diff --git a/.travis.yml b/.travis.yml
index 89f0b10..defcd77 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,9 +9,6 @@
     - TOX_ENV=docs
     - TOX_ENV=pep8
 
-before_install:
-    - sudo rm /etc/apt/sources.list.d/mongodb.list
-
 install:
     - "[[ ${TOX_ENV} == pypy ]] && sudo add-apt-repository -y ppa:pypy/ppa || true"
     - "[[ ${TOX_ENV} == pypy ]] && sudo apt-get -y update && sudo apt-get -y install pypy || true"
diff --git a/cryptography/bindings/openssl/api.py b/cryptography/bindings/openssl/api.py
index cf3389d..5eefcdb 100644
--- a/cryptography/bindings/openssl/api.py
+++ b/cryptography/bindings/openssl/api.py
@@ -25,6 +25,7 @@
     OpenSSL API wrapper.
     """
     _modules = [
+        "asn1",
         "bignum",
         "bio",
         "conf",
@@ -35,6 +36,7 @@
         "err",
         "evp",
         "opensslv",
+        "pkcs7",
         "rand",
         "rsa",
         "ssl",
diff --git a/cryptography/bindings/openssl/asn1.py b/cryptography/bindings/openssl/asn1.py
new file mode 100644
index 0000000..5bd72e9
--- /dev/null
+++ b/cryptography/bindings/openssl/asn1.py
@@ -0,0 +1,121 @@
+# 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.
+
+INCLUDES = """
+#include <openssl/asn1.h>
+"""
+
+TYPES = """
+typedef ... time_t;
+
+typedef int ASN1_BOOLEAN;
+typedef ... ASN1_INTEGER;
+
+struct asn1_string_st {
+    int length;
+    int type;
+    unsigned char *data;
+    long flags;
+};
+
+typedef struct asn1_string_st ASN1_OCTET_STRING;
+typedef struct asn1_string_st ASN1_IA5STRING;
+typedef ... ASN1_OBJECT;
+typedef ... ASN1_STRING;
+typedef ... ASN1_TYPE;
+typedef ... ASN1_GENERALIZEDTIME;
+typedef ... ASN1_ENUMERATED;
+typedef ... ASN1_ITEM;
+typedef ... ASN1_VALUE;
+
+typedef struct {
+    ...;
+} ASN1_TIME;
+typedef const ASN1_ITEM ASN1_ITEM_EXP;
+
+typedef ... ASN1_UTCTIME;
+
+static const int V_ASN1_GENERALIZEDTIME;
+
+static const int MBSTRING_UTF8;
+"""
+
+FUNCTIONS = """
+ASN1_OBJECT *ASN1_OBJECT_new();
+void ASN1_OBJECT_free(ASN1_OBJECT *);
+
+/*  ASN1 OBJECT IDENTIFIER */
+ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **, const unsigned char **, long);
+int i2d_ASN1_OBJECT(ASN1_OBJECT *, unsigned char **);
+
+/*  ASN1 STRING */
+ASN1_STRING *ASN1_STRING_new();
+ASN1_STRING *ASN1_STRING_type_new(int);
+void ASN1_STRING_free(ASN1_STRING *);
+unsigned char *ASN1_STRING_data(ASN1_STRING *);
+int ASN1_STRING_set(ASN1_STRING *, const void *, int);
+int ASN1_STRING_type(ASN1_STRING *);
+int ASN1_STRING_to_UTF8(unsigned char **, ASN1_STRING *);
+
+/*  ASN1 OCTET STRING */
+ASN1_OCTET_STRING *ASN1_OCTET_STRING_new();
+void ASN1_OCTET_STRING_free(ASN1_OCTET_STRING *);
+int ASN1_OCTET_STRING_set(ASN1_OCTET_STRING *, const unsigned char *, int);
+
+/*  ASN1 INTEGER */
+ASN1_INTEGER *ASN1_INTEGER_new();
+void ASN1_INTEGER_free(ASN1_INTEGER *);
+int ASN1_INTEGER_set(ASN1_INTEGER *, long);
+int i2a_ASN1_INTEGER(BIO *, ASN1_INTEGER *);
+
+/*  ASN1 TIME */
+ASN1_TIME *ASN1_TIME_new();
+ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *,
+                                                   ASN1_GENERALIZEDTIME **);
+
+/*  ASN1 UTCTIME */
+int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *, time_t);
+
+/*  ASN1 GENERALIZEDTIME */
+int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *, const char *);
+void ASN1_GENERALIZEDTIME_free(ASN1_GENERALIZEDTIME *);
+int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *);
+
+/*  ASN1 ENUMERATED */
+ASN1_ENUMERATED *ASN1_ENUMERATED_new();
+void ASN1_ENUMERATED_free(ASN1_ENUMERATED *);
+int ASN1_ENUMERATED_set(ASN1_ENUMERATED *, long);
+
+ASN1_VALUE *ASN1_item_d2i(ASN1_VALUE **, const unsigned char **, long,
+                          const ASN1_ITEM *);
+"""
+
+MACROS = """
+ASN1_TIME *M_ASN1_TIME_dup(void *);
+ASN1_ITEM *ASN1_ITEM_ptr(ASN1_ITEM *);
+
+/* These aren't macros these arguments are all const X on openssl > 1.0.x */
+
+int ASN1_STRING_length(ASN1_STRING *);
+ASN1_STRING *ASN1_STRING_dup(ASN1_STRING *);
+int ASN1_STRING_cmp(ASN1_STRING *, ASN1_STRING *);
+
+ASN1_OCTET_STRING *ASN1_OCTET_STRING_dup(ASN1_OCTET_STRING *);
+int ASN1_OCTET_STRING_cmp(ASN1_OCTET_STRING *, ASN1_OCTET_STRING *);
+
+ASN1_INTEGER *ASN1_INTEGER_dup(ASN1_INTEGER *);
+int ASN1_INTEGER_cmp(ASN1_INTEGER *, ASN1_INTEGER *);
+long ASN1_INTEGER_get(ASN1_INTEGER *);
+
+BIGNUM *ASN1_INTEGER_to_BN(ASN1_INTEGER *, BIGNUM *);
+"""
diff --git a/cryptography/bindings/openssl/evp.py b/cryptography/bindings/openssl/evp.py
index ed43c99..2b7b0f4 100644
--- a/cryptography/bindings/openssl/evp.py
+++ b/cryptography/bindings/openssl/evp.py
@@ -22,10 +22,18 @@
 typedef ... EVP_CIPHER;
 typedef ... EVP_MD;
 typedef struct env_md_ctx_st EVP_MD_CTX;
+
+typedef struct evp_pkey_st {
+    int type;
+    ...;
+} EVP_PKEY;
+static const int EVP_PKEY_RSA;
+static const int EVP_PKEY_DSA;
 """
 
