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package uts.sdk.modules.utsXcryptoS
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import java.security.*
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import java.security.spec.X509EncodedKeySpec
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import java.security.spec.PKCS8EncodedKeySpec
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import javax.crypto.*
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import javax.crypto.spec.SecretKeySpec
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import javax.crypto.spec.IvParameterSpec
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import android.util.Base64
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import java.nio.charset.Charset
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import io.dcloud.uts.console
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import java.security.KeyPair
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import java.security.KeyPairGenerator
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import java.security.spec.RSAKeyGenParameterSpec
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import java.security.KeyFactory
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// 定义支持的输出长度枚举
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enum class OutputLength(val length: Int) {
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LENGTH_16(8), // 8 bytes = 16 hex chars
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LENGTH_32(16), // 16 bytes = 32 hex chars
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LENGTH_64(32) // 32 bytes = 64 hex chars
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}
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data class RSARandomKey(val publicKey: String, val privateKey: String)
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class UniversalCryptoHelper {
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companion object {
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// MD5 Encryption ,32位加密
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fun md5(input: String): String {
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val md = MessageDigest.getInstance("MD5")
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val digest = md.digest(input.toByteArray())
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return digest.joinToString("") { "%02x".format(it) }
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}
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// BASE64 Encoding and Decoding
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fun base64Encode(input: String): String = Base64.encodeToString(input.toByteArray(), android.util.Base64.NO_WRAP)
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fun base64Decode(input: String): String = String(Base64.decode(input, Base64.DEFAULT))
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// HMAC with SHA-256
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fun hmacSha256(key: String, data: String): String {
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val secretKey = SecretKeySpec(key.toByteArray(), "HmacSHA256")
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val mac = Mac.getInstance("HmacSHA256")
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mac.init(secretKey)
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val hash = mac.doFinal(data.toByteArray())
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return hash.joinToString("") { "%02x".format(it) }
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}
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// SHA-1 and SHA-256 Hashing
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fun sha1(input: String): String {
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val md = MessageDigest.getInstance("SHA-1")
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val digest = md.digest(input.toByteArray())
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return digest.joinToString("") { "%02x".format(it) }
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}
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fun sha256(input: String): String {
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val md = MessageDigest.getInstance("SHA-256")
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val digest = md.digest(input.toByteArray())
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return digest.joinToString("") { "%02x".format(it) }
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}
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/**
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* 计算SHA-512哈希值
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* @param input 需要计算哈希的字符串
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* @return 哈希值的十六进制字符串
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*/
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fun sha512(input: String): String {
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val md = MessageDigest.getInstance("SHA-512")
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val digest = md.digest(input.toByteArray())
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return digest.joinToString("") { "%02x".format(it) }
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}
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/**
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* 使用HMAC-SHA512算法计算消息认证码
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* @param key 密钥
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* @param data 需要认证的数据
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* @return HMAC值的十六进制字符串
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*/
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fun hmacSha512(key: String, data: String): String {
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val secretKey = SecretKeySpec(key.toByteArray(), "HmacSHA512")
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val mac = Mac.getInstance("HmacSHA512")
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mac.init(secretKey)
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val hmacBytes = mac.doFinal(data.toByteArray())
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return hmacBytes.joinToString("") { "%02x".format(it) }
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}
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fun generateAesKey(key: String, keySize: Int = 16): ByteArray {
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val fixedKey = key.padEnd(keySize, '0') // 填充到 16 字节（128 位）
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return fixedKey.toByteArray().copyOf(keySize) // 截断或扩展为 16 字节
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}
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fun generateDesKey(key: String,keySize: Int = 24): ByteArray {
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// 确保密钥长度为24字节，不足时用0填充，过长时截断
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val keyBytes = key.toByteArray()
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val paddedKey = ByteArray(keySize)
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if (keyBytes.size < keySize) {
