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Rewrite changelog for #3425 as requested

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
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Steven Cooreman 2020-06-12 11:29:00 +02:00
parent c9b7f78647
commit bd3a6f4497
1 changed files with 7 additions and 8 deletions
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15
ChangeLog.d/psa_curve25519_key_support.txt
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@ -1,10 +1,9 @@
Requirement changes
* Clarify and test the import/export behaviour of PSA key management APIs to
adhere to the to-be-introduced clarification. Montgomery keys
(such as Curve25519) should be imported/exported in masked form.
Features
* The new function mbedtls_ecp_write_key() exports private ECC keys back to
a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
Bugfix
* Update and test the PSA key management against Montgomery keys, since
these need to be imported/exported in little-endian form. Added mirror
function of mbedtls_ecp_read_key called mbedtls_ecp_write_key to retrieve
a private key in the correct form.
* Fix the endianness of Curve25519 keys imported/exported through the PSA
APIs. psa_import_key and psa_export_key will now correctly expect/output
Montgomery keys in little-endian as defined by RFC7748. Contributed by
Steven Cooreman in #3425.