- (djm) OpenBSD CVS Sync

   - hshoexer@cvs.openbsd.org 2004/01/23 17:06:03
     [cipher.c]
     enable acss for ssh
     ok deraadt@ markus@
 - (djm) [acss.c acss.h cipher-acss.c] Portable support for ACSS
   if libcrypto lacks it

1 files changed, 84 insertions, 0 deletions

diff --git a/cipher-acss.c b/cipher-acss.c
new file mode 100644
index 00000000..e2e3a406
--- /dev/null
+++ b/cipher-acss.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2004 The OpenBSD project
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "includes.h"
+#include <openssl/evp.h>
+
+RCSID("$Id: cipher-acss.c,v 1.1 2004/01/27 10:19:22 djm Exp $");
+
+#if !defined(EVP_CTRL_SET_ACSS_MODE) && (OPENSSL_VERSION_NUMBER >= 0x00906000L)
+
+#include "acss.h"
+
+#define data(ctx) ((EVP_ACSS_KEY *)(ctx)->cipher_data)
+
+typedef struct {
+	ACSS_KEY ks;
+} EVP_ACSS_KEY;
+
+#define EVP_CTRL_SET_ACSS_MODE          0xff06
+#define EVP_CTRL_SET_ACSS_SUBKEY        0xff07
+
+static int
+acss_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 
+    const unsigned char *iv, int enc)
+{
+	acss_setkey(&data(ctx)->ks,key,enc,ACSS_DATA);
+	return 1;
+}
+
+static int
+acss_ciph(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, 
+    unsigned int inl)
+{
+	acss(&data(ctx)->ks,inl,in,out);
+	return 1;
+}
+
+static int
+acss_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+	switch(type) {
+	case EVP_CTRL_SET_ACSS_MODE:
+		data(ctx)->ks.mode = arg;
+		return 1;
+	case EVP_CTRL_SET_ACSS_SUBKEY:
+		acss_setsubkey(&data(ctx)->ks,(unsigned char *)ptr);
+		return 1;
+	default:
+		return -1;
+	}
+}
+
+const EVP_CIPHER *
+evp_acss(void)
+{
+	static EVP_CIPHER acss_cipher;
+
+	memset(&acss_cipher, 0, sizeof(EVP_CIPHER));
+
+	acss_cipher.nid = NID_undef;
+	acss_cipher.block_size = 1;
+	acss_cipher.key_len = 5;
+	acss_cipher.init = acss_init_key;
+	acss_cipher.do_cipher = acss_ciph;
+	acss_cipher.ctx_size = sizeof(EVP_ACSS_KEY);
+	acss_cipher.ctrl = acss_ctrl;
+
+	return (&acss_cipher);
+}
+#endif
+