AlgorithmInformation-2009
{iso(1) identified-organization(3) dod(6) internet(1) security(5)
mechanisms(5) pkix(7) id-mod(0)
id-mod-algorithmInformation-02(58)}
DEFINITIONS EXPLICIT TAGS ::=
BEGIN
EXPORTS ALL;
IMPORTS
KeyUsage
FROM PKIX1Implicit-2009
{iso(1) identified-organization(3) dod(6) internet(1)
security(5) mechanisms(5) pkix(7) id-mod(0)
id-mod-pkix1-implicit-02(59)} ;
-- Suggested prefixes for algorithm objects are:
--
-- mda- Message Digest Algorithms
-- sa- Signature Algorithms
-- kta- Key Transport Algorithms (Asymmetric)
-- kaa- Key Agreement Algorithms (Asymmetric)
-- kwa- Key Wrap Algorithms (Symmetric)
-- kda- Key Derivation Algorithms
-- maca- Message Authentication Code Algorithms
-- pk- Public Key
-- cea- Content (symmetric) Encryption Algorithms
-- cap- S/MIME Capabilities
ParamOptions ::= ENUMERATED {
required, -- Parameters MUST be encoded in structure
preferredPresent, -- Parameters SHOULD be encoded in structure
preferredAbsent, -- Parameters SHOULD NOT be encoded in structure
absent, -- Parameters MUST NOT be encoded in structure
inheritable, -- Parameters are inherited if not present
optional, -- Parameters MAY be encoded in the structure
...
}
-- DIGEST-ALGORITHM
--
-- Describes the basic information for ASN.1 and a digest
-- algorithm.
--
-- &id - contains the OID identifying the digest algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
--
-- Additional information such as the length of the hash could have
-- been encoded. Without a clear understanding of what information
-- is needed by applications, such extraneous information was not
-- considered to be of sufficent importance.
--
-- Example:
-- mda-sha1 DIGEST-ALGORITHM ::= {
-- IDENTIFIER id-sha1
-- PARAMS TYPE NULL ARE preferredAbsent
-- }
DIGEST-ALGORITHM ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence ]
}
-- SIGNATURE-ALGORITHM
--
-- Describes the basic properties of a signature algorithm
--
-- &id - contains the OID identifying the signature algorithm
-- &Value - contains a type definition for the value structure of
-- the signature; if absent, implies that no ASN.1
-- encoding is performed on the value
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &HashSet - The set of hash algorithms used with this
-- signature algorithm
-- &PublicKeySet - the set of public key algorithms for this
-- signature algorithm
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- sig-RSA-PSS SIGNATURE-ALGORITHM ::= {
-- IDENTIFIER id-RSASSA-PSS
-- PARAMS TYPE RSASSA-PSS-params ARE required
-- HASHES { mda-sha1 | mda-md5, ... }
-- PUBLIC-KEYS { pk-rsa | pk-rsa-pss }
-- }
SIGNATURE-ALGORITHM ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Value OPTIONAL,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&HashSet DIGEST-ALGORITHM OPTIONAL,
&PublicKeySet PUBLIC-KEY OPTIONAL,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[VALUE &Value]
[PARAMS [TYPE &Params] ARE ¶mPresence ]
[HASHES &HashSet]
[PUBLIC-KEYS &PublicKeySet]
[SMIME-CAPS &smimeCaps]
}
-- PUBLIC-KEY
--
-- Describes the basic properties of a public key
--
-- &id - contains the OID identifying the public key
-- &KeyValue - contains the type for the key value
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &keyUsage - contains the set of bits that are legal for this
-- key type. Note that is does not make any statement
-- about how bits may be paired.
-- &PrivateKey - contains a type structure for encoding the private
-- key information.
