I am new to this so go easy on me. I had this dropped in my lap and have
limited info but here is what I have.
I was sent 2 files and a partial java code that another company uses to decrypt.
import java.io.InputStream;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
byte[] encryptedData = (byte[])msg.getBody().get();
byte[] decryptionKey =
readFileContents("/keyfile_3des");
final SecretKey key
= new SecretKeySpec(decryptionKey, "DESede");
_log.debug("Creating Cipher ...");
final IvParameterSpec iv
= new IvParameterSpec(new byte[8]);
final Cipher decipher =
Cipher.getInstance("DESede/CBC/PKCS5Padding");
decipher.init(Cipher.DECRYPT_MODE, key, iv);
_log.debug("Performing Decryption ...");
final byte[] decryptedData =
decipher.doFinal(encryptedData);
I am trying to get the same result with decrypting in openssl
$ openssl enc -d -kfile keyfile_3des.txt -in encrypt.20120109.160000.txt -out
test1.txt -des-ede-cbc -nosalt
I thought that the default padding for openssl was pkcs5 but I get what seems
to me to be a padding error
bad decrypt
140735237683644:error:06065064:digital envelope
routines:EVP_DecryptFinal_ex:bad decrypt:evp_enc.c:467:
It will run without error if I use -nopad but does not decrypt the file. Also
no error with -des-ede-cfb. I am not all that familiar with java and don't know
how to finish the partial jumbled code that I was sent either. I would greatly
appreciate any help with openssl or the partial java code.
Philip Landreth
[email protected]
[email protected]
