This is the openssl command line that I am using
To encrypt:
openssl enc -aes-256-cbc -K
000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F -iv
00112233445566778899AABBCCDDEEFF -e -in input.txt -out output.enc
To Decrypt:
openssl enc -aes-256-cbc -K
000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F -iv
00112233445566778899AABBCCDDEEFF -d -in output.enc -out decrypt.txt
My code is simple:
void TestEncrypt()
{
unsigned char aes_key[] =
{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F
};
unsigned char aes_iv[] =
{
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF
};
AES_KEY key;
string sInput;
cout << " enter string (size < 128) : ";
cin >> sInput;
cout << "input is " << sInput << endl;
int inlen = sInput.size();
unsigned char pIV[16];
unsigned char pIn[128];
unsigned char pOut[128];
memset(pOut, 0, 128);
memset(pIn, 0, 128);
memcpy(pIn, sInput.c_str(), inlen);
AES_set_encrypt_key(aes_key, 256, &key);
//AES_ecb_encrypt(input, pOut, &key, AES_ENCRYPT);
memcpy(pIV, aes_iv, 16);
AES_cbc_encrypt(pIn, pOut, inlen, &key, pIV, AES_ENCRYPT);
cout << "encrypted output is: ";
for (unsigned int i = 0; i < 128; ++i)
{
cout << hex << showbase << pOut[i];
}
cout << endl;
AES_set_decrypt_key(aes_key, 256, &key);
//AES_ecb_encrypt(pOut, pIn, &key, AES_DECRYPT);
memcpy(pIV, aes_iv, 16);
memset(pIn, 0, 128);
AES_cbc_encrypt(pOut, pIn, inlen, &key, pIV, AES_DECRYPT);
cout << "decrypted output is: ";
for (unsigned int i = 0; i < 128; ++i)
{
cout << hex << showbase << pIn[i];
}
cout << endl;
cout << "done testing" << endl;
}
On Thu, Sep 3, 2009 at 2:07 PM, Hazel John<hazeljj...@gmail.com> wrote:
> I am specifying the key and IV and using the same hex based string for both.
>
> On Thu, Sep 3, 2009 at 2:02 PM, Victor
> Duchovni<victor.ducho...@morganstanley.com> wrote:
>> On Thu, Sep 03, 2009 at 01:51:10PM -0500, Hazel John wrote:
>>
>>> Hi,
>>> I need to encrypt simple strings to readable strings using the openssl
>>> command line (opessl enc with the -a option to return readable
>>> strings) and decrypt this in my code (c++/linux). I tried both the low
>>> level aes and evp functions and couldn't get the results to match. Is
>>> there a default padding used by the openssl command line? I tried
>>> using the cbc alogorithm and padded it with the null char and thought
>>> I can encrypt/decrypt correctly using openssl command line or my code,
>>> I cannot get the encrypted output to match. I am using BIO to base64
>>> encode/decode in my program and that part works well. I am trying to
>>> match the encrypted output from my program to the encrypted output
>>> using the same cipher with openssl command line and cannot get a
>>> match.
>>
>> Are you using the same password-based key derivation function with the
>> same "salt" to derive the encryption key and IV? The "magic" string
>> and salt are prepended to the output of "openssl enc".
>>
>> --
>> Viktor.
>> ______________________________________________________________________
>> OpenSSL Project http://www.openssl.org
>> User Support Mailing List openssl-us...@openssl.org
>> Automated List Manager majord...@openssl.org
>>
>
______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager majord...@openssl.org
