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-rw-r--r--src/_cffi_src/openssl/cryptography.py3
-rw-r--r--src/cryptography/hazmat/backends/openssl/backend.py44
-rw-r--r--src/cryptography/hazmat/backends/openssl/ed25519.py154
-rw-r--r--src/cryptography/hazmat/primitives/asymmetric/ed25519.py80
4 files changed, 281 insertions, 0 deletions
diff --git a/src/_cffi_src/openssl/cryptography.py b/src/_cffi_src/openssl/cryptography.py
index 23ce87cf..4124dcb8 100644
--- a/src/_cffi_src/openssl/cryptography.py
+++ b/src/_cffi_src/openssl/cryptography.py
@@ -62,6 +62,8 @@ INCLUDES = """
(OPENSSL_VERSION_NUMBER < 0x101000af || CRYPTOGRAPHY_IS_LIBRESSL)
#define CRYPTOGRAPHY_OPENSSL_LESS_THAN_111 \
(OPENSSL_VERSION_NUMBER < 0x10101000 || CRYPTOGRAPHY_IS_LIBRESSL)
+#define CRYPTOGRAPHY_OPENSSL_LESS_THAN_111B \
+ (OPENSSL_VERSION_NUMBER < 0x10101020 || CRYPTOGRAPHY_IS_LIBRESSL)
"""
TYPES = """
@@ -72,6 +74,7 @@ static const int CRYPTOGRAPHY_OPENSSL_110F_OR_GREATER;
static const int CRYPTOGRAPHY_OPENSSL_LESS_THAN_102I;
static const int CRYPTOGRAPHY_OPENSSL_LESS_THAN_102;
static const int CRYPTOGRAPHY_OPENSSL_LESS_THAN_111;
+static const int CRYPTOGRAPHY_OPENSSL_LESS_THAN_111B;
static const int CRYPTOGRAPHY_IS_LIBRESSL;
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py
index e2a5fd78..61f597a3 100644
--- a/src/cryptography/hazmat/backends/openssl/backend.py
+++ b/src/cryptography/hazmat/backends/openssl/backend.py
@@ -37,6 +37,9 @@ from cryptography.hazmat.backends.openssl.dsa import (
from cryptography.hazmat.backends.openssl.ec import (
_EllipticCurvePrivateKey, _EllipticCurvePublicKey
)
+from cryptography.hazmat.backends.openssl.ed25519 import (
+ _ED25519_KEY_SIZE, _Ed25519PrivateKey, _Ed25519PublicKey
+)
from cryptography.hazmat.backends.openssl.encode_asn1 import (
_CRL_ENTRY_EXTENSION_ENCODE_HANDLERS,
_CRL_EXTENSION_ENCODE_HANDLERS, _EXTENSION_ENCODE_HANDLERS,
@@ -511,6 +514,9 @@ class Backend(object):
self.openssl_assert(dh_cdata != self._ffi.NULL)
dh_cdata = self._ffi.gc(dh_cdata, self._lib.DH_free)
return _DHPrivateKey(self, dh_cdata, evp_pkey)
+ elif key_type == getattr(self._lib, "EVP_PKEY_ED25519", None):
+ # EVP_PKEY_ED25519 is not present in OpenSSL < 1.1.1
+ return _Ed25519PrivateKey(self, evp_pkey)
elif key_type == getattr(self._lib, "EVP_PKEY_X448", None):
# EVP_PKEY_X448 is not present in OpenSSL < 1.1.1
return _X448PrivateKey(self, evp_pkey)
@@ -548,6 +554,9 @@ class Backend(object):
self.openssl_assert(dh_cdata != self._ffi.NULL)
dh_cdata = self._ffi.gc(dh_cdata, self._lib.DH_free)
return _DHPublicKey(self, dh_cdata, evp_pkey)
+ elif key_type == getattr(self._lib, "EVP_PKEY_ED25519", None):
+ # EVP_PKEY_ED25519 is not present in OpenSSL < 1.1.1
+ return _Ed25519PublicKey(self, evp_pkey)
elif key_type == getattr(self._lib, "EVP_PKEY_X448", None):
# EVP_PKEY_X448 is not present in OpenSSL < 1.1.1
return _X448PublicKey(self, evp_pkey)
@@ -2188,6 +2197,41 @@ class Backend(object):
def x448_supported(self):
return not self._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_111
+ def ed25519_supported(self):
+ return not self._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_111B
+
+ def ed25519_load_public_bytes(self, data):
+ utils._check_bytes("data", data)
+
+ if len(data) != _ED25519_KEY_SIZE:
+ raise ValueError("An Ed25519 public key is 32 bytes long")
+
+ evp_pkey = self._lib.EVP_PKEY_new_raw_public_key(
+ self._lib.NID_ED25519, self._ffi.NULL, data, len(data)
+ )
+ self.openssl_assert(evp_pkey != self._ffi.NULL)
+ evp_pkey = self._ffi.gc(evp_pkey, self._lib.EVP_PKEY_free)
+
+ return _Ed25519PublicKey(self, evp_pkey)
+
+ def ed25519_load_private_bytes(self, data):
+ if len(data) != _ED25519_KEY_SIZE:
+ raise ValueError("An Ed25519 private key is 32 bytes long")
+
+ utils._check_byteslike("data", data)
+ data_ptr = self._ffi.from_buffer(data)
+ evp_pkey = self._lib.EVP_PKEY_new_raw_private_key(
