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skibulk
skibulk
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Is there an asymmetric cryptographically secure pseudo random number generator in which the public key only goes backward? For example, I'd like to generate 5,000 digits, then provide the public key and RNG state to another party. Then they'd generate the same digits backward from 5,000 to 1. The second party should not be able to calculate the digits from 5,001 onward.

Edit: Here's a working demo of DannyNiu's RSA approach.

Is there an asymmetric cryptographically secure pseudo random number generator in which the public key only goes backward? For example, I'd like to generate 5,000 digits, then provide the public key and RNG state to another party. Then they'd generate the same digits backward from 5,000 to 1. The second party should not be able to calculate the digits from 5,001 onward.

Is there an asymmetric cryptographically secure pseudo random number generator in which the public key only goes backward? For example, I'd like to generate 5,000 digits, then provide the public key and RNG state to another party. Then they'd generate the same digits backward from 5,000 to 1. The second party should not be able to calculate the digits from 5,001 onward.

Edit: Here's a working demo of DannyNiu's RSA approach.

Source Link
skibulk
skibulk
  • 133
  • 4

Asymmetric CSPRNG where the public key only works backward

Is there an asymmetric cryptographically secure pseudo random number generator in which the public key only goes backward? For example, I'd like to generate 5,000 digits, then provide the public key and RNG state to another party. Then they'd generate the same digits backward from 5,000 to 1. The second party should not be able to calculate the digits from 5,001 onward.