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135 Commits (5c9fb53ede52ca4e744b1b073af7b55ad9ad1634)

Author SHA1 Message Date
David Núñez 38eff317c4 Fixes deserialization problems for non-default curves 
* Passes the curve to BystringSplitter
 2018-06-06 11:31:33 +02:00
David Núñez d70d21dfe0 Fix some functions definition according to PEP8 2018-06-05 03:49:22 +02:00
David Núñez 9e126bde29 Fixes bug in Capsule.attach_cfrag that allowed to attach incorrect CFrag 2018-06-05 02:52:23 +02:00
David Núñez 5618b25292 Simplified public API for umbral.pre 
* Functions in `pre` now only take Umbral keys as arguments, rather than primitive types (Point, CurveBN)
* Remove unnecessary arguments from public facing and internal methods when they can be extracted from a Capsule, UmbralPublicKey or UmbralPrivateKey
* Adds a getter in Capsule for correctness keys
* Adapts the test suite to new simplified API
 2018-06-05 02:52:16 +02:00
David Núñez c736370bcc Remove params as an argument when possible 
* Instead, takes params from Capsules or UmbralPublicKeys
* Makes params required in some places (Capsule.init, Capsule.from_bytes, etc)
* Removes pre.CHACHA20_KEY_SIZE constant and use dem.DEM_KEYSIZE instead
 2018-06-05 02:11:32 +02:00
David Núñez c98f723eec Check that params match when setting correctness keys 2018-06-05 02:11:32 +02:00
David Núñez 03b4138229 Add params when deserializing Capsule 2018-06-05 02:11:32 +02:00
jMyles e04a44c239 Capsule length now reflects number of attached CFrags. 2018-06-01 23:50:20 -07:00
David Núñez e14636a2a9 Checks that _set_cfrag_correctness_key is only used in allowed keypairs 2018-05-31 12:47:48 +02:00
David Núñez 6a4c1237e5 Renaming keypairs (encrypting --> receiving) 
* Fixes some weird test patterns, where split_rekey is used from Alice to Alice
 2018-05-31 12:46:43 +02:00
jMyles a9e431a152 params now injected into Capsule one - in __init__ 2018-05-30 18:28:54 -07:00
jMyles e6dafb956e Modifications in responses to various discussions and comments throughout the day. 2018-05-30 15:51:33 -07:00
jMyles 9e05cf436c set_keys instead of set_three_keys; using it in test_simple_api. 2018-05-30 13:12:48 -07:00
jMyles d8f5d53884 Remoing get-or-create flow in favor of simple setting. 2018-05-30 12:44:07 -07:00
jMyles 71db482fc5 More complete tests for cfrag attachment. 2018-05-29 23:33:14 -07:00
jMyles cb7bbcdbed We need the verifying key also. 2018-05-29 22:03:09 -07:00
jMyles bf6a375d57 Functions for getting or setting keys on Capsule, and taking them in __init__. 2018-05-29 18:51:49 -07:00
jMyles 3177696f30 Some more code and naming touchups. 2018-05-28 10:54:50 -07:00
jMyles 6038dff98d Using expected_bytes_length for various crypto entities. 2018-05-26 12:12:33 -07:00
jMyles a7d203aa44 Tests that were using old fixture now work with new one. 2018-05-25 15:43:19 -07:00
jMyles 8394cf6e44 Message for validating KFrag is now bytes of constituents instead of a BigNum. Fixes #148. 2018-05-25 14:41:13 -07:00
jMyles e4792b40ba Using ECDSA for kfrag signature and verification. 2018-05-24 18:32:54 -07:00
jMyles 0632a53d0e Signing and verifying using ECDSA instead of Schnorr signature. 2018-05-24 18:07:13 -07:00
