Network Working Group J. Bedell Internet-Draft infoeng.org Intended status: Informational August 29, 2006 Expires: March 2, 2007 Information Currency Documents and Operations draft-jpbedell-information-currency-02 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on March 2, 2007. Copyright Notice Copyright (C) The Internet Society (2006). Bedell Expires March 2, 2007 [Page 1] Internet-Draft Information Currency Docs. and Ops. August 2006 Abstract Information currency is the name given to digital financial instruments with information as the underlying asset. The document formats for information currency and the operations defined for information currency are described in this note. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Information Currency Documents . . . . . . . . . . . . . . . . 4 2.1. Information Currency Units . . . . . . . . . . . . . . . . 4 2.2. Series Information Document . . . . . . . . . . . . . . . 5 3. Information Currency Operations . . . . . . . . . . . . . . . 10 3.1. Information Currency Issuance . . . . . . . . . . . . . . 10 3.2. Information Currency Exchange . . . . . . . . . . . . . . 15 3.3. Information Currency Verification . . . . . . . . . . . . 18 4. Information Currency Applications . . . . . . . . . . . . . . 21 5. Security Considerations . . . . . . . . . . . . . . . . . . . 22 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 23 7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 24 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 26 Intellectual Property and Copyright Statements . . . . . . . . . . 27 Bedell Expires March 2, 2007 [Page 2] Internet-Draft Information Currency Docs. and Ops. August 2006 1. Introduction Economic calculation [1] enables the efficient use of scarce resources among independent agents in an economic system. The use of economic mechanisms in human society is ubiquitous, enabling billions of people to live with (generally) increasing prosperity and quality of life. Tradeable representations of underlying economic value have been an increasingly important part of human economies for the last several centuries. Currently, tradeable property titles are structured for guaranteed periodic payments (in the form of bonds), fractional ownership of capital goods and corporate entities (corporate equities or stock shares), physical commodities (for example, crude oil or agricultural products), and many other economic goods. The buying and selling of property titles allocates capital between various commercial entities, and enables the efficient use of capital in society. The critical role of human intellectual capital in promoting further economic development motivates the development of new market mechanisms for the management of information using economic means. In the following, a new means for applying economic calculation to the management of information is described. The basic principle is the representation of a unit of digital information using a finite set of digital certificates (an information currency series). Each digital certificate is issued by a trusted authority, and has a unique identifying URL that can be accessed to obtain the original underlying information. Each digital certificate (information currency unit or ICU) can be validated to ensure that it is a valid member of the set representing the underlying information. Furthermore, each valid ICU can be exchanged for another information currency unit, invalidating the original ICU in the process. The use of public-key cryptography for digital signatures of information currency documents makes it possible to associate arbitrary digital information with public keys. While the principles underlying the implementation of information currency systems are quite general, the discussion that follows will focus on their specific realization within the ICWS implementation [2]. Bedell Expires March 2, 2007 [Page 3] Internet-Draft Information Currency Docs. and Ops. August 2006 2. Information Currency Documents The basic principle behind the concept of information currency systems is the representation of an underlying unit of information by exchangeable instruments of a known scarcity that can be traded between individuals. This unit of underlying information can take a variety of forms, including text representations (e.g. a person's name and/or email address), uniform resource locators (URLs) of network-available resources such as web pages, or any combination of these or other representations. Information currency systems are based on documents presented using XML [3] for interoperability between implementations. XML digital signatures [4] are used to provide integrity, message authentication, and signer authentication services in the context of information currency management. In the following, we describe the documents used to represent information currency systems and the documents used to create and manage information currency systems. 