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System.arraycopy(keyBytes, 0, paddedKey, 0, keyBytes.size)
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} else {
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System.arraycopy(keyBytes, 0, paddedKey, 0, keySize)
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}
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return paddedKey
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}
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fun generateDesKey2(key: ByteArray,keySize: Int = 24): ByteArray {
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// 确保密钥长度为24字节，不足时用0填充，过长时截断
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val keyBytes = key
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val paddedKey = ByteArray(keySize)
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if (keyBytes.size < keySize) {
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System.arraycopy(keyBytes, 0, paddedKey, 0, keyBytes.size)
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} else {
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System.arraycopy(keyBytes, 0, paddedKey, 0, keySize)
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}
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return paddedKey
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}
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/**
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* 返回编码为base64,cbc或者ecb,填充这pkcs5/pkdcs7,密钥和iv偏移均为16位
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*/
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fun aesEncrypt(input: String, key: String,mode:String,iv: String? = null,keySize:Int?=16): String {
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if(mode=="ECB"){
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val secretKey = SecretKeySpec(generateDesKey(key,keySize?:16), "AES")
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val cipher = Cipher.getInstance("AES/ECB/PKCS5Padding")
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cipher.init(Cipher.ENCRYPT_MODE, secretKey)
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val encrypted = cipher.doFinal(input.toByteArray())
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return Base64.encodeToString(encrypted, Base64.NO_WRAP)
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}
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// cbc
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val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
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val keySpec = SecretKeySpec(generateDesKey(key,keySize?:16), "AES")
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val ivSpecBz = generateDesKey(iv?:"",16)
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val ivSpec = IvParameterSpec(ivSpecBz)
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cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec)
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val encrypted = cipher.doFinal(input.toByteArray())
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return Base64.encodeToString(encrypted, Base64.NO_WRAP)
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}
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fun aesEncrypt2(input: ByteArray, key: ByteArray,mode:String,iv: ByteArray? = null,keySize:Int?=16): ByteArray {
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if(mode=="ECB"){
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val secretKey = SecretKeySpec(generateDesKey2(key,keySize?:16), "AES")
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val cipher = Cipher.getInstance("AES/ECB/PKCS5Padding")
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cipher.init(Cipher.ENCRYPT_MODE, secretKey)
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val encrypted = cipher.doFinal(input)
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return encrypted
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}
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// cbc
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val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
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val keySpec = SecretKeySpec(generateDesKey2(key,keySize?:16), "AES")
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val ivSpecBz = generateDesKey2(iv?:ByteArray(keySize?:16),16)
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val ivSpec = IvParameterSpec(ivSpecBz)
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cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivSpec)
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val encrypted = cipher.doFinal(input)
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return encrypted
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}
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/**
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* 加密文本为base64,cbc或者ecb,填充这pkcs5/pkdcs7,密钥和iv偏移均为16位,返回字符串.
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*/
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fun aesDecrypt(input: String, key: String,mode:String,iv: String? = null,keySize:Int?=16): String {
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if(mode=="ECB"){
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val secretKey = SecretKeySpec(generateDesKey(key,keySize?:16), "AES")
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val cipher = Cipher.getInstance("AES/ECB/PKCS5Padding")
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cipher.init(Cipher.DECRYPT_MODE, secretKey)
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val decrypted = cipher.doFinal(Base64.decode(input, Base64.DEFAULT))
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return String(decrypted)
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}
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// cbc
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val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
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val keySpec = SecretKeySpec(generateDesKey(key,keySize?:16), "AES")
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// val ivSpec = adjustIV(iv?:"":iv,keySize?:16)
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// val ivSpec = IvParameterSpec(iv!!.toByteArray())
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val ivSpecBz = generateDesKey(iv?:"",16)
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val ivSpec = IvParameterSpec(ivSpecBz)
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cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec)
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val decodedBytes = Base64.decode(input, Base64.DEFAULT)
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val decrypted = cipher.doFinal(decodedBytes)
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return String(decrypted)
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}
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fun aesDecrypt2(input: ByteArray, key: ByteArray,mode:String,iv: ByteArray? = null,keySize:Int?=16): ByteArray {
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if(mode=="ECB"){
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val secretKey = SecretKeySpec(generateDesKey2(key,keySize?:16), "AES")
