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community
godot
Commits
8e3f9aa6
Commit
8e3f9aa6
authored
Jun 06, 2020
by
Fabio Alessandrelli
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Implement RSA encryption/decryption.
parent
dfcc11fa
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4 changed files
with
33 additions
and
0 deletions
+33
-0
crypto.cpp
core/crypto/crypto.cpp
+2
-0
crypto.h
core/crypto/crypto.h
+2
-0
crypto_mbedtls.cpp
modules/mbedtls/crypto_mbedtls.cpp
+27
-0
crypto_mbedtls.h
modules/mbedtls/crypto_mbedtls.h
+2
-0
No files found.
core/crypto/crypto.cpp
View file @
8e3f9aa6
...
...
@@ -88,6 +88,8 @@ void Crypto::_bind_methods() {
ClassDB
::
bind_method
(
D_METHOD
(
"generate_self_signed_certificate"
,
"key"
,
"issuer_name"
,
"not_before"
,
"not_after"
),
&
Crypto
::
generate_self_signed_certificate
,
DEFVAL
(
"CN=myserver,O=myorganisation,C=IT"
),
DEFVAL
(
"20140101000000"
),
DEFVAL
(
"20340101000000"
));
ClassDB
::
bind_method
(
D_METHOD
(
"sign"
,
"hash_type"
,
"hash"
,
"key"
),
&
Crypto
::
sign
);
ClassDB
::
bind_method
(
D_METHOD
(
"verify"
,
"hash_type"
,
"hash"
,
"signature"
,
"key"
),
&
Crypto
::
verify
);
ClassDB
::
bind_method
(
D_METHOD
(
"encrypt"
,
"key"
,
"plaintext"
),
&
Crypto
::
encrypt
);
ClassDB
::
bind_method
(
D_METHOD
(
"decrypt"
,
"key"
,
"ciphertext"
),
&
Crypto
::
decrypt
);
}
/// Resource loader/saver
...
...
core/crypto/crypto.h
View file @
8e3f9aa6
...
...
@@ -85,6 +85,8 @@ public:
virtual
Vector
<
uint8_t
>
sign
(
HashingContext
::
HashType
p_hash_type
,
Vector
<
uint8_t
>
p_hash
,
Ref
<
CryptoKey
>
p_key
)
=
0
;
virtual
bool
verify
(
HashingContext
::
HashType
p_hash_type
,
Vector
<
uint8_t
>
p_hash
,
Vector
<
uint8_t
>
p_signature
,
Ref
<
CryptoKey
>
p_key
)
=
0
;
virtual
Vector
<
uint8_t
>
encrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_plaintext
)
=
0
;
virtual
Vector
<
uint8_t
>
decrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_ciphertext
)
=
0
;
Crypto
()
{}
};
...
...
modules/mbedtls/crypto_mbedtls.cpp
View file @
8e3f9aa6
...
...
@@ -362,3 +362,30 @@ bool CryptoMbedTLS::verify(HashingContext::HashType p_hash_type, Vector<uint8_t>
ERR_FAIL_COND_V_MSG
(
!
key
.
is_valid
(),
false
,
"Invalid key provided."
);
return
mbedtls_pk_verify
(
&
(
key
->
pkey
),
type
,
p_hash
.
ptr
(),
size
,
p_signature
.
ptr
(),
p_signature
.
size
())
==
0
;
}
Vector
<
uint8_t
>
CryptoMbedTLS
::
encrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_plaintext
)
{
Ref
<
CryptoKeyMbedTLS
>
key
=
static_cast
<
Ref
<
CryptoKeyMbedTLS
>>
(
p_key
);
ERR_FAIL_COND_V_MSG
(
!
key
.
is_valid
(),
Vector
<
uint8_t
>
(),
"Invalid key provided."
);
uint8_t
buf
[
1024
];
size_t
size
;
Vector
<
uint8_t
>
out
;
int
ret
=
mbedtls_pk_encrypt
(
&
(
key
->
pkey
),
p_plaintext
.
ptr
(),
p_plaintext
.
size
(),
buf
,
&
size
,
sizeof
(
buf
),
mbedtls_ctr_drbg_random
,
&
ctr_drbg
);
ERR_FAIL_COND_V_MSG
(
ret
,
out
,
"Error while encrypting: "
+
itos
(
ret
));
out
.
resize
(
size
);
copymem
(
out
.
ptrw
(),
buf
,
size
);
return
out
;
}
Vector
<
uint8_t
>
CryptoMbedTLS
::
decrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_ciphertext
)
{
Ref
<
CryptoKeyMbedTLS
>
key
=
static_cast
<
Ref
<
CryptoKeyMbedTLS
>>
(
p_key
);
ERR_FAIL_COND_V_MSG
(
!
key
.
is_valid
(),
Vector
<
uint8_t
>
(),
"Invalid key provided."
);
ERR_FAIL_COND_V_MSG
(
key
->
is_public_only
(),
Vector
<
uint8_t
>
(),
"Invalid key provided. Cannot decrypt using a public_only key."
);
uint8_t
buf
[
2048
];
size_t
size
;
Vector
<
uint8_t
>
out
;
int
ret
=
mbedtls_pk_decrypt
(
&
(
key
->
pkey
),
p_ciphertext
.
ptr
(),
p_ciphertext
.
size
(),
buf
,
&
size
,
sizeof
(
buf
),
mbedtls_ctr_drbg_random
,
&
ctr_drbg
);
ERR_FAIL_COND_V_MSG
(
ret
,
out
,
"Error while decrypting: "
+
itos
(
ret
));
out
.
resize
(
size
);
copymem
(
out
.
ptrw
(),
buf
,
size
);
return
out
;
}
modules/mbedtls/crypto_mbedtls.h
View file @
8e3f9aa6
...
...
@@ -120,6 +120,8 @@ public:
virtual
Ref
<
X509Certificate
>
generate_self_signed_certificate
(
Ref
<
CryptoKey
>
p_key
,
String
p_issuer_name
,
String
p_not_before
,
String
p_not_after
);
virtual
Vector
<
uint8_t
>
sign
(
HashingContext
::
HashType
p_hash_type
,
Vector
<
uint8_t
>
p_hash
,
Ref
<
CryptoKey
>
p_key
);
virtual
bool
verify
(
HashingContext
::
HashType
p_hash_type
,
Vector
<
uint8_t
>
p_hash
,
Vector
<
uint8_t
>
p_signature
,
Ref
<
CryptoKey
>
p_key
);
virtual
Vector
<
uint8_t
>
encrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_plaintext
);
virtual
Vector
<
uint8_t
>
decrypt
(
Ref
<
CryptoKey
>
p_key
,
Vector
<
uint8_t
>
p_ciphertext
);
CryptoMbedTLS
();
~
CryptoMbedTLS
();
...
...
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