gistfile1.txt

# Initialize new Triple DES, CBC cipher with PKCS5 padding
cipher = Cipher.new

# Begin
cipher.encrypt

# Pass in encryption key, as given: "...rbtrj"
cipher.key = "KEY"

# Pass in initialization vector, as given: "...gdf="
cipher.iv = "IV"

# Encrypt the timestamp alone
encrypted = cipher.update("20110323102422")

# Finish the encryption
encrypted << cipher.final

# Return the base 64 encoded result
Base64.encode64(encrypted)