{"Entry":{"collection":"protocol","key":"authenticationkerberosv5-b","name":"AuthenticationKerberosV5","aliases":["AuthenticationKerberosV5","Byte1('R')"],"metadata":{"aliases":["AuthenticationKerberosV5","Byte1('R')"],"category":"Backend messages","content_hash":"0bfcefa0940e8129f4b82dc5a9111015affe02f8a4c984321afbc31d71bf877c","derived_content_hash":"6d0a04cd85bda0ad327eede7870ce227f464b394a22e56a96f41c28ecf0a85c4","imported_at":"2026-09-30T00:40:44.40851+08:00","name":"AuthenticationKerberosV5","name_zh":"","slug":"authenticationkerberosv5-b","summary":"AuthenticationKerberosV5 is a backend protocol message. 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Integer encodings and flow rules follow the same-version protocol chapter."],"title":"Framing and repetition"}],"sections_zh":[{"paragraphs":["下方完整定义保留重复项、计数与条件字段。表格行号表示文档中的字段定义，并非固定字节偏移量。整数编码与交互流程以同版本协议章节为准。"],"title":"消息边界与重复字段"}],"signature":"AuthenticationKerberosV5 (B)","sources":[{"label":"PostgreSQL 18 English manual","path":"protocol-message-formats.html","sha256":"53f37652ac2c089e30ada87d8aee7bdd0f26695b03f275302e526a807d2a1f23","url":"/docs/18/protocol-message-formats.html#PROTOCOL-MESSAGE-FORMATS-AUTHENTICATIONKERBEROSV5"}],"tables":[{"columns":[{"key":"c0","label":"Position"},{"key":"c1","label":"Format"},{"key":"c2","label":"Meaning"}],"key":"fields","rows":[{"c0":"1","c1":"Byte1('R')","c2":"Identifies the message as an authentication request."},{"c0":"2","c1":"Int32(8)","c2":"Length of message contents in bytes, including self."},{"c0":"3","c1":"Int32(2)","c2":"Specifies that Kerberos V5 authentication is required."}],"title":"Wire fields in documented order"}],"tables_zh":[{"columns":[{"key":"c0","label":"位置"},{"key":"c1","label":"格式"},{"key":"c2","label":"含义"}],"key":"fields","rows":[{"c0":"1","c1":"Byte1('R')","c2":"将该消息标识为认证请求。"},{"c0":"2","c1":"Int32(8)","c2":"消息内容的长度（以字节为单位），包括其自身。"},{"c0":"3","c1":"Int32(2)","c2":"表示需要 Kerberos V5 认证。"}],"title":"按手册顺序排列的线上协议字段"}],"zh_from":{"authored_translation":"source-derived-identity","body_sha256":"84de095bf19f939f1b8f198e9fc721722934b1dfa5402f55f564c9568ade8f14","kind":"same-version-chinese-manual-with-source-derived-identity","manual":{"anchor":"PROTOCOL-MESSAGE-FORMATS-AUTHENTICATIONKERBEROSV5","build_id":107,"extraction":"exact-definition","fragment_sha256":"ae77fcb648e77aaa7e2ac32b96dbcde9a48f9fc41d5ad92010d008779029e02c","locale":"zh-Hans","page_key":"protocol-message-formats.html","source_hash":"0be0a37b38d80c96c157ca9fcfe9222995654664aad8136f7ac2b1b552f6753a","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/protocol-message-formats.html#PROTOCOL-MESSAGE-FORMATS-AUTHENTICATIONKERBEROSV5","version":"18"},"runtime_rerun":false,"source_facts_revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}},"ManualEvidence":{"manual_path":"/docs/18/protocol-message-formats.html","release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"label":"PostgreSQL 18 English manual","path":"protocol-message-formats.html","sha256":"53f37652ac2c089e30ada87d8aee7bdd0f26695b03f275302e526a807d2a1f23","url":"/docs/18/protocol-message-formats.html#PROTOCOL-MESSAGE-FORMATS-AUTHENTICATIONKERBEROSV5"}]},"MeasuredEvidence":{}},"Text":{"Collection":"protocol","Key":"authenticationkerberosv5-b","SourceDatabase":"center","Version":"18","Locale":"en","Title":"AuthenticationKerberosV5","Summary":"AuthenticationKerberosV5 is a backend protocol message. 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