Random number generator
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Random numbers are important in generating encryption keys and salt values. In this case OpenSSL generates a random number (in a Base64 format) for a given number of bytes.
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Outline
For example, to generate a 512 byte random number:
openssl rand -base64 512 Bytes: 512 -------------- Base64 format: YwHjU3kQ8xPqyMPRRU3UHTbdbOwKAnE5TCPwiUt0zez/ecAziGhX2MxVNXIoIlbw DdafrPW9fBUgDNfXPCcugkWHvoPjUdvl+bDGDLDVqSE+m7jZoUooqSBWcoBnrAmL ANcjCfGvtKjeepoffrUFac1QR6EYzO+V4l8TTYsNVKymkwlgjbIJ7f7B6DdLHRpE S8NhE5A/nmPi9G34/qUiV2rbBLfK93RwBaovuue3sgnvjZlCjytHZIO/ebz8Fd0O w2wsLgcOQLr0/vClgu6OTNbHzilTsfNXS7dIcvi9uGPsd8BByy4oKYKKnix4V4qL WkVwv52cPTieYCg4qR38/u5RLpT5/eTaEst18MC5H5kVH3+Wid8+/oux/cc0Pemb yKKlSM9KV6MyxPlK9KMvbODMUYM9BfcMeJikoUcBP06hlIGWjoAgwY+H/YPfXMOm vHBq0Q3uPxkFh0jvKqYt8Soi5b3UgFxmcIIsdzihnkc/TJCF9ezfxajgnehbsoEf bvZjl0MuKvtZPJ5tFFoNg6yyblH7dK22UiTBWDd0sJPDLmfFSpdzzAXYJXrwtuIB 2vN/WkVKbVu4fBClwL6PZOoCoLN3bWr+lvLDRyA07QHbcZjNIOjOV9F1aEarR4c2 0nGXtk9dY9rNknePdVJfDeCyQzR4GFqtyatAzWDfRRM=