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-rw-r--r--CHANGELOG.rst2
-rw-r--r--docs/development/test-vectors.rst4
-rw-r--r--docs/x509/reference.rst38
-rw-r--r--src/_cffi_src/openssl/engine.py4
-rw-r--r--src/_cffi_src/openssl/evp.py26
-rw-r--r--src/_cffi_src/openssl/hmac.py31
-rw-r--r--src/cryptography/hazmat/backends/multibackend.py7
-rw-r--r--src/cryptography/hazmat/backends/openssl/backend.py9
-rw-r--r--src/cryptography/hazmat/backends/openssl/hashes.py13
-rw-r--r--src/cryptography/hazmat/backends/openssl/hmac.py13
-rw-r--r--src/cryptography/x509/extensions.py8
-rw-r--r--tests/hazmat/backends/test_multibackend.py20
-rw-r--r--tests/test_x509_ext.py22
-rw-r--r--vectors/cryptography_vectors/x509/e-trust.ru.derbin0 -> 1309 bytes
14 files changed, 163 insertions, 34 deletions
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 0bbbcde1..1c11f028 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -14,6 +14,8 @@ Changelog
to :class:`~cryptography.x509.CertificateSigningRequest`.
* Fixed an intermittent ``AssertionError`` when performing an RSA decryption on
an invalid ciphertext, ``ValueError`` is now correctly raised in all cases.
+* Added
+ :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier`.
1.2.3 - 2016-03-01
~~~~~~~~~~~~~~~~~~
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index e4618927..73ddb976 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -113,6 +113,9 @@ X.509
* ``department-of-state-root.pem`` - The intermediary CA for the Department of
State, issued by the United States Federal Government's Common Policy CA.
Notably has a ``critical`` policy constraints extensions.
+* ``e-trust.ru.der`` - A certificate from a `Russian CA`_ signed using the GOST
+ cipher and containing numerous unusual encodings such as NUMERICSTRING in
+ the subject DN.
Custom X.509 Vectors
~~~~~~~~~~~~~~~~~~~~
@@ -450,3 +453,4 @@ header format (substituting the correct information):
.. _`root data`: https://hg.mozilla.org/projects/nss/file/25b2922cc564/security/nss/lib/ckfw/builtins/certdata.txt#l2053
.. _`asymmetric/public/PKCS1/dsa.pub.pem`: https://github.com/ruby/ruby/blob/4ccb387f3bc436a08fc6d72c4931994f5de95110/test/openssl/test_pkey_dsa.rb#L53
.. _`Mozilla bug`: https://bugzilla.mozilla.org/show_bug.cgi?id=233586
+.. _`Russian CA`: http://e-trust.gosuslugi.ru/MainCA
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index 67427ddb..399d693a 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -1541,6 +1541,13 @@ X.509 Extensions
.. versionadded:: 1.0
+ .. note::
+
+ This method should be used if the issuer certificate does not
+ contain a :class:`~cryptography.x509.SubjectKeyIdentifier`.
+ Otherwise, use
+ :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier`.
+
Creates a new AuthorityKeyIdentifier instance using the public key
provided to generate the appropriate digest. This should be the
**issuer's public key**. The resulting object will contain
@@ -1568,6 +1575,37 @@ X.509 Extensions
>>> x509.AuthorityKeyIdentifier.from_issuer_public_key(issuer_cert.public_key())
<AuthorityKeyIdentifier(key_identifier='X\x01\x84$\x1b\xbc+R\x94J=\xa5\x10r\x14Q\xf5\xaf:\xc9', authority_cert_issuer=None, authority_cert_serial_number=None)>
+ .. classmethod:: from_issuer_subject_key_identifier(ski)
+
+ .. versionadded:: 1.3
+
+ .. note::
+ This method should be used if the issuer certificate contains a
+ :class:`~cryptography.x509.SubjectKeyIdentifier`. Otherwise, use
+ :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_public_key`.
+
+ Creates a new AuthorityKeyIdentifier instance using the
+ SubjectKeyIdentifier from the issuer certificate. The resulting object
+ will contain
+ :attr:`~cryptography.x509.AuthorityKeyIdentifier.key_identifier`, but
+ :attr:`~cryptography.x509.AuthorityKeyIdentifier.authority_cert_issuer`
+ and
+ :attr:`~cryptography.x509.AuthorityKeyIdentifier.authority_cert_serial_number`
+ will be None.
