string_to_sign: Construct a String To Sign
In zhangxing-love/qingstor.signature: Qingstor Web Services Request Signatures

Description Usage Arguments Details Author(s) References See Also Examples

View source: R/string_to_sign.R

Construct a String to Sign from request elements

1 2	string_to_sign(algorithm = "AWS4-HMAC-SHA256", datetime, region = Sys.getenv("AWS_DEFAULT_REGION"), service, request_hash)

`algorithm`	A character string containing the hashing algorithm used in signing process. Should only be “AWS4-HMAC-SHA256”.
`datetime`	A character string containing a UTC date in the form of “YYYYMMDDTHHMMSSZ”.
`region`	A character string containing the AWS region for the request.
`service`	A character string containing the AWS service (e.g., “iam”, “host”, “ec2”).
`request_hash`	A character string containing the hash of the canonical request, perhaps as returned by `canonical_request`.

This function creates a “String To Sign”, which is part of the Signature Version 4.

Thomas J. Leeper <thosjleeper@gmail.com>

Create a String to Sign for Signature Version 4

signature_v4, signature_v4_auth

# From AWS documentation
rh <- "3511de7e95d28ecd39e9513b642aee07e54f4941150d8df8bf94b328ef7e55e2"
sts <- 
string_to_sign(datetime = "20110909T233600Z",
               region = "us-east-1",
               service = "iam",
               request_hash = rh)
identical(sts, "AWS4-HMAC-SHA256
20110909T233600Z
20110909/us-east-1/iam/aws4_request
3511de7e95d28ecd39e9513b642aee07e54f4941150d8df8bf94b328ef7e55e2")