PSA_ALG_RSA_PSS algorithm now accepts only the same salt length for
verification that it produces when signing, as documented.
Fixes#4946.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Test the following combinations:
* 1024-bit key, SHA-256, salt=0
* 1024-bit key, SHA-256, salt=31 (1 byte shorter than standard)
* 1024-bit key, SHA-256, salt=32 (standard length)
* 1024-bit key, SHA-256, salt=94 (maximum possible length)
* 1024-bit key, SHA-512, salt=61 (1 byte shorter than standard)
* 1024-bit key, SHA-512, salt=62 (standard = maximum possible length)
* 528-bit key, SHA-512, salt=0 (only possible length)
Test psa_verify_hash() for both PSA_ALG_RSA_PSS and PSA_ALG_RSA_PSS_ANY_SALT
with all of these combinations. For psa_verify_message(), just test once
with the standard length and once with a different length.
Note that as of this commit, both PSA_ALG_RSA_PSS and
PSA_ALG_RSA_PSS_ANY_SALT accept any salt length during verification, hence
all the new test cases are positive.
The verify test cases were generated using the Python script below.
```
from Cryptodome import Hash
from Cryptodome.Hash import SHA512
from Cryptodome import PublicKey
from Cryptodome.PublicKey import RSA
from Cryptodome.Signature import pss
key = {
528: RSA.import_key(bytes.fromhex("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")),
1024: RSA.import_key(bytes.fromhex("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")),
}
hash_module = {
256: Hash.SHA256,
512: Hash.SHA512,
}
def print_test_case(remark, pub, kbits, hbits, input, output):
key_hex = pub.hex()
input_hex = input.hex()
output_hex = output.hex()
print(f"""\
PSA verify hash: RSA-{kbits} PSS SHA-{hbits}, {remark}
depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_{hbits}:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
verify_hash:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"{key_hex}":PSA_ALG_RSA_PSS(PSA_ALG_SHA_{hbits}):"{input_hex}":"{output_hex}"
PSA verify hash: RSA-{kbits} PSS-any-salt SHA-{hbits}, {remark}
depends_on:PSA_WANT_ALG_RSA_PSS:PSA_WANT_ALG_SHA_{hbits}:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
verify_hash:PSA_KEY_TYPE_RSA_PUBLIC_KEY:"{key_hex}":PSA_ALG_RSA_PSS_ANY_SALT(PSA_ALG_SHA_{hbits}):"{input_hex}":"{output_hex}"
""")
def rand(n):
return bytes(x & 0xff for x in range(n))
def test_case(kbits, hbits, slen):
priv = key[kbits]
pub_spki = priv.publickey().export_key('DER')
pub_raw = PublicKey._expand_subject_public_key_info(pub_spki)[1]
hash_op = hash_module[hbits].new(b'abc')
digest = hash_op.copy().digest()
output = pss.new(priv, salt_bytes=slen, rand_func=rand).sign(hash_op)
print_test_case(f"slen={slen}", pub_raw, kbits, hbits, digest, output)
test_case(1024, 256, 0)
test_case(1024, 256, 31)
test_case(1024, 256, 32)
test_case(1024, 256, 94)
test_case(1024, 512, 61)
test_case(1024, 512, 62)
test_case(528, 512, 0)
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Ensure the unique part fits in the 66 columns that the test runner displays.
Leave room for an additional distinguisher on signature key policy negative
test cases.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
The test cases strictly replicate a subset of the test cases for
PSA_ALG_RSA_PSS. The subset validates that PSA_ALG_RSA_PSS_ANY_SALT is
recognized wherever PSA_ALG_RSA_PSS is.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This is a variant of PSA_ALG_RSA_PSS which currently has exactly the same
behavior, but is intended to have a different behavior when verifying
signatures.
In a subsequent commit, PSA_ALG_RSA_PSS will change to requiring the salt
length to be what it would produce when signing, as is currently documented,
whereas PSA_ALG_RSA_PSS_ANY_SALT will retain the current behavior of
allowing any salt length (including 0).
Changes in this commit:
* New algorithm constructor PSA_ALG_RSA_PSS_ANY_SALT.
