From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 9 Nov 2018 15:35:14 +0000 (+0000)
Subject: algorithms.c, etc.: Support the new AEAD abstraction.
X-Git-Url: https://git.distorted.org.uk/~mdw/pyke/commitdiff_plain/54ae5879b39214704112ecfebd410a9ea57b6e6c

algorithms.c, etc.: Support the new AEAD abstraction.

The new machinery means we can reimplement `secret_box' and
`secret_unbox' using Catacomb's `..._naclbox' AE scheme.
---

diff --git a/catacomb-python.h b/catacomb-python.h
index d68026d..df29099 100644
--- a/catacomb-python.h
+++ b/catacomb-python.h
@@ -61,6 +61,7 @@
 #include <catacomb/blkc.h>
 
 #include <catacomb/gcipher.h>
+#include <catacomb/gaead.h>
 #include <catacomb/ghash.h>
 #include <catacomb/gmac.h>
 #include <catacomb/md5.h>
@@ -517,6 +518,116 @@ extern PyTypeObject *gcipher_pytype;
 extern PyObject *gcipher_pywrap(PyObject *, gcipher *);
 extern int convgcipher(PyObject *, void *);
 
+typedef struct gcaead_pyobj {
+  PyHeapTypeObject ty;
+  gcaead *aec;
+  struct gcaeadaad_pyobj *aad;
+  struct gcaeadenc_pyobj *enc;
+  struct gcaeaddec_pyobj *dec;
+} gcaead_pyobj;
+
+extern PyTypeObject *gcaead_pytype;
+#define GCAEAD_PYCHECK(o) PyObject_TypeCheck((o), gcaead_pytype)
+#define GCAEAD_AEC(o) (((gcaead_pyobj *)(o))->aec)
+#define GCAEAD_AAD(o) (((gcaead_pyobj *)(o))->aad)
+#define GCAEAD_ENC(o) (((gcaead_pyobj *)(o))->enc)
+#define GCAEAD_DEC(o) (((gcaead_pyobj *)(o))->dec)
+extern PyObject *gcaead_pywrap(gcaead *);
+extern int convgcaead(PyObject *, void *);
+
+typedef struct gaeadkey_pyobj {
+  PyObject_HEAD
+  gaead_key *k;
+} gaeadkey_pyobj;
+
+extern PyTypeObject *gaeadkey_pytype;
+#define GAEADKEY_PYCHECK(o) PyObject_TypeCheck((o), gaeadkey_pytype)
+#define GAEADKEY_K(o) (((gaeadkey_pyobj *)(o))->k)
+extern PyObject *gaeadkey_pywrap(PyObject *, gaead_key *);
+extern int convgaeadkey(PyObject *, void *);
+
+typedef struct gcaeadaad_pyobj {
+  PyHeapTypeObject ty;
+  gcaead_pyobj *key;
+} gcaeadaad_pyobj;
+#define GCAEADAAD_KEY(o) (((gcaeadaad_pyobj *)(o))->key)
+extern PyTypeObject *gcaeadaad_pytype;
+
+typedef struct gaeadaad_pyobj {
+  PyObject_HEAD
+  gaead_aad *a;
+  unsigned f;
+#define AEADF_DEAD 32768u
+  size_t hsz, hlen;
+} gaeadaad_pyobj;
+
+extern PyTypeObject *gaeadaad_pytype;
+#define GAEADAAD_PYCHECK(o) PyObject_TypeCheck((o), gaeadaad_pytype)
+#define GAEADAAD_A(o) (((gaeadaad_pyobj *)(o))->a)
+#define GAEADAAD_F(o) (((gaeadaad_pyobj *)(o))->f)
+#define GAEADAAD_HSZ(o) (((gaeadaad_pyobj *)(o))->hsz)
+#define GAEADAAD_HLEN(o) (((gaeadaad_pyobj *)(o))->hlen)
+extern PyObject *gaeadaad_pywrap(PyObject *, gaead_aad *, unsigned, size_t);
