Method, apparatus and system for resistance to side channel attacks on random number generators

A random number generator (RNG) resistant to side channel attacks, comprising:

• a life random number generator (LRNG) having a random data output, life seed input, and a life true input;
• an activation pseudo random number generator (APRNG) having an activation output connected to the life seed input and providing a life seed to the life seed input, the APRNG further having an activation seed input, and an activation true input;
• an input seed memory connected to the activation seed input and further connected through a feedback connection from the activation output so that the life seed is stored in the input seed memory to be used by the APRNG as the activation seed input at a next startup cycle;
• and
• a true random number generator (TRNG) having an output connected to the life true input and the activation true input, the TRNG providing a common entropy signal to the life true input and the activation true input.

A method for generating random numbers which is resistant to side channel attacks, comprising the steps of:

• providing a random number generator having an activation pseudo random number generator (APRNG) with two inputs, a second random number generator having two inputs and an input seed memory which provides a seed input to the APRNG and includes a feedback connection from the APRNG output so that a next seed is stored in the input seed memory to be used as a seed by the APRNG at a next startup cycle;
• combining a seed stored in the input seed memory with a user input data to create a next seed output from the APRNG;
• and
• combining the next seed and same user input data in the second random number generator to output random bits.