[GitHub] [incubator-milagro-crypto-c] GuillaumeCisco edited a comment on issue #38: Python wrappers
GuillaumeCisco edited a comment on issue #38: Python wrappers
URL:
https://github.com/apache/incubator-milagro-crypto-c/issues/38#issuecomment-521329526
What I tried:
Using the file `test_pair_FP256BN.c` which use `CURVE_Order_FP256BN`.
Creating the .so (from python wrapper generated directory) using:
`gcc -g -I../../include -I../../../../include -fPIC -Wall -Wextra
../../test/test_pair_FP256BN.c -shared -o ./test_pair_FP256BN.so`
With a file named test_pair_FP256BN.py:
```
import cffi
ffi = cffi.FFI()
ffi.cdef("""
int main();
""")
lib = ffi.dlopen("./rom.so")
lib.main()
```
Then:
```
$> python
Python 2.7.15+ (default, Nov 27 2018, 23:36:35)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import test_pair_FP256BN
Traceback (most recent call last):
File "", line 1, in
ImportError: ./test_pair_FP256BN.so: undefined symbol: CURVE_Order_FP256BN
```
There is something I'm not doing correctly...
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[GitHub] [incubator-milagro-crypto-c] GuillaumeCisco edited a comment on issue #38: Python wrappers
GuillaumeCisco edited a comment on issue #38: Python wrappers
URL:
https://github.com/apache/incubator-milagro-crypto-c/issues/38#issuecomment-521321028
Thanks.
I need a little help on this one.
If I create rom.c like:
```c
#include
#include
#include
#include
#include
int main()
{
BIG_256_56 q2;
BIG_256_28 r2;
printf("BLS381\n");
BIG_256_56_rcopy(q2, Modulus_FP256BN);
printf("q (381) = 0x");
BIG_256_56_output(q2);
printf("\n");
BIG_256_28_rcopy(r2 ,CURVE_Order_FP256BN);
printf("r (257) = 0x");
}
```
Then how do I wrap it with cffi?
If I write something like:
```python
import cffi
import platform
ffi = cffi.FFI()
ffi.cdef("""
int main();
""")
if (platform.system() == 'Windows'):
libamcl_wcc_FP256BN = ffi.dlopen("libamcl_wcc_FP256BN.dll")
libamcl_core = ffi.dlopen("libamcl_core.dll")
elif (platform.system() == 'Darwin'):
libamcl_wcc_FP256BN = ffi.dlopen("libamcl_wcc_FP256BN.dylib")
libamcl_core = ffi.dlopen("libamcl_core.dylib")
else:
libamcl_wcc_FP256BN = ffi.dlopen("libamcl_wcc_FP256BN.so")
libamcl_core = ffi.dlopen("libamcl_core.so")
libamcl_core.main()
```
It won't work, as there is no link between rom.c and `libamcl_core`.
I should create a .so file from the rom.c, right?
I have no knowledge in cffi and will learn how to use it.
But a little help would be great ;)
Also is it possible to simply export constant from a C code for importing it
after from python?
Thanks
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[GitHub] [incubator-milagro-crypto-c] GuillaumeCisco edited a comment on issue #38: Python wrappers
GuillaumeCisco edited a comment on issue #38: Python wrappers URL: https://github.com/apache/incubator-milagro-crypto-c/issues/38#issuecomment-521240128 Quick question, is `bls_ZZZ.py.in` a generated file? What `.py.in` stands for? could we generate a `rom_ZZZ.py.in` file? This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services - To unsubscribe, e-mail: issues-unsubscr...@milagro.apache.org For additional commands, e-mail: issues-h...@milagro.apache.org
[GitHub] [incubator-milagro-crypto-c] GuillaumeCisco edited a comment on issue #38: Python wrappers
GuillaumeCisco edited a comment on issue #38: Python wrappers URL: https://github.com/apache/incubator-milagro-crypto-c/issues/38#issuecomment-521240128 Quick question, is `bls_ZZZ.py.in` generated files? What `.py.in` stands for? could we generate a `rom_ZZZ.py.in` file? This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services - To unsubscribe, e-mail: issues-unsubscr...@milagro.apache.org For additional commands, e-mail: issues-h...@milagro.apache.org