+ self._lib.NID_ED25519, self._ffi.NULL, data_ptr, len(data)
+ )
+ self.openssl_assert(evp_pkey != self._ffi.NULL)
+ evp_pkey = self._ffi.gc(evp_pkey, self._lib.EVP_PKEY_free)
+
+ return _Ed25519PrivateKey(self, evp_pkey)
+
+ def ed25519_generate_key(self):
+ evp_pkey = self._evp_pkey_keygen_gc(self._lib.NID_ED25519)
+ return _Ed25519PrivateKey(self, evp_pkey)
+
def derive_scrypt(self, key_material, salt, length, n, r, p):
buf = self._ffi.new("unsigned char[]", length)
key_material_ptr = self._ffi.from_buffer(key_material)
diff --git a/src/cryptography/hazmat/backends/openssl/ed25519.py b/src/cryptography/hazmat/backends/openssl/ed25519.py
new file mode 100644
index 00000000..15c1b1ec
--- /dev/null
+++ b/src/cryptography/hazmat/backends/openssl/ed25519.py
@@ -0,0 +1,154 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import exceptions, utils
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric.ed25519 import (
+ Ed25519PrivateKey, Ed25519PublicKey
+)
+
+_ED25519_KEY_SIZE = 32
+_ED25519_SIG_SIZE = 64
+
+
+@utils.register_interface(Ed25519PublicKey)
+class _Ed25519PublicKey(object):
+ def __init__(self, backend, evp_pkey):
+ self._backend = backend
+ self._evp_pkey = evp_pkey
+
+ def public_bytes(self, encoding, format):
+ if (
+ encoding is serialization.Encoding.Raw or
+ format is serialization.PublicFormat.Raw
+ ):
+ if (
+ encoding is not serialization.Encoding.Raw or
+ format is not serialization.PublicFormat.Raw
+ ):
+ raise ValueError(
+ "When using Raw both encoding and format must be Raw"
+ )
+
+ return self._raw_public_bytes()
+
+ if (
+ encoding in serialization._PEM_DER and
+ format is not serialization.PublicFormat.SubjectPublicKeyInfo
+ ):
+ raise ValueError(
+ "format must be SubjectPublicKeyInfo when encoding is PEM or "
+ "DER"
+ )
+
+ return self._backend._public_key_bytes(
+ encoding, format, self, self._evp_pkey, None
+ )
+
+ def _raw_public_bytes(self):
+ buf = self._backend._ffi.new("unsigned char []", _ED25519_KEY_SIZE)
+ buflen = self._backend._ffi.new("size_t *", _ED25519_KEY_SIZE)
+ res = self._backend._lib.EVP_PKEY_get_raw_public_key(
+ self._evp_pkey, buf, buflen
+ )
+ self._backend.openssl_assert(res == 1)
+ self._backend.openssl_assert(buflen[0] == _ED25519_KEY_SIZE)
+ return self._backend._ffi.buffer(buf, _ED25519_KEY_SIZE)[:]
+
+ def verify(self, signature, data):
+ evp_md_ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
+ self._backend.openssl_assert(evp_md_ctx != self._backend._ffi.NULL)
+ evp_md_ctx = self._backend._ffi.gc(
+ evp_md_ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
+ )
+ res = self._backend._lib.EVP_DigestVerifyInit(
+ evp_md_ctx, self._backend._ffi.NULL, self._backend._ffi.NULL,
+ self._backend._ffi.NULL, self._evp_pkey
+ )
+ self._backend.openssl_assert(res == 1)
+ res = self._backend._lib.EVP_DigestVerify(
+ evp_md_ctx, signature, len(signature), data, len(data)
+ )
+ if res != 1:
+ self._backend._consume_errors()
+ raise exceptions.InvalidSignature
+
+
+@utils.register_interface(Ed25519PrivateKey)
+class _Ed25519PrivateKey(object):
+ def __init__(self, backend, evp_pkey):
+ self._backend = backend
+ self._evp_pkey = evp_pkey
+
+ def public_key(self):
+ buf = self._backend._ffi.new("unsigned char []", _ED25519_KEY_SIZE)
+ buflen = self._backend._ffi.new("size_t *", _ED25519_KEY_SIZE)
+ res = self._backend._lib.EVP_PKEY_get_raw_public_key(
+ self._evp_pkey, buf, buflen
+ )
+ self._backend.openssl_assert(res == 1)
+ self._backend.openssl_assert(buflen[0] == _ED25519_KEY_SIZE)
+ public_bytes = self._backend._ffi.buffer(buf)[:]
+ return self._backend.ed25519_load_public_bytes(public_bytes)
+
+ def sign(self, data):
+ evp_md_ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
+ self._backend.openssl_assert(evp_md_ctx != self._backend._ffi.NULL)
+ evp_md_ctx = self._backend._ffi.gc(
+ evp_md_ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
+ )
+ res = self._backend._lib.EVP_DigestSignInit(
