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Clarify the authority obtained by a delegated prover.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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@ -4248,8 +4248,10 @@ The $\spendAuthSig$ and $\ProofSpend$ are included in the \spendDescription.
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\pnote{
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If the spender is computationally or memory-limited, step 4 \MAY be delegated to a different
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party that is capable of performing the \zkProof. In this case privacy will be lost to that
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party since it needs the \fullViewingKey, but it will not obtain spending authority for
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other \transactions, since it is not able to create a \spendAuthSignature by itself.
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party since it needs the \authProvingKey; this allows deriving the $\AuthSignPublic$
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and $\AuthProvePublic$ components of the \fullViewingKey, which are sufficient to recognize
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spent \notes and to recognize and decrypt incoming \notes. However, it will not obtain spending
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authority for other \transactions, since it is not able to create a \spendAuthSignature by itself.
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} %pnote
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} %sapling
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