--
-- Example:
-- pk-rsa-pss PUBLIC-KEY ::= {
-- IDENTIFIER id-RSASSA-PSS
-- KEY RSAPublicKey
-- PARAMS TYPE RSASSA-PSS-params ARE optional
-- CERT-KEY-USAGE { .... }
-- }
PUBLIC-KEY ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&KeyValue OPTIONAL,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&keyUsage KeyUsage OPTIONAL,
&PrivateKey OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[KEY &KeyValue]
[PARAMS [TYPE &Params] ARE ¶mPresence]
[CERT-KEY-USAGE &keyUsage]
[PRIVATE-KEY &PrivateKey]
}
-- KEY-TRANSPORT
--
-- Describes the basic properties of a key transport algorithm
--
-- &id - contains the OID identifying the key transport algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &PublicKeySet - specifies which public keys are used with
-- this algorithm
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- kta-rsaTransport KEY-TRANSPORT ::= {
-- IDENTIFIER &id
-- PARAMS TYPE NULL ARE required
-- PUBLIC-KEYS { pk-rsa | pk-rsa-pss }
-- }
KEY-TRANSPORT ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&PublicKeySet PUBLIC-KEY OPTIONAL,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[PUBLIC-KEYS &PublicKeySet]
[SMIME-CAPS &smimeCaps]
}
-- KEY-AGREE
--
-- Describes the basic properties of a key agreement algorithm
--
-- &id - contains the OID identifying the key agreement algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &PublicKeySet - specifies which public keys are used with
-- this algorithm
-- &Ukm - type of user keying material used
-- &ukmPresence - specifies the requirements to define the UKM field
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- kaa-dh-static-ephemeral KEY-AGREE ::= {
-- IDENTIFIER id-alg-ESDH
-- PARAMS TYPE KeyWrapAlgorithm ARE required
-- PUBLIC-KEYS {
-- {IDENTIFIER dh-public-number KEY DHPublicKey
-- PARAMS TYPE DHDomainParameters ARE inheritable }
-- }
-- - - UKM should be present but is not separately ASN.1-encoded
-- UKM ARE preferredPresent
-- }
KEY-AGREE ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&PublicKeySet PUBLIC-KEY OPTIONAL,
&Ukm OPTIONAL,
&ukmPresence ParamOptions DEFAULT absent,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[PUBLIC-KEYS &PublicKeySet]
[UKM [TYPE &Ukm] ARE &ukmPresence]
[SMIME-CAPS &smimeCaps]
}
-- KEY-WRAP
--
-- Describes the basic properties of a key wrap algorithm
--
-- &id - contains the OID identifying the key wrap algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- kwa-cms3DESwrap KEY-WRAP ::= {
-- IDENTIFIER id-alg-CMS3DESwrap
-- PARAMS TYPE NULL ARE required
-- }
KEY-WRAP ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[SMIME-CAPS &smimeCaps]
}
-- KEY-DERIVATION
--
-- Describes the basic properties of a key derivation algorithm
--
-- &id - contains the OID identifying the key derivation algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- kda-pbkdf2 KEY-DERIVATION ::= {
-- IDENTIFIER id-PBKDF2
-- PARAMS TYPE PBKDF2-params ARE required
-- }
KEY-DERIVATION ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[SMIME-CAPS &smimeCaps]
}
-- MAC-ALGORITHM
--
-- Describes the basic properties of a message
-- authentication code (MAC) algorithm
--
-- &id - contains the OID identifying the MAC algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &keyed - MAC algorithm is a keyed MAC algorithm
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Some parameters that perhaps should have been added would be
-- fields with the minimum and maximum MAC lengths for
-- those MAC algorithms that allow truncations.
--
-- Example:
-- maca-hmac-sha1 MAC-ALGORITHM ::= {
-- IDENTIFIER hMAC-SHA1
-- PARAMS TYPE NULL ARE preferredAbsent
-- IS KEYED MAC TRUE
-- SMIME-CAPS {IDENTIFIED BY hMAC-SHA1}
-- }
MAC-ALGORITHM ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&keyed BOOLEAN,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
IS-KEYED-MAC &keyed
[SMIME-CAPS &smimeCaps]
}
-- CONTENT-ENCRYPTION
--
-- Describes the basic properties of a content encryption
-- algorithm
--
-- &id - contains the OID identifying the content
-- encryption algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- Example:
-- cea-3DES-cbc CONTENT-ENCRYPTION ::= {
-- IDENTIFIER des-ede3-cbc
-- PARAMS TYPE IV ARE required
-- SMIME-CAPS { IDENTIFIED BY des-ede3-cbc }
-- }
CONTENT-ENCRYPTION ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[SMIME-CAPS &smimeCaps]
}
-- ALGORITHM
--
-- Describes a generic algorithm identifier
--
-- &id - contains the OID identifying the algorithm
-- &Params - if present, contains the type for the algorithm
-- parameters; if absent, implies no parameters
-- ¶mPresence - parameter presence requirement
-- &smimeCaps - contains the object describing how the S/MIME
-- capabilities are presented.
