CSPRNGs are not true randomness. They are PRNGs (with a seed and all), but with cryptographic guarantees. That also means, as a corollary, that they are gener

CSPRNGs are not true randomness. They are PRNGs (with a seed and all), but with cryptographic guarantees. That also means, as a corollary, that they are generally good RNGs. TRNG appliances can get very high throughput, too.