AR000997A1 - Metodo y disposicion criptografica para codificar con seguridad un bloque de datos de texto no cifrado en un bloque de datos de texto cifrado. - Google Patents

Metodo y disposicion criptografica para codificar con seguridad un bloque de datos de texto no cifrado en un bloque de datos de texto cifrado.

Info

Publication number
AR000997A1
AR000997A1 ARP960101461A AR10146196A AR000997A1 AR 000997 A1 AR000997 A1 AR 000997A1 AR P960101461 A ARP960101461 A AR P960101461A AR 10146196 A AR10146196 A AR 10146196A AR 000997 A1 AR000997 A1 AR 000997A1
Authority
AR
Argentina
Prior art keywords
text
stage
key
block
compatibility
Prior art date
Application number
ARP960101461A
Other languages
English (en)
Original Assignee
Nokia Mobile Phones Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Publication of AR000997A1 publication Critical patent/AR000997A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/04—Masking or blinding
    • H04L2209/046—Masking or blinding of operations, operands or results of the operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/34—Encoding or coding, e.g. Huffman coding or error correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/80—Wireless
    • H04L2209/805—Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Un método y aparato para criptografiado de teléfonos celulares digitales incluye una llave cuando se requiere elegir entre seguridad con compatibilidady una mayor seguridad.Se convierte texto no cifrado en texto cifrado utilizando un procedimientode transformación de tres etapas. En una primer etapa, eltexto no cifrado es transformado utilizando una clave secreta para controlar el criptografiado por un procedimiento de transformación invertible. En unasegunda etapa, la salida de la primer etapa es transformada por una transformación involutoria, que es sin clave cuando la llave de compatibilidadestá en una posición de compatibilidad y que es en clave cuando la llave de compatibilidad está en una posición de seguridad. Enuna tercera etapa, lasalida de la segunda etapa es transformada por la inversa de la transformación efectuada en la primer etapa. La llave de compatibilidad se utiliza paraconmutar entre compatibilidad con un estándar de criptografiado menos seguroy un criptografiado seguro basado en una clave.
ARP960101461A 1995-02-22 1996-02-21 Metodo y disposicion criptografica para codificar con seguridad un bloque de datos de texto no cifrado en un bloque de datos de texto cifrado. AR000997A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/394,537 US5594797A (en) 1995-02-22 1995-02-22 Variable security level encryption

Publications (1)

Publication Number Publication Date
AR000997A1 true AR000997A1 (es) 1997-08-27

Family

ID=23559374

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960101461A AR000997A1 (es) 1995-02-22 1996-02-21 Metodo y disposicion criptografica para codificar con seguridad un bloque de datos de texto no cifrado en un bloque de datos de texto cifrado.

Country Status (5)

Country Link
US (1) US5594797A (es)
CN (1) CN1136738A (es)
AR (1) AR000997A1 (es)
BR (1) BR9600772A (es)
CA (1) CA2168717C (es)

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Also Published As

Publication number Publication date
CA2168717A1 (en) 1996-08-23
CA2168717C (en) 2005-06-28
US5594797A (en) 1997-01-14
CN1136738A (zh) 1996-11-27
BR9600772A (pt) 1997-12-23

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