diff --git a/.golangci.yml b/.golangci.yml
index 0aed855d..1bab3ba3 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -64,6 +64,7 @@ issues:
     - should have a package comment, unless it's in another file for this package
     - error strings should not be capitalized or end with punctuation or a newline
     - Wrapf call needs 1 arg but has 2 args
+    - cs.NegotiatedProtocolIsMutual is deprecated
 # golangci.com configuration
 # https://github.com/golangci/golangci/wiki/Configuration
 service:
diff --git a/.travis.yml b/.travis.yml
index ec6dce01..6cf93c46 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,30 +1,34 @@
 language: go
+os: linux
+dist: focal
+services:
+  - docker
 go:
-- 1.14.x
+  - 1.14.x
 addons:
   apt:
     packages:
-    - debhelper
-    - fakeroot
-    - bash-completion
-    - libpcsclite-dev
+      - debhelper
+      - fakeroot
+      - bash-completion
+      - libpcsclite-dev
 env:
   global:
-  - V=1
+    - V=1
 before_script:
-- make bootstrap
+  - make bootstrap
 script:
-- make
-- make artifacts
+  - make
+  - make artifacts
 after_success:
-- bash <(curl -s https://codecov.io/bash) -t "$CODECOV_TOKEN" || echo "Codecov did
-  not collect coverage reports"
+  - bash <(curl -s https://codecov.io/bash) -t "$CODECOV_TOKEN" || echo "Codecov did
+    not collect coverage reports"
 notifications:
   email: false
 deploy:
   provider: releases
-  skip_cleanup: true
-  api_key:
+  cleanup: false
+  token:
     secure: EVV43Vkqn67hhKGYn4WhQp2YO6KFmUDSkLXjYXYGX07Fm8p5KjRFBPOz9LV83QrvVmLigvg0CtR8Jqqcnq2SUhus3nhZaN2g19NhMypZLioyOVP0kAkas8ocuvxkwz3YxIK/yMrmTKbQ7JGXtbc8IjAox9ovNo1fFIQmVMAzPfu++OWBJ0j+gUqKtpaNA7gzsSv8UOw3/T3hNm6E1IbpWxl9BPSOzUOE9F/QOThANzifGfdxvqNJFkAgqu5DVPz8zQNbMrz4zH+KwASKxd6hjhzSSMzouKzOEHTA/elDCHEjke0Jos29MkGWHcIydLtCD95DGecqM8BFSC9f2acHDjmUO1rdfoLA3Pt+UiZJuTwyQm/jrHHhRnH8oJpK15G5LvxSqzY9YDWpAk38+jMw/udW6wt7BGAU8FEXLbq0bsFL3yfTepeWjmzT5WS0YXdiBz2SEK+Og9R2bSdtl4owghRzKNio5DNPuYAbqbpi+jqzqQVLj27x7LWoQ0MHvZcz9U+oO00r6M1tDCmFVRdtfgb2H+MIDY69qYGo5qoGMfH1btCWR8bA9wSYB/Z7hW/xZT9r7f/d5/P40k8yKINmTZqyUTQeplrE3y4BPVzKksclczBZa67syIUQ49I35QppnH4GFQHUwlra7r3W9zfZRvaLnp5qOIKAQe3MAIZqtLg=
   file_glob: true
   file: .travis-releases/*
diff --git a/Makefile b/Makefile
index d07ba8fb..9fb552d1 100644
--- a/Makefile
+++ b/Makefile
@@ -46,17 +46,25 @@ VERSION ?= $(shell [ -d .git ] && git describe --tags --always --dirty="-dev")
 # If we are not in an active git dir then try reading the version from .VERSION.
 # .VERSION contains a slug populated by `git archive`.
 VERSION := $(or $(VERSION),$(shell ./.version.sh .VERSION))
+	ifeq ($(TRAVIS_BRANCH),master)
 PUSHTYPE := master
+	else
+PUSHTYPE := branch
+	endif
 endif
 
 VERSION := $(shell echo $(VERSION) | sed 's/^v//')
+DEB_VERSION := $(shell echo $(VERSION) | sed 's/-/~/g')
 
 ifdef V
 $(info    TRAVIS_TAG is $(TRAVIS_TAG))
 $(info    VERSION is $(VERSION))
+$(info    DEB_VERSION is $(DEB_VERSION))
 $(info    PUSHTYPE is $(PUSHTYPE))
 endif
 
