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Security and Trust Services API for J2ME

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This is an old revision of this page, as edited by BossyPirate (talk | contribs) at 10:46, 27 June 2025 (Expanded article with structured subsections; added usage examples and reliable sources for each component of the SATSA API.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The Security and Trust Services API for J2ME (SATSA) (JSR 177) is an optional package within Java ME that enables enhanced cryptographic and smart-card-based security for mobile applications. It includes APDU communication, Java Card RMI, general cryptography, and PKI features.[1][2]

Features

SATSA adds the following capabilities to Java ME:

  • Smart-card communication via ISO 7816 APDU.[3][4]
  • Remote invocation of Java Card objects via SATSA‑JCRMI.[5]
  • SATSA-Crypto supporting message digests, symmetric/asymmetric encryption, and signatures.[6][7]
  • SATSA-PKI for certificate-based digital signatures and secure user authentication.[8]

Components

SATSA is divided into four main components:

  • SATSA‑APDU: Low-level APDU communication for ISO/IEC 7816 smart cards.[6][4]
  • SATSA‑JCRMI: Java Card Remote Method Invocation.[5][3]
  • SATSA‑Crypto: Encryption, message digests, digital signature APIs.[9][7]
  • SATSA‑PKI: Secure key storage, certificate handling, digital signature verification.[8][6]

Implementation Examples

APDU Communication

APDUConnection conn = (APDUConnection) Connector.open("apdu:0");
byte[] response = conn.exchangeAPDU(command);

Used in smart card access systems for PIN verification and applet interaction.[6][10]

Java Card RMI

JavaCardRMIConnection jc = (JavaCardRMIConnection)
    Connector.open("jcrmi:0;AID=a0...c.8.1");
MyApplet stub = (MyApplet) jc.getRemoteObject();

Provides a high-level interface to smart card functionality.[5][7]

DES Encryption

Cipher c = Cipher.getInstance("DES/CBC/PKCS5Padding");
c.init(Cipher.ENCRYPT_MODE, key, ivSpec);
c.doFinal(data, 0, data.length, out, 0);

Commonly used to secure local data or perform session encryption.[9][6]

Platform Support and Tools

SATSA is supported on selected devices from major manufacturers including Motorola, Nokia (from Series 40), Samsung, and Sony Ericsson (JP-8+).[11][12]

The Java ME SDK and Sun Java Wireless Toolkit include full SATSA emulation, including APDU/JCRMI over TCP/IP ports 9025 and 9026.[3][6]

See also

References

  1. ^ "Security and Trust Services API for J2ME (SATSA); JSR 177". Oracle. Retrieved 27 June 2025.
  2. ^ "JSR 177: Smart Card Security (SATSA)". Java Community Process. 2004-09-03. Retrieved 27 June 2025.
  3. ^ a b c "WTK User Guide: SATSA". Sun Java Wireless Toolkit. Retrieved 27 June 2025.
  4. ^ a b "2007 JavaOne: What to Do With APDU?" (PDF). JavaOne Conference. 2007. Retrieved 27 June 2025.
  5. ^ a b c "Security and Trust Services APIs Reference Implementation" (PDF). Sun Microsystems. 2004. Retrieved 27 June 2025.
  6. ^ a b c d e f "Oracle SATSA Developer Guide". Oracle. Retrieved 27 June 2025.
  7. ^ a b c "Framework for cryptography algorithms on mobile devices" (PDF). University of Pretoria. 2014. Retrieved 27 June 2025.
  8. ^ a b "Design, Installation and Execution of a Security Agent for Mobile Stations" (PDF). Lecture Notes in Computer Science. 3986. Springer: 1–15. 2006. doi:10.1007/11733447_1. Retrieved 27 June 2025.
  9. ^ a b "How to encrypt/decrypt with DES in J2ME". IT&C Solutions. 2011-06-05. Retrieved 27 June 2025.
  10. ^ "Access STK from J2ME". StackOverflow. 2011-06-08. Retrieved 27 June 2025.
  11. ^ "Developing Applications Using SATSA on Nokia Devices". Nokia Developer. Retrieved 27 June 2025.
  12. ^ "JCP JSR 177 Expert Group". Java Community Process. Retrieved 27 June 2025.
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