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pk no longer needs pk_write for ECDSA with MBEDTLS_USE_PSA_CRYPTO

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The dependency is still useful for RSA, for which PSA encodes keys with an
ASN.1 structure.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2022-10-04 23:00:42 +02:00 committed by Valerio Setti
parent 13caa94746
commit bbccdd485c
1 changed files with 3 additions and 15 deletions
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18
include/mbedtls/build_info.h
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@ -82,21 +82,9 @@
/* The PK wrappers need pk_write functions to format RSA key objects /* The PK wrappers need pk_write functions to format RSA key objects
* when they are dispatching to the PSA API. This happens under USE_PSA_CRYPTO, * when they are dispatching to the PSA API. This happens under USE_PSA_CRYPTO,
* and also even without USE_PSA_CRYPTO for mbedtls_pk_sign_ext(). * and also even without USE_PSA_CRYPTO for mbedtls_pk_sign_ext(). */
* PSA crypto also needs pk_write to export RSA keys (otherwise the build #if defined(MBEDTLS_PK_C) && defined(MBEDTLS_PSA_CRYPTO_C) && \
* goes through but psa_export_key() and psa_export_public_key() fail on defined(MBEDTLS_RSA_C)
* RSA keys), and pk_parse to work with RSA keys in almost any way.
*/
#if defined(MBEDTLS_PSA_CRYPTO_C) && defined(MBEDTLS_RSA_C)
#define MBEDTLS_PK_C
#define MBEDTLS_PK_WRITE_C
#define MBEDTLS_PK_PARSE_C
#endif
/* Under MBEDTLS_USE_PSA_CRYPTO, the pk module needs pk_write functions
* to pass ECC keys to PSA. */
#if defined(MBEDTLS_PK_C) && \
defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_ECP_C)
#define MBEDTLS_PK_WRITE_C #define MBEDTLS_PK_WRITE_C
#endif #endif