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Public TEA

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This commit is contained in:
Him188 2019-11-08 20:50:56 +08:00
parent 41b2948832
commit 3eca212bf6
1 changed files with 15 additions and 30 deletions
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45
mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/TEA.kt
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@ -25,11 +25,9 @@ class DecryptionFailedException : Exception()
* @param key 长度至少为 16
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun ByteArray.encryptBy(key: ByteArray, length: Int = this.size): ByteArray = TEA.encrypt(this, key, sourceLength = length)
fun ByteArray.encryptBy(key: ByteArray, length: Int = this.size): ByteArray = TEA.encrypt(this, key, sourceLength = length)
@PublishedApi
internal fun ByteArray.encryptBy(key: DecrypterByteArray, length: Int = this.size): ByteArray = TEA.encrypt(this, key.value, sourceLength = length)
fun ByteArray.encryptBy(key: DecrypterByteArray, length: Int = this.size): ByteArray = TEA.encrypt(this, key.value, sourceLength = length)
/**
* 通过 [String.hexToBytes] 将 [keyHex] 转为 [ByteArray] 后用它解密 [this].
@ -38,8 +36,7 @@ internal fun ByteArray.encryptBy(key: DecrypterByteArray, length: Int = this.siz
* @param keyHex 长度至少为 16 bytes
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun ByteArray.encryptBy(keyHex: String, length: Int = this.size): ByteArray = encryptBy(keyHex.hexToBytes(withCache = true), length = length)
fun ByteArray.encryptBy(keyHex: String, length: Int = this.size): ByteArray = encryptBy(keyHex.hexToBytes(withCache = true), length = length)
/**
* 在 [ByteArrayPool] 缓存 [this], 然后使用 [key] 加密.
@ -48,8 +45,7 @@ internal fun ByteArray.encryptBy(keyHex: String, length: Int = this.size): ByteA
* @consumer 由于缓存需要被回收, 需在方法内执行解密后明文的消耗过程
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal inline fun ByteReadPacket.encryptBy(key: ByteArray, offset: Int = 0, length: Int = remaining.toInt() - offset, consumer: (ByteArray) -> Unit) {
inline fun ByteReadPacket.encryptBy(key: ByteArray, offset: Int = 0, length: Int = remaining.toInt() - offset, consumer: (ByteArray) -> Unit) {
ByteArrayPool.useInstance {
this.readFully(it, offset, length)
consumer(it.encryptBy(key, length = length))
@ -67,8 +63,7 @@ internal inline fun ByteReadPacket.encryptBy(key: ByteArray, offset: Int = 0, le
* @param key 固定长度 16
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun ByteArray.decryptBy(key: ByteArray, length: Int = this.size): ByteArray =
fun ByteArray.decryptBy(key: ByteArray, length: Int = this.size): ByteArray =
TEA.decrypt(checkDataLengthAndReturnSelf(length), key, sourceLength = length)
/**
@ -79,8 +74,7 @@ internal fun ByteArray.decryptBy(key: ByteArray, length: Int = this.size): ByteA
* @param key 长度至少为 16
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun ByteArray.decryptBy(key: IoBuffer, length: Int = this.size): ByteArray {
fun ByteArray.decryptBy(key: IoBuffer, length: Int = this.size): ByteArray {
checkDataLengthAndReturnSelf(length)
return ByteArrayPool.useInstance { keyBuffer ->
key.readFully(keyBuffer, 0, key.readRemaining)
@ -95,8 +89,7 @@ internal fun ByteArray.decryptBy(key: IoBuffer, length: Int = this.size): ByteAr
* @param keyHex 长度至少为 16 bytes
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun ByteArray.decryptBy(keyHex: String, length: Int = this.size): ByteArray = decryptBy(keyHex.hexToBytes(withCache = true), length = length)
fun ByteArray.decryptBy(keyHex: String, length: Int = this.size): ByteArray = decryptBy(keyHex.hexToBytes(withCache = true), length = length)
/**
* 在 [ByteArrayPool] 缓存 [this], 然后使用 [key] 解密.
@ -104,8 +97,7 @@ internal fun ByteArray.decryptBy(keyHex: String, length: Int = this.size): ByteA
* @param key 长度至少为 16
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun IoBuffer.decryptBy(key: ByteArray, offset: Int = 0, length: Int = readRemaining - offset): ByteArray {
fun IoBuffer.decryptBy(key: ByteArray, offset: Int = 0, length: Int = readRemaining - offset): ByteArray {
return ByteArrayPool.useInstance {
this.readFully(it, offset, length)
it.checkDataLengthAndReturnSelf(length)
@ -119,8 +111,7 @@ internal fun IoBuffer.decryptBy(key: ByteArray, offset: Int = 0, length: Int = r
* @param keyHex 长度至少为 16
* @throws DecryptionFailedException 解密错误时
*/
@PublishedApi
internal fun IoBuffer.decryptBy(keyHex: String, offset: Int = 0, length: Int = readRemaining - offset): ByteArray =
fun IoBuffer.decryptBy(keyHex: String, offset: Int = 0, length: Int = readRemaining - offset): ByteArray =
decryptBy(keyHex.hexToBytes(withCache = true), offset = offset, length = length)
@ -128,29 +119,23 @@ internal fun IoBuffer.decryptBy(keyHex: String, offset: Int = 0, length: Int = r
// region ByteReadPacket extension
@PublishedApi
internal fun ByteReadPacket.decryptBy(key: ByteArray): ByteReadPacket = decryptAsByteArray(key) { data -> ByteReadPacket(data, 0) }
fun ByteReadPacket.decryptBy(key: ByteArray): ByteReadPacket = decryptAsByteArray(key) { data -> ByteReadPacket(data, 0) }
@PublishedApi
internal fun ByteReadPacket.decryptBy(key: IoBuffer): ByteReadPacket = decryptAsByteArray(key) { data -> ByteReadPacket(data, 0) }
fun ByteReadPacket.decryptBy(key: IoBuffer): ByteReadPacket = decryptAsByteArray(key) { data -> ByteReadPacket(data, 0) }
@PublishedApi
internal fun ByteReadPacket.decryptBy(keyHex: String): ByteReadPacket = decryptBy(keyHex.hexToBytes())
fun ByteReadPacket.decryptBy(keyHex: String): ByteReadPacket = decryptBy(keyHex.hexToBytes())
@PublishedApi
internal inline fun <R> ByteReadPacket.decryptAsByteArray(key: ByteArray, consumer: (ByteArray) -> R): R =
inline fun <R> ByteReadPacket.decryptAsByteArray(key: ByteArray, consumer: (ByteArray) -> R): R =
ByteArrayPool.useInstance {
val length = remaining.toInt()
readFully(it, 0, length)
consumer(it.decryptBy(key, length))
}.also { close() }
@PublishedApi
internal inline fun <R> ByteReadPacket.decryptAsByteArray(keyHex: String, consumer: (ByteArray) -> R): R =
inline fun <R> ByteReadPacket.decryptAsByteArray(keyHex: String, consumer: (ByteArray) -> R): R =
this.decryptAsByteArray(keyHex.hexToBytes(), consumer)
@PublishedApi
internal inline fun <R> ByteReadPacket.decryptAsByteArray(key: IoBuffer, consumer: (ByteArray) -> R): R =
inline fun <R> ByteReadPacket.decryptAsByteArray(key: IoBuffer, consumer: (ByteArray) -> R): R =
ByteArrayPool.useInstance {
val length = remaining.toInt()
readFully(it, 0, length)