Every single cryptographic algorithm definition in just this specification employs the next specification conventions. A bit, titled "Registration"
If If your title attribute of hash is "SHA-512": In case the "alg" subject of jwk is existing and is not "HS512", then toss a DataError. If not, Should the title attribute of hash is outlined in A further applicable specification: Accomplish any crucial import steps defined by other relevant specifications, passing format, jwk and hash and getting hash. If usages is non-vacant and also the "use" subject of jwk is present and isn't "sign", then throw a DataError. Should the "key_ops" discipline of jwk is current, and is invalid As outlined by the requirements of JSON Internet Important or does not have all of the desired usages values, then throw a DataError. Should the "ext" industry of jwk is present and has the value Wrong and extractable is legitimate, then throw a DataError. Otherwise:
This segment describes the standing of this document at the time of its publication. Other paperwork may well supersede this doc. A list of latest W3C publications and the latest revision of this technological report are available inside the W3C technical studies index at .
If your namedCurve member of normalizedAlgorithm just isn't a named curve, then toss a DataError. If usages contains a worth which is not "validate" then throw a SyntaxError. If namedCurve is "P-256", "P-384" or "P-521": Permit Q be the elliptic curve level over the curve determined with the namedCurve member of normalizedAlgorithm identified by performing the conversion techniques described in Section 2.
To specify additional hash algorithms to be used with ECDSA, a specification have to define a registered algorithm that supports the digest Procedure. To specify an additional elliptic curve a specification ought to define the curve identify, ECDSA signature actions, ECDSA verification steps, ECDSA generation ways, ECDSA vital import actions and ECDSA crucial export methods. 23.2. Registration
The intent driving This can be to permit an API which is generic sufficient to allow conforming person agents to expose keys which can be stored and managed specifically with the person agent, that may be stored or managed making use of isolated storage APIs which next page include for each-person vital retailers furnished by some working methods, or inside essential storage units for instance protected components, whilst allowing abundant Website applications to govern the keys and without requiring the online application know about the character of your fundamental key storage. 4.two. Cryptographic algorithms
If the namedCurve member of normalizedAlgorithm is a price specified in an applicable specification: Conduct the ECDSA critical era actions laid out in that specification, passing in normalizedAlgorithm and resulting in an elliptic curve vital pair. If not:
If hash is not undefined: Let normalizedHash be the results of normalize an algorithm with alg set to hash and op established to digest. If normalizedHash is just not equivalent into the hash member of normalizedAlgorithm, throw a DataError. In case the "d" area of jwk is existing:
encodings are manufactured or accepted. Allow final result be a whole new ArrayBuffer linked to the relevant global object of this [HTML], and made up of info. If structure is "jwk":
Should the "d" area of jwk is current and usages incorporates an entry which isn't "signal", or, In case the "d" field of jwk just isn't existing and usages includes an entry which isn't "confirm" then toss a SyntaxError. If the "kty" area of jwk isn't a situation-delicate string match to "RSA", then toss a DataError. web link If usages is non-vacant and the "use" area of jwk is current and isn't a scenario-sensitive string match to "sig", then toss a DataError. Should the "key_ops" field of jwk is existing, and is invalid according to the necessities of JSON World wide web Important or doesn't include all of the desired usages values, then throw a DataError.
Set the [[form]] interior slot of essential to "community" Allow algorithm be a fresh EcKeyAlgorithm. Established the title attribute of algorithm to "ECDSA". Set the namedCurve attribute of algorithm to namedCurve. Set the [[algorithm]] interior slot of critical to algorithm. If structure is "pkcs8":
The "spki" essential format With this specification implies subjectPublicKeyInfo and therefore is probably not appropriate when what is required can be an AlgorithmIdentifier for transportation. C. Mapping concerning Algorithm and PKCS#8 PrivateKeyInfo
throw a NotSupportedError If performing the Procedure leads to an mistake, then throw a OperationError. If size is null:
If usages consists of an entry which is not "deriveKey" or "deriveBits" then throw a SyntaxError. Allow privateKeyInfo be the result of jogging the parse a privateKeyInfo algorithm over keyData. If an error occurs whilst parsing, toss a DataError. Should the algorithm item identifier field from the privateKeyAlgorithm PrivateKeyAlgorithm subject of privateKeyInfo will not be equal on the id-ecPublicKey or id-ecDH object identifiers described my website in RFC 5480, throw a DataError. Should the parameters discipline of the privateKeyAlgorithm PrivateKeyAlgorithmIdentifier area of privateKeyInfo is not existing, toss a DataError.