Questions tagged [masked-authenticated-messaging]

Tag for Questions on Implementation and technical background of masked authenticated messaging (MAM), as well as for using it in Sensors or other Applications. Also general Usage.

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How to sign a data transaction?

I am wondering if it is possible to sign a data transaction, i.e. generate a signed bundle whose inputs have a balance of 0. If so, how could I construct such a bundle? I am asking because I would ...
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233 views

MAM message encryption

According to the documentation message encryption is done in following way Each message is encrypted with a one-time pad that consists of the channel ID and the index of the key used to sign the ...
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106 views

How to setup Full Node with IXI MAM?

I have mounted some Full Nodes and wrote a post in Hello IOTA Forum with a tutorial to do this from scratch. Now I am looking for info to setup a Full Node with MAM support. I have been searching and ...
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81 views

What's the size of the Merkle Tree of Masked Authenticated Messaging?

Based on the current source code of the client it looks like the Merkle Tree can have only one key. Am I right? The questions: How many keys does the Merkle Tree have in general? What does it ...
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67 views

What code was used and are there any examples of code available to develop the MAM on the XDK and RuuviTag for the Tangle?

There have been reports of MAM being implemented and sent to the Tangle using the Bosch XDK and the RuuviTag. What code was used and are there any examples of code available to develop the MAM on the ...
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91 views

Is MAM encrypted message has perfect secrecy?

Here I am referring to MAM in restricted mode, where side key is used to encrypt the message. One time pad is known for perfect secrecy. Since MAM uses the one-time pad, is MAM encrypted message has ...
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47 views

MAM: Is the bundle, used to create masked payload signature, not normalized?

I am researching how Masked Authenticated Messaging (MAM) works. The masked_payload is created in the create function in file: https://github.com/iotaledger/MAM/blob/master/mam/src/mam.rs ...
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195 views

Building the mam.client.js (actually the iota-bindings)

I am trying to build according to the instructions given: https://github.com/iotaledger/mam.client.js There are a whole lot of other steps then just described there which mainly relate to building ...
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95 views

How to attach a message multiple times (say 200 times) with the tangle using MAM

What I am trying to do is to attach a payload to the tangle using MAM protocol. If I run this loop for k=5 times it works fine i.e., data is attached to the Tangle. I confirmed that the data is ...
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106 views

How can I fork MAM channel?

This https://blog.iota.org/introducing-masked-authenticated-messaging-e55c1822d50e says that any channel can be splitting. Also this https://medium.com/coinmonks/iota-mam-eloquently-explained-...
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43 views

Unique SideKey for each individual message in Restricted mode

Is it possible to have a unique secret key for each new message added to the channel in restricted mode? If yes, How we can achieve it? Desired Scenario: Different Messages having different SideKeys ...
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2answers
56 views

How is a MAM stream implemented on the Tangle?

What I am wondering is how the Merkle tree for a MAM stream is implemented in the Tangle. Is each set of new data in the stream basically a "leaf", and considered a separate transaction on the Tangle ...
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8 views

Can MAM transaction be appended?

There is an already existing MAM transaction that has been published on Tangle by a seed. Now, I want to add further data in the same transaction. Example, temperature sensor has published data ...
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29 views

How to get the current address of a fetched MAM mesage object?

as the title says, im searching a way for extracting the address of an associated MAM- Object. Thanks in regards
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how to use NTRU key exchange in IOTA

I want to use a key exchange algorithm for exchanging key using MAM protocol in IOTA. I try to use NTRU key exchange but I couldn't do it. I also checked an example at GitHub NTRU but this example is ...