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feat(EncoderUtils): support zeropadding

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Xwite
2022-05-27 12:45:29 +08:00
parent d6a7cc743a
commit e35b592691
1 changed files with 7 additions and 9 deletions
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16
app/src/main/java/io/legado/app/utils/EncoderUtils.kt
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@@ -2,9 +2,9 @@ package io.legado.app.utils
import android.util.Base64
import java.security.spec.AlgorithmParameterSpec
import javax.crypto.Cipher
import javax.crypto.spec.IvParameterSpec
import javax.crypto.spec.SecretKeySpec
import cn.hutool.crypto.symmetric.SymmetricCrypto
/**
* transformations https://developer.android.google.cn/reference/kotlin/javax/crypto/Cipher?hl=en
@@ -328,16 +328,14 @@ object EncoderUtils {
): ByteArray? {
return if (data == null || data.isEmpty() || key == null || key.isEmpty()) null
else {
//hutool support zeropadding
val keySpec = SecretKeySpec(key, algorithm)
val cipher = Cipher.getInstance(transformation)
val mode = if (isEncrypt) Cipher.ENCRYPT_MODE else Cipher.DECRYPT_MODE
if (iv == null || iv.isEmpty()) {
cipher.init(mode, keySpec)
} else {
val params: AlgorithmParameterSpec = IvParameterSpec(iv)
cipher.init(mode, keySpec, params)
var params: AlgorithmParameterSpec? = null
if (iv != null && !iv.isEmpty()) {
params = IvParameterSpec(iv)
}
cipher.doFinal(data)
val symmetricCrypto = SymmetricCrypto(transformation, keySpec, params)
return if (isEncrypt) symmetricCrypto.encrypt(data) else symmetricCrypto.decrypt(data)
}
}