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One-way hash function as alternate QS Nonce, Appendix A.7. “An alternate proposal for the Quick-Start Nonce from [B05] would be for an n-bit field for the QS Nonce, with the sender generating a random nonce when it generates a Quick-Start Request. Each route that reduces the Rate Request by r would hash the QS nonce r times, using a one-way hash function such as MD5 [RFC1321] or the secure hash 1 [SHA1]. The receiver returns the QS nonce to the sender.” “Because the sender knows the original value for the nonce, and the original rate request, the sender knows the total number of steps s that the rate has been reduced.” |