tuxxy 53858cd600 Use BytestringSplitter in Capusle deserialization 2018-05-23 04:49:29 -06:00
tuxxy 12bcfe610e Have Capsule.get_size return an non-activated capsule size by default 2018-05-23 04:49:04 -06:00
tuxxy 4efbe3ddc7 Add get_size method on Capsule 2018-05-23 04:15:56 -06:00
David Núñez d768cf4a38 Change signatures input from lists to tuples 2018-05-09 01:57:52 +02:00
David Núñez 0dbb86e6f1 Enter KFrag._point_xcoord: an ephemeral pk used during reconstruction instead of Alice's pk 2018-05-09 00:19:23 +02:00
David Núñez 0dd3d4b991 Change KFrag.bn_id to a random byte sequence (Solves #123) 2018-05-09 00:18:45 +02:00
jMyles df4bfa3f1b Proof and verification logic are now wraped to keep all "whitepaper" representations in pre and _pre. 2018-05-06 14:36:19 -07:00
jMyles 9cd3c9c2a3 point_bob, point_alice -=> pubkey_b_point, pubkey_a_point 2018-05-05 22:28:04 -07:00
jMyles 48aab73ef1 Making `signature_input` a little more straightforward. 2018-05-05 19:03:53 -07:00
jMyles 6d41a45a62 Removing pre._verify_correctness. 2018-05-05 19:03:21 -07:00
jMyles ee2f9fd0e1 Reworking `_prove_correctness` to match the flow of `_verify_correctness` 2018-05-05 19:03:21 -07:00
jMyles af9d8b251d Updating caller logic to use new `CapsuleFrag._verify_correctness` 2018-05-05 19:03:21 -07:00
David Nuñez aeb8ad3298 Fix calls to CurveBN.hash() 2018-05-02 01:25:42 +02:00
David Nuñez ce3caf9dfb Remove unused import hmac 2018-04-30 00:19:35 +02:00
tuxxy 6c2dd86522 Remove __hash__ on CurveBN and make Capsule._attached_cfrags a list 
Remove unused Capsule._contents
 2018-04-24 16:39:20 -06:00
tuxxy 150714fb00 Add get_size classmethods for CurveBN, Point, fragments, and 
CorrectnessProof.

Fix syntax error
 2018-04-24 16:28:01 -06:00
tuxxy 923ad2944f Rename BigNum -> CurveBN 
Change all references from BigNum to CurveBN
 2018-04-24 12:41:40 -06:00
David Nuñez 63f63b4235 Big renaming 2018-04-24 10:42:10 -07:00
David Nuñez 02ea0aaf3b Added `check_proof` parameter to pre.decrypt 2018-04-24 10:21:43 +02:00
David Nuñez 4304a7da40 Improve readability of valid_kfrag_signature check 2018-04-24 01:18:26 +02:00
David Nuñez 7d9bc19fc4 Fix call to hash_to_bn 2018-04-23 23:13:11 +02:00
David Nuñez f1a847d219 Merge remote-tracking branch 'nucypher/master' into cfrags-with-correctness-proof 
# Conflicts:
#	umbral/pre.py
 2018-04-23 22:58:52 +02:00
David Nuñez cb326488c9 Correctness proofs are now optional, although default setting is True 2018-04-22 23:43:39 +02:00
David Nuñez f646fdc241 More informative names in _verify_correctness() 2018-04-22 23:34:13 +02:00
David Nuñez b714f47d10 Some renaming 2018-04-19 13:14:33 +02:00
David Nuñez b725a5e9ac pre._verify_correctness_proof() --> pre._verify_correctness() 2018-04-19 13:00:19 +02:00
David Nuñez fca002632e Enter UmbralCorrectnessError 2018-04-18 22:59:27 +02:00
David Nuñez 88961b35d3 Reformat 2018-04-18 22:40:05 +02:00
David Nuñez 0e064c4046 Now re-encryption correctness is always verified during decryption 2018-04-18 15:14:10 +02:00
David Nuñez 094b8c9e0c Remove metadata as parameter of pre.verify_correctness_proof() 2018-04-18 12:00:09 +02:00
