- key derivation key. It is truncated from a master session key (MSK) or re-authentication MSK K — (rMSK). The length of is determined by the pseudorandom function (PRF) used for key K derivation. If HMAC-SHA-1 or HMAC-SHA-256 is used as a PRF, then the full MSK or rMSK is used as key
— K - key derivation key. It is truncated from a master session key (MSK) or re-authentication MSK (rMSK). The length of K is determined by the pseudorandom function (PRF) used for key derivation. If HMAC-SHA-1 or HMAC-SHA-256 is used as a PRF, then the full MSK or rMSK is used as key
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