John Fredy Barrera

Summary

Affiliation: Universidad de Antioquia
Country: Colombia

Publications

  1. doi request reprint Optical encryption and QR codes: secure and noise-free information retrieval
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226 Medellin, Colombia
    Opt Express 21:5373-8. 2013
  2. ncbi request reprint Efficient encrypting procedure using amplitude and phase as independent channels to display decoy objects
    John Fredy Barrera
    , , Universidad de Antioquia, A A 1226, , Colombia
    Appl Opt 48:3120-8. 2009
  3. doi request reprint Known-plaintext attack on a joint transform correlator encrypting system
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226 Medellin, Colombia
    Opt Lett 35:3553-5. 2010
  4. ncbi request reprint Experimental multiplexing of encrypted movies using a JTC architecture
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226, Medellin, Colombia
    Opt Express 20:3388-93. 2012
  5. ncbi request reprint Master key generation to avoid the use of an external reference wave in an experimental JTC encrypting architecture
    Edgar Rueda
    Instituto de Fisica, Universidad de Antioquia, Medellin, Colombia
    Appl Opt 51:1822-7. 2012

Collaborators

  • Edgar Rueda
  • Roberto Torroba
  • John Fredy Barrera
  • Carlos Rios

Detail Information

Publications5

  1. doi request reprint Optical encryption and QR codes: secure and noise-free information retrieval
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226 Medellin, Colombia
    Opt Express 21:5373-8. 2013
    ..Actual smartphone collected results are shown to validate our proposal...
  2. ncbi request reprint Efficient encrypting procedure using amplitude and phase as independent channels to display decoy objects
    John Fredy Barrera
    , , Universidad de Antioquia, A A 1226, , Colombia
    Appl Opt 48:3120-8. 2009
    ..Finally, as an example to show the potential of the method, we combine the separate channels in a multiplexing technique with the Gerchberg-Saxton algorithm to generate an efficient multiuser secure process...
  3. doi request reprint Known-plaintext attack on a joint transform correlator encrypting system
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226 Medellin, Colombia
    Opt Lett 35:3553-5. 2010
    ..We also analyze the success of this attack for different pairs of plaintext-ciphertext used to get the encrypting code. We present simulation results for the decrypting procedure to demonstrate the validity of our analysis...
  4. ncbi request reprint Experimental multiplexing of encrypted movies using a JTC architecture
    John Fredy Barrera
    Grupo de Óptica y Fotónica, Instituto de Fisica, Universidad de Antioquia, A A 1226, Medellin, Colombia
    Opt Express 20:3388-93. 2012
    ..One arm of the interferometer is the joint transform correlator and the other arm is the reference wave. We include the complete description of the procedure along with experimental results supporting the proposal...
  5. ncbi request reprint Master key generation to avoid the use of an external reference wave in an experimental JTC encrypting architecture
    Edgar Rueda
    Instituto de Fisica, Universidad de Antioquia, Medellin, Colombia
    Appl Opt 51:1822-7. 2012
    ..We present the experimental demonstration of the proposed method including two examples where this technique is successfully applied for several input objects...