RRSIG 记录
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RRSIG（资源记录签名）记录（RFC 4034）包含对一组[[dns|DNS]]记录的加密签名，用于实现[[dnssec|DNSSEC]]验证。对于已签名区域中的每种记录类型（A、MX、AAAA等），均使用区域私钥生成对应的RRSIG。验证[[dns-resolver|解析器]]通过对照区域的[[dnskey-record|DNSKEY]]验证RRSIG，以确认记录在传输过程中未被篡改。RRSIG记录具有到期日期，必须定期刷新。
示例
An RRSIG on the A record for example.com proves the IP address was signed by the zone owner's private key; tampering with the IP would invalidate the signature and cause resolution failure.