+
+ :param ski: The
+ :class:`~cryptography.x509.SubjectKeyIdentifier` from the issuer
+ certificate.
+
+ .. doctest::
+
+ >>> from cryptography import x509
+ >>> from cryptography.hazmat.backends import default_backend
+ >>> issuer_cert = x509.load_pem_x509_certificate(pem_data, default_backend())
+ >>> ski = issuer_cert.extensions.get_extension_for_class(x509.SubjectKeyIdentifier)
+ >>> x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier(ski)
+ <AuthorityKeyIdentifier(key_identifier='X\x01\x84$\x1b\xbc+R\x94J=\xa5\x10r\x14Q\xf5\xaf:\xc9', authority_cert_issuer=None, authority_cert_serial_number=None)>
+
.. class:: SubjectKeyIdentifier(digest)
.. versionadded:: 0.9
diff --git a/src/_cffi_src/openssl/engine.py b/src/_cffi_src/openssl/engine.py
index 77c97fe5..afdd54e4 100644
--- a/src/_cffi_src/openssl/engine.py
+++ b/src/_cffi_src/openssl/engine.py
@@ -16,12 +16,10 @@ typedef ... RSA_METHOD;
typedef ... DSA_METHOD;
typedef ... DH_METHOD;
typedef struct {
- void (*seed)(const void *, int);
int (*bytes)(unsigned char *, int);
- void (*cleanup)();
- void (*add)(const void *, int, double);
int (*pseudorand)(unsigned char *, int);
int (*status)();
+ ...;
} RAND_METHOD;
typedef int (*ENGINE_GEN_INT_FUNC_PTR)(ENGINE *);
typedef ... *ENGINE_CTRL_FUNC_PTR;
diff --git a/src/_cffi_src/openssl/evp.py b/src/_cffi_src/openssl/evp.py
index a91a9666..5abc6451 100644
--- a/src/_cffi_src/openssl/evp.py
+++ b/src/_cffi_src/openssl/evp.py
@@ -12,9 +12,7 @@ TYPES = """
typedef ... EVP_CIPHER;
typedef ... EVP_CIPHER_CTX;
typedef ... EVP_MD;
-typedef struct env_md_ctx_st {
- ...;
-} EVP_MD_CTX;
+typedef struct { ...; } EVP_MD_CTX;
typedef ... EVP_PKEY;
typedef ... EVP_PKEY_CTX;
@@ -55,13 +53,11 @@ EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *);
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *, int);
-EVP_MD_CTX *EVP_MD_CTX_create(void);
int EVP_MD_CTX_copy_ex(EVP_MD_CTX *, const EVP_MD_CTX *);
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 *);
EVP_PKEY *EVP_PKEY_new(void);
@@ -115,6 +111,12 @@ int EVP_PKEY_cmp(const EVP_PKEY *, const EVP_PKEY *);
EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *);
int Cryptography_EVP_PKEY_id(const EVP_PKEY *);
+
+/* in 1.1.0 _create and _destroy were renamed to _new and _free. The following
+ two functions wrap both the old and new functions so we can call them
+ without worrying about what OpenSSL we're running against. */
+EVP_MD_CTX *Cryptography_EVP_MD_CTX_new(void);
+void Cryptography_EVP_MD_CTX_free(EVP_MD_CTX *);
"""
MACROS = """
@@ -235,4 +237,18 @@ int Cryptography_EVP_PKEY_id(const EVP_PKEY *key) {
return key->type;
#endif
}
+EVP_MD_CTX *Cryptography_EVP_MD_CTX_new(void) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ return EVP_MD_CTX_create();
+#else
+ return EVP_MD_CTX_new();
+#endif
+}
+void Cryptography_EVP_MD_CTX_free(EVP_MD_CTX *ctx) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+ EVP_MD_CTX_destroy(ctx);
+#else
+ EVP_MD_CTX_free(ctx);
+#endif
+}
"""
diff --git a/src/_cffi_src/openssl/hmac.py b/src/_cffi_src/openssl/hmac.py
index 7178e573..bcc8a861 100644
--- a/src/_cffi_src/openssl/hmac.py
+++ b/src/_cffi_src/openssl/hmac.py
@@ -9,18 +9,17 @@ INCLUDES = """
"""
TYPES = """
-typedef struct { ...; } HMAC_CTX;
+typedef ... HMAC_CTX;
"""
FUNCTIONS = """
-void HMAC_CTX_init(HMAC_CTX *);
-void HMAC_CTX_cleanup(HMAC_CTX *);
-
int Cryptography_HMAC_Init_ex(HMAC_CTX *, const void *, int, const EVP_MD *,