+include make/docker.mk
+
 #########################################
 # Build
 #########################################
@@ -134,13 +142,15 @@ lint:
 
 INSTALL_PREFIX?=/usr/
 
-install: $(PREFIX)bin/$(BINNAME) $(PREFIX)bin/$(CLOUDKMS_BINNAME)
+install: $(PREFIX)bin/$(BINNAME) $(PREFIX)bin/$(CLOUDKMS_BINNAME) $(PREFIX)bin/$(AWSKMS_BINNAME)
 	$Q install -D $(PREFIX)bin/$(BINNAME) $(DESTDIR)$(INSTALL_PREFIX)bin/$(BINNAME)
 	$Q install -D $(PREFIX)bin/$(CLOUDKMS_BINNAME) $(DESTDIR)$(INSTALL_PREFIX)bin/$(CLOUDKMS_BINNAME)
+	$Q install -D $(PREFIX)bin/$(AWSKMS_BINNAME) $(DESTDIR)$(INSTALL_PREFIX)bin/$(AWSKMS_BINNAME)
 
 uninstall:
 	$Q rm -f $(DESTDIR)$(INSTALL_PREFIX)/bin/$(BINNAME)
 	$Q rm -f $(DESTDIR)$(INSTALL_PREFIX)/bin/$(CLOUDKMS_BINNAME)
+	$Q rm -f $(DESTDIR)$(INSTALL_PREFIX)/bin/$(AWSKMS_BINNAME)
 
 .PHONY: install uninstall
 
@@ -155,6 +165,12 @@ endif
 ifneq ($(CLOUDKMS_BINNAME),"")
 	$Q rm -f bin/$(CLOUDKMS_BINNAME)
 endif
+ifneq ($(AWSKMS_BINNAME),"")
+	$Q rm -f bin/$(AWSKMS_BINNAME)
+endif
+ifneq ($(YUBIKEY_BINNAME),"")
+	$Q rm -f bin/$(YUBIKEY_BINNAME)
+endif
 
 .PHONY: clean
 
@@ -167,82 +183,12 @@ run:
 
 .PHONY: run
 
-#########################################
-# Building Docker Image
-#
-# Builds a dockerfile for step by building a linux version of the step-cli and
-# then copying the specific binary when building the container.
-#
-# This ensures the container is as small as possible without having to deal
-# with getting access to private repositories inside the container during build
-# time.
-#########################################
-
-# XXX We put the output for the build in 'output' so we don't mess with how we
-# do rule overriding from the base Makefile (if you name it 'build' it messes up
-# the wildcarding).
-DOCKER_OUTPUT=$(OUTPUT_ROOT)docker/
-
-DOCKER_MAKE=V=$V GOOS_OVERRIDE='GOOS=linux GOARCH=amd64' PREFIX=$(1) make $(1)bin/$(2)
-DOCKER_BUILD=$Q docker build -t smallstep/$(1):latest -f docker/$(2) --build-arg BINPATH=$(DOCKER_OUTPUT)bin/$(1) .
-
-docker: docker-make docker/Dockerfile.step-ca
-	$(call DOCKER_BUILD,step-ca,Dockerfile.step-ca)
-
-docker-make:
-	mkdir -p $(DOCKER_OUTPUT)
-	$(call DOCKER_MAKE,$(DOCKER_OUTPUT),step-ca)
-
-.PHONY: docker docker-make
-
-#################################################
-# Releasing Docker Images
-#
-# Using the docker build infrastructure, this section is responsible for
-# logging into docker hub and pushing the built docker containers up with the
-# appropriate tags.
-#################################################
-
-DOCKER_TAG=docker tag smallstep/$(1):latest smallstep/$(1):$(2)
-DOCKER_PUSH=docker push smallstep/$(1):$(2)
-
-docker-tag:
-	$(call DOCKER_TAG,step-ca,$(VERSION))
-
-docker-push-tag: docker-tag
-	$(call DOCKER_PUSH,step-ca,$(VERSION))
-
-docker-push-tag-latest:
-	$(call DOCKER_PUSH,step-ca,latest)
-
-# Rely on DOCKER_USERNAME and DOCKER_PASSWORD being set inside the CI or
-# equivalent environment
-docker-login:
-	$Q docker login -u="$(DOCKER_USERNAME)" -p="$(DOCKER_PASSWORD)"
-
-.PHONY: docker-login docker-tag docker-push-tag docker-push-tag-latest
-
-#################################################
-# Targets for pushing the docker images
-#################################################
-
-# For all builds we build the docker container
-docker-master: docker
-
-# For all builds with a release candidate tag
-docker-release-candidate: docker-master docker-login docker-push-tag
-
-# For all builds with a release tag
-docker-release: docker-release-candidate docker-push-tag-latest
-
-.PHONY: docker-master docker-release-candidate docker-release
-
 #########################################
 # Debian
 #########################################
 