+ evp_md_ctx, self._backend._ffi.NULL, self._backend._ffi.NULL,
+ self._backend._ffi.NULL, self._evp_pkey
+ )
+ self._backend.openssl_assert(res == 1)
+ buf = self._backend._ffi.new("unsigned char[]", _ED25519_SIG_SIZE)
+ buflen = self._backend._ffi.new("size_t *", len(buf))
+ res = self._backend._lib.EVP_DigestSign(
+ evp_md_ctx, buf, buflen, data, len(data)
+ )
+ self._backend.openssl_assert(res == 1)
+ self._backend.openssl_assert(buflen[0] == _ED25519_SIG_SIZE)
+ return self._backend._ffi.buffer(buf, buflen[0])[:]
+
+ def private_bytes(self, encoding, format, encryption_algorithm):
+ if (
+ encoding is serialization.Encoding.Raw or
+ format is serialization.PublicFormat.Raw
+ ):
+ if (
+ format is not serialization.PrivateFormat.Raw or
+ encoding is not serialization.Encoding.Raw or not
+ isinstance(encryption_algorithm, serialization.NoEncryption)
+ ):
+ raise ValueError(
+ "When using Raw both encoding and format must be Raw "
+ "and encryption_algorithm must be NoEncryption"
+ )
+
+ return self._raw_private_bytes()
+
+ if (
+ encoding in serialization._PEM_DER and
+ format is not serialization.PrivateFormat.PKCS8
+ ):
+ raise ValueError(
+ "format must be PKCS8 when encoding is PEM or DER"
+ )
+
+ return self._backend._private_key_bytes(
+ encoding, format, encryption_algorithm, self._evp_pkey, None
+ )
+
+ def _raw_private_bytes(self):
+ buf = self._backend._ffi.new("unsigned char []", _ED25519_KEY_SIZE)
+ buflen = self._backend._ffi.new("size_t *", _ED25519_KEY_SIZE)
+ res = self._backend._lib.EVP_PKEY_get_raw_private_key(
+ self._evp_pkey, buf, buflen
+ )
+ self._backend.openssl_assert(res == 1)
+ self._backend.openssl_assert(buflen[0] == _ED25519_KEY_SIZE)
+ return self._backend._ffi.buffer(buf, _ED25519_KEY_SIZE)[:]
diff --git a/src/cryptography/hazmat/primitives/asymmetric/ed25519.py b/src/cryptography/hazmat/primitives/asymmetric/ed25519.py
new file mode 100644
index 00000000..96be9c58
--- /dev/null
+++ b/src/cryptography/hazmat/primitives/asymmetric/ed25519.py
@@ -0,0 +1,80 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+
+
+@six.add_metaclass(abc.ABCMeta)
+class Ed25519PublicKey(object):
+ @classmethod
+ def from_public_bytes(cls, data):
+ from cryptography.hazmat.backends.openssl.backend import backend
+ if not backend.ed25519_supported():
+ raise UnsupportedAlgorithm(
+ "ed25519 is not supported by this version of OpenSSL.",
+ _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
+ )
+
+ return backend.ed25519_load_public_bytes(data)
+
+ @abc.abstractmethod
+ def public_bytes(self, encoding, format):
+ """
+ The serialized bytes of the public key.
+ """
+
+ @abc.abstractmethod
+ def verify(self, signature, data):
+ """
+ Verify the signature.
+ """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class Ed25519PrivateKey(object):
+ @classmethod
+ def generate(cls):
+ from cryptography.hazmat.backends.openssl.backend import backend
+ if not backend.ed25519_supported():
+ raise UnsupportedAlgorithm(
+ "ed25519 is not supported by this version of OpenSSL.",
+ _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
+ )
+
+ return backend.ed25519_generate_key()
+
+ @classmethod
+ def from_private_bytes(cls, data):
+ from cryptography.hazmat.backends.openssl.backend import backend
+ if not backend.ed25519_supported():
+ raise UnsupportedAlgorithm(
+ "ed25519 is not supported by this version of OpenSSL.",
+ _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM
+ )
+
+ return backend.ed25519_load_private_bytes(data)
+
+ @abc.abstractmethod
+ def public_key(self):
+ """
+ The Ed25519PublicKey derived from the private key.
+ """
+
+ @abc.abstractmethod
+ def private_bytes(self, encoding, format, encryption_algorithm):
+ """
+ The serialized bytes of the private key.
+ """
+
+ @abc.abstractmethod
+ def sign(self, data):
+ """
+ Signs the data.
+ """
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-05 10:36:49 +0000