--
-- This would be used for cases where an algorithm of an unknown
-- type is used. In general however, one should either define
-- a more complete algorithm structure (such as the one above)
-- or use the TYPE-IDENTIFIER class.
ALGORITHM ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Params OPTIONAL,
¶mPresence ParamOptions DEFAULT absent,
&smimeCaps SMIME-CAPS OPTIONAL
} WITH SYNTAX {
IDENTIFIER &id
[PARAMS [TYPE &Params] ARE ¶mPresence]
[SMIME-CAPS &smimeCaps]
}
-- AlgorithmIdentifier
--
-- Provides the generic structure that is used to encode algorithm
-- identification and the parameters associated with the
-- algorithm.
--
-- The first parameter represents the type of the algorithm being
-- used.
-- The second parameter represents an object set containing the
-- algorithms that may occur in this situation.
-- The initial list of required algorithms should occur to the
-- left of an extension marker; all other algorithms should
-- occur to the right of an extension marker.
--
-- The object class ALGORITHM can be used for generic unspecified
-- items.
-- If new ALGORITHM classes are defined, the fields &id and &Params
-- need to be present as fields in the object in order to use
-- this parameterized type.
--
-- Example:
-- SignatureAlgorithmIdentifier ::=
-- AlgorithmIdentifier{SIGNATURE-ALGORITHM, {SignatureAlgSet}}
AlgorithmIdentifier{ALGORITHM-TYPE, ALGORITHM-TYPE:AlgorithmSet} ::=
SEQUENCE {
algorithm ALGORITHM-TYPE.&id({AlgorithmSet}),
parameters ALGORITHM-TYPE.
&Params({AlgorithmSet}{@algorithm}) OPTIONAL
}
-- S/MIME Capabilities
--
-- We have moved the SMIME-CAPS from the module for RFC 3851 to here
-- because it is used in RFC 4262 (X.509 Certificate Extension for
-- S/MIME Capabilities)
--
--
-- This class is used to represent an S/MIME capability. S/MIME
-- capabilities are used to represent what algorithm capabilities
-- an individual has. The classic example was the content encryption
-- algorithm RC2 where the algorithm id and the RC2 key lengths
-- supported needed to be advertised, but the IV used is not fixed.
-- Thus, for RC2 we used
--
-- cap-RC2CBC SMIME-CAPS ::= {
-- TYPE INTEGER ( 40 | 128 ) IDENTIFIED BY rc2-cbc }
--
-- where 40 and 128 represent the RC2 key length in number of bits.
--
-- Another example where information needs to be shown is for
-- RSA-OAEP where only specific hash functions or mask generation
-- functions are supported, but the saltLength is specified by the
-- sender and not the recipient. In this case, one can either
-- generate a number of capability items,
-- or a new S/MIME capability type could be generated where
-- multiple hash functions could be specified.
--
--
-- SMIME-CAP
--
-- This class is used to associate the type that describes the
-- capabilities with the object identifier.
--
SMIME-CAPS ::= CLASS {
&id OBJECT IDENTIFIER UNIQUE,
&Type OPTIONAL
}
WITH SYNTAX { [TYPE &Type] IDENTIFIED BY &id }
--
-- Generic type - this is used for defining values.
--
-- Define a single S/MIME capability encoding
SMIMECapability{SMIME-CAPS:CapabilitySet} ::= SEQUENCE {
capabilityID SMIME-CAPS.&id({CapabilitySet}),
parameters SMIME-CAPS.&Type({CapabilitySet}
{@capabilityID}) OPTIONAL
}
-- Define a sequence of S/MIME capability values
SMIMECapabilities { SMIME-CAPS:CapabilitySet } ::=
SEQUENCE SIZE (1..MAX) OF SMIMECapability{{CapabilitySet} }
END
