linotp.lib.crypto.rsa module

methods to handle rsa signature - sign and verify

class linotp.lib.crypto.rsa.RSA_Signature(private: Optional[bytes] = None, public: Optional[bytes] = None)

Bases: object

encapsulate the signature handling which allows to switch the cryptographic implementation

sign(message: bytes) → bytes

sign a message

Parameters

message – as bytes

Returns

signature: as bytes

verify(message: bytes, signature: bytes) → bool

verify a message signature

Parameters

• message – as bytes

• signature – as bytes

Returns

boolean, True for matching signature

linotp.lib.crypto.rsa.create_rsa_signature(priv_key: bytes, message: bytes) → bytes

create rsa signature

Parameters

• priv_key – the private as bytes

• message – e.g. the license as string as bytes

Returns

signature in bytes

linotp.lib.crypto.rsa.verify_rsa_signature(pub_key: bytes, message: bytes, signature: bytes) → bool

verify rsa signature

Parameters

• pub_key – the public key as bytes in pem format

• message – e.g. the license as string as bytes

• signature – e.g. the license signature as bytes

Returns

boolean