3 B292  393E D5E9 E43F 7DF9 EE8C
$ (cd vendor.checkout/; git status; find . -type f -or -type l | cut -c 3- | sort > ../old)
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$ tar -x -X $XLIST -f ../openssl-${OSSLVER}.tar.gz -C ..
$ rsync --exclude FREEBSD.* --delete -avzz ../openssl-${OSSLVER}/* .
$ cat .git
gitdir: /home/ngie/git/freebsd-src/.git/worktrees/vendor.checkout
$ diff -arq ../openssl-3.0.8  .
Only in .: .git
Only in .: FREEBSD-Xlist
Only in .: FREEBSD-upgrade
$ git status FREEBSD*
On branch vendor/openssl-3.0
nothing to commit, working tree clean
$
```

Reviewers: emaste, jkim

Subscribers: imp, andrew, dab

Differential Revision: https://reviews.freebsd.org/D38835
2023-03-06 12:41:29 -08:00

81 lines
2.2 KiB
C

/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* BF low level APIs are deprecated for public use, but still ok for internal
* use.
*/
#include "internal/deprecated.h"
#include <openssl/blowfish.h>
#include "bf_local.h"
/*
* The input and output encrypted as though 64bit cfb mode is being used.
* The extra state information to record how much of the 64bit block we have
* used is contained in *num;
*/
void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out,
long length, const BF_KEY *schedule,
unsigned char *ivec, int *num, int encrypt)
{
register BF_LONG v0, v1, t;
register int n = *num;
register long l = length;
BF_LONG ti[2];
unsigned char *iv, c, cc;
iv = (unsigned char *)ivec;
if (encrypt) {
while (l--) {
if (n == 0) {
n2l(iv, v0);
ti[0] = v0;
n2l(iv, v1);
ti[1] = v1;
BF_encrypt((BF_LONG *)ti, schedule);
iv = (unsigned char *)ivec;
t = ti[0];
l2n(t, iv);
t = ti[1];
l2n(t, iv);
iv = (unsigned char *)ivec;
}
c = *(in++) ^ iv[n];
*(out++) = c;
iv[n] = c;
n = (n + 1) & 0x07;
}
} else {
while (l--) {
if (n == 0) {
n2l(iv, v0);
ti[0] = v0;
n2l(iv, v1);
ti[1] = v1;
BF_encrypt((BF_LONG *)ti, schedule);
iv = (unsigned char *)ivec;
t = ti[0];
l2n(t, iv);
t = ti[1];
l2n(t, iv);
iv = (unsigned char *)ivec;
}
cc = *(in++);
c = iv[n];
iv[n] = cc;
*(out++) = c ^ cc;
n = (n + 1) & 0x07;
}
}
v0 = v1 = ti[0] = ti[1] = t = c = cc = 0;
*num = n;
}