US 8,572,231 B2 · Variable-length nonce generation

Abstract

Methods and systems for obtaining a scalable variable-length nonce are provided. An exemplary method for obtaining a scalable variable-length nonce includes obtaining an initial nonce candidate. The exemplary method also includes transmitting a query to determine whether the initial nonce candidate has already been assigned. When the initial nonce candidate has already been assigned, a combined nonce candidate is obtained. The combined nonce candidate includes characters appended to the initial nonce candidate. An exemplary system for obtaining a scalable variable-length nonce includes a transmitting engine that transmits a request associated with a current token. The exemplary system also includes a receiving engine that receives a message associated with the current token. The exemplary system further includes a token acquiring engine that obtains a new token, and an appending engine that appends the new token to the current token.

Claims20

Dependent claims

A computer-implemented method for obtaining a nonce, comprising:

determining a nonce space of a first string comprising at least one character;
when the first string is within a given nonce space, sending a request for a nonce to an authority that tracks nonces within the given nonce space;
when the first string is within the given nonce space, determining whether the first string has been assigned as a nonce in a database;
when it is determined that the first string has been assigned as a nonce in the database, generating a combined string by appending a second string having at least one character to the first string;
determining whether the combined string has been assigned as a nonce in the database, the combined string being within the given nonce space;
and
when it is determined that the combined string has not been assigned as a nonce in the database, assigning the combined string as a nonce in the database.

4 more elements

A system for obtaining a nonce, comprising:

at least one computing device comprising a processor and memory;
a transmitter, implemented on the computing device, and configured to:
(i) determine a nonce space of a first string comprising at least one character, and
(ii) when the first string is within a given nonce space, send a request for a nonce to an authority that tracks nonces within the given nonce space;
and
the authority, implemented on the computing device, configured to:
(i) when the first string is within the given nonce space, determine whether the first string has been assigned as a nonce in a database,
(ii) when it is determined that the first string has been assigned as a nonce in the database, generate a combined string, wherein when the authority generates the combined string, the authority is configured to append a second string comprising at least one character to the first string,
(iii) determine whether the combined string has been assigned as a nonce in the database, the combined string being within the given nonce space, and
(iv) when it is determined that the combined string has not been assigned as a nonce in the database, assign the combined string as a nonce in the database.

7 more elements

A computer readable storage device encoded with a computer program, the program comprising instructions that when executed by one or more processors cause the one or more processors to perform operations comprising:

determining a nonce space of a first string comprising at least one character;
when the first string is within a given nonce space, sending a request for a nonce to an authority that tracks nonces within the given nonce space;
when the first strung is within the given nonce space, determining whether the first string has been assigned as a nonce in a database;
when it is determined that the string has been assigned as a nonce in the database, generating a combined string by appending a second string having at least one character to the first string;
determining whether the combined string has been assigned as a nonce in the database, the combined string being within the given nonce space;
and
when it is determined that the combined string has not been assigned as a nonce in the database, assigning the combined string as a nonce in the database.

4 more elements

Dependencies are inferred from the claim text.

Variable-length nonce generation

Life of this patent

Variable-length nonce generation

Life of this patent

Abstract

Claims20