2.1. Information Currency Units The basic unit of information currency is an information currency unit. As implemented, this is an XML-formatted document which provides the secret information which is the basis for the currency unit, a cryptographic signature of the secret information, and an identifier for the series from which the information currency unit is derived. An example of an information currency unit follows: ---------- BEGIN INFORMATION CURRENCY UNIT ---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 QjWragyHoQstn8IggdB5WKASAJi8weg/cjINg1Ugw6GpsVWSakSTDzX/y1jW20uEfG9btHQwTuP5 0+G33f46BsPMgVV9Sho1kzoRW4pRFFaShVgO7PL63Tz4AbB/BIrj1KKFL60T+wijvmVA8fZChzGo x7Z9np2WEOjTBS2iC7I= im1KV5cwk2Gj5YjeDTSZVgZy3evHGTcMXDJ8zrdsvlV/FGMUjFYED2bHSe7lUlV9KSbdnTbR5VFR IsYGWR87VK1060yUT8K+PU1n1s/+XN2DeLom8aIrq+jxmIyQ9vo0oL6500FYBUSUhTCZb/LxMZQp QL1dqs2x9+bmR4am1gYbYQfJD4eiaYnMxEnW3PDR1bqwz8deoAPT1BgL2lZNcdTnrrjsmGLbbAtm QST0nAx2+e4okFGCOfJiM0NKALTtLc4kDFMTaJKDqRRcrJrLm2A+hEy13eaGXTIyqsuleN0Qo/T5 2+I1+C48sO2avDUaBvfgYP40ph2Hg4oEiAmByQ== ---------- END INFORMATION CURRENCY UNIT ---------- The root element of an information currency unit is . Individual information currency units, as well as each of the other documents introduced here, belong to the namespace "http://infoeng.org/2005/10/ic#". Bedell Expires March 2, 2007 [Page 4] Internet-Draft Information Currency Docs. and Ops. August 2006 The element contains the certification information that uniquely identifies the information currency unit. This information is presented using Base64 [5] encoding of the bytes that provide the underlying value. Here there are 128 bytes present in the certification information. The certification information should be created as a sequence of random bytes. The value of the information currency unit is based on the fact that the certification information bytes are recognized by the issuance server. The element contains the signature of the certification information, generated using the public/private cryptographic keypair associated with the information currency series. The format of the signature bytes is determined by the algorithm used to generate the signature, according to the specifications for Java signatures as described in [6]. If the algorithm used for generating the signature is RSA, the format of the signature bytes is the PKCS #1 standard. If the signature algorithm is DSA[7], the bytes in the signature are the DER-encoded bytes of the ASN.1 structure SEQUENCE ::= { r INTEGER, s INTEGER }, where r and s are the integer parameters of a DSA signature, as defined in the DSA standard. This signature provides a mechanism for verifying that a particular information currency unit is part of the series associated with the cryptographic keys. The element is both a key identifying the series and a uniform resource locator for the series information document describing the series. The seriesID value is a hex representation of the digest value of the underlying information (the digest value specified in the element below. It can easily be verified that the hex bytes represented by the parameter b5fe373fb6aab8ba6bad6fb933df1934c7740956 are encoded in Base-64 encoding by tf43P7aquLprrW+5M98ZNMd0CVY=. 