 FUNCTIONS = """
 void OpenSSL_add_all_algorithms();
+
 const EVP_CIPHER *EVP_get_cipherbyname(const char *);
 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *, const EVP_CIPHER *, ENGINE *,
                        const unsigned char *, const unsigned char *);
@@ -43,11 +51,29 @@
 int EVP_DigestInit_ex(EVP_MD_CTX *, const EVP_MD *, ENGINE *);
 int EVP_DigestUpdate(EVP_MD_CTX *, const void *, size_t);
 int EVP_DigestFinal_ex(EVP_MD_CTX *, unsigned char *, unsigned int *);
+int EVP_MD_CTX_cleanup(EVP_MD_CTX *);
 void EVP_MD_CTX_destroy(EVP_MD_CTX *);
 const EVP_MD *EVP_get_digestbyname(const char *);
 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *);
 int EVP_MD_size(const EVP_MD *);
+
+EVP_PKEY *EVP_PKEY_new();
+void EVP_PKEY_free(EVP_PKEY *);
+int EVP_PKEY_type(int);
+int EVP_PKEY_bits(EVP_PKEY *);
+RSA *EVP_PKEY_get1_RSA(EVP_PKEY *);
+
+int EVP_SignInit(EVP_MD_CTX *, const EVP_MD *);
+int EVP_SignUpdate(EVP_MD_CTX *, const void *, size_t);
+int EVP_SignFinal(EVP_MD_CTX *, unsigned char *, unsigned int *, EVP_PKEY *);
+
+int EVP_VerifyInit(EVP_MD_CTX *, const EVP_MD *);
+int EVP_VerifyUpdate(EVP_MD_CTX *, const void *, size_t);
+int EVP_VerifyFinal(EVP_MD_CTX *, const unsigned char *, unsigned int,
+                    EVP_PKEY *);
 """
 
 MACROS = """
+int EVP_PKEY_assign_RSA(EVP_PKEY *, RSA *);
+int EVP_PKEY_assign_DSA(EVP_PKEY *, DSA *);
 """
diff --git a/cryptography/bindings/openssl/pkcs7.py b/cryptography/bindings/openssl/pkcs7.py
new file mode 100644
index 0000000..752bfa0
--- /dev/null
+++ b/cryptography/bindings/openssl/pkcs7.py
@@ -0,0 +1,34 @@
+# 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.
+
+INCLUDES = """
+#include <openssl/pkcs7.h>
+"""
+
+TYPES = """
+typedef struct {
+    ASN1_OBJECT *type;
+    ...;
+} PKCS7;
+"""
+
+FUNCTIONS = """
+void PKCS7_free(PKCS7 *);
+"""
+
+MACROS = """
+int PKCS7_type_is_signed(PKCS7 *);
+int PKCS7_type_is_enveloped(PKCS7 *);
+int PKCS7_type_is_signedAndEnveloped(PKCS7 *);
+int PKCS7_type_is_data(PKCS7 *);
+"""