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The Portable Symmetric Key Container (PSKC) contains a number of XML elements and XML attributes carrying keys and related information. Not all algorithms, however, are able to use all elements and for other algorithm certain information is mandatory. This lead to the introduction of PSKC algorithm profiles that provide further description about the mandatory and optional information elements and their semantic, including extensions that may be needed. The main PSKC specification defines two PSKC algorithm profiles, namely "HOTP" and "PIN". This document extends the initial set and specifies nine further algorithm profiles for PKSC.
This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as “work in progress.”
This Internet-Draft will expire on November 3, 2010.
Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
1.
Introduction
2.
Terminology
3.
OCRA (OATH Challenge Response Algorithm)
4.
TOTP (OATH Time based OTP)
5.
SecurID-AES
6.
SecurID-AES-Counter
7.
SecurID-ALGOR
8.
ActivIdentity-3DES
9.
ActivIdentity-AES
10.
ActivIdentity-DES
11.
ActivIdentity-EVENT
12.
Security Considerations
13.
IANA Considerations
14.
Acknowledgements
15.
References
15.1.
Normative References
15.2.
Informative References
§
Authors' Addresses
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This document specifies a set of algorithm profiles for PKSC, namely
OCRA (OATH Challenge Response Algorithm)
TOTP (OATH Time based OTP)
SecurID-AES
SecurID-AES-Counter
SecurID-ALGOR
ActivIdentity-3DES
ActivIdentity-AES
ActivIdentity-DES
ActivIdentity-EVENT
[Editor's Note: The content of this document was created by moving a number of PSKC algorithm profiles from draft-ietf-keyprov-portable-symmetric-key-container-06.txt into this document. Since draft-ietf-keyprov-portable-symmetric-key-container-07.txt had experienced a number of changes the description and the examples in this document are likely to be out-of-sync. Re-alignment will be provided in a future version.]
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The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119] (, “Key words for use in RFCs to Indicate Requirement Levels,” March 1997.).
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- Common Name:
- OCRA
- Class:
- OTP
- URI:
- urn:ietf:params:xml:ns:keyprov:pskc#OCRA-1:(ocra_suite_parameters) - e.g. urn:ietf:params:xml:ns:keyprov:pskc#OCRA-1:HOTP-SHA512-8:C-QN08
- Algorithm Definition:
- http://tools.ietf.org/id/draft-mraihi-mutual-oath-hotp-variants-11.txt
- Identifier Definition
- (this RFC)
- Registrant Contact:
- IESG
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. The "CR" attribute of the <Usage> MUST be set "true" and it MUST be the only attribute set. The element <ChallengeFormat> and <ResponseFormat> of the <Usage> MUST be present.
For the <Data> elements of a <Key> of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
If the element <Time> is present, the following elements MUST be also present.
- Counter
- Time
- TimeInterval
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a lengthy of at least 16 octets (128 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Length' attribute MUST be between 6 and 9.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>TokenVendorAcme</Manufacturer> <SerialNo>987654322</SerialNo> </DeviceInfo> <Key KeyId="12345678" KeyAlgorithm= "urn:ietf:params:xml:ns:keyprov:pskc#OCRA-1:HOTP-SHA512-8:C-QN08"> <Issuer>Issuer</Issuer> <Usage CR="true"> <ChallengeFormat Min="8" Max="8" Format="DECIMAL"/> <ResponseFormat Length="8" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue>MTIzNDU2Nzg5MDEyMzQ1Njc4OTA=</PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- TOTP
- Class:
- OTP
- URI:
- urn:ietf:params:xml:ns:keyprov:pskc#totp
- Algorithm Definition:
- http://tools.ietf.org/id/draft-mraihi-totp-timebased-05.txt
- Identifier Definition
- (this RFC)
- Registrant Contact:
- IESG
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. The "OTP" attribute of the <Usage> MUST be set "true" and it MUST be the only attribute set. The element <ResponseFormat> of the <Usage> MUST be used to indicate the OTP length and the value format.
