以下各种加密算法中属于单钥制加密算法的是()。
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RawdonCrawleyhadalreadyfoughtthreebloodyduels,inwhichhegaveample________ofhiscontemptfordeath.
IdonotmeantoinsultthereaderbypretendingthatIkilled,forinstance,aregimentofcavalryorswallowedabatteryofguns,—such_______taleswoulddisgraceboththehearerandtheteller.