srscAssignment01

COMMANDS

Just for ease of copy-pasting.

• StreamServer
  java StreamServer ./movies/monsters.dat localhost 9999 \

To compile server:
javac StreamServer.java UtilsServer.java CryptoException.java PrintStatsServer.java \

• Box
  java Box \

To compile box:
javac Box.java UtilsBox.java CryptoException.java PrinStatsBox.java \

• openssl
  In order to do hashes the command is:
  openssl dgst -sha256 <file> with hash function
  openssl dgst -sha1 -hmac <mackey> <file> for hMac \

NOTE

Previous config:
localdelivery:224.7.7.7:7777
remote:228.10.10.10:9999 \

• Can't decrypt/encrypt with RC6/CTR/NoPadding, not available
• Can't check integrity with SHA256 it has to be written as SHA-256
• Can't check integrity with HMAC-SHA1 it has to be written as HmacSHA1
• Is the Box supposed to send every stream at the same time?
• The range of multicast is can be found at this link http://www.tcpipguide.com/free/t_IPMulticastAddressing.htm

TODO

Landmarks

• Prototype

---

Box

• Check why can't receive anything in box if address different from localhost
• Support for multicast
• Support for unicast
• Parser config.properties
• Parser box-cryptoconfig
• PBE for box-cryptoconfig
• PBE with other algorithms
• Implement different streams and boxes
• Statistics
• Refactor in different classes
• Do separate config for key PBE
• If integrity = NULL return

---

StreamServer

• Parser movies.cryptoconfig
• Decrypt movies from movies.cryptoconfing
• Check integrity after decrypting
• Statistics
• Delete movie after decrypted
• Can't encrypt/decrypt with RC6/CTR/NoPadding (chekc JCE)
• Refactor in different classes
• PBE on configuration
• Separate config for key PBE
• If integrity = NULL return

---

Info dump

openssl dgst -sha256 *
SHA2-256(cars.dat)= 7857c02e633edd92df139699d6f2e992062654fef85f7b47d1121037d466cc1f
SHA2-256(cars.dat.encrypted)= 82d5b11e1cdd26aa4d08639dc7caa27aeb5d143fd8dc4bd021881f66d16d955c
SHA2-256(cars.dat.encrypted.dec)= 7857c02e633edd92df139699d6f2e992062654fef85f7b47d1121037d466cc1f
SHA2-256(monsters.dat)= 97fccad5f83caabf499eaf71896fe1d67dca2ad9aa9bdc490d369e27ebd63751
SHA2-256(README)= f10fb370afa90a2a035b14e08c22afbcffacb3f7f2a5b3c013f917a2228c6b27
SHA2-256(world.mp4)= 7baad60681f0e480c1e3726ede92f77851fad54642e5524a4247f3c56c483503 \

openssl dgst -sha1 -mac HMAC -macopt hexkey:<key> *
HMAC-SHA1(cars.dat)= 9d404a7f8a7cb2c539d23577bf3fc63282d0c5c2
HMAC-SHA1(cars.dat.encrypted)= 097c200709c94fe24bf9f4cf6170c8c9be1c6060
HMAC-SHA1(cars.dat.encrypted.dec)= 9d404a7f8a7cb2c539d23577bf3fc63282d0c5c2
HMAC-SHA1(monsters.dat)= 7290bd13488321195cf729642dd60e12f94c3ca2
HMAC-SHA1(README)= dc0d9943ca99b00d525c379a2e79db3ab50e49a1
HMAC-SHA1(world.mp4)= 993dd7c7d0898777d27b4b3281b977002d38dc49 \

path.substring(path.lastIndexOf(".enc") + 1).trim() PBEWithHmacSHA256AndAES_128 PBEWithMD5AndTripleDES

box-cryptoconfig (BOX) <127.0.0.1:6666> ciphersuite: AES/OFB/NoPadding //the ciphersuite for this box key: b356198719e456a6 // AES key, in this case with 128 bits iv: 1076ab542789b5f6 // iv for OFB mode integrity: SHA1 // meaning the use of SHA-1 in this case Mackey: NULL // Don’t need in this case </127.0.0.1:6666>

config.properties (BOX) localdelivery: localhost:8888 remote: localhost:6666