Hello OpenSSL mail list, I am trying to write a program to decrypt .odt documents using OpenSSL. When testing the code I wrote, I can decrypt any of the test strings I encrypt, but when I try to decrypt one of the encrypted files from an .odt document it only spits out gibberish. Following the specifications for .odt documents I do the following:
unsigned char* digest; unsigned char* md = new unsigned char[DIGEST_SIZE]; //DIGEST_SIZE = 20 digest = SHA1(password, passwordSize, md); //password being an unsigned char array, and passwordSize being a long int //salt being and PBKDF2_key being unsigned char arrays of size 16, ITERATION_COUNT being 1024, and SALT_SIZE and KEY_SIZE being 16. if(md != 0) PKCS5_PBKDF2_HMAC_SHA1((char*)md, DIGEST_SIZE, salt, SALT_SIZE, ITERATION_COUNT, KEY_SIZE, PBKDF2_key); else PKCS5_PBKDF2_HMAC_SHA1((char*)digest, DIGEST_SIZE, salt, SALT_SIZE, ITERATION_COUNT, KEY_SIZE, PBKDF2_key); int num = 0; BF_KEY key; BF_set_key(&key, KEY_SIZE, PBKDF2_key); //with in and out being unsigned char arrays of size length and iVec being a unsigned char array of size 8. // in being a buffer of encrypted data, and out being the destination for the decrypted data BF_cfb64_encrypt(in, out, length, &key, iVec, &num, BF_DECRYPT); Can anybody see a problem with this code? When I use this to decrypt an encrypted file from the .odt document, using the salt and initialization vector from the manifest file (after un-base64ing them) and all I get is garbage values. Thank you for your time and help. P.S. I wrote my program using C++ and compiled under Slackware 12.1 if it matters . -- -John Young ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