2.2. Series Information Document An example of a series information document is the following: ---------- BEGIN SERIES INFORMATION ---------- https://leucine.infoeng.org:8443/icws/services/ICWS https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 2006-01-19T15:11:48.000-0800 2007-01-19T15:11:48.000-0800 128 10 Bedell Expires March 2, 2007 [Page 5] Internet-Draft Information Currency Docs. and Ops. August 2006 p1ys5M/mUn+sdrkNUdtEBgmthOdi9HAtFd1c7LDMfT7BcwAFXbkhR0AfEtzCQjf9ky5C27F29J96 fnpgiPVV6ehCsXiauttNhPKv3W58nLzS/2R0OYsT0GmVTmJTg1TI7VAVrhXCxW0v5ezsr/Z0jFEk 7MU8vnuua9sWsY+dtdvh6WiA/fSuYiQMgwdh48/945eBRVwBFww/p6eWbK54gInw7GSCvkvlqijw ePkeJ4ACRVS2iyTLnpHIwqrO50jh8tds820CZxJx48uak1SAhGtMEmFSv2N4Iyl2zMBMhDBZnydB N6qO2vrmo3CPRyAWJKyP32hTMD2GBDNUaLaJyw== AQAB http://www.ietf.org/rfc/rfc3447.txt rwczDGXpUZoHRfMTA9wZrdDdiE0= 2006-01-19T15:11:38.112-0800 WIJuWJlx8+LDr0b2jqJXDZzgO1M= bRGZJ62D/ORLpzZ2ETbynsJk4WmXHKQ34Wx55v6KV3cukf6SgTzDrJhhw/18amfVZKAKw43MZDIr Lrn3JhlspbmKo2ELIT6gtM3+7aS1LyGN1urJ/3FiImMnXHoTdnJPYthxRxH0+Yof4j16FlEuvGkF zgm9IHkFLHI6pULhxkLzCoXB8WTB/fZQGI9Wy0knwOQbI82rMDPXINHnYid+xDzUIzX1gCCIfLw5 R0ZMDiv93qtLLb8meXqEj3uInuohx7o2ZFu169pIUuMCJDO1HaGLHtMKlVvFub68QVZXoN/F1YyX GwMecJdbPYB6E7jd0Wv8oXr6y0rbItiqwcj4cQ== sIMeclnOaDCQ02wZUsZOu6MfqX0HhsoWHLq61K8yWFuqWGnIMz9HWByJd3TGl8uggWphVLa5JDZ0 qqnA8dteZXrDbbsdWcVqTJ4ePggYTHOrN2QddNgtJDKpm/KiSs7Vij4tP3KHwcG3zCYRODRqaQc3 M11B9Wz7228mLacvgi5saQ5bOR+mvJKY6SwumdB6saCrYu1Exd5ipK7MLWpKuxicRh9BJip5Kxov 7opAB4IsBsel/oJtGIv6paoMENa6kzk4w765L2HhhOMcSUOBG6KuXhQKFZJ63EyWJnKP5Uvc2v4P Bedell Expires March 2, 2007 [Page 6] Internet-Draft Information Currency Docs. and Ops. August 2006 RUoJFj16UEqWm7IxO/ybS1y+Vxx9vYHiSrJ6NQ== AQAB tf43P7aquLprrW+5M98ZNMd0CVY= sIMeclnOaDCQ02wZUsZOu6MfqX0HhsoWHLq61K8yWFuqWGnIMz9HWByJd3TGl8uggWphVLa5JDZ0 qqnA8dteZXrDbbsdWcVqTJ4ePggYTHOrN2QddNgtJDKpm/KiSs7Vij4tP3KHwcG3zCYRODRqaQc3 M11B9Wz7228mLacvgi5saQ5bOR+mvJKY6SwumdB6saCrYu1Exd5ipK7MLWpKuxicRh9BJip5Kxov 7opAB4IsBsel/oJtGIv6paoMENa6kzk4w765L2HhhOMcSUOBG6KuXhQKFZJ63EyWJnKP5Uvc2v4P RUoJFj16UEqWm7IxO/ybS1y+Vxx9vYHiSrJ6NQ== AQAB pv2/nA2fkOVgaI61hisGOIbUnPs= DFksztKYNojwgX4DytxvMxbkjGnZtjzxgPoTqlucBBeKuRa90zqxPfxSl3gl0l6u7L8BOdY2TSfN OssHsy2HO9OT0CdQo11z5nW2QY0EJaAe45U/LxYBXY9wlXDorf2gE0Qb64gYck63mJWFq+rE3c9r kSUISzT8I9abdg4/9XTMYs6JjatOo+GXzn1ZdA7meyE5qnNx3qFr0CK0RUOcvOGAdOq+W4SoYIGT uOW85l7+gPrEEAb5dUMd5nj2HxbZ9B7fS6YdpvZbkEtmJkP84QzKMtfP9hYJ4WI5Pb4JG51coVxS Wzwj05d+liptrVoYaAmjTT2PdyoLiRoq21UkNw== Bedell Expires March 2, 2007 [Page 7] Internet-Draft Information Currency Docs. and Ops. August 2006 2n5hDV/7Ca/Q7qKSMwfV5CwN5cfi3FhknQyZ/rEbqc6b1vWzUUT8K9eDpJr+C07WBEbH+DtBmtmn /RzZMW9x9qYHBWMW1fGi3nmPd7DbiOB7CN3J4ir27MSgJgw920qiso0cJVS90HQFGqMajpEjJZIt zMP7aC8gMyiGRxVrsW6LjVwH38eP3+jH8UIXxvG1yiBhN0rFl/YERzYsD7lCXicOPNMvbM+jGuzu 7vp/S/7MeOU8/1vsC+K4/tLFo8xr2HnZFQ9l0bRpN8BXCis80EdtoE6H3pc+Z3zWjAkOUsyBuanb LRRIY1706LbuvsIwfk4uajGzsxajwgqaTRri7Q== AQAB ---------- END SERIES INFORMATION ---------- The series information document above, with a root SeriesInfo element, contains a XML digital signature establishing its authenticity. The element provides the URL of the SOAP [8] endpoint that can be used to perform the information currency operations described below. In the document above, the series indentifier for the series is within the element. This is identical to the element within each information currency unit, and provides a unique identifier for the series, and a URL for accessing the series information document. The and elements provide the times at which the information currency series was created and at which it expires. This time is specified in an ISO-8601 standard format. The SeriesKeyInfo element provides the public key that is used to generate the signature element of each information currency unit. The child elements of SeriesKeyInfo are in the format defined by the XML Security specification [4]. The element provides the total number of certificates in the series. The initial implementation of information currency systems allows only for series with a fixed number of units within the series, although systems for ongoing issuance of information currency are possible. The value of information currency units for economic calculation will be substantially degraded in numerous significant ways if there is inflation of the number of issued units. Bedell Expires March 2, 2007 [Page 8] Internet-Draft Information Currency Docs. and Ops. August 2006 The element provides the number of bytes in the certification information of each information currency unit that comprises the information currency series. The element provides the cryptographic key information for the signatures within the information currency system. In the example, RSA is used to create the signatures of the individual information currency units, and the RSA modulus and exponent are defined in the Modulus and Exponent elements. The specifies the information that the information