大佬教程收集整理的这篇文章主要介绍了java – 在Android上使用AES加密文件，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
public static void encryptfile(String path,String Pass) throws IOException,NoSuchAlgorithmException,NoSuchPaddingException,InvalidKeyException { FileInputStream fis = new FileInputStream(path); FiLeoutputStream fos = new FiLeoutputStream(path.concat(".crypt")); byte[] key = (salt + Pass).getBytes("UTF-8"); messageDigest sha = messageDigest.geTinstance("SHA-1"); key = sha.digest(key); key = Arrays.copyOf(key,16); SecretKeySpec sks = new SecretKeySpec(key,"AES"); Cipher cipher = Cipher.geTinstance("AES"); cipher.init(Cipher.ENCRYPT_MODE,sks); CipherOutputStream cos = new CipherOutputStream(fos,cipher); int b; byte[] d = new byte[8]; while((b = fis.read(d)) != -1) { cos.write(d,b); } cos.flush(); cos.close(); fis.close(); } public static void decrypt(String path,InvalidKeyException { FileInputStream fis = new FileInputStream(path); FiLeoutputStream fos = new FiLeoutputStream(path.replace(".crypt","")); byte[] key = (salt + Pass).getBytes("UTF-8"); messageDigest sha = messageDigest.geTinstance("SHA-1"); key = sha.digest(key); key = Arrays.copyOf(key,"AES"); Cipher cipher = Cipher.geTinstance("AES"); cipher.init(Cipher.DECRYPT_MODE,sks); CipherInputStream cis = new CipherInputStream(fis,cipher); int b; byte[] d = new byte[8]; while((b = cis.read(d)) != -1) { fos.write(d,b); } fos.flush(); fos.close(); cis.close(); }@H_673_3@目前,Salt和@R_616_5747@d是静态的,为了测试目的不要改变.一半的时间仍然会出错.@H_450_5@
有没有人有什么想法为什么会发生这种情况？我一直在寻找,我已经找到了几件事情尝试,没有一个工作.我已经考虑了以下解决方案的以下问题：@H_450_5@
Android decryption: Error while finalizing cipher@H_450_5@
last block incomplete with CipherInputStream/CipherOutputStream,even with padding AES/CBC/PKCS5Padding@H_450_5@
Encryption error on Android 4.2@H_450_5@
Decrypting error : “no iv set when one expected”@H_450_5@
How to handle “last block incomplete in decryption”@H_450_5@
Encryption and decryption of image file@H_450_5@
Tips on encryption/decryption of images in java using AES@H_450_5@
任何帮助是极大的赞赏！我想我只是想念一些简单的东西@H_450_5@
更新！@H_450_5@
当盐是正确的时候.当我删除盐,问题解决了…有一点挖掘,结果盐通过是问题,但因为盐是一个字节[],而且是一个字符串.我把salt改成了String,然后用salt.concat(pass),问题解决了！@H_450_5@
package test; import java.io.FileInputStream; import java.io.FiLeoutputStream; import java.io.IOException; import java.security.InvalidKeyException; import java.security.messageDigest; import java.security.NoSuchAlgorithmException; import java.util.Arrays; import javax.crypto.Cipher; import javax.crypto.CipherInputStream; import javax.crypto.CipherOutputStream; import javax.crypto.NoSuchPaddingException; import javax.crypto.spec.SecretKeySpec; public class TESTCrypt{ private static final String salt = "t784"; private static final String crypt@R_616_5747@d = "873147cbn9x5'2 79'79314"; private static final String fileToBeCrypted = "c:\\Temp\\sampleFile.conf"; private static final String fileToBeDecrypted = "c:\\Temp\\sampleFile.conf.crypt"; private static final String fileDecryptedOutput = "c:\\Temp\\sampleFile.conf.decrypted"; public static void main(String[] args) throws Exception { for (int i=0; i<100; i++) { encryptfile(fileToBeCrypted,crypt@R_616_5747@d); decrypt(fileToBeDecrypted,crypt@R_616_5747@d,fileDecryptedOutput); System.out.println(i); } } public static void encryptfile(String path,String @R_616_5747@d) throws IOException,InvalidKeyException { FileInputStream fis = new FileInputStream(path); FiLeoutputStream fos = new FiLeoutputStream(path.concat(".crypt")); byte[] key = (salt + @R_616_5747@d).getBytes("UTF-8"); messageDigest sha = messageDigest.geTinstance("SHA-1"); key = sha.digest(key); key = Arrays.copyOf(key,16); SecretKeySpec sks = new SecretKeySpec(key,"AES"); Cipher cipher = Cipher.geTinstance("AES"); cipher.init(Cipher.ENCRYPT_MODE,sks); CipherOutputStream cos = new CipherOutputStream(fos,cipher); int b; byte[] d = new byte[8]; while((b = fis.read(d)) != -1) { cos.write(d,b); } cos.flush(); cos.close(); fis.close(); } public static void decrypt(String path,String @R_616_5747@d,String outPath) throws IOException,InvalidKeyException { FileInputStream fis = new FileInputStream(path); FiLeoutputStream fos = new FiLeoutputStream(outPath); byte[] key = (salt + @R_616_5747@d).getBytes("UTF-8"); messageDigest sha = messageDigest.geTinstance("SHA-1"); key = sha.digest(key); key = Arrays.copyOf(key,"AES"); Cipher cipher = Cipher.geTinstance("AES"); cipher.init(Cipher.DECRYPT_MODE,sks); CipherInputStream cis = new CipherInputStream(fis,cipher); int b; byte[] d = new byte[8]; while((b = cis.read(d)) != -1) { fos.write(d,b); } fos.flush(); fos.close(); cis.close(); } }@H_673_3@我可以迭代多次没有错误！
我正在使用Oracle JDK 1.8,但是以1.7兼容模式运行.@H_450_5@希望这能帮助你.@H_450_5@
再见皮耶罗@H_450_5@
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