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Last activity 2017-11-15 14:51:49 +0200 by cwerther

Building micro-ecc with SES, SDK14.1

Hi, I'm trying to build the secure_dfu_ble_s132_pca10040_debug project and apparently need to add the mico-ecc library. The SDK instructions for building the library call out " 4.9-2015-q3-update of the GCC compiler toolchain for ARM". I'm using Segger Embedded ... (more)

404
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1
vote
5
answers
Last activity 2017-09-22 10:36:35 +0100 by audiya

Installing micro-ecc issue

Hi,

I am following below step for Installing micro_ecc_lib_nrf52.lib.

  1. Install version 4.9-2015-q3-update of the GCC compiler toolchain for ARM. You can use ARM's Launchpad to find the toolchain for your operating system. - DONE

  2. Make sure that make ...

(more)

78
views
1
vote
2
answers
Last activity 2017-09-08 18:59:11 +0200 by Krzysztof Zaraska

nrf_crypto_sign() fails plus not enough randomness

Problem: nrf_crypto_sign() fails with NRF_ERROR_INTERNAL. Observed in SDK 12.3.0 on NRF51422. This probably applies to SDK 14.0 when using micro-ecc backend, as the root cause of the bug is still there (see below).

Cause: nrf_crypto_sign() uses ecc_p256_sign ... (more)

80
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no
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no
answers
Last activity 2017-09-07 23:34:01 +0200 by XploD

Micro-ecc library won't compile

Hi,

I'm trying to get BLE pairing example to work. I downloaded the missing micro-ecc library and I encountered this problem: https://github.com/kmackay/micro-ecc/...

So I've compiled this library with Bash on Ubuntu on Windows and ... (more)

97
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1
vote
2
answers
Last activity 2017-08-19 04:27:58 +0100 by Thomas

SDK 14, micro-ecc build_all.sh does not work on Unix/OSX

Hi all, this is an answer for those who see this when using SDK14 (and maybe even before):

As one tries to use the micro-ecc library when creating DFU applications, on Unix or MacOS, one will see an error when ... (more)

79
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no
votes
1
answer
Last activity 2017-07-14 14:33:17 +0100 by Aleksander Nowakowski

Fail in verifying micro ECC signature in Android

In order to prevent communication from middle-man attack, I append the signature after ECDH publickey. However, though I get the correct share secret by ECDH, I fail in verifying the micro ecc signature in Android studio, and 52832 also fails ... (more)

78
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2
votes
1
answer
Last activity 2017-07-06 14:01:39 +0200 by Scribble

micro-ecc (crypto) generating different shared secret to Node.js

Hi there,

I'm currently using micro-ecc on an nRF52 compiled using Nordic's makefiles and implementing the secp256r1 curve. I'm mirroring this in Node.js using the Crypto library.

I generated two sets of pub/priv keys on ... (more)

326
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no
votes
3
answers
Last activity 2017-07-03 13:07:33 +0200 by Eric

How to use micro-ecc without loading micro_ecc_lib_nrf52.lib?

The micro-ecc works well when I load micro_ecc_lib_nrf52.lib in keil5. However, the author suggest copying the uECC files into the project, so I include uEcc.h but fail in compling. I get some error information,such as: ............\external\micro-ecc ... (more)

146
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3
votes
2
answers
Last activity 2017-03-21 17:34:10 +0100 by Eric

micro ecc create wrong publickey in windows

My pc server should send information to nrf52832 by ECDH, then I create a dll file from micro-ecc. However,the result in windows is not the same as the result in nrf52832. The following is some test code in VS2013 ... (more)

144
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4
votes
1
answer
Last activity 2017-03-03 09:34:16 +0100 by Eric

micro-ecc can't work with android studio

I have to exchange information with smart cellphone. My 10040 board create a pair of key by micro-ecc and transfer the public key to the cellphone. However, the cellphone shows errors like this: the point is not in the curve ... (more)

588
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no
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no
answers
Last activity 2016-12-20 10:59:19 +0200 by Newbie

How to add micro-ecc library? [closed]

I want to add micro-ecc library for compiling bootloader secure code. I tried as mentioned on https://infocenter.nordicsemi.com/ind... . I am getting error as attached. I am facing problem in cloning the github library in my folder. Can ... (more)

405
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2
votes
2
answers
Last activity 2016-11-10 16:17:20 +0100 by syntroniks

ECC wrong public key is generated

Hi, I want to produce a shared secret key between a Smartphone and a NRF52 in order to encrypt data later with AES-128 (example of key sharing: here).

To do that i need to implement a ECDH (Elliptic Curve Diffie ... (more)

347
views
no
votes
1
answer
Last activity 2016-11-07 15:12:24 +0100 by Hung Bui

micro ecc compilation error

I am using SDK 12.0.0 and Nrf51 ship.I was trying to compile micro-ecc library in eclipse using make file.I have cloned the micro ecc library from this link.I am using the makefile from the folder ... (more)

901
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no
votes
1
answer
Last activity 2016-09-08 15:41:49 +0200 by Ole Bauck flag of Norway

Cannot create micro-ecc lib

Hi,

This is very newbie, and I am stuck.

I am following to the letter the instructions to create the micro-ecc according to this instructions.

The problem, and it can be due to the fact that I do everything with ... (more)

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