Dear Shariful,
Could you please try the patch from
https://github.com/openssl/openssl/pull/16734?
On Wed, Sep 29, 2021 at 6:59 PM Dmitry Belyavsky <beld...@gmail.com> wrote:
> Dear Shariful,
>
> Yes. You have to provide all the RSA_METHO functions your app is going to
> use.
>
> On Tue, Sep 28, 2021 at 5:46 PM Shariful Alam <dipto...@gmail.com> wrote:
>
>> Dear Dmitry,
>> Thank you for your response.
>>
>> Here is the stack trace
>>
>>
>> I was trying using gdb to debug the error. I get to until
>> RSA_public_encrypt(), then if I step in, I get the segmentation fault,
>>
>> ==================================================================================================
>> bt
>> #0 0x0000000000000000 in ?? ()
>> #1 0x00007ffff77dbfc0 in RSA_public_encrypt (flen=72, from=0x6d8860 "Hi.
>> This is a test message. Hope to see some performace gain with this.\nme",
>> to=0x6d8a70 "x\353;\367\377\177", rsa=0x6d8540, padding=1) at
>> crypto/rsa/rsa_crpt.c:30
>> #2 0x00000000004479a7 in rsautl_main (argc=0, argv=0x7fffffffde10) at
>> apps/rsautl.c:248
>> #3 0x00000000004379fa in do_cmd (prog=0x6d5930, argc=11,
>> argv=0x7fffffffde10) at apps/openssl.c:564
>> #4 0x0000000000436e4d in main (argc=11, argv=0x7fffffffde10) at
>> apps/openssl.c:183
>>
>> ==================================================================================================
>>
>> To my understanding, instead of pointing to the default encryption
>> function, it is pointing to 0x0000000000000000, thus causing the
>> segmentation fault.
>>
>
>
>
>>
>> Thanks,
>> Shariful
>>
>>
>>
>> On Tue, Sep 28, 2021 at 1:40 AM Dmitry Belyavsky <beld...@gmail.com>
>> wrote:
>>
>>> Dear Shariful,
>>>
>>> Could you please also provide a stack trace of your segfault?
>>>
>>> On Tue, Sep 28, 2021 at 1:06 AM Shariful Alam <dipto...@gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>> I have the following simple RSA engine code from *e_dasync.c. * Following
>>>> code compiles and works. Until now, I was under the impression that if I do
>>>> not supply an alternative method in function *bind_dasync(), the *engine
>>>> will use the default method. However, it doesn't seem to be the case. If I
>>>> comment out line 37 and try to perform an encryption operation with the
>>>> following command,
>>>>
>>>> *"openssl rsautl -encrypt -inkey public.pem -pubin -in msg.txt -out
>>>> msg.enc -engine rsa-engine-new" *
>>>>
>>>> I get segmentation errors.
>>>>
>>>> Can anyone please tell me why this is happening?
>>>>
>>>>
>>>> ==============================================================================
>>>>
>>>> 1. /* Engine Id and Name */
>>>> 2. static const char *engine_rsa_id = "rsa-engine-new";
>>>> 3. static const char *engine_rsa_name = "RSA engine for testing";
>>>> 4.
>>>> 5. // data encryption function
>>>> 6. static int eng_rsa_pub_enc(int flen, const unsigned char *from,
>>>> 7. unsigned char *to, RSA *rsa, int
>>>> padding) {
>>>> 8. printf("Encryption\n");
>>>> 9. return 0;
>>>> 10. }
>>>> 11.
>>>> 12. // signature verify
>>>> 13. static int eng_rsa_pub_dec(int flen, const unsigned char *from,
>>>> unsigned char *to, RSA *rsa, int padding){
>>>> 14. printf("Signature verify:\n");
>>>> 15. return 0;
>>>> 16. }
>>>> 17.
>>>> 18. // signature
>>>> 19. static int eng_rsa_priv_enc(int flen, const unsigned char
>>>> *from, unsigned char *to, RSA *rsa, int padding){
>>>> 20. printf("Signature:\n");
>>>> 21. return 0;
>>>> 22. }
>>>> 23.
>>>> 24. // data decryption
>>>> 25. static int eng_rsa_priv_dec(int flen, const unsigned char
>>>> *from, unsigned char *to, RSA *rsa, int padding){
>>>> 26. printf("Decryption\n");
>>>> 27. return 0;
>>>> 28. }
>>>> 29.
>>>> 30.
>>>> 31. static RSA_METHOD *test_rsa_method = NULL;
>>>> 32.
>>>> 33.
>>>> 34. static int bind_dasync(ENGINE *e){
>>>> 35. /* Setup RSA_METHOD */
>>>> 36. if ((test_rsa_method = RSA_meth_new("Test RSA method", 0))
>>>> == NULL
>>>> 37. // || RSA_meth_set_pub_enc(test_rsa_method,
>>>> eng_rsa_pub_enc) == 0
>>>> 38. || RSA_meth_set_pub_dec(test_rsa_method,
>>>> eng_rsa_pub_dec) == 0
>>>> 39. || RSA_meth_set_priv_enc(test_rsa_method,
>>>> eng_rsa_priv_enc) == 0
>>>> 40. || RSA_meth_set_priv_dec(test_rsa_method,
>>>> eng_rsa_priv_dec) == 0
>>>> 41. ) {
>>>> 42.
>>>> 43. return 0;
>>>> 44. }
>>>> 45.
>>>> 46. /* Ensure the dasync error handling is set up */
>>>> 47.
>>>> 48. if (!ENGINE_set_id(e, engine_rsa_id)
>>>> 49. || !ENGINE_set_name(e, engine_rsa_name)
>>>> 50. || !ENGINE_set_RSA(e, test_rsa_method)
>>>> 51. ) {
>>>> 52. return 0;
>>>> 53. }
>>>> 54. return 1;
>>>> 55. }
>>>> 56.
>>>> 57. static int bind_helper(ENGINE *e, const char *id){
>>>> 58. if (!bind_dasync(e)){
>>>> 59. printf("2_Error: Inside Bind helper\n");
>>>> 60. return 0;
>>>> 61. }
>>>> 62. return 1;
>>>> 63. }
>>>> 64.
>>>> 65. IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
>>>> 66. IMPLEMENT_DYNAMIC_CHECK_FN()
>>>>
>>>>
>>>> ==============================================================================
>>>>
>>>> Regards,
>>>> Shariful Alam
>>>>
>>>>
>>>
>>> --
>>> SY, Dmitry Belyavsky
>>>
>>
>
> --
> SY, Dmitry Belyavsky
>
--
SY, Dmitry Belyavsky
