Hi, I’m looking into Algorand and the uses in Iot. The platform that I have is quite limited and can only compile code for C/C++. In this case, what is the best approach to realise a transaction on a test node? What are the minimal API’s that I shall need to port? Thanks

There are many c++ libraries that support REST calls. You could just use one of those and call the Algorand specific REST APIs - Algorand Developer Docs

You may also want to look at AlgoDuino: https://algoduino.com/ It’s in C++ for ESP8266 and ESP32 , so it may or may not be useful for you.

Hi, I had a look at these, thanks. REST API are ok but what about the lower level stuff such as signing a wallet, generating a mnemonic etc.?

For that, you would first need to find a crypto library that supports the required operations (essentially SHA512/256 - not just SHA256 -, and ED25519 signatures). The official code ( GitHub - algorand/go-algorand: Algorand's official implementation in Go. ) uses libsodium . To see how accounts are g…

Ok, great. I have used this one in the past: https://tls.mbed.org/api/modules.html https://tls.mbed.org/api/annotated.html Looks like it covers them. I have also ported duktape - Javascript Engine so I could make a port for JavaScript. Hopefully I can contribute it to the community.

I’m not sure they support SHA-512/256. SHA-512/256 is SHA-512 with a difference initialization vector and truncated to 256 bits. It might not be too difficult to tweak the code of SHA-512 to get SHA-512/256 You don’t need SHA-512/256 for normal signing/key generation. But you need it to: compu…

Ok, thanks for the clarification. I will search a bit more on the SHA-512/256 and try and find something suitable.

Hi, So far I have created a llibrary for TweetNacl and used parts of the sodium lib for sha512/256. From sodium: crypto_hash,crypto_auth, crypto_verify and created a customised random. That should be enough for now right? Nikolas

If you want to be able to send transaction, you’ll also need crypto_sign. Regarding randomness generation, this is usually a vert complex operation especially on IoT. One issue is that it’s almost impossible to test it is done properly and errors can be catastrophic (see e.g., Debian -- Security I…

Thanks for following up. I was planning to use a hardware random generator but it seem that it’s not exposed on the ARMv7 platform (need to ask R&D that work with Qualcomm). I’m thinking of using other physical sources such as RF front end etc. to create random generation as a source. Need to look…

Minimal Iot platform

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jannotti March 2, 2021, 1:04am 13

This is a first cut at a c++ sdk that does signing and such. Still very untested.

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Minimal Iot platform

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