currency series is based on. The element has a child node , which has exactly one child node. provides the digest value of the canonicalized child node of the element, with the digest value calculated using the algorithm specified in . provides information about the entity that submitted the underlier. specifies the public key used to authorize the issuance. Bedell Expires March 2, 2007 [Page 9] Internet-Draft Information Currency Docs. and Ops. August 2006 3. Information Currency Operations The first implementation of information currency systems provides a SOAP [9] interface to the issuance of information currency. The operations described here are issuance, exchange, and verification. 3.1. Information Currency Issuance Information currency issuance is the process of generating and returning new information currency units based on information submitted by a user. In the ICWS system, the issuance operation is performed by the processing of a document delivered over a SOAP connection. An issuance request for the series above is shown here: ---------- BEGIN ISSUANCE REQUEST ---------- http://www.ietf.org/rfc/rfc3447.txt rwczDGXpUZoHRfMTA9wZrdDdiE0= 2006-01-19T15:11:38.112-0800 WIJuWJlx8+LDr0b2jqJXDZzgO1M= bRGZJ62D/ORLpzZ2ETbynsJk4WmXHKQ34Wx55v6KV3cukf6SgTzDrJhhw/18amfVZKAKw43MZDIr Lrn3JhlspbmKo2ELIT6gtM3+7aS1LyGN1urJ/3FiImMnXHoTdnJPYthxRxH0+Yof4j16FlEuvGkF zgm9IHkFLHI6pULhxkLzCoXB8WTB/fZQGI9Wy0knwOQbI82rMDPXINHnYid+xDzUIzX1gCCIfLw5 R0ZMDiv93qtLLb8meXqEj3uInuohx7o2ZFu169pIUuMCJDO1HaGLHtMKlVvFub68QVZXoN/F1YyX GwMecJdbPYB6E7jd0Wv8oXr6y0rbItiqwcj4cQ== Bedell Expires March 2, 2007 [Page 10] Internet-Draft Information Currency Docs. and Ops. August 2006 sIMeclnOaDCQ02wZUsZOu6MfqX0HhsoWHLq61K8yWFuqWGnIMz9HWByJd3TGl8uggWphVLa5JDZ0 qqnA8dteZXrDbbsdWcVqTJ4ePggYTHOrN2QddNgtJDKpm/KiSs7Vij4tP3KHwcG3zCYRODRqaQc3 M11B9Wz7228mLacvgi5saQ5bOR+mvJKY6SwumdB6saCrYu1Exd5ipK7MLWpKuxicRh9BJip5Kxov 7opAB4IsBsel/oJtGIv6paoMENa6kzk4w765L2HhhOMcSUOBG6KuXhQKFZJ63EyWJnKP5Uvc2v4P RUoJFj16UEqWm7IxO/ybS1y+Vxx9vYHiSrJ6NQ== AQAB 2006-01-19T15:11:38.969-0800 2006-01-19T15:11:58.959-0800 +Zv8hd7qWIsUt1zY8AfVZBhVx6Y= SUaZZ3LdyH9paM+weCe4oTrg8FvF3cH4bE7Mg6wZ2EzdTBoepabArD8Gp7PY6kEXUvEaqKocnreF hCSb1i0eznNQacrdjOdlyqerPCamvQM+kGkZZjgUQBWNZyoqbF0UnWcD0m//prhMBPHKvngTD/FH wuvW/dSMCZ2Uzhhg1UCe6mEsZfNt06rq5MVp/ItYkJqumuxVI8OxNcxVJ+6oQlzNW10ZzO722bmn Vb324kNv0CKLB+nRQa3BptNAFYDBuFhCEY8MR4W6IRxRDPCNt/Js0mXg/CT2YkFm7PjYgbAFp5Oe qDvnnI0MucRGtPvQ/fkdM0VakwXVfgwZEYkbAQ== sIMeclnOaDCQ02wZUsZOu6MfqX0HhsoWHLq61K8yWFuqWGnIMz9HWByJd3TGl8uggWphVLa5JDZ0 qqnA8dteZXrDbbsdWcVqTJ4ePggYTHOrN2QddNgtJDKpm/KiSs7Vij4tP3KHwcG3zCYRODRqaQc3 M11B9Wz7228mLacvgi5saQ5bOR+mvJKY6SwumdB6saCrYu1Exd5ipK7MLWpKuxicRh9BJip5Kxov 7opAB4IsBsel/oJtGIv6paoMENa6kzk4w765L2HhhOMcSUOBG6KuXhQKFZJ63EyWJnKP5Uvc2v4P RUoJFj16UEqWm7IxO/ybS1y+Vxx9vYHiSrJ6NQ== AQAB Bedell Expires March 2, 2007 [Page 11] Internet-Draft Information Currency Docs. and Ops. August 2006 ---------- END ISSUANCE REQUEST ---------- In the request above, the key used to sign the request is used to provide authentication, with authorization for issuance having been previously associated with the cryptographic key used for authentication. The root element of the IssuanceRequest has an Id attribute that is used as a cryptographic nonce, to prevent multiple issuances of information currency for an individual certification request. When the server receives the certification request, it first verifies that the cryptographic key used to sign the request is authorized for issuance. After the signature of the request is verified to be valid and created by an authorized key, an information currency series is issued and returned to the client. The number of information currency units returned after processing the certification request is determined by the issuer. The information currency series returned for the certification request above follows: ---------- BEGIN INFORMATION CURRENCY SERIES ---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 QjWragyHoQstn8IggdB5WKASAJi8weg/cjINg1Ugw6GpsVWSakSTDzX/y1jW20uEfG9btHQwTuP5 0+G33f46BsPMgVV9Sho1kzoRW4pRFFaShVgO7PL63Tz4AbB/BIrj1KKFL60T+wijvmVA8fZChzGo x7Z9np2WEOjTBS2iC7I= im1KV5cwk2Gj5YjeDTSZVgZy3evHGTcMXDJ8zrdsvlV/FGMUjFYED2bHSe7lUlV9KSbdnTbR5VFR IsYGWR87VK1060yUT8K+PU1n1s/+XN2DeLom8aIrq+jxmIyQ9vo0oL6500FYBUSUhTCZb/LxMZQp QL1dqs2x9+bmR4am1gYbYQfJD4eiaYnMxEnW3PDR1bqwz8deoAPT1BgL2lZNcdTnrrjsmGLbbAtm