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ReferenceswolfSSL - Embedded SSL Library → wolfCrypt → Diffie-hellman keyexchange compatible with openssl
Hello, I want to use wolfSSL on my STM32 F4 device and openssl on my Windows application.
Is it possible to perform a Diffie-Hellman key exchange between both?
wc_DhGenerateKeyPair/wc_DhAgree uses a byte array, can I export or import to a format supported by both openSSL and wolfSSL? Thanks for your advice.
Hi Leroyk2,
Thanks for contacting wolfSSL with your questions! Could you tell us a little about what you are working on and the end-goals of the project?
We do interoperability testing with OpenSSL on a nightly basis so the short answer is yes we are confident the two can perform a TLS connection using a DH key exchange mechanism.
It appears though your work may be a little lower level, just using the crypto parts of the two libraries and not necessarily the SSL/TLS level is that correct?
Warm Regards,
Kaleb
I need to know if I could exchange a diffie hellman public key from wolfssl to openssl
wc_DhGenerateKeyPair(&key, &rng, priv, &privSz, pub, &pubSz);
is the output of pub compatible with openssl bignum?
device x = will be used openssl DH_compute_key
device y = will be used wolfssl wc_DhAgree
Leroyk2,
Could you tell us a little about what you are working on and the end-goals of the project?
The output of pub is an unsigned char array iE the raw hex.
You could convert that to Big Number format with the function wolfSSL_BN_hex2bn
Warm Regards,
Kaleb
wolfSSL - Embedded SSL Library → wolfCrypt → Diffie-hellman keyexchange compatible with openssl
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