+extern int convgaeadaad(PyObject *, void *);
+
+typedef struct gcaeadenc_pyobj {
+  PyHeapTypeObject ty;
+  gcaead_pyobj *key;
+} gcaeadenc_pyobj;
+#define GCAEADENC_KEY(o) (((gcaeadenc_pyobj *)(o))->key)
+extern PyTypeObject *gcaeadenc_pytype;
+
+typedef struct gaeadenc_pyobj {
+  PyObject_HEAD
+  gaead_enc *e;
+  gaeadaad_pyobj *aad;
+  unsigned f;
+  size_t hsz, msz, tsz;
+  size_t mlen;
+} gaeadenc_pyobj;
+
+extern PyTypeObject *gaeadenc_pytype;
+#define GAEADENC_PYCHECK(o) PyObject_TypeCheck((o), gaeadenc_pytype)
+#define GAEADENC_AAD(o) (((gaeadenc_pyobj *)(o))->aad)
+#define GAEADENC_E(o) (((gaeadenc_pyobj *)(o))->e)
+#define GAEADENC_F(o) (((gaeadenc_pyobj *)(o))->f)
+#define GAEADENC_HSZ(o) (((gaeadenc_pyobj *)(o))->hsz)
+#define GAEADENC_MSZ(o) (((gaeadenc_pyobj *)(o))->msz)
+#define GAEADENC_TSZ(o) (((gaeadenc_pyobj *)(o))->tsz)
+#define GAEADENC_MLEN(o) (((gaeadenc_pyobj *)(o))->mlen)
+extern PyObject *gaeadenc_pywrap(PyObject *, gaead_enc *, unsigned,
+				 size_t, size_t, size_t);
+extern int convgaeadenc(PyObject *, void *);
+
+typedef struct gcaeaddec_pyobj {
+  PyHeapTypeObject ty;
+  gcaead_pyobj *key;
+} gcaeaddec_pyobj;
+#define GCAEADDEC_KEY(o) (((gcaeaddec_pyobj *)(o))->key)
+extern PyTypeObject *gcaeaddec_pytype;
+
+typedef struct gaeaddec_pyobj {
+  PyObject_HEAD
+  gaead_dec *d;
+  gaeadaad_pyobj *aad;
+  unsigned f;
+  size_t hsz, csz, tsz;
+  size_t clen;
+} gaeaddec_pyobj;
+
+extern PyTypeObject *gaeaddec_pytype;
+#define GAEADDEC_PYCHECK(o) PyObject_TypeCheck((o), gaeaddec_pytype)
+#define GAEADDEC_AAD(o) (((gaeaddec_pyobj *)(o))->aad)
+#define GAEADDEC_D(o) (((gaeaddec_pyobj *)(o))->d)
+#define GAEADDEC_F(o) (((gaeaddec_pyobj *)(o))->f)
+#define GAEADDEC_HSZ(o) (((gaeaddec_pyobj *)(o))->hsz)
+#define GAEADDEC_CSZ(o) (((gaeaddec_pyobj *)(o))->csz)
+#define GAEADDEC_TSZ(o) (((gaeaddec_pyobj *)(o))->tsz)
+#define GAEADDEC_CLEN(o) (((gaeaddec_pyobj *)(o))->clen)
+extern PyObject *gaeaddec_pywrap(PyObject *, gaead_dec *, unsigned,
+				 size_t, size_t, size_t);
+extern int convgaeaddec(PyObject *, void *);
+
 typedef struct gchash_pyobj {
   PyHeapTypeObject ty;
   gchash *ch;
diff --git a/catacomb.c b/catacomb.c
index f9e8587..b596b5e 100644
--- a/catacomb.c
+++ b/catacomb.c
@@ -50,6 +50,8 @@ static const struct nameval consts[] = {
   C(ED25519_KEYSZ), C(ED25519_PUBSZ), C(ED25519_SIGSZ),
     C(ED25519_MAXPERSOSZ),
   C(ED448_KEYSZ), C(ED448_PUBSZ), C(ED448_SIGSZ), C(ED448_MAXPERSOSZ),
+  C(AEADF_PCHSZ), C(AEADF_PCMSZ), C(AEADF_PCTSZ),
+  C(AEADF_AADNDEP), C(AEADF_AADFIRST), C(AEADF_NOAAD),
 #define ENTRY(tag, val, str) C(KERR_##tag),
   KEY_ERRORS(ENTRY)
 #undef ENTRY