amy/tiny-ECDH-c
1
0
Fork 0
forked from Cyclic0007/tiny-ECDH-c
Code Pull Requests Activity

Update README.md

Browse Source
This commit is contained in:
kokke
2017-12-04 21:43:32 +01:00
committed by GitHub
parent c416bbb78f
commit 360eca3cd8
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
README.md
View File

@@ -25,6 +25,11 @@ See [ecdh_example.c](https://github.com/kokke/tiny-ECDH-c/blob/master/ecdh_examp
There is no built-in protection from out-of-bounds memory access errors as a result of malicious input. The two functions ecdh_shared_secret() and ecdh_generate_keys() expect inputs of a certain length. See [ecdh.h](https://github.com/kokke/tiny-ECDH-c/blob/master/ecdh.h) for clarification.
## TODO:
Make option to use [co-factor variant of ECDH](https://crypto.stackexchange.com/questions/18222/difference-between-ecdh-with-cofactor-key-and-ecdh-without-cofactor-key) instead of normal, for safe non-ephemeral use.
The module allocates no RAM internally and takes up 2.1K ROM when compiled for ARM (1.4K for Thumb but YMMV).
A keypair requires between 63 and 216 bytes of RAM depending on which curve you choose (i.e. how big the underlying base field is).