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Supporting a fixed transaction rate with a variably-backed logical cryptographic key

  • US 9,438,421 B1
  • Filed: 06/27/2014
  • Issued: 09/06/2016
  • Est. Priority Date: 06/27/2014
  • Status: Active Grant
First Claim
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1. A computer-implemented method, comprising:

  • under the control of one or more computer systems that execute instructions,providing an application programming interface through which requests may be submitted to cause performance of cryptographic operations using a cryptographic key associated with a key identifier;

    determining an individual cryptographic key usage rate limit;

    receiving an application pro ramming interface request specifying a key identifier usage rate associated with the key identifier;

    determining, based at least in part on the individual cryptographic key usage rate limit and the key identifier usage rate, a minimum number of cryptographic keys for a set of cryptographic keys associated with the key identifier such that, as the cryptographic operations are distributed among individual cryptographic keys of the set as part of processing requests associated with the key identifier, usage rates corresponding to each individual cryptographic key of the set are at or below the individual cryptographic key usage rate limit; and

    causing the set of cryptographic keys to have at least the minimum number of keys determined.

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