For the <Data> elements of a <Key> of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Time
- TimeInterval
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a lengthy of at least 16 octets (128 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Length' attribute MUST be between 6 and 9.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>TokenVendorAcme</Manufacturer> <SerialNo>987654323</SerialNo> </DeviceInfo> <Key KeyAlgorithm="urn:ietf:params:xml:ns:keyprov:pskc#totp" KeyId="987654323"> <Issuer>Issuer</Issuer> <Usage OTP="true"> <ResponseFormat Length="6" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue> MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Time> <PlainValue>0</PlainValue> </Time> <TimeInterval> <PlainValue>30</PlainValue> </TimeInterval> <TimeDrift> <PlainValue>4</PlainValue> </TimeDrift> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- SecurID-AES
- Class:
- OTP
- URI:
- http://www.rsasecurity.com/rsalabs/otps/schemas/2005/09/otps-wst#SecurID-AES
- Algorithm Definition:
- http://www.rsa.com/rsalabs/node.asp?id=2821
- Identifier Definition:
- http://www.rsa.com/rsalabs/node.asp?id=2821
- Registrant Contact:
- Andrea Doherty, RSA the Security Division of EMC, <andrea.doherty@rsa.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <StartDate>, <ExpiryDate>, and <Usage> sub-elements MUST be present. The "OTP" attribute of <Usage> MUST be set to "true" and it MUST be the only attribute set. The <ResponseFormat> sub-element of <Usage> MUST be used to indicate the OTP length and the value format.
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a lengthy of at least 16 octets (128 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Length' attribute MUST be set to a minimum value of 6.
- The <StartDate> and <ExpiryDate> elements MUST be of type <xs:dateTime>.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0" <Device> <DeviceInfo> <Manufacturer>RSA, The Security Division of EMC</Manufacturer> <SerialNo>123456798</SerialNo> </DeviceInfo> <Key KeyAlgorithm=http://www.rsasecurity.com/rsalabs/otps/schemas/2005 /09/otps-wst#SecurID-AES KeyId="23456789"> <Issuer>Issuer</Issuer> <Usage OTP="true> <ResponseFormat Length="6" Format="DECIMAL"/> </Usage> <StartDate>2006-04-14T00:00:00Z</StartDate> <ExpiryDate>2010-09-30T00:00:00Z</ExpiryDate> </Key> </Device> </KeyContainer>
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- Common Name:
- SecurID-AES-Counter
- Class:
- OTP
- URI:
- http://www.rsa.com/names/2008/04/algorithms/SecurID/SecurID-AES128-Counter
- Algorithm Definition:
- http://www.rsa.com/names/2008/04/algorithms/SecurID/SecurID-AES128-Counter
- Identifier Definition
- http://www.rsa.com/names/2008/04/algorithms/SecurID/SecurID-AES128-Counter
- Registrant Contact:
- Andrea Doherty, RSA the Security Division of EMC, <andrea.doherty@rsa.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <StartDate>, <ExpiryDate>, and <Usage> sub-elements MUST be present. The "OTP" attribute of <Usage> MUST be set to "true" and it MUST be the only attribute set. The <ResponseFormat> sub-element of <Usage> MUST be used to indicate the OTP length and the value format.
For the Data elements of a <Key> of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Counter
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a lengthy of at least 16 octets (128 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Length' attribute MUST be set to a minimum value of 6.
