NIST-AES { joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101) csor(3)
nistalgorithm(4) modules (0) aes (1) } DEFINITIONS IMPLICIT TAGS ::= BEGIN

-- IMPORTS None --

-- EXPORTS All --


AESAlgorithmIdentifier ::= AlgorithmIdentifier {{ AES-Algorithms }}


-- Algorithm information objects --

AES-Algorithms ALGORITHM ::= {
   AES-128-Algorithms  |
   AES-192-Algorithms  |
   AES-256-Algorithms,
   ...
}

AES-128-Algorithms ALGORITHM ::= {
   aes-128-ECB  |
   aes-128-CBC  |
   aes-128-OFB  |
   aes-128-CFB
}

aes-128-ECB ALGORITHM ::= { OID id-aes128-ECB }
aes-128-CBC ALGORITHM ::= { OID id-aes128-CBC PARMS AES-IV }
aes-128-OFB ALGORITHM ::= { OID id-aes128-OFB PARMS AES-IV }
aes-128-CFB ALGORITHM ::= { OID id-aes128-CFB PARMS CFBParameters }

AES-192-Algorithms ALGORITHM ::= {
   aes-192-ECB  |
   aes-192-CBC  |
   aes-192-OFB  |
   aes-192-CFB
}

aes-192-ECB ALGORITHM ::= { OID id-aes192-ECB }
aes-192-CBC ALGORITHM ::= { OID id-aes192-CBC PARMS AES-IV }
aes-192-OFB ALGORITHM ::= { OID id-aes192-OFB PARMS AES-IV }
aes-192-CFB ALGORITHM ::= { OID id-aes192-CFB PARMS CFBParameters }

AES-256-Algorithms ALGORITHM ::= {
   aes-256-ECB  |
   aes-256-CBC  |
   aes-256-OFB  |
   aes-256-CFB
}

aes-256-ECB ALGORITHM ::= { OID id-aes256-ECB }
aes-256-CBC ALGORITHM ::= { OID id-aes256-CBC PARMS AES-IV }
aes-256-OFB ALGORITHM ::= { OID id-aes256-OFB PARMS AES-IV }
aes-256-CFB ALGORITHM ::= { OID id-aes256-CFB PARMS CFBParameters }


-- Parameter definitions --

CFBParameters ::= SEQUENCE {
   aes-IV        AES-IV,
   numberOfBits	 NumberOfBits
}

AES-IV ::= OCTET STRING (SIZE(16))

NumberOfBits ::= INTEGER(1..128)


-- AES information object identifiers -- 

csor OBJECT IDENTIFIER ::= { 
   joint-iso-itu-t(2) country(16) us(840) organization(1) gov(101) 3 }

nistAlgorithms OBJECT IDENTIFIER ::= { csor nistAlgorithm(4) } 

aes OBJECT IDENTIFIER ::= { nistAlgorithms  1 }

-- 128 bit AES information object identifiers -- 

id-aes128-ECB OBJECT IDENTIFIER ::= { aes 1 }
id-aes128-CBC OBJECT IDENTIFIER ::= { aes 2 }
id-aes128-OFB OBJECT IDENTIFIER ::= { aes 3 }
id-aes128-CFB OBJECT IDENTIFIER ::= { aes 4 }

-- 192 bit AES information object identifiers -- 

id-aes192-ECB OBJECT IDENTIFIER ::= { aes 21 }
id-aes192-CBC OBJECT IDENTIFIER ::= { aes 22 }
id-aes192-OFB OBJECT IDENTIFIER ::= { aes 23 }
id-aes192-CFB OBJECT IDENTIFIER ::= { aes 24 }

-- 256 bit AES information object identifiers -- 

id-aes256-ECB OBJECT IDENTIFIER ::= { aes 41 } 
id-aes256-CBC OBJECT IDENTIFIER ::= { aes 42 }  
id-aes256-OFB OBJECT IDENTIFIER ::= { aes 43 } 
id-aes256-CFB OBJECT IDENTIFIER ::= { aes 44 }


-- Supporting definitions --

AlgorithmIdentifier { ALGORITHM:IOSet } ::= SEQUENCE {
   algorithm   ALGORITHM.&id({IOSet}),
   parameters  ALGORITHM.&Type({IOSet}{@algorithm})  OPTIONAL
}

ALGORITHM ::= CLASS {
   &id    OBJECT IDENTIFIER  UNIQUE,
   &Type  OPTIONAL
}
  WITH SYNTAX { OID &id [PARMS &Type] }

END  -- NIST-AES --

--
-- Last update: Friday, October 6, 2000
--
-- Tim Polk, NIST
-- syntax not verified!
--