ENGINE *);
int Cryptography_HMAC_Update(HMAC_CTX *, const unsigned char *, size_t);
int Cryptography_HMAC_Final(HMAC_CTX *, unsigned char *, unsigned int *);
int Cryptography_HMAC_CTX_copy(HMAC_CTX *, HMAC_CTX *);
+HMAC_CTX *Cryptography_HMAC_CTX_new(void);
+void Cryptography_HMAC_CTX_free(HMAC_CTX *ctx);
"""
MACROS = """
@@ -80,4 +79,28 @@ int Cryptography_HMAC_CTX_copy(HMAC_CTX *dst_ctx, HMAC_CTX *src_ctx) {
return 0;
#endif
}
+
+HMAC_CTX *Cryptography_HMAC_CTX_new(void) {
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+ return HMAC_CTX_new();
+#else
+ /* This uses OPENSSL_zalloc in 1.1.0, which is malloc + memset */
+ HMAC_CTX *ctx = (HMAC_CTX *)OPENSSL_malloc(sizeof(HMAC_CTX));
+ memset(ctx, 0, sizeof(HMAC_CTX));
+ return ctx;
+#endif
+}
+
+
+
+void Cryptography_HMAC_CTX_free(HMAC_CTX *ctx) {
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
+ return HMAC_CTX_free(ctx);
+#else
+ if (ctx != NULL) {
+ HMAC_CTX_cleanup(ctx);
+ OPENSSL_free(ctx);
+ }
+#endif
+}
"""
diff --git a/src/cryptography/hazmat/backends/multibackend.py b/src/cryptography/hazmat/backends/multibackend.py
index 65f18531..48bc7d08 100644
--- a/src/cryptography/hazmat/backends/multibackend.py
+++ b/src/cryptography/hazmat/backends/multibackend.py
@@ -28,6 +28,13 @@ class MultiBackend(object):
name = "multibackend"
def __init__(self, backends):
+ if len(backends) == 0:
+ raise ValueError(
+ "Multibackend cannot be initialized with no backends. If you "
+ "are seeing this error when trying to use default_backend() "
+ "please try uninstalling and reinstalling cryptography."
+ )
+
self._backends = backends
def _filtered_backends(self, interface):
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py
index e47f747c..064f9ad6 100644
--- a/src/cryptography/hazmat/backends/openssl/backend.py
+++ b/src/cryptography/hazmat/backends/openssl/backend.py
@@ -1003,11 +1003,14 @@ class Backend(object):
x509_revoked, serial_number
)
self.openssl_assert(res == 1)
- res = self._lib.ASN1_TIME_set(
- x509_revoked.revocationDate,
+ rev_date = self._lib.ASN1_TIME_set(
+ self._ffi.NULL,
calendar.timegm(builder._revocation_date.timetuple())
)
- self.openssl_assert(res != self._ffi.NULL)
+ self.openssl_assert(rev_date != self._ffi.NULL)
+ rev_date = self._ffi.gc(rev_date, self._lib.ASN1_TIME_free)
+ res = self._lib.X509_REVOKED_set_revocationDate(x509_revoked, rev_date)
+ self.openssl_assert(res == 1)
# add CRL entry extensions
self._create_x509_extensions(
extensions=builder._extensions,
diff --git a/src/cryptography/hazmat/backends/openssl/hashes.py b/src/cryptography/hazmat/backends/openssl/hashes.py
index 02ce5f0d..2c8fce1a 100644
--- a/src/cryptography/hazmat/backends/openssl/hashes.py
+++ b/src/cryptography/hazmat/backends/openssl/hashes.py
@@ -18,9 +18,10 @@ class _HashContext(object):
self._backend = backend
if ctx is None:
- ctx = self._backend._lib.EVP_MD_CTX_create()
- ctx = self._backend._ffi.gc(ctx,
- self._backend._lib.EVP_MD_CTX_destroy)
+ ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
+ ctx = self._backend._ffi.gc(
+ ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
+ )
evp_md = self._backend._lib.EVP_get_digestbyname(
algorithm.name.encode("ascii"))
if evp_md == self._backend._ffi.NULL:
@@ -38,9 +39,9 @@ class _HashContext(object):
algorithm = utils.read_only_property("_algorithm")
def copy(self):
