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See Section 20.3.2 for details.", "/versions/10/facts/0/label": "Method", "/versions/10/facts/1/label": "Configuration", "/versions/10/facts/2/label": "Inventory", "/versions/10/facts/2/value": "User-visible source authentication method", "/versions/10/tables/0/title": "Documented method options and alternatives", "/versions/10/tables/0/columns/0/label": "Option or term", "/versions/10/tables/0/columns/1/label": "Meaning", "/versions/10/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/10/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. 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See Section 20.5 for details.", "/versions/11/facts/0/label": "Method", "/versions/11/facts/1/label": "Configuration", "/versions/11/facts/2/label": "Inventory", "/versions/11/facts/2/value": "User-visible source authentication method", "/versions/11/tables/0/title": "Documented method options and alternatives", "/versions/11/tables/0/columns/0/label": "Option or term", "/versions/11/tables/0/columns/1/label": "Meaning", "/versions/11/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/11/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. 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See Section 20.5 for details.", "/versions/12/facts/0/label": "Method", "/versions/12/facts/1/label": "Configuration", "/versions/12/facts/2/label": "Inventory", "/versions/12/facts/2/value": "User-visible source authentication method", "/versions/12/tables/0/title": "Documented method options and alternatives", "/versions/12/tables/0/columns/0/label": "Option or term", "/versions/12/tables/0/columns/1/label": "Meaning", "/versions/12/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/12/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. The md5 method cannot be used with the db_user_namespace feature. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/12/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. 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See Section 20.5 for details.", "/versions/13/facts/0/label": "Method", "/versions/13/facts/1/label": "Configuration", "/versions/13/facts/2/label": "Inventory", "/versions/13/facts/2/value": "User-visible source authentication method", "/versions/13/tables/0/title": "Documented method options and alternatives", "/versions/13/tables/0/columns/0/label": "Option or term", "/versions/13/tables/0/columns/1/label": "Meaning", "/versions/13/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/13/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. The md5 method cannot be used with the db_user_namespace feature. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/13/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. 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See Section 21.5 for details.", "/versions/14/facts/0/label": "Method", "/versions/14/facts/1/label": "Configuration", "/versions/14/facts/2/label": "Inventory", "/versions/14/facts/2/value": "User-visible source authentication method", "/versions/14/tables/0/title": "Documented method options and alternatives", "/versions/14/tables/0/columns/0/label": "Option or term", "/versions/14/tables/0/columns/1/label": "Meaning", "/versions/14/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/14/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. The md5 method cannot be used with the db_user_namespace feature. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/14/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. 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See Section 21.5 for details.", "/versions/15/facts/0/label": "Method", "/versions/15/facts/1/label": "Configuration", "/versions/15/facts/2/label": "Inventory", "/versions/15/facts/2/value": "User-visible source authentication method", "/versions/15/tables/0/title": "Documented method options and alternatives", "/versions/15/tables/0/columns/0/label": "Option or term", "/versions/15/tables/0/columns/1/label": "Meaning", "/versions/15/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/15/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. The md5 method cannot be used with the db_user_namespace feature. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/15/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. 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See Section 21.5 for details.", "/versions/16/facts/0/label": "Method", "/versions/16/facts/1/label": "Configuration", "/versions/16/facts/2/label": "Inventory", "/versions/16/facts/2/value": "User-visible source authentication method", "/versions/16/tables/0/title": "Documented method options and alternatives", "/versions/16/tables/0/columns/0/label": "Option or term", "/versions/16/tables/0/columns/1/label": "Meaning", "/versions/16/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/16/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. The md5 method cannot be used with the db_user_namespace feature. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/16/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. 