QST0nAx2+e4okFGCOfJiM0NKALTtLc4kDFMTaJKDqRRcrJrLm2A+hEy13eaGXTIyqsuleN0Qo/T5 2+I1+C48sO2avDUaBvfgYP40ph2Hg4oEiAmByQ== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 JULP9aw6YHatjl/zUhwTa3Fabe+bfZlPbJI4BSwFxmzyYXebtOsR3fB84BY9ax1ZiNM8JsOtBkHi eQ6IIdl3ZZazVAmJLYqVj4Tx6EWRGZZSmes133vpfq28dgF82qWG5xYippqdcY6viLC/he/QzUE6 gQ+LZ9z30QVBpEasRgA= ednMkmUIN1i6KkLnYK88lW3YF7R3xsiJ6uFio5e/VytAaQ3imPf5gtDvMOdDWcJwZkHKKVAcuEIq bSBHc95bMfS2GHLYQ5ZT3usPbq4hPjiPAJpcEctiP7EMIw70TUc0cKeCFeGz5hcwVWRd4pRWZey2 aIA4IfmZwRV1qtxxiRRMjtpZjQRayGHnSu7pe9BnSODL4+3I7P/W+ITjcu+PjbH+Hef6nWL/Q+bQ lpODClyn4ku+YpTi/xP8prb8ndQ3H8aVNhrTKUOChHubz5FwI5s6Eo5qQA97JltkfJQWL2iTiic9 CpU4mvtLoMzJDHfMfxKocuM8wXyC0eIpPeKsyA== Bedell Expires March 2, 2007 [Page 12] Internet-Draft Information Currency Docs. and Ops. August 2006 https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 ymjD2QUbwqVsg5J2BkdNR0fnLj95xbD4DIH68Nt10Yv5mA0IV0KbmG/Bzh90XbnrTZW+wRCCCJ0x kMmlj1r3xSNSnB8GPreUDBxPpV9SVIc7R7OPcKNs9EpH2t268nZF5Fy5PVENOQRbRgFyUdVJ7R12 k5tp5nVCsEkbx8eI7Tw= G7CVRU/xtftykp4E0gT2AFO0/77ijdBxv5Fpp7/z/0Ryy8keyxRrIiHdrCTXIWxe3m9RnlVLmGtw h93Fkhv4AWNpGd5pxOtGofJDCTVguzR71vYaS3DkMYSGvSafH3xdIoC/dXwDetQOp4pbgpzyS3UI Wi0SkqXFHe428wMvJx5cZSmKQ57rCXd+7iRJOOUUsmxqLT6a1EnFybJV/KEv8yaHoGDP56b3FdJU HTZNUsqxoslycEYMVlPMsl9NKQ9Wlm9kW2rmgQBmeNqZQ/YK/m86sw5atGT5hnxpFSrH9GsE3OO9 QB1tBftEzDjnVDZ2WzqXWHyKkoPArClcugxIyw== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 oYOoPbgTw3VMfHIV6tbkI8CnsvUE+WGsBfGpF8+lMyVadnA/2gSaRgFmRgwi+EW22m7G10LdKvLo dVs3AoNkZdKJmqL6osr1rksaoOSJFQJMi1f4lj64dHkO8JJQTjw447PksHI7IHb24TYIowF9CER+ dP2cx4DL6Gj9e/XGBSs= Q+UNw84a4bW/bE4g7JMUqB+IHIat7gzD5OlUndA70t+3oUGw52y4VxnAOVT47SjNrN4hYF5Usw+J t2h3RxwaggQlKDIFyGjSn8AqQ02aUoOj+qGlbJ/rw0kPCfH4mmnApGp9GogTIXHStL+ieLUPRa4G a+C24EJs0t7tVGXBEnLLt4qFqrF/oy+E58urMBTSYIu1CjWXqSEnnroP45vwwIVrPKao997EyhmX pDxUqOOtvrp5nrigSaOxRn0hgQ4tce0n7OvXn3DnHVbP0QwVaP0EAqSF24oFmTZMl+iOWlNAoTn6 JsuH1Jsb+ywtaiuHJGbPgC/745W3aXQJ/9PLLA== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 3Zk2mrvOp3wG26Ow/KA8zurjzrQvzOiz8TShYQ55iwIORsd69+lUV8dmGQ43rgtGCof+uVAbXR9K LZGpOvg6a1N8Mtj3erYrsHEPMqSxwq2Hs9c4zcDZCVOSkQw3M9bV4cqcUQtlLB8bp/spmKxS5cJC Xx0iZGi41kOxnld8M0k= XtFvEDVxGRIjrBHO5FQ6l/cMNzKXaTgId5cli/y2STqlcIG6NhgeVWwjNLBLLcPMgU6v9GV7hp7D CyNK1VwUx3CE7g+l/kQo7YKyx+h4JCVFZsqDE2olDv8/eBULGzZ0CWIoQG4jS7YPuCTDn+0NL1i1 CE9bUdfQMsbZpz9vCS2O9DPyMMIAaBRwXayTP+haNUbLXJTjhsBywpUCghA+IsBC0irMfl8T0DeY +Nh4w1tJe+F1QtbiOf+n+Z7FqI6R4ue+aOj7GWrq4R/VcLG1gyjgDxFVvveDSVUDe8mDSxY3IVmd qNYaMdadT0qA4m+uM/1Qu1+ggMUPNtj8Cxxluw== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 svIIMtA+5O3qAmoenu1psfXTNnzz3rPOtnxvqNxKOQDzRQIF7hwlEsOUHhv0otvpLosXcqz1GR2U ibuN5l5NhfTiQirZLCmDlZW08/wzZseK7JnbKeiRk9GPkqVQKYu6Y5Fs0fGYDHcGGixT9LDZViJz +ezdwwv6EMKipG5oV7Y= i/FVesnkbCD7gfO2um/iC1+1CupDUplaSVBS6r+awdxClzL1VGgaU7LCInn2sIHGXEgLnMi3dtX3 MYiQBfYp/BuRdbGdUbHI01uoiMds1QUyIks3BCQKxodxM098IHWHGdilL1IYsQSaVQWePY7qWa6z b/PhpNycvYOB7FqNthoHJ3HZl8b3uXg4zagWETRIkK/RXB0VvcDo7998uwAqLNG+0KMaukRFU/jt whHgQFPPTIoK4wYLwINywN5yoY+qbHBjKwQ5D3nJsqtyL7azX1qY1P1bZhrQFgLtQt7xWhxAMR6U ha/+fsWidiwqnxyE8SuU6wHQ/TP5/74XPgCJBw== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 9XkvwOYVah5p/6OBigc4m1MHxzrCPhYI4o/rC6CAEcPNt3U6xd2nF3Pw3WUbkYxvi2bHOmA8Y+se u+e6RFhn/RSvChY7mydmSFMLPEmG2aGE0dRnCVE+hAQZgv0a0XiJF3I/sg37/d/sHpQwGC+9UNyC Bedell Expires March 2, 2007 [Page 13] Internet-Draft Information Currency Docs. and Ops. August 2006 U8S0sUVGHQpO2Wq6Xmg= A3JmcB0JkmPtMYQUXgxDAlf5Gy4fgTlK17Su/iaf3FNQ/bFt7DldgrvljL1Q30aTfCvQGJoeG2HN TEWNvHjTwiVA81uL/cu22yw0sOGEd6cuxf8P2WH10uqCLrL+5rMCTVZiWAei31dteqR4aZSe9Lv8 DIo4aYLCSxo2znDUvyDgjKTlvwIT2su06WUNnSPRGItZdUxvPm+jtlXRiTTQFip16m0GyJV5JXeD Ty2qmirHkPksl91+ZHu0zOO9kjyi+gePUJteK1JVLCYSU6QpYbnfWrBe1KlbA4WsHQX1C217+1pq /zooeWiv+rjUEDot42U1g427fv+qEMQqKIIHtQ== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 3YTX5aip+WfL373XG88XQdruxg1s5BXuWszKxV/iCJ7QCWpT7EUAsK6+RDJhvJ2b7E/CDBsVgkfw H0bBz3Xh90NXl47pxRTg46bEwxNB0PZmvg1BwwYB4t9428wR/k/3SC1gfbCJZgt35vZTGs5ICdYz HEt4vZc5eg+jvtU9UZ0= i/RthTFVEXXfdg21Bps+dY3q0dP5Dj/di1ncx8AyVQLIzesUmuUsZrgKFUPI4Wbs3qjnTEz0X+e6 XSEq73Vu/jIgNa+zBdwXdrDL6D5dSFA59Owjz4CDG9Oz3iWMrKgJKN6g0+QntxUTbKBGwXaccebD 06e9L6THJxEHul5GNikEvWOxxhvw0loqD2sHvg7z9g3z/TLStLRNQusXtvqzUjGCsxDjuHsVRoDP V8v0C0DTm+gCMEE3xNEwwH/powdM2cBAuPaT7CQNc+pMjLoamq/1/gSd0EPVmht3Lnd6Vd4GvvAl /CbikFZzq8APpkfqXMBoaPsRIXN6Fc4pqFEDbg== https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 