HashVerifier

Computes and verifies hashes for sync verification. Implements spec Section 15 (Hash Verification).

public static class HashVerifier

Methods

public static string ComputeBatchHash(IEnumerable<SyncLogEntry> changes)

Computes SHA-256 hash for a batch of changes. Format: "{version}:{table_name}:{pk_value}:{operation}:{payload}\n"

Parameters:

Name	Type	Description
`changes`	`SyncLogEntry>`

Returns: String

public static string ComputeDatabaseHash(IEnumerable<string> tables, Func<string, IEnumerable<Dictionary<string, object?>>> getTableRows)

Computes full database hash for all tracked tables. Tables are processed alphabetically, rows ordered by PK.

Parameters:

Name	Type	Description
`tables`	`String>`
`getTableRows`	`Object>>>`

Returns: String

public static Result<bool, SyncError> VerifyHash(string expected, string actual)

Verifies that two hashes match.

Parameters:

Name	Type	Description
`expected`	`String`
`actual`	`String`

Returns: SyncError>

public static string ToCanonicalJson(Dictionary<string, object?> data)

Converts a dictionary to canonical JSON per spec Section 15.2. Keys sorted alphabetically, no whitespace, minimal escaping.

Parameters:

Name	Type	Description
`data`	`Object>`

Returns: String

public static Dictionary<string, object?> ParseJson(string? json)

Parses a JSON string to a dictionary for hashing.

Parameters:

Name	Type	Description
`json`	`String`

Returns: Object>