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[utils/sampling]: removed panics & removed PRNG in ckks.Encoder

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This commit is contained in:
Jean-Philippe Bossuat
2023-10-27 10:48:41 +02:00
parent fcae9808a3
commit 4f6ea2ded4
2 changed files with 3 additions and 24 deletions
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8
utils/sampling/prng.go
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@@ -2,6 +2,7 @@ package sampling
import (
"crypto/rand"
"fmt"
"io"
"golang.org/x/crypto/blake2b"
@@ -37,7 +38,7 @@ func NewPRNG() (*KeyedPRNG, error) {
prng := new(KeyedPRNG)
key := make([]byte, 64)
if _, err := rand.Read(key); err != nil {
panic("crypto rand error")
return fmt.Errorf("crypto rand error: %w", err)
}
prng.key = key
prng.xof, err = blake2b.NewXOF(blake2b.OutputLengthUnknown, key)
@@ -55,10 +56,7 @@ func (prng *KeyedPRNG) Key() (key []byte) {
// Read reads bytes from the KeyedPRNG on sum.
func (prng *KeyedPRNG) Read(sum []byte) (n int, err error) {
if n, err = prng.xof.Read(sum); err != nil {
panic(err)
}
return n, nil
return prng.xof.Read(sum)
}
// Reset resets the PRNG to its initial state.