BnWPwYmPhATeTV/bl50cW0J0V+NwuP1WvAlWyHTx02G0FzB7ukuBPL+Weo1UMqEcl+n9RyP1UnPJ rgavbBFNRV5SkT8WduFIDyoYO3BIMn1CWS8QnBKR1PgZKJNn37/ZPxkXWReApVIlwofS6vUzpb4E VNZWQKRqWjMiXBvOkTw= ECT0UT08DwzphUQadOljAFpUcqg+0VzRVAyz2kGbh1iOf1QYil5l7CBCmq9a0Jpt4BLKx+J1oGAG G2BlWu9NyPitkYa2GntnfqG5ytP+YokEVPERxdaCFfaQLu/lBrsDpP1jqYDHAnXuuOaigphxJZ67 iL4gy743pkarafWiXyV9u1SIT6bOOSXdEJj94QqgDhnAwAOybbKwN4mt1fUR4mROhZJvBRjUyhh7 y+3h4z0pA0lK+eNW9XcpuvzwgpO4JLXwDtaMxH9WS8T7HAQa2YHdvxhLVNculHiwJ563z7wV76+a 5rP83CfW+E7kfzqnxub3zgZThDI3X0xlwkcAGA== EXF/DD2pRhKkZ3RRwzAf89dHWac= vYQOWZuClZUVm5aUVdEB97HWFXgVy3O8uWXeTV00pHZip6EsaJlmTzsOe9hmETLkpz5X/JHWqg6z ghgIVlmB4xwJKE4AQbwBtb0gjTf8YyI4BuAaE4XiazleMOi5rJXOpfyKsWX5stpFwl+TZW6SdB2b PvPFY6o/nvZU4Ix1LzVJMkS7pTNO1/2wAfr9eoNWVE8qhrTjlZAgQxZkY7hJULRwxnxNkBKosEEJ ir2rDtnBD/ReC3r7tnZJKBGDwmE8traegGgz0u5eFlm20E8LT0gF0K6gWoqDDdJy6FUGQIbHVjxL CDZTys9rOxUQSiCJemOW7SI4HOoaL6u1eRXPTw== Bedell Expires March 2, 2007 [Page 14] Internet-Draft Information Currency Docs. and Ops. August 2006 2n5hDV/7Ca/Q7qKSMwfV5CwN5cfi3FhknQyZ/rEbqc6b1vWzUUT8K9eDpJr+C07WBEbH+DtBmtmn /RzZMW9x9qYHBWMW1fGi3nmPd7DbiOB7CN3J4ir27MSgJgw920qiso0cJVS90HQFGqMajpEjJZIt zMP7aC8gMyiGRxVrsW6LjVwH38eP3+jH8UIXxvG1yiBhN0rFl/YERzYsD7lCXicOPNMvbM+jGuzu 7vp/S/7MeOU8/1vsC+K4/tLFo8xr2HnZFQ9l0bRpN8BXCis80EdtoE6H3pc+Z3zWjAkOUsyBuanb LRRIY1706LbuvsIwfk4uajGzsxajwgqaTRri7Q== AQAB ---------- END INFORMATION CURRENCY SERIES ---------- 3.2. Information Currency Exchange The sole possession of information currency units is equivalent to their secrecy, and the value of information currencies is based on their scarcity. Therefore, when an information currency unit is exchanged between individuals in a market trade, it is necessary to exchange that information currency unit with the issuer so that the original ICU is invalidated and a new ICU is issued in its place. The exchangeCertificate operation takes as an input string the original certificate. If the input information currency unit is valid, the old information currency unit is invalidated and a new information currency unit is generated and returned. If the input information currency unit is invalid, the original information currency unit is returned unchanged. The result of the certificate exchange operation, starting with the information currency unit above, is shown below: Bedell Expires March 2, 2007 [Page 15] Internet-Draft Information Currency Docs. and Ops. August 2006 ---------- BEGIN ORIGINAL INFORMATION CURRENCY UNIT ---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 QjWragyHoQstn8IggdB5WKASAJi8weg/cjINg1Ugw6GpsVWSakSTDzX/y1jW20uEfG9btHQwTuP5 0+G33f46BsPMgVV9Sho1kzoRW4pRFFaShVgO7PL63Tz4AbB/BIrj1KKFL60T+wijvmVA8fZChzGo x7Z9np2WEOjTBS2iC7I= im1KV5cwk2Gj5YjeDTSZVgZy3evHGTcMXDJ8zrdsvlV/FGMUjFYED2bHSe7lUlV9KSbdnTbR5VFR IsYGWR87VK1060yUT8K+PU1n1s/+XN2DeLom8aIrq+jxmIyQ9vo0oL6500FYBUSUhTCZb/LxMZQp QL1dqs2x9+bmR4am1gYbYQfJD4eiaYnMxEnW3PDR1bqwz8deoAPT1BgL2lZNcdTnrrjsmGLbbAtm QST0nAx2+e4okFGCOfJiM0NKALTtLc4kDFMTaJKDqRRcrJrLm2A+hEy13eaGXTIyqsuleN0Qo/T5 2+I1+C48sO2avDUaBvfgYP40ph2Hg4oEiAmByQ== ---------- END ORIGINAL INFORMATION CURRENCY UNIT ---------- Bedell Expires March 2, 2007 [Page 16] Internet-Draft Information Currency Docs. and Ops. August 2006 ---------- BEGIN NEWLY ISSUED INFORMATION CURRENCY UNIT ---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 Tix2N1CfQNacxkj12MsS/8C6YJR6xm8cpzMK7kFRieJpCKj9IlKAKMTV10+Yy5VucDdP5+HLCyXE Dv8KSscLV8xca+O9q8Nl1n+NT39r2lMY86cvmt4GUrSIfNwxJsLaB+qBVsK9/Rd8S42TaOambbZq 19Y8o9bnC5AjEBVLXG0= BvsKhiS/X8lnFIcKolMmbsZ5tR44bJyUzhco6b10oZbLtrmmB/uNOQ4AiYuED0/ogAjWHuShxh49 550RiWqY0JwnH8M+dd9ysep1ZwuXsUqNeMQPLzIFMbbPsgOSIFoc+suw1zzplY9gfXnDWz0E2zR1 MVwj/y9LIwH3EU9srrYarP4NmyHNA/iaOVSM5WqzgMCqsb3v96inzLLNH9oIOfdNd1yal/FW/Hoj TyZ0N3Ng6BwLb1TXIIR8FD8BS2WJ+RK67YRN+CMHXNytngKbx8wMsdpmEJ7hYFL+dexJZntCLDp7 cbWd0H2Vt6+/l5wAqJkR2Bo4febEoVc5lBRafw== lShRBUQTp1HYTJ/04mSiPj7mH94= LJHPUeVEjwyuQkXWjJzzgvQrLOXLzX83beVg69YINBgZMGK8DA+eM1hn0vW28lwisGSLGhe9rbeQ vqjhU4MYrNyRHQUUz2ipeEeCLkT+WD8y3Qx8D+OfGCYcYp2P+RfqnIOnu/uiREgKacjUSXvrlfbm g1edqJrdHoJ1ZGcA/nF305g+0K6Bk/W0Pf4GFLFgsKj8JRcZ0noFJUD72wd8TMAsq4hVMlGItxsM bYPYFyF+QQvJjDjIhr3BYGFtLseJyuCcjc71KQm0ngUhvSoVl5ED5rhsyInuE7l0J0zyjUgFyrYZ bfWoNRaSDrwTkvY/Wix+6XRv8ymTHal54nnKzg== 2n5hDV/7Ca/Q7qKSMwfV5CwN5cfi3FhknQyZ/rEbqc6b1vWzUUT8K9eDpJr+C07WBEbH+DtBmtmn /RzZMW9x9qYHBWMW1fGi3nmPd7DbiOB7CN3J4ir27MSgJgw920qiso0cJVS90HQFGqMajpEjJZIt zMP7aC8gMyiGRxVrsW6LjVwH38eP3+jH8UIXxvG1yiBhN0rFl/YERzYsD7lCXicOPNMvbM+jGuzu 7vp/S/7MeOU8/1vsC+K4/tLFo8xr2HnZFQ9l0bRpN8BXCis80EdtoE6H3pc+Z3zWjAkOUsyBuanb LRRIY1706LbuvsIwfk4uajGzsxajwgqaTRri7Q== AQAB ---------- END NEWLY ISSUED INFORMATION CURRENCY UNIT ---------- Bedell Expires March 2, 2007 [Page 17] Internet-Draft Information Currency Docs. and Ops. August 2006 The newly issued information currency unit is recognized by the issuer as valid, while the previous information currency unit is no longer accepted as valid by the issuer. 