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@ -1,13 +1,9 @@ |
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package io.legado.app.utils |
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import android.util.Base64 |
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import cn.hutool.crypto.symmetric.SymmetricCrypto |
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import java.security.spec.AlgorithmParameterSpec |
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import javax.crypto.spec.IvParameterSpec |
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import javax.crypto.spec.SecretKeySpec |
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/** |
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* transformations https://developer.android.google.cn/reference/kotlin/javax/crypto/Cipher?hl=en |
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* 编码工具 escape base64 |
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*/ |
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@Suppress("unused") |
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object EncoderUtils { |
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@ -42,302 +38,4 @@ object EncoderUtils { |
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return Base64.encodeToString(str.toByteArray(), flags) |
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} |
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//////////AES Start |
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/** |
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* Return the Base64-encode bytes of AES encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *AES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the Base64-encode bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptAES2Base64( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "AES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return Base64.encode(encryptAES(data, key, transformation, iv), Base64.NO_WRAP) |
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} |
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/** |
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* Return the bytes of AES encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *AES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptAES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "AES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "AES", transformation!!, iv, true) |
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} |
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/** |
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* Return the bytes of AES decryption for Base64-encode bytes. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *AES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption for Base64-encode bytes |
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*/ |
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@Throws(Exception::class) |
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fun decryptBase64AES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "AES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return decryptAES(Base64.decode(data, Base64.NO_WRAP), key, transformation, iv) |
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} |
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/** |
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* Return the bytes of AES decryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *AES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption |
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*/ |
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@Throws(Exception::class) |
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fun decryptAES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "AES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "AES", transformation, iv, false) |
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} |
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//////////DES Start |
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/** |
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* Return the Base64-encode bytes of DES encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the Base64-encode bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptDES2Base64( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "DES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return Base64.encode(encryptDES(data, key, transformation, iv), Base64.NO_WRAP) |
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} |
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/** |
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* Return the bytes of DES encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptDES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "DES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "DES", transformation!!, iv, true) |
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} |
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/** |
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* Return the bytes of DES decryption for Base64-encode bytes. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption for Base64-encode bytes |
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*/ |
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@Throws(Exception::class) |
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fun decryptBase64DES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "DES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return decryptDES(Base64.decode(data, Base64.NO_WRAP), key, transformation, iv) |
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} |
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/** |
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* Return the bytes of DES decryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DES/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption |
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*/ |
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@Throws(Exception::class) |
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fun decryptDES( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "DES/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "DES", transformation, iv, false) |
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} |
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//////////DESede Start |
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/** |
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* Return the Base64-encode bytes of DESede encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DESede/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the Base64-encode bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptDESede2Base64( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "DESede/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return Base64.encode(encryptDESede(data, key, transformation, iv), Base64.NO_WRAP) |
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} |
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/** |
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* Return the bytes of DESede encryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DESede/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES encryption |
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*/ |
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@Throws(Exception::class) |
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fun encryptDESede( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String? = "DESede/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "DESede", transformation!!, iv, true) |
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} |
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/** |
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* Return the bytes of DESede decryption for Base64-encode bytes. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DESede/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption for Base64-encode bytes |
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*/ |
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@Throws(Exception::class) |
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fun decryptBase64DESede( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "DESede/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return decryptDESede(Base64.decode(data, Base64.NO_WRAP), key, transformation, iv) |
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} |
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/** |
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* Return the bytes of DESede decryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, *DESede/CBC/PKCS5Padding*. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @return the bytes of AES decryption |
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*/ |
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@Throws(Exception::class) |
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fun decryptDESede( |
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data: ByteArray?, |
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key: ByteArray?, |
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transformation: String = "DESede/ECB/PKCS5Padding", |
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iv: ByteArray? = null |
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): ByteArray? { |
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return symmetricTemplate(data, key, "DESede", transformation, iv, false) |
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} |
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/** |
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* Return the bytes of symmetric encryption or decryption. |
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* |
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* @param data The data. |
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* @param key The key. |
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* @param algorithm The name of algorithm. |
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* @param transformation The name of the transformation, |
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* 加密算法/加密模式/填充类型, <i>DES/CBC/PKCS5Padding</i>. |
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* @param iv The buffer with the IV. The contents of the |
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* buffer are copied to protect against subsequent modification. |
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* @param isEncrypt True to encrypt, false otherwise. |
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* @return the bytes of symmetric encryption or decryption |
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*/ |
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@Suppress("SameParameterValue") |
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@Throws(Exception::class) |
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private fun symmetricTemplate( |
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data: ByteArray?, |
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key: ByteArray?, |
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algorithm: String, |
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transformation: String, |
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iv: ByteArray?, |
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isEncrypt: Boolean |
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): ByteArray? { |
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return if (data == null || data.isEmpty() || key == null || key.isEmpty()) null |
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else { |
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//hutool support zeropadding |
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val keySpec = SecretKeySpec(key, algorithm) |
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var params: AlgorithmParameterSpec? = null |
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if (iv != null && !iv.isEmpty()) { |
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params = IvParameterSpec(iv) |
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} |
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val symmetricCrypto = SymmetricCrypto(transformation, keySpec, params) |
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if (isEncrypt) symmetricCrypto.encrypt(data) else symmetricCrypto.decrypt(data) |
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} |
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} |
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} |
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