- copied_ctx = self._backend._lib.EVP_MD_CTX_create()
+ copied_ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
copied_ctx = self._backend._ffi.gc(
- copied_ctx, self._backend._lib.EVP_MD_CTX_destroy
+ copied_ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
)
res = self._backend._lib.EVP_MD_CTX_copy_ex(copied_ctx, self._ctx)
self._backend.openssl_assert(res != 0)
@@ -57,6 +58,4 @@ class _HashContext(object):
res = self._backend._lib.EVP_DigestFinal_ex(self._ctx, buf, outlen)
self._backend.openssl_assert(res != 0)
self._backend.openssl_assert(outlen[0] == self.algorithm.digest_size)
- res = self._backend._lib.EVP_MD_CTX_cleanup(self._ctx)
- self._backend.openssl_assert(res == 1)
return self._backend._ffi.buffer(buf)[:outlen[0]]
diff --git a/src/cryptography/hazmat/backends/openssl/hmac.py b/src/cryptography/hazmat/backends/openssl/hmac.py
index dcf2fbaf..ab1ad46f 100644
--- a/src/cryptography/hazmat/backends/openssl/hmac.py
+++ b/src/cryptography/hazmat/backends/openssl/hmac.py
@@ -20,10 +20,10 @@ class _HMACContext(object):
self._backend = backend
if ctx is None:
- ctx = self._backend._ffi.new("HMAC_CTX *")
- self._backend._lib.HMAC_CTX_init(ctx)
+ ctx = self._backend._lib.Cryptography_HMAC_CTX_new()
+ self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
ctx = self._backend._ffi.gc(
- ctx, self._backend._lib.HMAC_CTX_cleanup
+ ctx, self._backend._lib.Cryptography_HMAC_CTX_free
)
evp_md = self._backend._lib.EVP_get_digestbyname(
algorithm.name.encode('ascii'))
@@ -44,10 +44,10 @@ class _HMACContext(object):
algorithm = utils.read_only_property("_algorithm")
def copy(self):
- copied_ctx = self._backend._ffi.new("HMAC_CTX *")
- self._backend._lib.HMAC_CTX_init(copied_ctx)
+ copied_ctx = self._backend._lib.Cryptography_HMAC_CTX_new()
+ self._backend.openssl_assert(copied_ctx != self._backend._ffi.NULL)
copied_ctx = self._backend._ffi.gc(
- copied_ctx, self._backend._lib.HMAC_CTX_cleanup
+ copied_ctx, self._backend._lib.Cryptography_HMAC_CTX_free
)
res = self._backend._lib.Cryptography_HMAC_CTX_copy(
copied_ctx, self._ctx
@@ -72,7 +72,6 @@ class _HMACContext(object):
)
self._backend.openssl_assert(res != 0)
self._backend.openssl_assert(outlen[0] == self.algorithm.digest_size)
- self._backend._lib.HMAC_CTX_cleanup(self._ctx)
return self._backend._ffi.buffer(buf)[:outlen[0]]
def verify(self, signature):
diff --git a/src/cryptography/x509/extensions.py b/src/cryptography/x509/extensions.py
index 0aa67212..87d2de1c 100644
--- a/src/cryptography/x509/extensions.py
+++ b/src/cryptography/x509/extensions.py
@@ -191,6 +191,14 @@ class AuthorityKeyIdentifier(object):
authority_cert_serial_number=None
)
+ @classmethod
+ def from_issuer_subject_key_identifier(cls, ski):
+ return cls(
+ key_identifier=ski.value.digest,
+ authority_cert_issuer=None,
+ authority_cert_serial_number=None
+ )
+
def __repr__(self):
return (
"<AuthorityKeyIdentifier(key_identifier={0.key_identifier!r}, "
diff --git a/tests/hazmat/backends/test_multibackend.py b/tests/hazmat/backends/test_multibackend.py
index 74835716..bf54d5ce 100644
--- a/tests/hazmat/backends/test_multibackend.py
+++ b/tests/hazmat/backends/test_multibackend.py
@@ -4,6 +4,8 @@
from __future__ import absolute_import, division, print_function
+import pytest
+
from cryptography import utils
from cryptography.exceptions import (
UnsupportedAlgorithm, _Reasons
@@ -21,6 +23,10 @@ from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from ...utils import raises_unsupported_algorithm