3.3. Information Currency Verification In order to verify with the issuer of an information currency series that an information currency unit is valid, a verification certificate is prepared based on the content of the information currency unit. The certification information from the information currency unit is digested and placed in a element, and the series ID is placed in a element, for a document with a root element of , as shown here: ---------- BEGIN INPUT VERIFICATION CERTIFICATE---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 VIRQSn+nFBHswPK759ElGNwDbXQ= g+mUulK9N/H6H+wYfnrENTvGrNg= ---------- END INPUT VERIFICATION CERTIFICATE ---------- Bedell Expires March 2, 2007 [Page 18] Internet-Draft Information Currency Docs. and Ops. August 2006 ---------- BEGIN OUTPUT VERIFICATION CERTIFICATE---------- https://leucine.infoeng.org:8443/icws/seriesInfo?seriesID=b5fe373fb6aab8ba6bad6fb933df1934c7740956 VIRQSn+nFBHswPK759ElGNwDbXQ= r03nlAik/KOcnXRX0T5fh5ZWppk= 9lfb7zjOdbRclXj5c1nDaZPj5Pw= jLfWBPTo+tsxNO2uZwWKg+SBYXYpj5NPaUY9kIeybIUnVhR/UElEke0VEVfyHb0besodaN8LQVgM cVkBTwQa1susUf7+++umUSJdFY2M9uRShq7Lgv5FBnXc1E4Y+JgRUPFVgg1nSh8GcLAKDktpnLXb +2L5MjJsQ4/MWo5LZb9uZ5UmlR/dldkz8FVsVJm4uTgw0jlDjRRXadzuDFkXpY0OLVZc7c/mMT7Y 5hkUCbw0J71qdx8wrYuWZ4EJcX6GrYvVm0eBcDOz5fPfB5KxB7R0U34UlL70dbxw9buIjk1KXv4z zHJ/F05LNh7h78CKYvj1gI14bOkm5AjU5bnqHg== p1ys5M/mUn+sdrkNUdtEBgmthOdi9HAtFd1c7LDMfT7BcwAFXbkhR0AfEtzCQjf9ky5C27F29J96 fnpgiPVV6ehCsXiauttNhPKv3W58nLzS/2R0OYsT0GmVTmJTg1TI7VAVrhXCxW0v5ezsr/Z0jFEk 7MU8vnuua9sWsY+dtdvh6WiA/fSuYiQMgwdh48/945eBRVwBFww/p6eWbK54gInw7GSCvkvlqijw ePkeJ4ACRVS2iyTLnpHIwqrO50jh8tds820CZxJx48uak1SAhGtMEmFSv2N4Iyl2zMBMhDBZnydB N6qO2vrmo3CPRyAWJKyP32hTMD2GBDNUaLaJyw== AQAB ---------- END OUTPUT VERIFICATION CERTIFICATE ---------- The three components of of the original verification certificate are the series id (seriesID), the digest value (digestValue), and the random value (randomValue). The digest value is the SHA-1 digest value of the bytes in the certification information. The random value in the verification certificate is a random base-64 encoded Bedell Expires March 2, 2007 [Page 19] Internet-Draft Information Currency Docs. and Ops. August 2006 byte array, with a length of x bytes. The returned verification certificate contains two fields identical to the original verification certificate, the seriesID and digestValue, representing the original certificate. The randomValue in the returned certificate provides the information that the client can use to verify that the original certificate is valid. If the digest value presented by the client in the original verification certificate is valid, the signature value within the original ICU is used as a shared secret. The randomValue in the returned verification certificate is then the SHA-1 digest value of the byte array formed by the concatenation of the signature bytes and the random bytes provided by the client. To verify that this randomValue signifies that the certificate is valid, the client can use the randomValue generated by the client and the signature bytes within the information currency unit to prepare the expected digest value, and compare the expected returned randomValue with the received randomValue. To verify that the server has the private key used to generate the signature bytes in the original information currency unit, the XML signature of the response verification certificate is generated using the series-specific private key. The fact that the verification certificate uses a digest value means that a holder of an ICU can provide a third party with a verification certificate to demonstrate that they possess a valid ICU. Upon receipt of the verification certificate and the randomValue expected to be returned for that verification certificate, the