Merge pull request RIOT-OS#20674 from mguetschow/psa-crypto-keysize

sys/psa_crypto: remove keysize determination from Kconfig files

sys/include/psa_crypto/psa/crypto_sizes.h

@@ -51,13 +51,12 @@ extern "C" {
 #define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)
 
 /**
- * @brief   Maximum key size determined by the build system.
+ * @brief   Maximum key size in bytes, determined by the build system.
  *
  * @details The maximum key size is set automatically, depending on
  *          the features chosen at compile-time. They should not be
  *          changed manually.
  */
-#ifndef CONFIG_PSA_MAX_KEY_SIZE
 #if (IS_USED(MODULE_PSA_ASYMMETRIC_ECC_P256R1) || \
      IS_USED(MODULE_PSA_ASYMMETRIC_ECC_ED25519) || \
      IS_USED(MODULE_PSA_CIPHER_AES_256_CBC) || \
@@ -73,7 +72,6 @@ extern "C" {
 #else
 #define CONFIG_PSA_MAX_KEY_SIZE 0
 #endif
-#endif
 
 /**
  * @brief   Number of required allocated asymmetric key pair slots.

sys/psa_crypto/Kconfig.keys

@@ -7,46 +7,6 @@
 
 menu "PSA Key Management Configuration"
 
-config PSA_KEY_SIZE_128
-    bool "Application uses key of size 128 Bits"
-    default USEMODULE_PSA_CIPHER_AES_128_CBC
-    default USEMODULE_PSA_CIPHER_AES_128_ECB
-    help
-      Indicates that the maximum PSA key size should be at least 128 bits.
-
-config PSA_KEY_SIZE_192
-    bool "Application uses key of size 192 Bits"
-    default USEMODULE_PSA_CIPHER_AES_192_CBC
-    default USEMODULE_PSA_ASYMMETRIC_ECC_P192R1
-    help
-      Indicates that the maximum PSA key size should be at least 192 bits.
-
-config PSA_KEY_SIZE_256
-    bool "Application uses key of size 256 Bits"
-    default USEMODULE_PSA_ASYMMETRIC_ECC_P256R1
-    default USEMODULE_PSA_ASYMMETRIC_ECC_ED25519
-    default USEMODULE_PSA_CIPHER_AES_256_CBC
-    default USEMODULE_PSA_MAC_HMAC_SHA_256
-    default USEMODULE_PSA_SECURE_ELEMENT_ATECCX08A_ECC_P256
-    help
-      Indicates that the maximum PSA key size should be at least 256 bits.
-
-config PSA_KEY_SIZE_512
-    bool "Application uses key of size 512 Bits"
-    default USEMODULE_PSA_CIPHER_AES_128_CBC
-    help
-      Indicates that the maximum PSA key size should be at least 512 bits.
-
-config PSA_MAX_KEY_SIZE
-    int
-    default 64 if PSA_KEY_SIZE_512
-    default 32 if PSA_KEY_SIZE_256
-    default 24 if PSA_KEY_SIZE_192
-    default 16 if PSA_KEY_SIZE_128
-    default 0
-    help
-      Indicates the maximum PSA key size in bytes.
-
 config PSA_PROTECTED_KEY_COUNT
     int "Specifies number of allocated protected key slots"
     default 5 if USEMODULE_PSA_SECURE_ELEMENT