1. A computer-implemented method for tokenizing data, comprising: tokenizing, by a tokenization engine of a tokenization system, first data using one or more initialization vectors from a set of initialization vectors to form first tokenized data; accessing, by an input module of the tokenization system, one or more updated initialization vectors from a vector replacement table; in response to a bandwidth available to the tokenization system being below a threshold bandwidth, replacing, by an update engine of the tokenization system, a subset of the set of initialization vectors with the accessed updated initialization vectors to form an updated set of initialization vectors, wherein a number of initialization vectors within the subset of initialization vectors is equal to a number of accessed updated initialization vectors; and tokenizing, by the tokenization engine of the tokenization system, second data using one or more initialization vectors from the updated set of initialization vectors to form second tokenized data.