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See Section 20.5 for details.", "/versions/17/facts/0/label": "Method", "/versions/17/facts/1/label": "Configuration", "/versions/17/facts/2/label": "Inventory", "/versions/17/facts/2/value": "User-visible source authentication method", "/versions/17/tables/0/title": "Documented method options and alternatives", "/versions/17/tables/0/columns/0/label": "Option or term", "/versions/17/tables/0/columns/1/label": "Meaning", "/versions/17/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/17/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead.", "/versions/17/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. If the connection is protected by SSL encryption then password can be used safely, though. (Though SSL certificate authentication might be a better choice if one is depending on using SSL)."}, "fallback_fields": [], "source_language": "en", "original_snapshot_sha256": "69c9845d47a339316a552169531dae4f267652fae1cdfafe9a43d38ae659f7db", "canonical_center_text_hash": "93619203c75f9a53d75b6771d9dcbef076c001e8f4010cf2e387fcc3c16ae501"}, "description_zh": "\u8ba4\u8bc1\u65b9\u6cd5 scram-sha-256\u3002", "comparison_data": {"method": "scram-sha-256", "documented_option_names": ["md5", "password", "scram-sha-256"]}, "comparison_hash": "c8064f1480a20ad588ae6df0229559199fd23ad2c0080e9d812ce710d1292dcf", "manual_language": "zh", "description_zh_html": "\u8ba4\u8bc1\u65b9\u6cd5 scram-sha-256\u3002
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See Section 20.5 for details.", "/versions/18/facts/0/label": "Method", "/versions/18/facts/1/label": "Configuration", "/versions/18/facts/2/label": "Inventory", "/versions/18/facts/2/value": "User-visible source authentication method", "/versions/18/tables/0/title": "Documented method options and alternatives", "/versions/18/tables/0/columns/0/label": "Option or term", "/versions/18/tables/0/columns/1/label": "Meaning", "/versions/18/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/18/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. 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See Section 20.5 for details.", "/versions/19/facts/0/label": "Method", "/versions/19/facts/1/label": "Configuration", "/versions/19/facts/2/label": "Inventory", "/versions/19/facts/2/value": "User-visible source authentication method", "/versions/19/tables/0/title": "Documented method options and alternatives", "/versions/19/tables/0/columns/0/label": "Option or term", "/versions/19/tables/0/columns/1/label": "Meaning", "/versions/19/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/19/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead. Warning Support for MD5-encrypted passwords is deprecated and will be removed in a future release of PostgreSQL . Refer to the text below for details about migrating to another password type.", "/versions/19/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. 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See Section 20.5 for details.", "/category": "Password authentication", "/versions/20/description/0": "Perform SCRAM-SHA-256 authentication to verify the user's password. See Section 20.5 for details.", "/versions/20/facts/0/label": "Method", "/versions/20/facts/1/label": "Configuration", "/versions/20/facts/2/label": "Inventory", "/versions/20/facts/2/value": "User-visible source authentication method", "/versions/20/tables/0/title": "Documented method options and alternatives", "/versions/20/tables/0/columns/0/label": "Option or term", "/versions/20/tables/0/columns/1/label": "Meaning", "/versions/20/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/20/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead. Warning Support for MD5-encrypted passwords is deprecated and will be removed in a future release of PostgreSQL . 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See Section 20.5 for details.", "/versions/18/facts/0/label": "Method", "/versions/18/facts/1/label": "Configuration", "/versions/18/facts/2/label": "Inventory", "/versions/18/facts/2/value": "User-visible source authentication method", "/versions/18/tables/0/title": "Documented method options and alternatives", "/versions/18/tables/0/columns/0/label": "Option or term", "/versions/18/tables/0/columns/1/label": "Meaning", "/versions/18/tables/0/rows/0/description": "The method scram-sha-256 performs SCRAM-SHA-256 authentication, as described in RFC 7677 . It is a challenge-response scheme that prevents password sniffing on untrusted connections and supports storing passwords on the server in a cryptographically hashed form that is thought to be secure. This is the most secure of the currently provided methods, but it is not supported by older client libraries.", "/versions/18/tables/0/rows/1/description": "The method md5 uses a custom less secure challenge-response mechanism. It prevents password sniffing and avoids storing passwords on the server in plain text but provides no protection if an attacker manages to steal the password hash from the server. Also, the MD5 hash algorithm is nowadays no longer considered secure against determined attacks. To ease transition from the md5 method to the newer SCRAM method, if md5 is specified as a method in pg_hba.conf but the user's password on the server is encrypted for SCRAM (see below), then SCRAM-based authentication will automatically be chosen instead. Warning Support for MD5-encrypted passwords is deprecated and will be removed in a future release of PostgreSQL . Refer to the text below for details about migrating to another password type.", "/versions/18/tables/0/rows/2/description": "The method password sends the password in clear-text and is therefore vulnerable to password \u201c sniffing \u201d attacks. It should always be avoided if possible. 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