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Fix and test pk_copy_from_psa with an unsupported algorithm

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Fix mbedtls_pk_copy_from_psa() and mbedtls_pk_copy_public_from_psa() to
still work when the algorithm in the key policy is not an RSA
algorithm (typically PSA_ALG_NONE). Add a dedicated test case and adjust the
test code. Fixes the test case "Copy from PSA: non-exportable -> public, RSA"
when MBEDTLS_PKCS1_V15 is disabled.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2024-03-11 15:23:12 +01:00
parent 17d5b6bda2
commit 0dc79a754d
3 changed files with 38 additions and 11 deletions
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3
library/pk.c
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@ -1444,7 +1444,8 @@ static int copy_from_psa(mbedtls_svc_key_id_t key_id,
if (PSA_ALG_IS_RSA_OAEP(alg_type) || PSA_ALG_IS_RSA_PSS(alg_type)) {
ret = mbedtls_rsa_set_padding(mbedtls_pk_rsa(*pk), MBEDTLS_RSA_PKCS_V21, md_type);
} else {
} else if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg_type) ||
alg_type == PSA_ALG_RSA_PKCS1V15_CRYPT) {
ret = mbedtls_rsa_set_padding(mbedtls_pk_rsa(*pk), MBEDTLS_RSA_PKCS_V15, md_type);
}
if (ret != 0) {