Hook up Chacha20-Poly1305 to the OpenBSD Cryptographic Framework

ok naddy, jsing

3 files changed, 33 insertions, 6 deletions

diff --git a/sys/crypto/cryptodev.h b/sys/crypto/cryptodev.h
index f4af569b728..7e7dd4c1352 100644
--- a/sys/crypto/cryptodev.h
+++ b/sys/crypto/cryptodev.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cryptodev.h,v 1.60 2014/12/28 10:02:37 tedu Exp $	*/
+/*	$OpenBSD: cryptodev.h,v 1.61 2015/11/03 01:31:36 mikeb Exp $	*/
 
 /*
  * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
@@ -77,7 +77,8 @@
 #define BLOWFISH_BLOCK_LEN	8
 #define CAST128_BLOCK_LEN	8
 #define RIJNDAEL128_BLOCK_LEN	16
-#define EALG_MAX_BLOCK_LEN	16 /* Keep this updated */
+#define CHACHA20_BLOCK_LEN	64
+#define EALG_MAX_BLOCK_LEN	64 /* Keep this updated */
 
 /* Maximum hash algorithm result length */
 #define AALG_MAX_RESULT_LEN	64 /* Keep this updated */
@@ -107,8 +108,10 @@
 #define CRYPTO_AES_192_GMAC	25
 #define CRYPTO_AES_256_GMAC	26
 #define CRYPTO_AES_GMAC		27
-#define CRYPTO_ESN		28 /* Support for Extended Sequence Numbers */
-#define CRYPTO_ALGORITHM_MAX	28 /* Keep updated */
+#define CRYPTO_CHACHA20_POLY1305	28
+#define CRYPTO_CHACHA20_POLY1305_MAC	29
+#define CRYPTO_ESN		30 /* Support for Extended Sequence Numbers */
+#define CRYPTO_ALGORITHM_MAX	30 /* Keep updated */
 
 /* Algorithm flags */
 #define	CRYPTO_ALG_FLAG_SUPPORTED	0x01 /* Algorithm is supported */
diff --git a/sys/crypto/xform.c b/sys/crypto/xform.c
index aaf6f29ea3f..27b30689475 100644
--- a/sys/crypto/xform.c
+++ b/sys/crypto/xform.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: xform.c,v 1.47 2015/10/27 12:00:25 mikeb Exp $	*/
+/*	$OpenBSD: xform.c,v 1.48 2015/11/03 01:31:36 mikeb Exp $	*/
 /*
  * The authors of this code are John Ioannidis (ji@tla.org),
  * Angelos D. Keromytis (kermit@csd.uch.gr),
@@ -58,6 +58,7 @@
 #include <crypto/cryptodev.h>
 #include <crypto/xform.h>
 #include <crypto/gmac.h>
+#include <crypto/chachapoly.h>
 
 extern void des_ecb3_encrypt(caddr_t, caddr_t, caddr_t, caddr_t, caddr_t, int);
 extern void des_ecb_encrypt(caddr_t, caddr_t, caddr_t, int);
@@ -216,6 +217,16 @@ struct enc_xform enc_xform_aes_xts = {
 	aes_xts_reinit
 };
 
+struct enc_xform enc_xform_chacha20_poly1305 = {
+	CRYPTO_CHACHA20_POLY1305, "CHACHA20-POLY1305",
+	1, 8, 32+4, 32+4,
+	sizeof(struct chacha20_ctx),
+	chacha20_crypt,
+	chacha20_crypt,
+	chacha20_setkey,
+	chacha20_reinit
+};
+
 struct enc_xform enc_xform_arc4 = {
 	CRYPTO_ARC4, "ARC4",
 	1, 1, 1, 32, 0,
@@ -313,6 +324,17 @@ struct auth_hash auth_hash_gmac_aes_256 = {
 	(void (*)(u_int8_t *, void *)) AES_GMAC_Final
 };
 
+struct auth_hash auth_hash_chacha20_poly1305 = {
+	CRYPTO_CHACHA20_POLY1305_MAC, "CHACHA20-POLY1305",
+	CHACHA20_KEYSIZE+CHACHA20_SALT, POLY1305_BLOCK_LEN, POLY1305_TAGLEN,
+	sizeof(CHACHA20_POLY1305_CTX), CHACHA20_BLOCK_LEN,
+	(void (*)(void *))Chacha20_Poly1305_Init,
+	(void (*)(void *, const u_int8_t *, u_int16_t))Chacha20_Poly1305_Setkey,
+	(void (*)(void *, const u_int8_t *, u_int16_t))Chacha20_Poly1305_Reinit,
+	(int  (*)(void *, const u_int8_t *, u_int16_t))Chacha20_Poly1305_Update,
+	(void (*)(u_int8_t *, void *))Chacha20_Poly1305_Final
+};
+
 struct auth_hash auth_hash_md5 = {
 	CRYPTO_MD5, "MD5",
 	0, 16, 16, sizeof(MD5_CTX), 0,
diff --git a/sys/crypto/xform.h b/sys/crypto/xform.h
index 0e7678c49af..baa18a07b51 100644
--- a/sys/crypto/xform.h
+++ b/sys/crypto/xform.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: xform.h,v 1.24 2014/12/28 10:02:37 tedu Exp $	*/
+/*	$OpenBSD: xform.h,v 1.25 2015/11/03 01:31:36 mikeb Exp $	*/
 
 /*
  * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
@@ -85,6 +85,7 @@ extern struct enc_xform enc_xform_aes_ctr;
 extern struct enc_xform enc_xform_aes_gcm;
 extern struct enc_xform enc_xform_aes_gmac;
 extern struct enc_xform enc_xform_aes_xts;
+extern struct enc_xform enc_xform_chacha20_poly1305;
 extern struct enc_xform enc_xform_arc4;
 extern struct enc_xform enc_xform_null;
 
@@ -99,6 +100,7 @@ extern struct auth_hash auth_hash_hmac_sha2_512_256;
 extern struct auth_hash auth_hash_gmac_aes_128;
 extern struct auth_hash auth_hash_gmac_aes_192;
 extern struct auth_hash auth_hash_gmac_aes_256;
+extern struct auth_hash auth_hash_chacha20_poly1305;
 
 extern struct comp_algo comp_algo_deflate;
 extern struct comp_algo comp_algo_lzs;