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(ql:quickload :aws-sign4)

Common Lisp library for Amazon Web Services signing version 4.

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This library implements the Signature Version 4 Signing Process, as described here:

Highlights: * Passes all tests in the test suite from Amazon. * Tested on ABCL, ACL, CCL, CLISP and SBCL. * Signing only, not tied to a specific http client library.

See also example/example.lisp.


Bind this variable to a function returning two values, the access key and the secret key.


Calculates the signature for a http request.

Parameters: * region - String designator for the AWS region. Default “us-east-1”. * service - String designator for the AWS service name. * method - String designator for the http method. * host - The hostname/endpoint to for the request. Default is the value of the host header. * path - The path part of the request URI. * params - The query parameters of the URI as an assoc list. * headers - The headers as an assoc list as an assoc list. * payload - The payload, as a string or vector of octets. Strings are encoded to octets using UTF-8. * date-header - The name of the date-header, :X-AMZ-DATE or :DATE. Default :X-AMZ-DATE. * request-date - The request date as a local-time timestamp. Default (LOCAL-TIME:NOW).

Returns seven values. Only the two first are needed, the others are useful for debugging.