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Implement key exchange mechanism to exchange seed of MAM #560

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howjmay opened this issue Apr 13, 2020 · 8 comments

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A-mam A-utils C-feature P-high

Contributor

howjmay commented Apr 13, 2020

DH agreement allows TA and its clients to share the same seed without unveiling the seed or transmitting it.
We need to implement DH agreement for MAM.

howjmay added P-high C-feature A-mam A-utils labels

Contributor Author

howjmay commented Apr 14, 2020

The spec of DH agreement standard is here:
https://tools.ietf.org/html/rfc2631

Contributor Author

howjmay commented Apr 14, 2020

The shared secrect number can be used as the cryptographic seed which can generate IOTA seed.

We could use some usual cryptographic algorithm to hash the initial shared secrect
Then we can use Curl (IOTA hash function) to hash the result from the first stage into the IOTA seed in assigning length.

Contributor Author

howjmay commented Apr 14, 2020

There is implementaiton in mbedtls. Here is the source code that genrates keys for DH agreement
https://github.com/ARMmbed/mbedtls/blob/master/programs/pkey/dh_genprime.c

Contributor Author

howjmay commented Apr 14, 2020

client: https://github.com/ARMmbed/mbedtls/blob/master/programs/pkey/dh_client.c
server: https://github.com/ARMmbed/mbedtls/blob/master/programs/pkey/dh_server.c

Contributor Author

howjmay commented Apr 14, 2020

To support this implementation, the thirt-party gitmodule mbedtls will be moved to root thirt-party

howjmay changed the title ~~Implement DH agreement for generating seed of MAM~~

Contributor Author

howjmay commented Jun 21, 2020

We will use asymmetric encryption to exchange seed instead of DH agreement.

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

f63a29c

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

Contributor Author

howjmay commented Jul 29, 2020

ECDH and ECDSA will be used to construct station to station protocol

Contributor Author

howjmay commented Jul 29, 2020

The shared secret of ECDH would be used to generate AES key. In this way, even we found out we shared the secret with malicious attacker, the user can change to the other share secret to generate the other AES key.

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

8a73749

For DLTcollab#560

howjmay mentioned this issue

feat(mam): Implement ECDH for MAM key exchange #735

Merged

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

a63312d

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

caab623

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

11a3f69

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

621a771

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

d5b451a

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

d226003

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

94840cd

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

1829af1

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

e74a23b

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

4fdb60d

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

100b191

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

264e1b6

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

11771fb

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

0bcc564

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

a2c6976

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

18bc208

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

0e48fed

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

a007c49

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

99cb6dc

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

295e959

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

033cc2f

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

1a40b38

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Register user ID with MAM channel seed

81f90f6

Register user identity with MAM channel seed. The return user ID is
an UUID.

Asymmetric encryption for key exchange will be implemented in the
coming PR.

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

5f019f9

For DLTcollab#560

howjmay added a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

c5f9333

For DLTcollab#560

splasky pushed a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

8a2cbbe

For DLTcollab#560

splasky pushed a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

32e9dc0

For DLTcollab#560

splasky pushed a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

fedc529

For DLTcollab#560

splasky pushed a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

fa95078

For DLTcollab#560

splasky pushed a commit to howjmay/tangle-accelerator that referenced this issue


          feat(mam): Implement ECDH for MAM key exchange

3986bc8

For DLTcollab#560

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