The 2-Minute Rule for CryptoSuite
If the counter member of normalizedAlgorithm does not have duration sixteen bytes, then throw an OperationError. If the size member of normalizedAlgorithm is zero or is bigger than 128, then toss an OperationError. Let ciphertext be the results of performing the CTR Encryption Procedure described in Section six.5 of [NIST SP800-38A] applying AES given that the block cipher, the contents of your counter member of normalizedAlgorithm as being the initial value of the counter block, the length member of normalizedAlgorithm as being the enter parameter m towards the typical counter block incrementing operate outlined in Appendix B.
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Carry out any key import techniques outlined by other applicable technical specs, passing format, spki and obtaining hash. If an mistake transpired or there are no applicable technical specs, throw a DataError. If hash is just not undefined: Allow normalizedHash be the result of normalize an algorithm with alg set to hash and op established to digest. If normalizedHash just isn't equal to the hash member of normalizedAlgorithm, throw a DataError. Allow publicKey be the result of carrying out the parse an ASN.
If usages contains any entry which is not one of "encrypt", "decrypt", "wrapKey" or "unwrapKey", then toss a SyntaxError. In the event the duration member of normalizedAlgorithm is just not equivalent to at least one of 128, 192 or 256, then throw an OperationError. Generate an AES crucial of length equal into the length member of normalizedAlgorithm. If The crucial element generation stage fails, then throw an OperationError.
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The deriveKey system requires the deriveBits Procedure for the essential derivation algorithm plus the get vital length and importKey operations to the derived key algorithm.
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This document was produced by a gaggle functioning under the five February 2004 W3C Patent Coverage. W3C maintains a general public list of any patent disclosures designed in connection with the deliverables from the group; that page also includes Recommendations for disclosing a patent.
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toss an OperationError. Enable additionalData be the contents from the additionalData member of normalizedAlgorithm if present or even the empty octet string if not. Enable C and T be the outputs that consequence from doing the Authenticated Encryption Functionality explained in Portion 7.1 of [NIST SP800-38D] working with AES given that the block cipher, the contents of the iv member of normalizedAlgorithm because the IV input parameter, the contents of additionalData my site since the A enter parameter, tagLength as being the t pre-requisite and the contents of plaintext as being the enter plaintext.
Should the [[variety]] inner slot of critical is just not "personal", then throw an InvalidAccessError. Let label be the contents on the label member of normalizedAlgorithm or perhaps the empty octet string Should the label member of normalizedAlgorithm is just not current. Complete the decryption operation defined in Part seven.one of [RFC3447] Along with the critical represented by important as the receiver's RSA non-public key, the contents of ciphertext as being the ciphertext to become decrypted, C, and label since the label, L, and Using the hash function specified because of the hash attribute on the [[algorithm]] inside slot of essential as the Hash alternative and MGF1 (outlined in Portion B.
If usages is made up of an entry which isn't "indication" or "validate", then toss a SyntaxError. Generate an RSA crucial pair, as outlined in [RFC3447], with RSA modulus size equivalent for the modulusLength attribute of normalizedAlgorithm and RSA general public exponent equivalent on the publicExponent attribute of normalizedAlgorithm. If generation of The important thing pair fails, then toss an OperationError. Enable algorithm be a brand new RsaHashedKeyAlgorithm dictionary. Established the name attribute of algorithm to "RSASSA-PKCS1-v1_5". Established the modulusLength attribute of algorithm to equivalent the modulusLength attribute of normalizedAlgorithm. Set the publicExponent attribute of algorithm to equivalent the publicExponent attribute of normalizedAlgorithm. Established the hash attribute of algorithm to equivalent the hash member of normalizedAlgorithm. Enable publicKey be a brand new CryptoKey object, related to the related world object of the [HTML], and symbolizing the general public essential on the generated essential pair.