+class DummyBackend(object):
+ pass
+
+
@utils.register_interface(CipherBackend)
class DummyCipherBackend(object):
def __init__(self, supported_ciphers):
@@ -226,6 +232,10 @@ class DummyX509Backend(object):
class TestMultiBackend(object):
+ def test_raises_error_with_empty_list(self):
+ with pytest.raises(ValueError):
+ MultiBackend([])
+
def test_ciphers(self):
backend = MultiBackend([
DummyHashBackend([]),
@@ -310,7 +320,7 @@ class TestMultiBackend(object):
backend.load_rsa_public_numbers("public_numbers")
- backend = MultiBackend([])
+ backend = MultiBackend([DummyBackend()])
with raises_unsupported_algorithm(
_Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
):
@@ -353,7 +363,7 @@ class TestMultiBackend(object):
backend.load_dsa_public_numbers("numbers")
backend.load_dsa_parameter_numbers("numbers")
- backend = MultiBackend([])
+ backend = MultiBackend([DummyBackend()])
with raises_unsupported_algorithm(
_Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
):
@@ -491,7 +501,7 @@ class TestMultiBackend(object):
backend.load_pem_private_key(b"keydata", None)
backend.load_pem_public_key(b"keydata")
- backend = MultiBackend([])
+ backend = MultiBackend([DummyBackend()])
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
backend.load_pem_private_key(b"keydata", None)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
@@ -503,7 +513,7 @@ class TestMultiBackend(object):
backend.load_der_private_key(b"keydata", None)
backend.load_der_public_key(b"keydata")
- backend = MultiBackend([])
+ backend = MultiBackend([DummyBackend()])
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
backend.load_der_private_key(b"keydata", None)
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_SERIALIZATION):
@@ -523,7 +533,7 @@ class TestMultiBackend(object):
backend.create_x509_crl(object(), b"privatekey", hashes.SHA1())
backend.create_x509_revoked_certificate(object())
- backend = MultiBackend([])
+ backend = MultiBackend([DummyBackend()])
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
backend.load_pem_x509_certificate(b"certdata")
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_X509):
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index d85b4bbc..28ddab87 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -2634,6 +2634,28 @@ class TestAuthorityKeyIdentifierExtension(object):
)
assert ext.value == aki
+ def test_from_issuer_subject_key_identifier(self, backend):
+ issuer_cert = _load_cert(
+ os.path.join("x509", "rapidssl_sha256_ca_g3.pem"),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ cert = _load_cert(
+ os.path.join("x509", "cryptography.io.pem"),
+ x509.load_pem_x509_certificate,
+ backend
+ )
+ ext = cert.extensions.get_extension_for_oid(
+ ExtensionOID.AUTHORITY_KEY_IDENTIFIER
+ )
+ ski = issuer_cert.extensions.get_extension_for_class(
+ x509.SubjectKeyIdentifier
+ )
+ aki = x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier(
+ ski
+ )
+ assert ext.value == aki
+
class TestNameConstraints(object):
def test_ipaddress_wrong_type(self):
diff --git a/vectors/cryptography_vectors/x509/e-trust.ru.der b/vectors/cryptography_vectors/x509/e-trust.ru.der
new file mode 100644
index 00000000..72b581fe
--- /dev/null
+++ b/vectors/cryptography_vectors/x509/e-trust.ru.der
Binary files differ
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 08:22:13 +0000