Sha256: ae0e0942eb05d0db95aa30ef5dc015fe1621a66c95dd74a6f18c227f0d628b69
Contents?: true
Size: 1.41 KB
Versions: 17
Compression:
Stored size: 1.41 KB
Contents
#
# A Simple impl of AWS Signature V4 for PA-API GetItems
#
require 'openssl'
module AWS
module SigV4
def self.canonical_request(host, payload, time_stamp)
headers = {
'Content-Encoding' => 'amz-1.0',
'Host' => host,
'X-Amz-Content-Sha256' => OpenSSL::Digest::SHA256.hexdigest(payload),
'X-Amz-Date' => time_stamp,
'X-Amz-Target' => "com.amazon.paapi5.v1.ProductAdvertisingAPIv1.GetItems",
}
[
"POST",
"/paapi5/getitems",
'',
headers.keys.sort.map{|k|"#{k.downcase}:#{headers[k]}"}.join("\n") + "\n",
headers.keys.sort.map{|k|k.downcase}.join(';'),
OpenSSL::Digest::SHA256.hexdigest(payload)
].join("\n")
end
def self.string2sign(host, payload, time_stamp)
[
'AWS4-HMAC-SHA256',
time_stamp,
"#{time_stamp[0,8]}/us-west-2/ProductAdvertisingAPI/aws4_request",
OpenSSL::Digest::SHA256.hexdigest(canonical_request(host, payload, time_stamp))
].join("\n")
end
def self.signature(secret, time_stamp, region, host, payload)
k_secret = secret
k_date = hmac("AWS4" + k_secret, time_stamp[0,8])
k_region = hmac(k_date, region)
k_service = hmac(k_region, 'ProductAdvertisingAPI')
k_credential = hmac(k_service, "aws4_request")
OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), k_credential, string2sign(host, payload, time_stamp))
end
def self.hmac(key, value)
OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha256'), key, value)
end
end
end
Version data entries
17 entries across 14 versions & 1 rubygems