tlslite.verifierdb module¶

Class for storing SRP password verifiers.

class tlslite.verifierdb.VerifierDB(filename=None)¶

This class represent an in-memory or on-disk database of SRP password verifiers.

A VerifierDB can be passed to a server handshake to authenticate a client based on one of the verifiers.

This class is thread-safe.

__init__(filename=None)¶

Create a new VerifierDB instance.

Parameters:	filename (str) – Filename for an on-disk database, or None for an in-memory database. If the filename already exists, follow this with a call to open(). To create a new on-disk database, follow this with a call to create().

__setitem__(username, verifierEntry)¶

Add a verifier entry to the database.

Parameters:	username (str) – The username to associate the verifier with. Must be less than 256 characters in length. Must not already be in the database. verifierEntry (tuple) – The verifier entry to add. Use `makeVerifier()` to create a verifier entry.

static makeVerifier(username, password, bits)¶

Create a verifier entry which can be stored in a VerifierDB.

Parameters:	username (str) – The username for this verifier. Must be less than 256 characters in length. password (str) – The password for this verifier. bits (int) – This values specifies which SRP group parameters to use. It must be one of (1024, 1536, 2048, 3072, 4096, 6144, 8192). Larger values are more secure but slower. 2048 is a good compromise between safety and speed.
Return type:	tuple
Returns:	A tuple which may be stored in a VerifierDB.

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