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Showing content from https://docs.aws.amazon.com/sdkforruby/api/Aws/SNS/MessageVerifier.html below:

MessageVerifier — AWS SDK for Ruby V2

You are viewing documentation for version 2 of the AWS SDK for Ruby. Version 3 documentation can be found here.

Inherits:

Object

• Object
• Aws::SNS::MessageVerifier

show all

Defined in:

aws-sdk-resources/lib/aws-sdk-resources/services/sns/message_verifier.rb

A utility class that can be used to verify the authenticity of messages sent by Amazon SNS.

verifier = Aws::SNS::MessageVerifier.new

verifier.authentic?(message_body)

verifier.authenticate!(message_body)

You can re-use a single MessageVerifier instance to authenticate multiple SNS messages.

Classes: VerificationError

• #authentic?(message_body) ⇒ Boolean

  Returns true if the given message has been successfully verified.

• #authenticate!(message_body) ⇒ Boolean

  Returns true when the given message has been successfully verified.

• #initialize ⇒ MessageVerifier constructor

  A new instance of MessageVerifier.

Returns a new instance of MessageVerifier.

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# File 'aws-sdk-resources/lib/aws-sdk-resources/services/sns/message_verifier.rb', line 42

def initialize
  @cached_pems = {}
end

Returns true if the given message has been successfully verified. Returns false otherwise.

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# File 'aws-sdk-resources/lib/aws-sdk-resources/services/sns/message_verifier.rb', line 49

def authentic?(message_body)
  authenticate!(message_body)
rescue VerificationError
  false
end

Returns true when the given message has been successfully verified.

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# File 'aws-sdk-resources/lib/aws-sdk-resources/services/sns/message_verifier.rb', line 60

def authenticate!(message_body)
  msg = Json.load(message_body)
  msg = convert_lambda_msg(msg) if is_from_lambda(msg)
  if public_key(msg).verify(sha1, signature(msg), canonical_string(msg))
    true
  else
    msg = 'the authenticity of the message cannot be verified'
    raise VerificationError, msg
  end
end

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