- The <StartDate> and <ExpiryDate> elements MUST be of type <xs:dateTime>.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0" <Device> <DeviceInfo> <Manufacturer>RSA, The Security Division of EMC</Manufacturer> <SerialNo>123456798</SerialNo> </DeviceInfo> <Key KeyAlgorithm=http://www.rsa.com/names/2008/04/algorithms/ SecurID/SecurID-AES128-Counter KeyId="23456789"> <Issuer>Issuer</Issuer> <Usage OTP="true> <ResponseFormat Length="6" Format="DECIMAL"/> </Usage> <StartDate>2006-04-14T00:00:00Z</StartDate> <ExpiryDate>2010-09-30T00:00:00Z</ExpiryDate> <Data> <Secret> <PlainValue>MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- SecurID-ALGOR
- Class:
- OTP
- URI:
- http://www.rsasecurity.com/rsalabs/otps/schemas/2005/09/otps-wst#SecurID-ALGOR
- Algorithm Definition:
- http://www.rsa.com/rsalabs/node.asp?id=2821
- Identifier Definition:
- http://www.rsa.com/rsalabs/node.asp?id=2821
- Registrant Contact:
- Andrea Doherty, RSA the Security Division of EMC, <andrea.doherty@rsa.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <StartDate>, <ExpiryDate>, and <Usage> sub-elements MUST be present. The "OTP" attribute of <Usage> MUST be set to "true" and it MUST be the only attribute set. The <ResponseFormat> sub-element of <Usage> MUST be used to indicate the OTP length and the value format.
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a lengthy of at least 8 octets (64 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Length' attribute MUST be set to a value of 6 through 8.
- The <StartDate> and <ExpiryDate> elements MUST be of type <xs:dateTime>.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0" <Device> <DeviceInfo> <Manufacturer>RSA, The Security Division of EMC</Manufacturer> <SerialNo>123456798</SerialNo> </DeviceInfo> <Key KeyAlgorithm=http://www.rsasecurity.com/rsalabs/otps/schemas/ 2005/09/otps-wst#SecurID-ALGOR KeyId="23456789"> <Issuer>Issuer</Issuer> <Usage OTP="true> <ResponseFormat Length="6" Format="DECIMAL"/> </Usage> <StartDate>2006-04-14T00:00:00Z</StartDate> <ExpiryDate>2010-09-30T00:00:00Z</ExpiryDate> </Key> </Device> </KeyContainer>
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- Common Name:
- ActivIdentity-3DES
- Class:
- OTP
- URI:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-3DES
- Algorithm Definition:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-3DES
- Identifier Definition
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-3DES
- Registrant Contact:
- Philip Hoyer, ActivIdentity Inc, <philip.hoyer@actividentity.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. This algorithm can be used for otp, challenge response, parameter based MACing (integrity) and to generate a device unlock code (n case of devices where there is local PIN management and the devce has been locked after a specific amount of wrong PIN entry attempts). Hence the "OTP", "CR","Integrity" and "Unlock" attribute of the <Usage> can be set to "true", but at least one of the above MUST be set to true. The element <ResponseFormat> of the <Usage> MUST be used to indicate the OTP length, the value format and optionally if a check digit is being used. If the use is challenge-response then the <ChallengeFormat> of the <Usage> MUST be used to indicate the challenge minimum and maximum length, its format and optionally if a check digit is being used.
For the <Data> elements of a <Key> of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Secret
- Counter
- Time
- TimeInterval
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a length of at least 16 octets (Double DES keys 128 bits including parity) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL" or "HEXADECIMAL", and the 'Length' attribute MUST be between 6 and 16.
- The <ChallengeFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Min' and 'Max' attributes be between 4 and 16 (The Min attribute MUST be equal or less than the Max).