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val cipher = Cipher.getInstance("AES/ECB/PKCS5Padding")
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cipher.init(Cipher.DECRYPT_MODE, secretKey)
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val decrypted = cipher.doFinal(input)
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// val decrypted = cipher.doFinal(Base64.decode(input, Base64.DEFAULT))
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return decrypted
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}
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// cbc
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val cipher = Cipher.getInstance("AES/CBC/PKCS5Padding")
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val keySpec = SecretKeySpec(generateDesKey2(key,keySize?:16), "AES")
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// val ivSpec = adjustIV(iv?:"":iv,keySize?:16)
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// val ivSpec = IvParameterSpec(iv!!.toByteArray())
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val ivSpecBz = generateDesKey2(iv?:ByteArray(keySize?:16),16)
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val ivSpec = IvParameterSpec(ivSpecBz)
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cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec)
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// val decodedBytes = Base64.decode(input, Base64.DEFAULT)
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val decrypted = cipher.doFinal(input)
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return decrypted
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}
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// DES Encryption and Decryption
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fun desEncrypt(input: String, key: String,mode:String,iv: String? = null): String {
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val secretKey = SecretKeySpec(generateDesKey(key), "DESede")
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val cipher: Cipher = when (mode) {
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"ECB" -> Cipher.getInstance("DESede/ECB/PKCS5Padding")
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"CBC" -> Cipher.getInstance("DESede/CBC/PKCS5Padding")
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else -> throw IllegalArgumentException("Unsupported mode: $mode")
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}
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if (mode == "CBC" && iv == null) {
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throw IllegalArgumentException("IV must not be null for CBC mode")
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}
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if (mode == "CBC") {
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val ivSpec = IvParameterSpec(iv!!.toByteArray())
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cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec)
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} else {
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cipher.init(Cipher.ENCRYPT_MODE, secretKey)
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}
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val encrypted = cipher.doFinal(input.toByteArray())
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return Base64.encodeToString(encrypted, android.util.Base64.NO_WRAP)
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}
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fun desDecrypt(input: String, key: String,mode:String,iv: String? = null): String {
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val secretKey = SecretKeySpec(generateDesKey(key), "DESede")
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val cipher: Cipher = when (mode) {
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"ECB" -> Cipher.getInstance("DESede/ECB/PKCS5Padding")
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"CBC" -> Cipher.getInstance("DESede/CBC/PKCS5Padding")
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else -> throw IllegalArgumentException("Unsupported mode: $mode")
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}
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if (mode == "CBC" && iv == null) {
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throw IllegalArgumentException("IV must not be null for CBC mode")
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}
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if (mode == "CBC") {
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val ivSpec = IvParameterSpec(iv!!.toByteArray())
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cipher.init(Cipher.DECRYPT_MODE, secretKey, ivSpec)
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} else {
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cipher.init(Cipher.DECRYPT_MODE, secretKey)
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}
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val decrypted = cipher.doFinal(Base64.decode(input, Base64.DEFAULT))
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return String(decrypted)
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}
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// Convert String to PublicKey
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fun stringToPublicKey(publicKeyStr: String): PublicKey {
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val keyBytes = Base64
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.decode(publicKeyStr.replace("-----BEGIN PUBLIC KEY-----", "")
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.replace("-----END PUBLIC KEY-----", "")
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.replace("\r", "")
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.replace("\n", "")
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.replace("\t", "")
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.replace(" ", "")
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, Base64.DEFAULT
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)
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val keySpec = X509EncodedKeySpec(keyBytes)
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val keyFactory = KeyFactory.getInstance("RSA")
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return keyFactory.generatePublic(keySpec)
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}
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// Convert String to PrivateKey
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fun stringToPrivateKey(privateKeyStr: String): PrivateKey {
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val keyBytes = Base64.decode(privateKeyStr.replace("-----BEGIN PRIVATE KEY-----", "")
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.replace("-----END PRIVATE KEY-----", "")
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.replace("\r", "")
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.replace("\n", "")
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.replace("\t", "")
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.replace(" ", "")
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, Base64.DEFAULT
