github.com/opencoff/go-aws-auth (go): Package awsauth implements AWS request signing using Signed Signature Version 2, Signed Signature Version 3, and Signed Signature Version 4. Supports S3 and STS.  sign4url.go - AWS V4 Presigned URL
Keywords: aws-authentication|aws-presigned-url|aws-signature|aws-signature-v4|golang