Here are some free to use Online Security Tools which offers you the facility to encrypt and decrypt any text or Generate Random passwords,MD5 Hash,MD4 Hash or SHA1 Hash.
Tools
ASCII Encryption A very simple encryption method that uses random values for each character. Interestingly, you can encrypt the same string as many times as you want and the result will always be different.
MD4 Hash Generator Message-Digest 4 is a widely-used cryptographic hash function with a 128-bit hash value.
MD5 Hash Generator Message-Digest 5 is a widely-used cryptographic hash function with a 128-bit hash value.
Password Generator This Online Password Generator allows the creation of multiple random passwords of a given complexity. The combination of lower and upper case letters, numbers and punctuation symbols makes the passwords highly secure and difficult to guess or crack.
SHA1 Hash Generator The SHA produces a 160-bit representation of the message called the MessageDigest.
Password Strength Checker This online Password strength checker will gauge your password and give it a score based on how good of a password it is.
Anti-Spam Email Encoder This free online tool allows a e-mail address to be protected from basic "spam harvesters" that scour the web looking for e-mail addresses to add to spam lists.