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[net-next,2/5] net/tls: add CHACHA20-POLY1305 specific defines and structures

Message ID 1606010265-30471-3-git-send-email-vfedorenko@novek.ru
State New
Headers show
Series Add CHACHA20-POLY1305 cipher to Kernel TLS | expand

Commit Message

Vadim Fedorenko Nov. 22, 2020, 1:57 a.m. UTC
To provide support for ChaCha-Poly cipher we need to define
specific constants and structures.

Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
---
 include/net/tls.h        |  1 +
 include/uapi/linux/tls.h | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
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Patch

diff --git a/include/net/tls.h b/include/net/tls.h
index d04ce73..e4e9c2a 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -211,6 +211,7 @@  struct cipher_context {
 	union {
 		struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
 		struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
+		struct tls12_crypto_info_chacha20_poly1305 chacha20_poly1305;
 	};
 };
 
diff --git a/include/uapi/linux/tls.h b/include/uapi/linux/tls.h
index bcd2869..0d54bae 100644
--- a/include/uapi/linux/tls.h
+++ b/include/uapi/linux/tls.h
@@ -77,6 +77,13 @@ 
 #define TLS_CIPHER_AES_CCM_128_TAG_SIZE		16
 #define TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE		8
 
+#define TLS_CIPHER_CHACHA20_POLY1305			54
+#define TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE		12
+#define TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE	32
+#define TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE		0
+#define TLS_CIPHER_CHACHA20_POLY1305_TAG_SIZE	16
+#define TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE	8
+
 #define TLS_SET_RECORD_TYPE	1
 #define TLS_GET_RECORD_TYPE	2
 
@@ -109,6 +116,14 @@  struct tls12_crypto_info_aes_ccm_128 {
 	unsigned char rec_seq[TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE];
 };
 
+struct tls12_crypto_info_chacha20_poly1305 {
+	struct tls_crypto_info info;
+	unsigned char iv[TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE];
+	unsigned char key[TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE];
+	unsigned char salt[TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE];
+	unsigned char rec_seq[TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE];
+};
+
 enum {
 	TLS_INFO_UNSPEC,
 	TLS_INFO_VERSION,