Fixed errors in documentation

Anand · Anand · commit 10f8feba3451 · 2021-11-11T09:30:41.000+05:30
diff --git a/README.md b/README.md
@@ -20,7 +20,7 @@ Table of Contents
 About
 =====
 
-`Varuh` is a command line password manager that allows you to keep your passwords and other sensitive data using the power of the shell and Unix. It uses `sqlite` databases to store the information and encrypts it with symmetric block encryption ciphers like [AES-256](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) and [XChaCha20-Poly1305](https://www.cryptopp.com/wiki/XChaCha20) .
+`Varuh` is a command line password manager that allows you to keep your passwords and other sensitive data using the power of the shell and Unix. It uses `sqlite` databases to store the information and encrypts it with symmetric encryption ciphers like [AES-256](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) and [XChaCha20-Poly1305](https://www.cryptopp.com/wiki/XChaCha20) .
 
 The name [Varuh](https://www.wordsense.eu/varuh/#Slovene) means *guardian* or *protector* in the Slovene language.
 
@@ -34,7 +34,7 @@ If you ask - `"Why a rewrite, why not contribute to the original repo ?"`, it is
 2. `ylva` does not have a proper configuration file that keeps with the freedesktop specifications.
 3. The fact that ylva keeps decrypted databases on disk when in regular use without an automatic {decrypt-encrypt}-on-use option was a problem. If I encrypt the database, I have to keep decrypting it to use the program which is a problem. Hence the `encrypt_on` flag was added to `varuh` (see below).
 4. C is a venerable language but this is 2021 and I would rather program (and contribute) in a modern system programming language like `Go` or `Rust` which takes care of the memory handling tasks and leaves me to focus on the application code. Also I felt it is easier to get contributors to a project if it is in one of these languages as a lot of the Gen Z programmers don't know C. You will appreciate this more if you look at an open source repo written in C/C++ and find that 30% of all code are operations allocating/de-allocating memory.
-5. Support for more ciphers and crypto systems - `Varuh` already supports the `XChacha20-Poly1305` cipher and uses `Argon2` (Argon2i variant) instead of the older `pbkdf2` as the key derivation function. OpenPGP encryption is in the pipeline. 
+5. Support for more ciphers and crypto systems - `Varuh` already supports the `XChacha20-Poly1305` stream cipher and uses `Argon2` (Argon2i variant) instead of the older `pbkdf2` as the key derivation function. OpenPGP encryption is in the pipeline. 
 
 Building the code
 =================
@@ -110,11 +110,13 @@ The command line flags are grouped into `Edit/Create`, `Find/List` and `Help` ac
 Encryption and Security
 =======================
 
-Varuh gives the option of two block ciphers - AES (default) and XChacha20-Poly1305.
+Varuh gives the option of two symmetric ciphers - AES (default) and XChacha20-Poly1305.
 
-AES is supported with 256-bit key size for encryption. It uses [Argon2](https://en.wikipedia.org/wiki/Argon2) with 32MB memory and 4 threads as the key derivation function with a random cryptographic salt of 128 bit size.
+AES is a block cipher supported with 256-bit key size for encryption and is the current standard for symmetric encryption ciphers.
 
-XChacha20-Poly1305 is a block cipher with a longer nonce (192 bits) which makes the cipher more resistant to timing attacks than AES-GCM. It also supports 256-bit key size.
+XChacha20-Poly1305 is a stream cipher with a longer nonce (192 bits) which makes the cipher more resistant to timing attacks than AES-GCM. It also supports 256-bit key size.
+
+The key derivation uses [Argon2](https://en.wikipedia.org/wiki/Argon2) with 32MB memory and 4 threads with a random cryptographic salt of 128 bit size for both ciphers.
 
 Databases are created and decrypted with owner `rw` mode (0600). This makes sure the databases are read/write - able only by the owner.
 
