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1.1 Glossary

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This document uses the following terms:

keyed hash: A cryptographic hash computed over both a symmetric key and data, as specified in [RFC2617]. For more information, see [RFC2104].

nonce: A number that is used only once. This is typically implemented as a random number large enough that the probability of number reuse is extremely small. A nonce is used in authentication protocols to prevent replay attacks. For more information, see [RFC2617].

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.