JDK14/Java14源码在线阅读

// Some countries have import limits on crypto strength, but may allow for
// these exemptions if the exemption mechanism is used.

grant {
    // There is no restriction to any algorithms if KeyRecovery is enforced.
    permission javax.crypto.CryptoPermission *, "KeyRecovery"; 

    // There is no restriction to any algorithms if KeyEscrow is enforced.
    permission javax.crypto.CryptoPermission *, "KeyEscrow"; 

    // There is no restriction to any algorithms if KeyWeakening is enforced. 

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