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add note about RNG

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Pavol Rusnak 2013-08-17 14:28:45 +02:00
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@ -4,3 +4,10 @@ MicroECDSA
Heavily optimized ECDSA (secp256k1) signer for embedded devices.
Distibuted under MIT License.
Notes
-----
a) random generator in rand.c is using stdlib's rand() function.
you should replace this code with one that uses a hardware random
generator of your microcontroller.