* New predicates PSA_ALG_IS_RSA_PSS_STANDARD_SALT (corresponding to
PSA_ALG_RSA_PSS) and PSA_ALG_IS_RSA_PSS_ANY_SALT (corresponding to
PSA_ALG_RSA_PSS_ANY_SALT).
* Support for the new predicates in macro_collector.py (needed for
generate_psa_constant_names).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Use case pattern matching instead of multiline split, given there is
only the well formatted PIDs to match on this should be safe.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
On machines with more modern kernels (>5.4 from testing so far) the
useage of -b seems to conflict with the usage of -p. Whilst the usage of
-b seems like a good idea to avoid blocks as we are tight looping on it,
the usage of -p seems to require the usage of stat() (specifically in
/proc) which -b forbids. All you get is a load of warnings
(suppressable by -w) but never a positive result, which means that all
servers are reported as "Failed to start". We are not keen on losing
-b, so instead parse the output of lsof (using -F to format it) to
check the if PIDs that it outputs match that we are looking for.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
digits is also a local variable in host_test.function, leading to compilers
complaining about that shadowing the global variable in
test_suite_base64.function.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This is part of the definition of the encoding, not a choice of test
parameter, so keep it with the test code.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Add unit tests for mask_of_range(), enc_char() and dec_value().
When constant-flow testing is enabled, verify that these functions are
constant-flow.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
When TEST_EQUAL fails, show the two numerical values in the test log (only
with host_test). The values are printed in hexa and signed decimal.
The arguments of TEST_EQUAL must now be integers, not pointers or floats.
The current implementation requires them to fit in unsigned long long
Signed values no larger than long long will work too. The implementation
uses unsigned long long rather than uintmax_t to reduce portability
concerns. The snprintf function must support "%llx" and "%lld".
For this purpose, add room for two lines of text to the mbedtls_test_info
structure. This adds 154 bytes of global data.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Improve the code structure in case we want to add other similar conditions
later. Document better what we're doing, and document why we're doing it.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Palliative for https://github.com/ARMmbed/mbedtls/issues/3377. If a test
case fails due to an unexpected resend, allow retrying, like in the case of
a client timeout.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This was causing some tests using the openssl s_client to not connect -
I suspect this was due to localhost (at least on my machine) resolving
to ::1 rather than 127.0.0.1. Note that the error seen would have been
that the session file specified with -sess_out did not get created.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Missing wildcards meant that some servers were not identified as DTLS,
which lead to port checking on TCP rather than UDP, and thus mistakenly
cancelling tests as the server had not come up.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
Don't default to unbridled -j, which causes a load spike and isn't really
faster.
"Number of CPUs" is implemented here as a reasonable compromise between
portability, correctness and simplicity. This is just a default that can be
overridden by setting MAKEFLAGS in the environment.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Declare all AES and DES functions that return int as needing to have
their result checked, and do check the result in our code.
A DES or AES block operation can fail in alternative implementations of
mbedtls_internal_aes_encrypt() (under MBEDTLS_AES_ENCRYPT_ALT),
mbedtls_internal_aes_decrypt() (under MBEDTLS_AES_DECRYPT_ALT),
mbedtls_des_crypt_ecb() (under MBEDTLS_DES_CRYPT_ECB_ALT),
mbedtls_des3_crypt_ecb() (under MBEDTLS_DES3_CRYPT_ECB_ALT).
A failure can happen if the accelerator peripheral is in a bad state.
Several block modes were not catching the error.
This commit does the following code changes, grouped together to avoid
having an intermediate commit where the build fails:
* Add MBEDTLS_CHECK_RETURN to all functions returning int in aes.h and des.h.
* Fix all places where this causes a GCC warning, indicating that our code
was not properly checking the result of an AES operation:
* In library code: on failure, goto exit and return ret.
* In pkey programs: goto exit.
* In the benchmark program: exit (not ideal since there's no error
message, but it's what the code currently does for failures).
* In test code: TEST_ASSERT.
* Changelog entry.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
* There's no compat-2.x.h in Mbed TLS 2.x, but there's a compat-1.3.h which
similarly needs to be excluded.
* mbedtls_config.h is called config.h.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
