ECDSA bindings

2 files changed, 131 insertions, 0 deletions

diff --git a/cryptography/hazmat/bindings/openssl/binding.py b/cryptography/hazmat/bindings/openssl/binding.py
index 0469a1ea..927406c6 100644
--- a/cryptography/hazmat/bindings/openssl/binding.py
+++ b/cryptography/hazmat/bindings/openssl/binding.py
@@ -53,6 +53,7 @@ class Binding(object):
         "dh",
         "dsa",
         "ec",
+        "ecdsa",
         "engine",
         "err",
         "evp",
diff --git a/cryptography/hazmat/bindings/openssl/ecdsa.py b/cryptography/hazmat/bindings/openssl/ecdsa.py
new file mode 100644
index 00000000..bfa67206
--- /dev/null
+++ b/cryptography/hazmat/bindings/openssl/ecdsa.py
@@ -0,0 +1,130 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import, division, print_function
+
+INCLUDES = """
+#ifndef OPENSSL_NO_ECDSA
+#include <openssl/ecdsa.h>
+#endif
+"""
+
+TYPES = """
+static const int Cryptography_HAS_ECDSA;
+
+typedef struct {
+    BIGNUM *r;
+    BIGNUM *s;
+} ECDSA_SIG;
+
+typedef ... CRYPTO_EX_new;
+typedef ... CRYPTO_EX_dup;
+typedef ... CRYPTO_EX_free;
+"""
+
+FUNCTIONS = """
+"""
+
+MACROS = """
+ECDSA_SIG *ECDSA_SIG_new();
+void ECDSA_SIG_free(ECDSA_SIG *);
+int i2d_ECDSA_SIG(const ECDSA_SIG *, unsigned char **);
+ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **s, const unsigned char **, long);
+ECDSA_SIG *ECDSA_do_sign(const unsigned char *, int, EC_KEY *);
+ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *, int, const BIGNUM *,
+                            const BIGNUM *, EC_KEY *);
+int ECDSA_do_verify(const unsigned char *, int, const ECDSA_SIG *, EC_KEY*);
+int ECDSA_sign_setup(EC_KEY *, BN_CTX *, BIGNUM **, BIGNUM **);
+int ECDSA_sign(int, const unsigned char *, int, unsigned char *,
+               unsigned int *, EC_KEY *);
+int ECDSA_sign_ex(int, const unsigned char *, int dgstlen, unsigned char *,
+                  unsigned int *, const BIGNUM *, const BIGNUM *, EC_KEY *);
+int ECDSA_verify(int, const unsigned char *, int, const unsigned char *, int,
+                 EC_KEY *);
+int ECDSA_size(const EC_KEY *);
+
+const ECDSA_METHOD* ECDSA_OpenSSL();
+void ECDSA_set_default_method(const ECDSA_METHOD *);
+const ECDSA_METHOD* ECDSA_get_default_method();
+int ECDSA_get_ex_new_index(long, void *, CRYPTO_EX_new *,
+                           CRYPTO_EX_dup *, CRYPTO_EX_free *);
+int ECDSA_set_method(EC_KEY *, const ECDSA_METHOD *);
+int ECDSA_set_ex_data(EC_KEY *, int, void *);
+void *ECDSA_get_ex_data(EC_KEY *, int);
+"""
+
+CUSTOMIZATIONS = """
+#ifdef OPENSSL_NO_ECDSA
+static const long Cryptography_HAS_ECDSA = 0;
+
+typedef struct {
+    BIGNUM *r;
+    BIGNUM *s;
+} ECDSA_SIG;
+
+ECDSA_SIG* (*ECDSA_SIG_new)() = NULL;
+void (*ECDSA_SIG_free)(ECDSA_SIG *) = NULL;
+int (*i2d_ECDSA_SIG)(const ECDSA_SIG *, unsigned char **) = NULL;
+ECDSA_SIG* (*d2i_ECDSA_SIG)(ECDSA_SIG **s, const unsigned char **,
+                            long) = NULL;
+ECDSA_SIG* (*ECDSA_do_sign)(const unsigned char *, int, EC_KEY *eckey) = NULL;
+ECDSA_SIG* (*ECDSA_do_sign_ex)(const unsigned char *, int, const BIGNUM *,
+                               const BIGNUM *, EC_KEY *) = NULL;
+int (*ECDSA_do_verify)(const unsigned char *, int, const ECDSA_SIG *,
+                       EC_KEY*) = NULL;
+int (*ECDSA_sign_setup)(EC_KEY *, BN_CTX *, BIGNUM **, BIGNUM **) = NULL;
+int (*ECDSA_sign)(int, const unsigned char *, int, unsigned char *,
+                  unsigned int *, EC_KEY *) = NULL;
+int (*ECDSA_sign_ex)(int, const unsigned char *, int dgstlen, unsigned char *,
+                     unsigned int *, const BIGNUM *, const BIGNUM *,
+                     EC_KEY *) = NULL;
+int (*ECDSA_verify)(int, const unsigned char *, int, const unsigned char *,
+                    int, EC_KEY *) = NULL;
+int (*ECDSA_size)(const EC_KEY *) = NULL;
+
+const ECDSA_METHOD* (*ECDSA_OpenSSL)() = NULL;
+void (*ECDSA_set_default_method)(const ECDSA_METHOD *) = NULL;
+const ECDSA_METHOD* (*ECDSA_get_default_method)() = NULL;
+int (*ECDSA_set_method)(EC_KEY *, const ECDSA_METHOD *) = NULL;
+int (*ECDSA_get_ex_new_index)(long, void *, CRYPTO_EX_new *,
+                              CRYPTO_EX_dup *, CRYPTO_EX_free *) = NULL;
+int (*ECDSA_set_ex_data)(EC_KEY *, int, void *) = NULL;
+void* (*ECDSA_get_ex_data)(EC_KEY *, int) = NULL;
+#else
+static const long Cryptography_HAS_ECDSA = 1;
+#endif
+"""
+
+CONDITIONAL_NAMES = {
+    "Cryptography_HAS_ECDSA": [
+        "ECDSA_SIG_new",
+        "ECDSA_SIG_free",
+        "i2d_ECDSA_SIG",
+        "d2i_ECDSA_SIG",
+        "ECDSA_do_sign",
+        "ECDSA_do_sign_ex",
+        "ECDSA_do_verify",
+        "ECDSA_sign_setup",
+        "ECDSA_sign",
+        "ECDSA_sign_ex",
+        "ECDSA_verify",
+        "ECDSA_size",
+        "ECDSA_OpenSSL",
+        "ECDSA_set_default_method",
+        "ECDSA_get_default_method",
+        "ECDSA_set_method",
+        "ECDSA_get_ex_new_index",
+        "ECDSA_set_ex_data",
+        "ECDSA_get_ex_data",
+    ],
+}