Bcrypt and mbed

Question

Bcrypt and mbed

Yavor Krasyovski 0

I've ran into an issue with Brypt and I could use some help.

Currently our settup for comunicating with our server is the following: the server uses MbedTLS for encryption and decryption and BCrypt on the user. Our keys are PEM formatted.

The issue is that messages encrypted by a public key via BCrypt cannot be decoded by MbedTLS. The process works if we use either of the libraries for encrypt/decrypt both.

As far as I can tell all algorithm settings are the same between the libraries, the padding is the same, the hash is the same.

A strange thing I ran into is that the encrypted messages by BCrypt are not 256 byte sized, but apart from that everything looks as expected.

Are there any known issues with communication between the two libraries? Are there any steps that you can recommend for debugging the issue?

Anonymous

2023-06-23T09:17:43.5233333+00:00

Could you please tell me if you are developing a UWP application? What is the two libraries? It is better to share the link about the libraries so we could understand your question better.
Yavor Krasyovski 0 Reputation points

2023-06-29T15:03:47.91+00:00

No it's not UWP.

The libraries in question are MbedTLS and BCrypt.

https://github.com/Mbed-TLS/mbedtls

https://learn.microsoft.com/en-us/windows/win32/api/bcrypt/nf-bcrypt-bcryptencrypt
Yavor Krasyovski 0 Reputation points

2023-07-12T08:34:54.4+00:00

Can I offer any additional information.