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17 commits

Author SHA1 Message Date
Gilles Peskine 9dcc80e628 Merge branch 'psa-derive_input_steps-agreement_as_one_step' into psa-api-1.0-beta
Change the key derivation API to take inputs in multiple steps,
instead of a single one-site-fits-poorly function.

Conflicts:
* include/psa/crypto.h: merge independent changes in the documentation
  of psa_key_agreement (public_key from the work on public key formats
  vs general description and other parameters in the work on key derivation).
* tests/suites/test_suite_psa_crypto.data: update the key agreement
  tests from the work on key derivation to the format from the work on
  public key formats.
* tests/suites/test_suite_psa_crypto_metadata.function: reconcile the
  addition of unrelated ALG_IS_xxx macros
2019-01-18 18:54:15 +01:00
Gilles Peskine 6843c29713 Simplify the encoding of key agreement algorithms
Get rid of "key selection" algorithms (of which there was only one:
raw key selection).

Encode key agreement by combining a raw key agreement with a KDF,
rather than passing the KDF as an argument of a key agreement macro.
2019-01-18 18:38:08 +01:00
Gilles Peskine 30f77cdfc1 Add a hash wildcard value for hash-and-sign algorithm
You can use PSA_ALG_ANY_HASH to build the algorithm value for a
hash-and-sign algorithm in a policy. Then the policy allows usage with
this hash-and-sign family with any hash.

Test that PSA_ALG_ANY_HASH-based policies allow a specific hash, but
not a different hash-and-sign family. Test that PSA_ALG_ANY_HASH is
not valid for operations, only in policies.
2019-01-14 19:38:56 +01:00
Gilles Peskine d35b489ce5 New macro PSA_ALG_IS_HASH_AND_SIGN
Test for a subclass of public-key algorithm: those that perform
full-domain hashing, i.e. algorithms that can be broken down as
sign(key, hash(message)).
2019-01-14 16:02:15 +01:00
Gilles Peskine f812dcf4ae Rewrap some lines after the macro changes
Change the way some lines are wrapped to cut at a more logical place.
This commit mainly rewrites multi-line calls to TEST_EQUAL, and also a
few calls to PSA_ASSERT.
2018-12-20 18:47:52 +01:00
Gilles Peskine fe11b72b93 Use TEST_EQUAL(a,b) in preference to TEST_ASSERT(a==b)
This commit is the result of the following command, followed by
reindenting (but not wrapping lines):

perl -00 -i -pe 's/^( *)TEST_ASSERT\(([^;=]*)(?: |\n *)==([^;=]*)\);$/${1}TEST_EQUAL($2,$3);/gm' tests/suites/test_suite_psa_*.function
2018-12-20 18:47:52 +01:00
Gilles Peskine 0f915f1d2a Indent PSA tests according to K&R rules with Mbed TLS tweaks
Only whitespace changes in this commit.
2018-12-20 18:47:52 +01:00
Gilles Peskine 93098fd996 Key agreement: macros for finite-field Diffie-Hellman, ECDH
Declare macros to represent key agreement algorithms.
2018-11-14 21:15:37 +01:00
Gilles Peskine e8f0e3dc3c New algorithm category: key selection
A key selection algorithm is similar to a key derivation algorithm in
that it takes a secret input and produces a secret output stream.
However, unlike key derivation algorithms, there is no expectation
that the input cannot be reconstructed from the output. Key selection
algorithms are exclusively meant to be used on the output of a key
agreement algorithm to select chunks of the shared secret.
2018-11-14 21:15:37 +01:00
Gilles Peskine e0e9c7c417 New macro PSA_ALG_FULL_LENGTH_MAC
Provide a documented way of constructing the full-length MAC algorithm
from a truncated version.
2018-10-17 18:30:47 +02:00
Gilles Peskine 7fa99d90dd Add metadata tests for truncated MAC and short-tag AEAD 2018-10-17 18:30:47 +02:00
Gilles Peskine 23cc2ff9a8 Add support for non-default-tag-size AEAD (CCM and GCM) 2018-10-08 14:42:11 +02:00
Gilles Peskine fa764b161b Add curve sizes to ECC curve metadata validation tests 2018-09-20 12:00:21 +02:00
Gilles Peskine 3052f53c37 Add block sizes to HMAC metadata validation tests 2018-09-20 12:00:21 +02:00
Gilles Peskine 49cd329908 Key type validation tests
For all key types, validate feature test macros (PSA_KEY_TYPE_IS_xxx).

For asymmetric keys (public key or key pair), validate the
corresponding public/pair type.

For ECC keys, validate GET_CURVE.
2018-09-20 12:00:21 +02:00
Gilles Peskine 17351eb7f2 Algorithm validation tests
For all algorithms, validate feature test macros (PSA_ALG_IS_xxx).

For hash algorithms, validate the exact hash size, and validate
xxx_GET_HASH macros on dependent algorithms.

For MAC algorithms, validate the MAC size. For AEAD algorithms,
validate the tag size.

There is a separate test case for each HMAC algorithm, which is
necessary because each has its own MAC size. For other hash-dependent
algorithms, there is no interesting variation to test here, so only
one hash gets tested.
2018-09-20 12:00:21 +02:00
Gilles Peskine 44fed61e01 Create infrastructure for metadata validation unit tests 2018-09-20 12:00:21 +02:00