github
/
eladmin
mirror of https://github.com/elunez/eladmin
1
0
Fork 0
Code Issues Releases Wiki Activity

bugfix: #627 (#634) 

Emmm...解密是没有长度限制的
pull/654/head
Tsln 2021-04-27 14:29:33 +08:00 committed by GitHub
parent 19214fd592
commit f207d003c2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
eladmin-common/src/main/java/me/zhengjie/utils/RsaUtils.java
View File

@ -81,7 +81,7 @@ public class RsaUtils {
PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec); PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
Cipher cipher = Cipher.getInstance("RSA"); Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, publicKey); cipher.init(Cipher.DECRYPT_MODE, publicKey);
byte[] result = doLongerCipherFinal(cipher, Base64.decodeBase64(text)); byte[] result = doLongerCipherFinal(Cipher.DECRYPT_MODE, cipher, Base64.decodeBase64(text));
return new String(result); return new String(result);
} }
@ -99,7 +99,7 @@ public class RsaUtils {
PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec); PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
Cipher cipher = Cipher.getInstance("RSA"); Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, privateKey); cipher.init(Cipher.ENCRYPT_MODE, privateKey);
byte[] result = doLongerCipherFinal(cipher, text.getBytes()); byte[] result = doLongerCipherFinal(Cipher.ENCRYPT_MODE, cipher, text.getBytes());
return Base64.encodeBase64String(result); return Base64.encodeBase64String(result);
} }
@ -117,7 +117,7 @@ public class RsaUtils {
PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec5); PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec5);
Cipher cipher = Cipher.getInstance("RSA"); Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privateKey); cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] result = doLongerCipherFinal(cipher, Base64.decodeBase64(text)); byte[] result = doLongerCipherFinal(Cipher.DECRYPT_MODE, cipher, Base64.decodeBase64(text));
return new String(result); return new String(result);
} }
@ -134,19 +134,23 @@ public class RsaUtils {
PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec2); PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec2);
Cipher cipher = Cipher.getInstance("RSA"); Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey); cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] result = doLongerCipherFinal(cipher, text.getBytes()); byte[] result = doLongerCipherFinal(Cipher.ENCRYPT_MODE, cipher, text.getBytes());
return Base64.encodeBase64String(result); return Base64.encodeBase64String(result);
} }
private static byte[] doLongerCipherFinal(Cipher cipher, byte[] source) throws Exception { private static byte[] doLongerCipherFinal(int opMode,Cipher cipher, byte[] source) throws Exception {
ByteArrayOutputStream out = new ByteArrayOutputStream();
if (opMode == Cipher.DECRYPT_MODE) {
out.write(cipher.doFinal(source));
} else {
int offset = 0; int offset = 0;
int totalSize = source.length; int totalSize = source.length;
ByteArrayOutputStream out = new ByteArrayOutputStream();
while (totalSize - offset > 0) { while (totalSize - offset > 0) {
int size = Math.min(1024 / 8 - 11, totalSize - offset); int size = Math.min(cipher.getOutputSize(0) - 11, totalSize - offset);
out.write(cipher.doFinal(source, offset, size)); out.write(cipher.doFinal(source, offset, size));
offset += size; offset += size;
} }
}
out.close(); out.close();
return out.toByteArray(); return out.toByteArray();
} }