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I was very upset that I wasn't told I'd have to pay until after I'd edited a very long file, but customer service gave me 30 days free when I brought this to their attention.
2014-05-18
kind of difficult to understand..sometimes it would not fill out the form and sometimes it would, then go back to the first signature and had to keep confirming.
2017-01-17
Its "the perfect" software. Easy to use without any guess work. It's hard to find a product as simple as this one in today's market. Thumbs up to the folks who created this.
2018-05-22
honestly was harder to understand the first time, but I came back a few weeks later and in just that time it had become much more intuitive and to me seems to flow perfectly!
2018-06-27
In general its an effective tool. I don't like that it will NOT allow you to leave spaces (eg. 1.5/2.0) spaces been typed words. So everthing looks to compact and scrunched in - definatelt a flaw!
2018-08-02
Great App
I have used this product six times since installing 2 days ago. This is the best PDF app I have seen in a long time. I will highly recommend it.
2020-02-11
User interface can be better
This is a pretty good website to merge pdfs. Overall has everything you need. I do believe the user interface can be easier to use for those who aren't as tech savvy.
2022-03-03
I immediately was connected to a support person via chat, and he walked me through what I need and was very professional and supportive. I truly had a great experience.
2021-10-20
Trial Offer
We were reviewing this application and thought we had agreed to the trial offer. Actually, we didn't want the trial offer. When sending an email to their support team, they immediately responded and took care of our request, no questions asked.
2020-09-16
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How do you make a round key in AES?
Derive the set of round keys from the cipher key. Initialize the state array with the block data (plaintext). Add the initial round key to the starting state array. Perform nine rounds of state manipulation.
What are the steps in each round of AES algorithm?
To review the overall structure of AES and to focus particularly on the four steps used in each round of AES: (1) byte substitution, (2) shift rows, (3) mix columns, and (4) add round key. Python and Perl implementations for creating the lookup tables for the byte substitution steps in encryption and decryption.
How do you get AES key?
Generate a random 128-bit key (k1), a random 128-bit IV, and a random salt (64 bits is probably sufficient). Use PBKDF2 to generate a 256-bit key from your password and the salt, then split that into two 128-bit keys (k2, k3). Use k2 to AES encrypt k1 using the random IV.
Is AES a Faster cipher?
Well, AES is not a Faster cipher because it's a substitution-permutation network instead. In a Faster cipher, the round function is not necessarily invertible (DES's round function is not), but in AES, like any substitution-permutation network, the rounds are invertible. This is a property of the construction itself.
How many keys are possible in the AES scheme?
There are three variants of AES based on different key sizes (128, 192, and 256 bits). Above we described the 128-bit version of the AES key schedule. All three variants of AES use a 128-bit block size, only the key sizes differ.
How many possible keys are available in the 10 bit system?
A 6 bit key has 64 combinations, a 7 bit key has 128 combinations, and so forth. A 10 bit key has a thousand combinations, a 20 bit key has a million combinations, a 30 bit key has a BILLION combinations.
How many round keys are generated in the AES algorithm?
AES has 10 rounds for 128-bit keys, 12 rounds for 192-bit keys, and 14 rounds for 256-bit keys.
How many transformations are there in each version of AES?
We now turn to a discussion of each of the four transformations used in AES. For each stage, we describe the forward (encryption) algorithm, the inverse (decryption) algorithm, and the rationale for the stage. We now turn to a discussion of each of the four transformations used in AES.
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