(Ruby) Hash the Contents of a String (SHA256 and other hash algorithms)

Demonstrates how to hash the contents of a string using SHA256, SHA384, SHA512, MD2, MD5, HAVAL, RIPEMD, etc.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example requires the Chilkat Crypt API to have been previously unlocked.
# See Unlock Chilkat Crypt for sample code.

crypt = Chilkat::CkCrypt2.new()

# Choose the hash algorithm.
# Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
crypt.put_HashAlgorithm("sha256")

# The byte representation of the string matters when hashing. 
# Tell Chilkat that we want to use the utf-8 byte representation.
crypt.put_Charset("utf-8")

hashBytes = Chilkat::CkByteData.new()
success = crypt.HashString("They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.",hashBytes)

# Let's examine the hash as a hex string.
sb = Chilkat::CkStringBuilder.new()
sb.AppendEncoded(hashBytes,"hex")
print "SHA256 hash = " + sb.getAsString() + "\n";