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a Key of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>ActivIdentity</Manufacturer> <SerialNo>34567890</SerialNo> </DeviceInfo> <Key KeyAlgorithm="http://www.actividentity.com/ 2008/04/algorithms/algorithms#ActivIdentity-3DES" KeyId="12345677"> <Issuer>Issuer</Issuer> <Usage OTP="true"> <ResponseFormat Length="8" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue> MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> <Time> <PlainValue>0</PlainValue> </Time> <TimeInterval> <PlainValue>32</PlainValue> </TimeInterval> <TimeDrift> <PlainValue>0</PlainValue> </TimeDrift> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- ActivIdentity-AES
- Class:
- OTP
- URI:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-AES
- Algorithm Definition:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-AES
- Identifier Definition
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-AES
- Registrant Contact:
- Philip Hoyer, ActivIdentity Inc, <philip.hoyer@actividentity.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. This algorithm can be used for otp, challenge response, parameter based MACing (integrity) and to generate a device unlock code (n case of devices where there is local PIN management and the devce has been locked after a specific amount of wrong PIN entry attempts). Hence the "OTP", "CR","Integrity" and "Unlock" attribute of the <Usage> can be set to "true", but at least one of the above MUST be set to true. The element <ResponseFormat> of the <Usage> MUST be used to indicate the OTP length, the value format and optionally if a check digit is being used. If the use is challenge-response then the <ChallengeFormat> of the <Usage> MUST be used to indicate the challenge minimum and maximum length, its format and optionally if a check digit is being used.
For the <Data> elements of a key of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Secret
- Counter
- Time
- TimeInterval
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a length of at least 16 octets (128 bits) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL" or "HEXADECIMAL", and the 'Length' attribute MUST be between 6 and 16.
- The <ChallengeFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Min' and 'Max' attributes be between 4 and 16 (The Min attribute MUST be equal or less than the Max).
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>ActivIdentity</Manufacturer> <SerialNo>34567890</SerialNo> </DeviceInfo> <Key KeyAlgorithm="http://www.actividentity.com/ 2008/04/algorithms/algorithms#ActivIdentity-AES" KeyId="12345677"> <Issuer>Issuer</Issuer> <Usage OTP="true"> <ResponseFormat Length="8" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue> MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> <Time> <PlainValue>0</PlainValue> </Time> <TimeInterval> <PlainValue>32</PlainValue> </TimeInterval> <TimeDrift> <PlainValue>0</PlainValue> </TimeDrift> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- ActivIdentity-DES
- Class:
- OTP
- URI:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-DES
- Algorithm Definition:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-DES
- Identifier Definition
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-DES
- Registrant Contact:
- Philip Hoyer, ActivIdentity Inc, <philip.hoyer@actividentity.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. This algorithm can be used for otp, challenge response, parameter based MACing (integrity) and to generate a device unlock code (n case of devices where there is local PIN management and the devce has been locked after a specific amount of wrong PIN entry attempts). Hence the "OTP", "CR","Integrity" and "Unlock" attribute of the <Usage> can be set to "true", but at least one of the above MUST be set to true. The element <ResponseFormat> of the <Usage> MUST be used to indicate the OTP length, the value format and optionally if a check digit is being used. If the use is challenge-response then the <ChallengeFormat> of the <Usage> MUST be used to indicate the challenge minimum and maximum length, its format and optionally if a check digit is being used.
For the <Data> elements of a key of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Counter
- Time
- TimeInterval
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a length of at least 8 octets (56 bits + parity) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL" or "HEXADECIMAL", and the 'Length' attribute MUST be between 6 and 16.
- The <ChallengeFormat> element MUST have the 'Format' attribute set to "DECIMAL", and the 'Min' and 'Max' attributes be between 4 and 16 (The Min attribute MUST be equal or less than the Max).
