init attribute-based encryption

Change-Id: Iba1a3d722110abf747a0fba366f3ebc911d25b25

1 files changed, 177 insertions, 0 deletions

diff --git a/moon-abe/libbswabe-0.9/bswabe.h b/moon-abe/libbswabe-0.9/bswabe.h
new file mode 100644
index 00000000..5213154d
--- /dev/null
+++ b/moon-abe/libbswabe-0.9/bswabe.h
@@ -0,0 +1,177 @@
+/*
+  Include glib.h and pbc.h before including this file. Note that this
+  file should be included at most once.
+*/
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+/*
+  A public key.
+*/
+typedef struct bswabe_pub_s bswabe_pub_t;
+
+/*
+  A master secret key.
+*/
+typedef struct bswabe_msk_s bswabe_msk_t;
+
+/*
+  A private key.
+*/
+typedef struct bswabe_prv_s bswabe_prv_t;
+
+/*
+  A ciphertext. Note that this library only handles encrypting a
+  single group element, so if you want to encrypt something bigger,
+  you will have to use that group element as a symmetric key for
+  hybrid encryption (which you do yourself).
+*/
+typedef struct bswabe_cph_s bswabe_cph_t;
+
+
+/*
+A searchable encryption word. Contains two elements: [g^r,t]
+g in G_1 and t = e(H_1(W),h^r) in G_t
+*/
+typedef struct peks_sew_s peks_sew_t;
+
+
+/*
+A trapdoor for a word. T_W = H_1(W)^a in G_1
+*/
+typedef struct peks_trap_s peks_trap_t;
+
+/*
+  An index.
+*/
+typedef struct peks_ind_s peks_ind_t;
+
+
+/*
+  Generate a public key and corresponding master secret key, and
+  assign the *pub and *msk pointers to them. The space used may be
+  later freed by calling bswabe_pub_free(*pub) and
+  bswabe_msk_free(*msk).
+*/
+void bswabe_setup( bswabe_pub_t** pub, bswabe_msk_t** msk );
+
+/*
+  Generate a private key with the given set of attributes. The final
+  argument should be a null terminated array of pointers to strings,
+  one for each attribute.
+*/
+bswabe_prv_t* bswabe_keygen( bswabe_pub_t* pub,
+                             bswabe_msk_t* msk,
+                             char** attributes );
+
+/*
+  Pick a random group element and encrypt it under the specified
+  access policy. The resulting ciphertext is returned and the
+  element_t given as an argument (which need not be initialized) is
+  set to the random group element.
+
+  After using this function, it is normal to extract the random data
+  in m using the pbc functions element_length_in_bytes and
+  element_to_bytes and use it as a key for hybrid encryption.
+
+  The policy is specified as a simple string which encodes a postorder
+  traversal of threshold tree defining the access policy. As an
+  example,
+
+    "foo bar fim 2of3 baf 1of2"
+
+  specifies a policy with two threshold gates and four leaves. It is
+  not possible to specify an attribute with whitespace in it (although
+  "_" is allowed).
+
+  Numerical attributes and any other fancy stuff are not supported.
+
+  Returns null if an error occured, in which case a description can be
+  retrieved by calling bswabe_error().
+*/
+bswabe_cph_t* bswabe_enc( bswabe_pub_t* pub, element_t m, char* policy );
+
+/*
+  Decrypt the specified ciphertext using the given private key,
+  filling in the provided element m (which need not be initialized)
+  with the result.
+
+  Returns true if decryption succeeded, false if this key does not
+  satisfy the policy of the ciphertext (in which case m is unaltered).
+*/
+int bswabe_dec( bswabe_pub_t* pub, bswabe_prv_t* prv,
+                bswabe_cph_t* cph, element_t m );
+
+/* Returns the policy of a ciphertext*/
+char* bswabe_policyList( bswabe_cph_t* cph);
+
+/* Returns the list of attributes of a privaate key*/
+char** bswabe_attrList( bswabe_prv_t* prv);
+
+
+/*
+Generates a searchable encrypted word
+*/
+peks_sew_t peks_enc( bswabe_pub_t* pub, char* w );
+
+/*
+Generates a trapdoor corresponding to the word w
+*/
+peks_trap_t* peks_trap( bswabe_pub_t* pub, bswabe_msk_t* msk, char* w );
+
+/*
+Test if the encrypted word correspond to the word represented by the trapdoor
+*/
+int peks_test( bswabe_pub_t* pub, peks_sew_t sew, peks_trap_t* trap );
+
+/* Generates an encrypted index using the public key and a clear index.
+   Each keyword of the clear index should be on a different line  */
+peks_ind_t* peks_enc_ind( bswabe_pub_t* pub, char* ind_file );
+
+/* Tests if the encrypted index match with the trapdoor  */
+int peks_test_ind( bswabe_pub_t* pub, peks_ind_t* ind, peks_trap_t* trap );
+
+/*
+  Exactly what it seems.
+*/
+GByteArray* bswabe_pub_serialize( bswabe_pub_t* pub );
+GByteArray* bswabe_msk_serialize( bswabe_msk_t* msk );
+GByteArray* bswabe_prv_serialize( bswabe_prv_t* prv );
+GByteArray* bswabe_cph_serialize( bswabe_cph_t* cph );
+GByteArray* peks_sew_serialize( peks_sew_t* sew );
+GByteArray* peks_ind_serialize( peks_ind_t* ind );
+GByteArray* peks_trap_serialize( peks_trap_t* trap );
+
+/*
+  Also exactly what it seems. If free is true, the GByteArray passed
+  in will be free'd after it is read.
+*/
+bswabe_pub_t* bswabe_pub_unserialize( GByteArray* b, int free );
+bswabe_msk_t* bswabe_msk_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+bswabe_prv_t* bswabe_prv_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+bswabe_cph_t* bswabe_cph_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+peks_sew_t* peks_sew_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+peks_ind_t* peks_ind_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+peks_trap_t* peks_trap_unserialize( bswabe_pub_t* pub, GByteArray* b, int free );
+
+
+/*
+  Again, exactly what it seems.
+*/
+void bswabe_pub_free( bswabe_pub_t* pub );
+void bswabe_msk_free( bswabe_msk_t* msk );
+void bswabe_prv_free( bswabe_prv_t* prv );
+void bswabe_cph_free( bswabe_cph_t* cph );
+
+/*
+  Return a description of the last error that occured. Call this after
+  bswabe_enc or bswabe_dec returns 0. The returned string does not
+  need to be free'd.
+*/
+char* bswabe_error();
+
+#if defined (__cplusplus)
+} // extern "C"
+#endif