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Define EC curve family constants

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Define constants for ECC curve families and DH group families. These
constants have 0x0000 in the lower 16 bits of the key type.

Support these constants in the implementation and in the PSA metadata
tests.

Switch the slot management and secure element driver HAL tests to the
new curve encodings. This requires SE driver code to become slightly
more clever when figuring out the bit-size of an imported EC key since
it now needs to take the data size into account.

Switch some documentation to the new encodings.

Remove the macro PSA_ECC_CURVE_BITS which can no longer be implemented.
This commit is contained in:
Gilles Peskine
2019-12-03 17:24:19 +01:00
parent 025fccdc32
commit 228abc5773
12 changed files with 245 additions and 49 deletions
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2
docs/getting_started.md
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@ -865,7 +865,7 @@ Mbed Crypto provides a simple way to generate a key or key pair.
psa_set_key_algorithm(&attributes,
PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256));
psa_set_key_type(&attributes,
PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP256R1));
PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_CURVE_SECP_R1));
psa_set_key_bits(&attributes, key_bits);
status = psa_generate_key(&attributes, &handle);
if (status != PSA_SUCCESS) {