Class: AppInfo::Android::Signature::V3

Inherits:
Base
  • Object
show all
Includes:
Helper::Algorithm, Helper::IOBlock, Helper::Signatures
Defined in:
lib/app_info/android/signatures/v3.rb

Overview

Android v3 Signature

FULL FORMAT: OFFSET DATA TYPE DESCRIPTION

  • @+0 bytes uint32: signer size in bytes

  • @+4 bytes payload signer block

    • @+0 bytes unit32: signed data size in bytes

    • @+4 bytes payload signed data block

      • @+0 bytes unit32: digests with size in bytes

      • @+0 bytes unit32: digests with size in bytes

    • @+W bytes unit32: minSDK

    • @+X+4 bytes unit32: maxSDK

    • @+Y+4 bytes unit32: signatures with size in bytes

      • @+Y+4 bytes payload signed data block

    • @+Z bytes unit32: public key with size in bytes

      • @+Z+4 bytes payload signed data block

Constant Summary collapse

V3_BLOCK_ID =

V3 Signature ID 0xf05368c0

[0xc0, 0x68, 0x53, 0xf0].freeze
V3_1_BLOCK_ID =

V3.1 Signature ID 0x1b93ad61

[0x61, 0xad, 0x93, 0x1b].freeze

Constants included from Helper::Algorithm

Helper::Algorithm::SIG_DSA_WITH_SHA256, Helper::Algorithm::SIG_ECDSA_WITH_SHA256, Helper::Algorithm::SIG_ECDSA_WITH_SHA512, Helper::Algorithm::SIG_RSA_PKCS1_V1_5_WITH_SHA256, Helper::Algorithm::SIG_RSA_PKCS1_V1_5_WITH_SHA512, Helper::Algorithm::SIG_RSA_PSS_WITH_SHA256, Helper::Algorithm::SIG_RSA_PSS_WITH_SHA512, Helper::Algorithm::SIG_STRIPPING_PROTECTION_ATTR_ID, Helper::Algorithm::SIG_VERITY_DSA_WITH_SHA256, Helper::Algorithm::SIG_VERITY_ECDSA_WITH_SHA256, Helper::Algorithm::SIG_VERITY_RSA_PKCS1_V1_5_WITH_SHA256

Constants inherited from Base

Base::DESCRIPTION

Instance Attribute Summary collapse

Attributes inherited from Base

#verified

Instance Method Summary collapse

Methods included from Helper::Algorithm

#algorithem_priority, #algorithm_match, #algorithm_method, #best_algorithem, #compare_algorithem

Methods included from Helper::Signatures

#signature_algorithms, #signed_data_certs, #signed_data_digests, #singers_block, #verify_additional_attrs

Methods included from Helper::IOBlock

#left_bytes_check, #length_prefix_block, #loop_length_prefix_io

Methods inherited from Base

#description, #initialize, #logger, #scheme, verify

Constructor Details

This class inherits a constructor from AppInfo::Android::Signature::Base

Instance Attribute Details

#certificates ⇒ Object (readonly)

Returns the value of attribute certificates.



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# File 'lib/app_info/android/signatures/v3.rb', line 33

def certificates
  @certificates
end

#digests ⇒ Object (readonly)

Returns the value of attribute digests.



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# File 'lib/app_info/android/signatures/v3.rb', line 33

def digests
  @digests
end

Instance Method Details

#verify ⇒ Object 



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# File 'lib/app_info/android/signatures/v3.rb', line 39

def verify
  begin
    signers_block = singers_block(V3_1_BLOCK_ID)
  rescue NotFoundError
    signers_block = singers_block(V3_BLOCK_ID)
  end

  @certificates, @digests = verified_certs(signers_block)
end

#version ⇒ Object 



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# File 'lib/app_info/android/signatures/v3.rb', line 35

def version
  Version::V3
end