David Nuñez 72a9e7be06 Include metadata inside the CorrectnessProof 2018-04-18 11:37:40 +02:00
tuxxy dbbc11873a Fix flow of hash_to_bn 2018-04-18 00:37:37 -06:00
David Nuñez 274699b2a1 Proofs are now part of CFrags so we can drop it as an argument to _verify_correctness_proof 2018-04-18 00:10:10 +02:00
tuxxy 4a244a01a3 Use arg packing in hash_to_bn and check if item is bytes before hashing 
Use default_params
 2018-04-17 14:57:33 -06:00
David Nuñez a03837dc72 More renaming 2018-04-17 13:02:04 +02:00
David Nuñez 3610004773 pre._check_challenge() --> pre._verify_correctness_proof() 2018-04-17 12:43:08 +02:00
David Nuñez e275cb66c6 pre._challenge() --> pre._prove_correctness 2018-04-17 12:29:44 +02:00
David Nuñez 1a8bb867ae Refactored pre.ChallengeResponse into fragments.CorrectnessProof 2018-04-17 12:17:14 +02:00
jMyles caea15cb7a Fixing parameter order and cleaning up some imports. 2018-04-02 19:00:41 -07:00
tuxxy 34807581e6 Inject params on encrypt, decrypt, and open_capsule 2018-04-02 18:16:43 -07:00
David Nuñez 42e75127ac k_frag, c_frag --> kfrag, cfrag 2018-03-28 20:59:28 -07:00
David Nuñez 010daae066 Made pre.challenge and pre.check_challenge private 2018-03-18 01:53:32 +01:00
David Nuñez 5be059770e Made _decapsulate_reencrypted private 2018-03-18 01:49:52 +01:00
David Nuñez 0639854a85 Changed order of arguments in pre.decrypt() 2018-03-18 01:48:05 +01:00
David Nuñez 17467431ca Dropped pre.gen_priv() and pre.priv2pub() 
Resolves #90
 2018-03-15 11:07:56 +01:00
David Nuñez 5bd0503ca8 Improvements to the tests 2018-03-14 12:00:04 +01:00
David Nuñez 3990b7a499 Fixed notation of scalar multiplication operations 2018-03-14 10:37:41 +01:00
David Nuñez a66cf59c48 SHA512 --> BLAKE2b 
Resolves #60
 2018-03-13 15:43:25 +01:00
David Nuñez 43d1ab206b Added metadata as optional input to the challenge protocol 2018-03-13 15:33:23 +01:00
David Nuñez dda693450e KFrag ids can only be computed by Bob now 2018-03-13 13:08:30 +01:00
tuxxy 1d96f84fca Uses a constant CHAHCA20_KEY_SIZE instead of unused SecretBox constant 2018-03-07 18:37:33 -07:00
David Nuñez 1678a6cc27 Some changes to variable names 2018-02-27 09:08:27 +01:00
David Nuñez c1a30c3056 Removed KFrag consistency checks (#77) 2018-02-26 15:36:56 +01:00
David Nuñez fba9b0bba1 Original capsule components are now authenticated by the AEAD 2018-02-26 10:29:02 +01:00
David Nuñez 5a5d239ec7 Method _original_to_bytes to get bytes representation of original components of a capsule 2018-02-26 10:26:50 +01:00
David Nuñez e1a3c03184 Missing check in the challenge protocol 2018-02-26 10:05:01 +01:00
jMyles a0edb155e5 Capsule with wrong Type raises TypeError now, not ValueError. 2018-02-22 23:19:47 -08:00
jMyles 2cedc7689e @KPrasch is right - no need for those square brackets. And a test too. 2018-02-22 18:53:34 -08:00
jMyles 0015ca5fcb Back to comparing lists of components for Capsule. 2018-02-22 18:21:30 -08:00
jMyles e0a069bb9a umbral.umbral -=> umbral.pre 2018-02-22 18:21:30 -08:00
Kieran R Prasch 97cceedc30 Creates opeenssl mocked backend pytest fixture. 2018-02-10 04:49:51 -08:00
tuxxy d65829f977
Add empty pre.py file 2017-12-27 07:08:52 -07:00