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>ActivIdentity</Manufacturer> <SerialNo>34567890</SerialNo> </DeviceInfo> <Key KeyAlgorithm="http://www.actividentity.com/ 2008/04/algorithms/algorithms#ActivIdentity-DES" KeyId="12345677"> <Issuer>Issuer</Issuer> <Usage OTP="true"> <ResponseFormat Length="8" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue> MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> <Time> <PlainValue>0</PlainValue> </Time> <TimeInterval> <PlainValue>32</PlainValue> </TimeInterval> <TimeDrift> <PlainValue>0</PlainValue> </TimeDrift> </Data> </Key> </Device> </KeyContainer>
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- Common Name:
- ActivIdentity-EVENT
- Class:
- OTP
- URI:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-EVENT
- Algorithm Definition:
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-EVENT
- Identifier Definition
- http://www.actividentity.com/2008/04/algorithms/algorithms#ActivIdentity-EVENT
- Registrant Contact:
- Philip Hoyer, ActivIdentity Inc, <philip.hoyer@actividentity.com>
- Profile of XML attributes and subelements of the <Key> entity:
For a <Key> of this algorithm, the <Usage> subelements MUST be present. This algorithm can be used for otp, challenge response, parameter based MACing (integrity) and to generate a device unlock code (n case of devices where there is local PIN management and the device has been locked after a specific amount of wrong PIN entry attempts). Hence the "OTP", "CR","Integrity" and "Unlock" attribute of the <Usage> can be set to "true", but at least one of the above MUST be set to true. The element <ResponseFormat> of the <Usage> MUST be used to indicate the OTP length, the value format and optionally if a check digit is being used. If the use is challenge-response then the <ChallengeFormat> of the <Usage> MUST be used to indicate the challenge minimum and maximum length, its format and optionally if a check digit is being used.
For the <Data> elements of a key of this algorithm, the following subelements MUST be present in either the <Key> element itself or an commonly shared <KeyProperties> element.
- Counter
The following additional constraints apply:
- The value of the <Secret> element MUST contain key material with a length of at least 8 octets (56 bits + parity) if it is present.
- The <ResponseFormat> element MUST have the 'Format' attribute set to "DECIMAL" or "HEXADECIMAL", and the 'Length' attribute MUST be between 6 and 16.
- The <PINPolicy> element MAY be present but the <Format> child element of the <PINPolicy> element cannot be set to "Algorithmic".
An example of a <Key> of this algorithm is as follows.
<?xml version="1.0" encoding="UTF-8"?> <KeyContainer Version="1.0" xmlns="urn:ietf:params:xml:ns:keyprov:pskc:1.0"> <Device> <DeviceInfo> <Manufacturer>ActivIdentity</Manufacturer> <SerialNo>34567890</SerialNo> </DeviceInfo> <Key KeyAlgorithm="http://www.actividentity.com/ 2008/04/algorithms/algorithms#ActivIdentity-EVENT" KeyId="12345677"> <Issuer>Issuer</Issuer> <Usage OTP="true"> <ResponseFormat Length="8" Format="DECIMAL"/> </Usage> <Data> <Secret> <PlainValue> MTIzNDU2Nzg5MDEyMzQ1Njc4OTA= </PlainValue> </Secret> <Counter> <PlainValue>0</PlainValue> </Counter> </Data> </Key> </Device> </KeyContainer>
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[Editor's Note: Security considerations regarding the algorithms go in here.]
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[Editor's Note: The registration of the algorithm profiles goes in here.]
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Add your name here.
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[RFC2119] | “Key words for use in RFCs to Indicate Requirement Levels,” BCP 14, RFC 2119, March 1997. |
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[PSKC] | Hoyer, P., Pei, M., and S. Machani, “Portable Symmetric Key Container,” Internet Draft Informational, URL: http://tools.ietf.org/html/draft-ietf-keyprov-pskc-05, January 2010. |
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Philip Hoyer | |
ActivIdentity, Inc. | |
117 Waterloo Road | |
London, SE1 8UL | |
UK | |
Phone: | +44 (0) 20 7744 6455 |
Email: | Philip.Hoyer@actividentity.com |
Mingliang Pei | |
VeriSign, Inc. | |
487 E. Middlefield Road | |
Mountain View, CA 94043 | |
USA | |
Phone: | +1 650 426 5173 |
Email: | mpei@verisign.com |
Salah Machani | |
Diversinet, Inc. | |
2225 Sheppard Avenue East | |
Suite 1801 | |
Toronto, Ontario M2J 5C2 | |
Canada | |
Phone: | +1 416 756 2324 Ext. 321 |
Email: | smachani@diversinet.com |
Andrea Doherty | |
RSA, The Security Division of EMC | |
174 Middlesex Tpk. | |
Bedford, MA 01730 | |
USA | |
Email: | adoherty@rsa.com |