X-Git-Url: http://www.project-moonshot.org/gitweb/?p=mech_eap.git;a=blobdiff_plain;f=libeap%2Fsrc%2Fcommon%2Fsae.h;fp=libeap%2Fsrc%2Fcommon%2Fsae.h;h=a4270bc22d14a015d440795cf3c636db950cc8c5;hp=0000000000000000000000000000000000000000;hb=f3746d009c6d7f50025af1f58a85e5fee9680be6;hpb=244f18d04aaf29e68495b5ffeb40ef5cca50942f

diff --git a/libeap/src/common/sae.h b/libeap/src/common/sae.h
new file mode 100644
index 0000000..a4270bc
--- /dev/null
+++ b/libeap/src/common/sae.h
@@ -0,0 +1,71 @@
+/*
+ * Simultaneous authentication of equals
+ * Copyright (c) 2012-2013, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef SAE_H
+#define SAE_H
+
+#define SAE_KCK_LEN 32
+#define SAE_PMK_LEN 32
+#define SAE_PMKID_LEN 16
+#define SAE_KEYSEED_KEY_LEN 32
+#define SAE_MAX_PRIME_LEN 512
+#define SAE_MAX_ECC_PRIME_LEN 66
+#define SAE_COMMIT_MAX_LEN (2 + 3 * SAE_MAX_PRIME_LEN)
+#define SAE_CONFIRM_MAX_LEN (2 + SAE_MAX_PRIME_LEN)
+
+/* Special value returned by sae_parse_commit() */
+#define SAE_SILENTLY_DISCARD 65535
+
+struct sae_temporary_data {
+	u8 kck[SAE_KCK_LEN];
+	struct crypto_bignum *own_commit_scalar;
+	struct crypto_bignum *own_commit_element_ffc;
+	struct crypto_ec_point *own_commit_element_ecc;
+	struct crypto_bignum *peer_commit_element_ffc;
+	struct crypto_ec_point *peer_commit_element_ecc;
+	struct crypto_ec_point *pwe_ecc;
+	struct crypto_bignum *pwe_ffc;
+	struct crypto_bignum *sae_rand;
+	struct crypto_ec *ec;
+	int prime_len;
+	const struct dh_group *dh;
+	const struct crypto_bignum *prime;
+	const struct crypto_bignum *order;
+	struct crypto_bignum *prime_buf;
+	struct crypto_bignum *order_buf;
+	struct wpabuf *anti_clogging_token;
+};
+
+struct sae_data {
+	enum { SAE_NOTHING, SAE_COMMITTED, SAE_CONFIRMED, SAE_ACCEPTED } state;
+	u16 send_confirm;
+	u8 pmk[SAE_PMK_LEN];
+	u8 pmkid[SAE_PMKID_LEN];
+	struct crypto_bignum *peer_commit_scalar;
+	int group;
+	int sync;
+	struct sae_temporary_data *tmp;
+};
+
+int sae_set_group(struct sae_data *sae, int group);
+void sae_clear_temp_data(struct sae_data *sae);
+void sae_clear_data(struct sae_data *sae);
+
+int sae_prepare_commit(const u8 *addr1, const u8 *addr2,
+		       const u8 *password, size_t password_len,
+		       struct sae_data *sae);
+int sae_process_commit(struct sae_data *sae);
+void sae_write_commit(struct sae_data *sae, struct wpabuf *buf,
+		      const struct wpabuf *token);
+u16 sae_parse_commit(struct sae_data *sae, const u8 *data, size_t len,
+		     const u8 **token, size_t *token_len, int *allowed_groups);
+void sae_write_confirm(struct sae_data *sae, struct wpabuf *buf);
+int sae_check_confirm(struct sae_data *sae, const u8 *data, size_t len);
+u16 sae_group_allowed(struct sae_data *sae, int *allowed_groups, u16 group);
+
+#endif /* SAE_H */