third party can transmit the verification certificate to the ICU issuer for verification that the generator of the verification certificate possesses a valid certificate. Bedell Expires March 2, 2007 [Page 20] Internet-Draft Information Currency Docs. and Ops. August 2006 4. Information Currency Applications Information, whether open-source or closely guarded, can have undeniable economic value, and information currency is designed to quantify this value and enable it to be utilized in more general economic calculation. The first application of information currency is the management of software development through information currency marketplaces. Upon receiving information currency for information submitted, the creators of information have economic instruments that they may sell to compensate them for their effort. Bedell Expires March 2, 2007 [Page 21] Internet-Draft Information Currency Docs. and Ops. August 2006 5. Security Considerations The participants in an information currency transaction should take care to ensure that their transaction messages are encrypted. This is because an attacker intercepting the information currency exchanged by particpants can potentially steal the economic value of the information currency by exchanging the intercepted information currency to obtain exclusive ownership for themselves. XML digital signatures provide authentication and message integrity for information currency documents. The information currency issuer establishes its identity using public-key cryptography. Newly-issued information currency is signed with the private key of the issuer, and each information currency unit is signed with a per-series key. The per-series private key is used to create the elements within each exchanged information currency unit, and the information currency unit newly-issued after an exchange is signed with the issuer's private key. The issuer uses the series private key to sign responses to verification certificates. The use of public-key cryptography offers the possibility of using economic transactions to evaluate the trustworthiness of a public-key infrastructure, but if or how this will be realized in practice remains to be determined. Bedell Expires March 2, 2007 [Page 22] Internet-Draft Information Currency Docs. and Ops. August 2006 6. IANA Considerations This document has no actions for IANA. Bedell Expires March 2, 2007 [Page 23] Internet-Draft Information Currency Docs. and Ops. August 2006 7. Acknowledgments This work is dedicated to those who have made economic progress possible. Bedell Expires March 2, 2007 [Page 24] Internet-Draft Information Currency Docs. and Ops. August 2006 8. References [1] von Mises, "Human Action", 1996. http://www.mises.org/humanaction/chap13sec1.asp [2] "Information Currency Web Services (ICWS) software". http://infoeng.sourceforge.net [3] Bray, T., Paoli, J., Sperberg-McQueen, C., Maler, E., Yergeau, F., and J. Cowan, "Extensible Markup Language". http://www.w3.org/TR/2004/REC-xml11-20040204/ [4] Eastlake, D., Reagle, J., and D. Solo, "(Extensible Markup Language) XML-Signature Syntax and Processing", RFC 3275, March 2002. [5] Josefsson, S., "The Base16, Base32, and Base64 Data Encodings", RFC 3548, July 2003. [6] "Java Cryptography Specification: API Specification & Reference". http://java.sun.com/j2se/1.5.0/docs/guide/security/ CryptoSpec.html [7] US National Institute of Standards and Technology, "Digital Signature Standard (DSS)", FIPS 186-2, January 2000. [8] Gudgin, M., Ed., Hadley, M., Ed., Mendelsohn, N., Ed., Moreau, J., Ed., and H. Nielsen, Ed., "SOAP Version 1.2". http://www.w3.org/TR/soap12 [9] "SOAP Version 1.2 Part0: Primer". http://www.w3.org/TR/2003/REC-soap12-part0-20030624/ Bedell Expires March 2, 2007 [Page 25] Internet-Draft Information Currency Docs. and Ops. August 2006 Author's Address J. Patrick Bedell http://infoeng.org Bedell Expires March 2, 2007 [Page 26] Internet-Draft Information Currency Docs. and Ops. August 2006 Full Copyright Statement Copyright (C) The Internet Society (2006). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. 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Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org. Acknowledgment Funding for the RFC Editor function is provided by the IETF Administrative Support Activity (IASA). Bedell Expires March 2, 2007 [Page 27]