1 files changed, 131 insertions, 0 deletions

diff --git a/src/lib/libcrypto/jpake/jpake.h b/src/lib/libcrypto/jpake/jpake.h
new file mode 100644
index 0000000000..fd143b4d9b
--- /dev/null
+++ b/src/lib/libcrypto/jpake/jpake.h
@@ -0,0 +1,131 @@
+/*
+ * Implement J-PAKE, as described in
+ * http://grouper.ieee.org/groups/1363/Research/contributions/hao-ryan-2008.pdf
+ * 
+ * With hints from http://www.cl.cam.ac.uk/~fh240/software/JPAKE2.java.
+ */
+
+#ifndef HEADER_JPAKE_H
+#define HEADER_JPAKE_H
+
+#include <openssl/opensslconf.h>
+
+#ifdef OPENSSL_NO_JPAKE
+#error JPAKE is disabled.
+#endif
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#include <openssl/bn.h>
+#include <openssl/sha.h>
+
+typedef struct JPAKE_CTX JPAKE_CTX;
+
+/* Note that "g" in the ZKPs is not necessarily the J-PAKE g. */
+typedef struct
+    {
+    BIGNUM *gr; /* g^r (r random) */
+    BIGNUM *b;  /* b = r - x*h, h=hash(g, g^r, g^x, name) */
+    } JPAKE_ZKP;
+
+typedef struct
+    {
+    BIGNUM *gx;       /* g^x in step 1, g^(xa + xc + xd) * xb * s in step 2 */
+    JPAKE_ZKP zkpx;   /* ZKP(x) or ZKP(xb * s) */
+    } JPAKE_STEP_PART;
+
+typedef struct
+    {
+    JPAKE_STEP_PART p1;   /* g^x3, ZKP(x3) or g^x1, ZKP(x1) */
+    JPAKE_STEP_PART p2;   /* g^x4, ZKP(x4) or g^x2, ZKP(x2) */
+    } JPAKE_STEP1;
+
+typedef JPAKE_STEP_PART JPAKE_STEP2;
+
+typedef struct
+    {
+    unsigned char hhk[SHA_DIGEST_LENGTH];
+    } JPAKE_STEP3A;
+
+typedef struct
+    {
+    unsigned char hk[SHA_DIGEST_LENGTH];
+    } JPAKE_STEP3B;
+
+/* Parameters are copied */
+JPAKE_CTX *JPAKE_CTX_new(const char *name, const char *peer_name,
+                         const BIGNUM *p, const BIGNUM *g, const BIGNUM *q,
+                         const BIGNUM *secret);
+void JPAKE_CTX_free(JPAKE_CTX *ctx);
+
+/*
+ * Note that JPAKE_STEP1 can be used multiple times before release
+ * without another init.
+ */
+void JPAKE_STEP1_init(JPAKE_STEP1 *s1);
+int JPAKE_STEP1_generate(JPAKE_STEP1 *send, JPAKE_CTX *ctx);
+int JPAKE_STEP1_process(JPAKE_CTX *ctx, const JPAKE_STEP1 *received);
+void JPAKE_STEP1_release(JPAKE_STEP1 *s1);
+
+/*
+ * Note that JPAKE_STEP2 can be used multiple times before release
+ * without another init.
+ */
+void JPAKE_STEP2_init(JPAKE_STEP2 *s2);
+int JPAKE_STEP2_generate(JPAKE_STEP2 *send, JPAKE_CTX *ctx);
+int JPAKE_STEP2_process(JPAKE_CTX *ctx, const JPAKE_STEP2 *received);
+void JPAKE_STEP2_release(JPAKE_STEP2 *s2);
+
+/*
+ * Optionally verify the shared key. If the shared secrets do not
+ * match, the two ends will disagree about the shared key, but
+ * otherwise the protocol will succeed.
+ */
+void JPAKE_STEP3A_init(JPAKE_STEP3A *s3a);
+int JPAKE_STEP3A_generate(JPAKE_STEP3A *send, JPAKE_CTX *ctx);
+int JPAKE_STEP3A_process(JPAKE_CTX *ctx, const JPAKE_STEP3A *received);
+void JPAKE_STEP3A_release(JPAKE_STEP3A *s3a);
+
+void JPAKE_STEP3B_init(JPAKE_STEP3B *s3b);
+int JPAKE_STEP3B_generate(JPAKE_STEP3B *send, JPAKE_CTX *ctx);
+int JPAKE_STEP3B_process(JPAKE_CTX *ctx, const JPAKE_STEP3B *received);
+void JPAKE_STEP3B_release(JPAKE_STEP3B *s3b);
+
+/*
+ * the return value belongs to the library and will be released when
+ * ctx is released, and will change when a new handshake is performed.
+ */
+const BIGNUM *JPAKE_get_shared_key(JPAKE_CTX *ctx);
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+void ERR_load_JPAKE_strings(void);
+
+/* Error codes for the JPAKE functions. */
+
+/* Function codes. */
+#define JPAKE_F_JPAKE_STEP1_PROCESS                      101
+#define JPAKE_F_JPAKE_STEP2_PROCESS                      102
+#define JPAKE_F_JPAKE_STEP3A_PROCESS                     103
+#define JPAKE_F_JPAKE_STEP3B_PROCESS                     104
+#define JPAKE_F_VERIFY_ZKP                               100
+
+/* Reason codes. */
+#define JPAKE_R_G_TO_THE_X3_IS_NOT_LEGAL                 108
+#define JPAKE_R_G_TO_THE_X4_IS_NOT_LEGAL                 109
+#define JPAKE_R_G_TO_THE_X4_IS_ONE                       105
+#define JPAKE_R_HASH_OF_HASH_OF_KEY_MISMATCH             106
+#define JPAKE_R_HASH_OF_KEY_MISMATCH                     107
+#define JPAKE_R_VERIFY_B_FAILED                          102
+#define JPAKE_R_VERIFY_X3_FAILED                         103
+#define JPAKE_R_VERIFY_X4_FAILED                         104
+#define JPAKE_R_ZKP_VERIFY_FAILED                        100
+
+#ifdef  __cplusplus
+}
+#endif
+#endif