Add various configuration components

configs/README.txt

@@ -0,0 +1,20 @@
+This directory contains example configuration files.
+
+The examples are generally focused on a particular usage case (eg, support for
+a restricted number of ciphersuites) and aim at minimizing resource usage for
+this target. They can be used as a basis for custom configurations.
+
+These files are complete replacements for the default crypto_config.h. To use one of
+them, you can pick one of the following methods:
+
+1. Replace the default file include/psa/crypto_config.h with the chosen one.
+
+2. Define TF_PSA_CRYPTO_CONFIG_FILE and adjust the include path accordingly.
+   For example, using cmake:
+
+    find . -iname '*cmake*' -not -name CMakeLists.txt -exec rm -rf {} +
+    CFLAGS="-I$PWD/configs -DCRYPTO_CONFIG_FILE='<foo.h>'" cmake .
+    make
+
+Note that the second method also works if you want to keep your custom
+configuration file outside the TF-PSA-Crypto tree.

configs/crypto-config-ccm-aes-sha256.h

@@ -0,0 +1,28 @@
+/**
+ * \file configs/crypto-config-ccm-aes-sha256.h
+ *
+ * \brief PSA crypto configuration with only symmetric cryptography: CCM-AES,
+ *        SHA-256 and key derivation (uses HMAC).
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#ifndef PSA_CRYPTO_CONFIG_H
+#define PSA_CRYPTO_CONFIG_H
+
+#define PSA_WANT_ALG_CCM 1
+#define PSA_WANT_ALG_SHA_256 1
+#define PSA_WANT_ALG_TLS12_PRF 1
+#define PSA_WANT_ALG_TLS12_PSK_TO_MS 1
+#define PSA_WANT_KEY_TYPE_DERIVE 1
+#define PSA_WANT_KEY_TYPE_AES 1
+#define PSA_WANT_KEY_TYPE_RAW_DATA 1
+
+
+#define MBEDTLS_PSA_CRYPTO_C
+#define MBEDTLS_CTR_DRBG_C
+#define MBEDTLS_ENTROPY_C
+
+#endif /* PSA_CRYPTO_CONFIG_H */

configs/crypto-config-symmetric-only.h

@@ -0,0 +1,91 @@
+/**
+ * \file crypto-config-symmetric-only.h
+ *
+ * \brief Crypto configuration without any asymmetric cryptography.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+/**
+ * To be used in conjunction with configs/config-symmetric-only.h. */
+
+#ifndef PSA_CRYPTO_CONFIG_H
+#define PSA_CRYPTO_CONFIG_H
+
+#define PSA_WANT_ALG_CBC_NO_PADDING             1
+#define PSA_WANT_ALG_CBC_PKCS7                  1
+#define PSA_WANT_ALG_CCM                        1
+#define PSA_WANT_ALG_CCM_STAR_NO_TAG            1
+#define PSA_WANT_ALG_CFB                        1
+#define PSA_WANT_ALG_CHACHA20_POLY1305          1
+#define PSA_WANT_ALG_CMAC                       1
+#define PSA_WANT_ALG_CTR                        1
+#define PSA_WANT_ALG_ECB_NO_PADDING             1
+#define PSA_WANT_ALG_GCM                        1
+#define PSA_WANT_ALG_HKDF                       1
+#define PSA_WANT_ALG_HKDF_EXTRACT               1
+#define PSA_WANT_ALG_HKDF_EXPAND                1
+#define PSA_WANT_ALG_HMAC                       1
+#define PSA_WANT_ALG_MD5                        1
+#define PSA_WANT_ALG_OFB                        1
+#define PSA_WANT_ALG_RIPEMD160                  1
+#define PSA_WANT_ALG_SHA_1                      1
+#define PSA_WANT_ALG_STREAM_CIPHER              1
+#define PSA_WANT_ALG_SHA_224                    1
+#define PSA_WANT_ALG_SHA_256                    1
+#define PSA_WANT_ALG_SHA_384                    1
+#define PSA_WANT_ALG_SHA_512                    1
+#define PSA_WANT_ALG_SHA3_224                   1
+#define PSA_WANT_ALG_SHA3_256                   1
+#define PSA_WANT_ALG_SHA3_384                   1
+#define PSA_WANT_ALG_SHA3_512                   1
+#define PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS       1
+#define PSA_WANT_ALG_TLS12_PRF                  1
+#define PSA_WANT_ALG_TLS12_PSK_TO_MS            1
+
+/* XTS is not yet supported via the PSA API in Mbed TLS. */
+//#define PSA_WANT_ALG_XTS                        1
+
+#define PSA_WANT_KEY_TYPE_AES                   1
+#define PSA_WANT_KEY_TYPE_ARIA                  1
+#define PSA_WANT_KEY_TYPE_CAMELLIA              1
+#define PSA_WANT_KEY_TYPE_CHACHA20              1
+#define PSA_WANT_KEY_TYPE_DES                   1
+#define PSA_WANT_KEY_TYPE_HMAC                  1
+
+#define MBEDTLS_SELF_TEST
+
+#define MBEDTLS_PSA_CRYPTO_C
+
+/* System support */
+//#define MBEDTLS_HAVE_ASM
+#define MBEDTLS_HAVE_TIME
+#define MBEDTLS_HAVE_TIME_DATE
+
+#define MBEDTLS_FS_IO
+#define MBEDTLS_ENTROPY_NV_SEED
+
+/* Mbed TLS modules */
+#define MBEDTLS_ASN1_PARSE_C
+#define MBEDTLS_ASN1_WRITE_C
+#define MBEDTLS_BASE64_C
+#define MBEDTLS_CTR_DRBG_C
+#define MBEDTLS_ENTROPY_C
+#define MBEDTLS_ERROR_C
+#define MBEDTLS_HMAC_DRBG_C
+#define MBEDTLS_NIST_KW_C
+#define MBEDTLS_OID_C
+#define MBEDTLS_PEM_PARSE_C
+#define MBEDTLS_PEM_WRITE_C
+#define MBEDTLS_PKCS5_C
+#define MBEDTLS_PKCS12_C
+#define MBEDTLS_PLATFORM_C
+#define MBEDTLS_PSA_CRYPTO_SE_C
+#define MBEDTLS_PSA_CRYPTO_STORAGE_C
+#define MBEDTLS_PSA_ITS_FILE_C
+
+//#define MBEDTLS_THREADING_C
+
+#endif /* PSA_CRYPTO_CONFIG_H */

configs/ext/README.md

@@ -0,0 +1,25 @@
+Summary
+-------
+
+The file:
+
+* crypto_config_profile_medium.h
+
+are copyright The Mbed TLS Contributors, and are distributed under the license normally
+used by Mbed TLS: a dual Apache 2.0 or GPLv2-or-later license.
+
+Background
+----------
+
+The file crypto_config_profile_medium.h is taken verbatim from the TF-M source
+code here:
+
+https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/lib/ext/mbedcrypto/mbedcrypto_config
+
+In TF-M, they are distributed under a 3-Clause BSD license, as noted at the top of the files.
+
+In Mbed TLS, with permission from the TF-M project, they are distributed under a dual [Apache-2.0](https://spdx.org/licenses/Apache-2.0.html) OR [GPL-2.0-or-later](https://spdx.org/licenses/GPL-2.0-or-later.html) license, with copyright assigned to The Mbed TLS Contributors.
+
+We only retain the note at the top of the files because the intent is to take these files verbatim,
+for ease of maintenance. Currently however, they contain changes, showing how these configurations
+will need to be adapted for 4.0.