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catch temporary encrypted zip errors

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This commit is contained in:
Evan Su 2025-04-18 15:42:42 -04:00
parent ca0a74f99d
commit 22a1118f01
1 changed files with 17 additions and 5 deletions
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22
src/Picocrypt.go
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@ -1194,12 +1194,24 @@ func work() {
var tempZipCipherW *chacha20.Cipher
var tempZipCipherR *chacha20.Cipher
var tempZipInUse bool = false
func() {
func() { // enclose to keep out of parent scope
key, nonce := make([]byte, 32), make([]byte, 12)
rand.Read(key)
rand.Read(nonce)
tempZipCipherW, _ = chacha20.NewUnauthenticatedCipher(key, nonce)
tempZipCipherR, _ = chacha20.NewUnauthenticatedCipher(key, nonce)
if n, err := rand.Read(key); err != nil || n != 32 {
panic(errors.New("fatal crypto/rand error"))
}
if n, err := rand.Read(nonce); err != nil || n != 12 {
panic(errors.New("fatal crypto/rand error"))
}
if bytes.Equal(key, make([]byte, 32)) || bytes.Equal(nonce, make([]byte, 12)) {
panic(errors.New("fatal crypto/rand error")) // this should never happen but be safe
}
var errW error
var errR error
tempZipCipherW, errW = chacha20.NewUnauthenticatedCipher(key, nonce)
tempZipCipherR, errR = chacha20.NewUnauthenticatedCipher(key, nonce)
if errW != nil || errR != nil {
panic(errors.New("fatal chacha20 init error"))
}
}()
// Combine/compress all files into a .zip file if needed