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psa: Add storage implementation for files

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Add new functions, psa_load_persistent_key(),
psa_free_persistent_key_data(), and psa_save_persistent_key(), for
managing persistent keys. These functions load to or save from our
internal representation of key slots. Serialization is a concern of the
storage backend implementation and doesn't abstraction-leak into the
lifetime management code.

An initial implementation for files is provided. Additional storage
backends can implement this interface for other storage types.
This commit is contained in:
Darryl Green
2018-06-15 13:06:04 +01:00
parent d9eee3b417
commit db2b8db715
19 changed files with 1004 additions and 0 deletions
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12
include/mbedtls/check_config.h
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@ -506,6 +506,18 @@
#error "MBEDTLS_PSA_CRYPTO_SPM defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) && \
!( defined(MBEDTLS_PSA_CRYPTO_C) && \
defined(MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C) )
#error "MBEDTLS_PSA_CRYPTO_STORAGE_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C) && \
!( defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) && \
defined(MBEDTLS_FS_IO) )
#error "MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_RSA_C) && ( !defined(MBEDTLS_BIGNUM_C) || \
!defined(MBEDTLS_OID_C) )
#error "MBEDTLS_RSA_C defined, but not all prerequisites"

25
include/mbedtls/config.h
View File

@ -2616,6 +2616,31 @@
*/
#define MBEDTLS_PSA_CRYPTO_C
/**
* \def MBEDTLS_PSA_CRYPTO_STORAGE_C
*
* Enable the Platform Security Architecture persistent key storage.
*
* Module: library/psa_crypto_storage.c
*
* Requires: MBEDTLS_PSA_CRYPTO_C, MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C
*
*/
#define MBEDTLS_PSA_CRYPTO_STORAGE_C
/**
* \def MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C
*
* Enable persistent key storage over files for the
* Platform Security Architecture cryptography API.
*
* Module: library/psa_crypto_storage_file.c
*
* Requires: MBEDTLS_PSA_CRYPTO_C, MBEDTLS_FS_IO
*
*/
#define MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C
/**
* \def MBEDTLS_RIPEMD160_C
*