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)
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val keySpec = PKCS8EncodedKeySpec(keyBytes)
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val keyFactory = KeyFactory.getInstance("RSA")
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return keyFactory.generatePrivate(keySpec)
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}
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fun generateRSAKeyPair(keySize: Int = 2048): RSARandomKey {
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val keyPairGenerator = KeyPairGenerator.getInstance("RSA")
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keyPairGenerator.initialize(RSAKeyGenParameterSpec(keySize, RSAKeyGenParameterSpec.F4))
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val keyPair: KeyPair = keyPairGenerator.generateKeyPair()
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// 将公钥转换为X.509格式
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val x509EncodedPublicKey = keyPair.public.encoded
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val publicKeyString = Base64.encodeToString(x509EncodedPublicKey, Base64.NO_WRAP)
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// 将私钥转换为PKCS#8格式
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val pkcs8EncodedPrivateKey = keyPair.private.encoded
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val privateKeyString = Base64.encodeToString(pkcs8EncodedPrivateKey, Base64.NO_WRAP)
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return RSARandomKey(publicKeyString, privateKeyString)
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}
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// 默认是PKCS1，填充：（OAEP）RSA/ECB/OAEPWithSHA-1AndMGF1Padding或者（PKCS1）RSA/ECB/PKCS1Padding
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fun rsaEncrypt(input: String, publicKeyStr: String): String {
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val publicKey = stringToPublicKey(publicKeyStr)
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val cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding")
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cipher.init(Cipher.ENCRYPT_MODE, publicKey)
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val encrypted = cipher.doFinal(input.toByteArray())
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return Base64.encodeToString(encrypted, Base64.NO_WRAP)
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}
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// input是base64,PKCS1填充生成的加密内容
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fun rsaDecrypt(input: String, privateKeyStr: String): String {
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val privateKey = stringToPrivateKey(privateKeyStr)
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val cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding")
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cipher.init(Cipher.DECRYPT_MODE, privateKey)
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val decrypted = cipher.doFinal(Base64.decode(input, Base64.DEFAULT))
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return String(decrypted)
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}
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fun rc4Init(key: ByteArray): ByteArray {
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val s = ByteArray(256) { it.toByte() }
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var j = 0
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for (i in 0..255) {
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j = (j + s[i].toInt() + key[i % key.size].toInt() and 0xFF) and 0xFF
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val temp = s[i]
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s[i] = s[j]
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s[j] = temp
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}
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return s
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}
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fun rc4Process(data: ByteArray, key: ByteArray, outputLength: OutputLength): ByteArray {
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val s = rc4Init(key)
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val result = ByteArray(outputLength.length) // 使用指定的字节长度
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var i = 0
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var j = 0
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for (n in result.indices) {
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i = (i + 1) and 0xFF
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j = (j + s[i].toInt() and 0xFF) and 0xFF
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val temp = s[i]
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s[i] = s[j]
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s[j] = temp
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val t = (s[i].toInt() + s[j].toInt() and 0xFF) and 0xFF
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val k = s[t].toInt() and 0xFF
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result[n] = if (n < data.size) {
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(data[n].toInt() xor k).toByte()
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} else {
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k.toByte()
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}
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}
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return result
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}
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//输出是hex字符串，密钥是8位字符
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fun rc4Encrypt(data: String, key: String): String {
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val dataBytes = data.toByteArray()
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val keyBytes = key.toByteArray()
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val encrypted = rc4Process(dataBytes, keyBytes, OutputLength.LENGTH_16)
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return encrypted.joinToString("") { "%02x".format(it) }
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}
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//输入encryptedHex是hex字符串,返回是string，密钥是8位字符
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fun rc4Decrypt(encryptedHex: String, key: String): String {
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val encryptedBytes = encryptedHex.chunked(2)
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.map { it.toInt(16).toByte() }
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.toByteArray()
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val keyBytes = key.toByteArray()
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val decrypted = rc4Process(encryptedBytes, keyBytes, OutputLength.LENGTH_16)
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return decrypted.toString(Charset.defaultCharset()).trim('\u0000')
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}
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}
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}
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