Keyed communication token

A computing system, comprising:

• a memory configured to store program instructions;
• and
• processing circuitry operably coupled to the memory, the processing circuitry configured to execute the program instructions to cause the computing system to:
• identify a key and a seed;
• generate a pseudo-random value using the seed;
• create a concatenated string using the key and the pseudo-random value;
• hash the concatenated string into a token;
• at least one of:
• allow a web command in response to the web command including a user agent having the token;
• or
• block the web command in response to the web command not including a user agent having the token;
• identifying initial time information and time interval information, wherein the initial time information represents a time at which the computing system begins allowing web commands having user agents that include the token, and wherein the time interval information represents the time period after which the computing systems stops allowing web commands having user agents that include the token and begins allowing web commands having user agents that include the subsequent token;
• advance the seed to a subsequent seed value at the expiration of a time period;
• generate a subsequent pseudo-random value using the subsequent seed;
• create a subsequent concatenated string using the key and the subsequent pseudo-random value;
• hash the subsequent concatenated string into a subsequent token;
• and at least one of:
• allow another web command in response to the other web command including a user agent having the subsequent token;
• or
• block the other web command in response to the other web command not including a user agent having the subsequent token.

A non-transitory computer-readable storage medium having program instructions stored thereon that, upon execution by a processor within a computing system, cause the computing system to:

• identify a key and a seed;
• generate a pseudo-random value using the seed;
• create a concatenated string using the key and the pseudo-random value;
• hash the concatenated string into a token;
• add the token to a string transmitted as part of a request issued by the computing system;
• update the seed, generate an updated pseudo-random value, create an updated concatenated string using the key and the updated pseudo-random value, and hash the updated concatenated string to create an updated token in response to at least one of:
• an expiration of a time period, or a number of requests having been issued by the computing system;
• and
• identify initial time information and time interval information, wherein the initial time information represents a time at which the computing system begins allowing web commands having user agents that include the token, and wherein the time interval information represents the time period after which the computing systems stops allowing web commands having user agents that include the token and begins allowing web commands having user agents that include the subsequent token.