void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
					 const unsigned long length, const AES_KEY *key,
					 unsigned char *ivec, const int enc)
	{
	unsigned long n;
        unsigned long len;
        aes_block_t tmp, tmp2;
        aes_block_t iv;
        aes_block_t iv2;

	OPENSSL_assert(in && out && key && ivec);
	OPENSSL_assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
	OPENSSL_assert((length%AES_BLOCK_SIZE) == 0);

        len = length / AES_BLOCK_SIZE;
        load_block(iv, ivec);
        load_block(iv2, ivec + AES_BLOCK_SIZE);

	if (AES_ENCRYPT == enc)
		{
		/* XXX: Do a separate case for when in != out (strictly should
		   check for overlap, too) */
		while (len)
			{
                        load_block(tmp, in);
			/*			hexdump(stdout, "in", in, AES_BLOCK_SIZE); */
			/*			hexdump(stdout, "iv", iv, AES_BLOCK_SIZE); */
                        for(n=0 ; n < N_WORDS; ++n)
                                tmp2.data[n] = tmp.data[n] ^ iv.data[n];
			/*			hexdump(stdout, "in ^ iv", out, AES_BLOCK_SIZE); */
			AES_encrypt((unsigned char *)tmp2.data, (unsigned char *)tmp2.data, key);
			/*			hexdump(stdout,"enc", out, AES_BLOCK_SIZE); */
			/*			hexdump(stdout,"iv2", iv2, AES_BLOCK_SIZE); */
			for(n=0 ; n < N_WORDS; ++n)
                                tmp2.data[n] ^= iv2.data[n];
                        store_block(out, tmp2);
			/*			hexdump(stdout,"out", out, AES_BLOCK_SIZE); */
                        iv = tmp2;
                        iv2 = tmp;
			--len;
			in += AES_BLOCK_SIZE;
			out += AES_BLOCK_SIZE;
			}
		memcpy(ivec, iv.data, AES_BLOCK_SIZE);
		memcpy(ivec + AES_BLOCK_SIZE, iv2.data, AES_BLOCK_SIZE);
		}
	else
		{
		while (len)
			{
                        load_block(tmp, in);
                        tmp2 = tmp;
			/*			hexdump(stdout, "in", in, AES_BLOCK_SIZE); */
			/*			hexdump(stdout, "iv2", iv2, AES_BLOCK_SIZE); */
			for(n=0 ; n < N_WORDS; ++n)
                                tmp.data[n] ^= iv2.data[n];
			/*			hexdump(stdout, "in ^ iv2", tmp, AES_BLOCK_SIZE); */
			AES_decrypt((unsigned char *)tmp.data, (unsigned char *)tmp.data, key);
			/*			hexdump(stdout, "dec", out, AES_BLOCK_SIZE); */
			/*			hexdump(stdout, "iv", iv, AES_BLOCK_SIZE); */
			for(n=0 ; n < N_WORDS; ++n)
				tmp.data[n] ^= iv.data[n];
                        store_block(out, tmp);
			/*			hexdump(stdout, "out", out, AES_BLOCK_SIZE); */
                        iv = tmp2;
                        iv2 = tmp;
			--len;
			in += AES_BLOCK_SIZE;
			out += AES_BLOCK_SIZE;
			}
                memcpy(ivec, iv.data, AES_BLOCK_SIZE);
		memcpy(ivec + AES_BLOCK_SIZE, iv2.data, AES_BLOCK_SIZE);
		}
	}