arm-trusted-firmware

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Author	SHA1	Message	Date
Juan Castillo	7d37aa1711	TBB: add mbedTLS authentication related libraries This patch adds the following mbedTLS based libraries: * Cryptographic library It is used by the crypto module to verify a digital signature and a hash. This library relies on mbedTLS to perform the cryptographic operations. mbedTLS sources must be obtained separately. Two key algorithms are currently supported: * RSA-2048 * ECDSA-SECP256R1 The platform is responsible for picking up the required algorithm by defining the 'MBEDTLS_KEY_ALG' variable in the platform makefile. Available options are: * 'rsa' (for RSA-2048) (default option) * 'ecdsa' (for ECDSA-SECP256R1) Hash algorithm currently supported is SHA-256. * Image parser library Used by the image parser module to extract the authentication parameters stored in X509v3 certificates. Change-Id: I597c4be3d29287f2f18b82846973afc142ee0bf0	10 years ago
Juan Castillo	05799ae0c8	TBB: add authentication framework This patch adds the authentication framework that will be used as the base to implement Trusted Board Boot in the Trusted Firmware. The framework comprises the following modules: - Image Parser Module (IPM) This module is responsible for interpreting images, check their integrity and extract authentication information from them during Trusted Board Boot. The module currently supports three types of images i.e. raw binaries, X509v3 certificates and any type specific to a platform. An image parser library must be registered for each image type (the only exception is the raw image parser, which is included in the main module by default). Each parser library (if used) must export a structure in a specific linker section which contains function pointers to: 1. Initialize the library 2. Check the integrity of the image type supported by the library 3. Extract authentication information from the image - Cryptographic Module (CM) This module is responsible for verifying digital signatures and hashes. It relies on an external cryptographic library to perform the cryptographic operations. To register a cryptographic library, the library must use the REGISTER_CRYPTO_LIB macro, passing function pointers to: 1. Initialize the library 2. Verify a digital signature 3. Verify a hash Failing to register a cryptographic library will generate a build time error. - Authentication Module (AM) This module provides methods to authenticate an image, like hash comparison or digital signatures. It uses the image parser module to extract authentication parameters, the crypto module to perform cryptographic operations and the Chain of Trust to authenticate the images. The Chain of Trust (CoT) is a data structure that defines the dependencies between images and the authentication methods that must be followed to authenticate an image. The Chain of Trust, when added, must provide a header file named cot_def.h with the following definitions: - COT_MAX_VERIFIED_PARAMS Integer value indicating the maximum number of authentication parameters an image can present. This value will be used by the authentication module to allocate the memory required to load the parameters in the image descriptor. Change-Id: Ied11bd5cd410e1df8767a1df23bb720ce7e58178	10 years ago

Author

SHA1

Message

Date

Juan Castillo

7d37aa1711

TBB: add mbedTLS authentication related libraries

This patch adds the following mbedTLS based libraries:

* Cryptographic library

It is used by the crypto module to verify a digital signature
and a hash. This library relies on mbedTLS to perform the
cryptographic operations. mbedTLS sources must be obtained
separately.

Two key algorithms are currently supported:

    * RSA-2048
    * ECDSA-SECP256R1

The platform is responsible for picking up the required
algorithm by defining the 'MBEDTLS_KEY_ALG' variable in the
platform makefile. Available options are:

    * 'rsa' (for RSA-2048) (default option)
    * 'ecdsa' (for ECDSA-SECP256R1)

Hash algorithm currently supported is SHA-256.

* Image parser library

Used by the image parser module to extract the authentication
parameters stored in X509v3 certificates.

Change-Id: I597c4be3d29287f2f18b82846973afc142ee0bf0

10 years ago

Juan Castillo

05799ae0c8

TBB: add authentication framework

This patch adds the authentication framework that will be used as
the base to implement Trusted Board Boot in the Trusted Firmware.
The framework comprises the following modules:

- Image Parser Module (IPM)

    This module is responsible for interpreting images, check
    their integrity and extract authentication information from
    them during Trusted Board Boot.

    The module currently supports three types of images i.e.
    raw binaries, X509v3 certificates and any type specific to
    a platform. An image parser library must be registered for
    each image type (the only exception is the raw image parser,
    which is included in the main module by default).

    Each parser library (if used) must export a structure in a
    specific linker section which contains function pointers to:

        1. Initialize the library
        2. Check the integrity of the image type supported by
           the library
        3. Extract authentication information from the image

- Cryptographic Module (CM)

    This module is responsible for verifying digital signatures
    and hashes. It relies on an external cryptographic library
    to perform the cryptographic operations.

    To register a cryptographic library, the library must use the
    REGISTER_CRYPTO_LIB macro, passing function pointers to:

        1. Initialize the library
        2. Verify a digital signature
        3. Verify a hash

    Failing to register a cryptographic library will generate
    a build time error.

- Authentication Module (AM)

    This module provides methods to authenticate an image, like
    hash comparison or digital signatures. It uses the image parser
    module to extract authentication parameters, the crypto module
    to perform cryptographic operations and the Chain of Trust to
    authenticate the images.

    The Chain of Trust (CoT) is a data structure that defines the
    dependencies between images and the authentication methods
    that must be followed to authenticate an image.

The Chain of Trust, when added, must provide a header file named
cot_def.h with the following definitions:

- COT_MAX_VERIFIED_PARAMS

    Integer value indicating the maximum number of authentication
    parameters an image can present. This value will be used by the
    authentication module to allocate the memory required to load
    the parameters in the image descriptor.

Change-Id: Ied11bd5cd410e1df8767a1df23bb720ce7e58178

10 years ago

2 Commits (8d91ecfe3c04ed8a56a9b59768757ce853904420)