 changelog:
-	$Q echo "step-certificates ($(VERSION)) unstable; urgency=medium" > debian/changelog
+	$Q echo "step-certificates ($(DEB_VERSION)) unstable; urgency=medium" > debian/changelog
 	$Q echo >> debian/changelog
 	$Q echo "  * See https://github.com/smallstep/certificates/releases" >> debian/changelog
 	$Q echo >> debian/changelog
@@ -270,7 +216,7 @@ define BUNDLE_MAKE
 	# $(2) -- Go Architecture (e.g. amd64, arm, arm64, etc.)
 	# $(3) -- Go ARM architectural family (e.g. 7, 8, etc.)
 	# $(4) -- Parent directory for executables generated by 'make'.
-	$(q) GOOS_OVERRIDE='GOOS=$(1) GOARCH=$(2) GOARM=$(3)' PREFIX=$(4) make $(4)bin/$(BINNAME) $(4)bin/$(CLOUDKMS_BINNAME)
+	$(q) GOOS_OVERRIDE='GOOS=$(1) GOARCH=$(2) GOARM=$(3)' PREFIX=$(4) make $(4)bin/$(BINNAME) $(4)bin/$(CLOUDKMS_BINNAME) $(4)bin/$(AWSKMS_BINNAME)
 endef
 
 binary-linux:
@@ -290,16 +236,16 @@ define BUNDLE
 	# $(2) -- Step Platform Name
 	# $(3) -- Step Binary Architecture
 	# $(4) -- Step Binary Name (For Windows Comaptibility)
-	$(q) ./make/bundle.sh "$(BINARY_OUTPUT)$(1)" "$(RELEASE)" "$(VERSION)" "$(2)" "$(3)" "$(4)" "$(5)"
+	$(q) ./make/bundle.sh "$(BINARY_OUTPUT)$(1)" "$(RELEASE)" "$(VERSION)" "$(2)" "$(3)" "$(4)" "$(5)" "$(6)"
 endef
 
 bundle-linux: binary-linux binary-linux-arm64 binary-linux-armv7
-	$(call BUNDLE,linux,linux,amd64,$(BINNAME),$(CLOUDKMS_BINNAME))
-	$(call BUNDLE,linux.arm64,linux,arm64,$(BINNAME),$(CLOUDKMS_BINNAME))
-	$(call BUNDLE,linux.armv7,linux,armv7,$(BINNAME),$(CLOUDKMS_BINNAME))
+	$(call BUNDLE,linux,linux,amd64,$(BINNAME),$(CLOUDKMS_BINNAME),$(AWSKMS_BINNAME))
+	$(call BUNDLE,linux.arm64,linux,arm64,$(BINNAME),$(CLOUDKMS_BINNAME),$(AWSKMS_BINNAME))
+	$(call BUNDLE,linux.armv7,linux,armv7,$(BINNAME),$(CLOUDKMS_BINNAME),$(AWSKMS_BINNAME))
 
 bundle-darwin: binary-darwin
-	$(call BUNDLE,darwin,darwin,amd64,$(BINNAME),$(CLOUDKMS_BINNAME))
+	$(call BUNDLE,darwin,darwin,amd64,$(BINNAME),$(CLOUDKMS_BINNAME),$(AWSKMS_BINNAME))
 
 .PHONY: binary-linux binary-darwin bundle-linux bundle-darwin
 
@@ -323,6 +269,9 @@ artifacts-tag: artifacts-linux-tag artifacts-darwin-tag artifacts-archive-tag
 # Targets for creating step artifacts
 #################################################
 
+# For all builds that are not tagged and not on the master branch
+artifacts-branch:
+
 # For all builds that are not tagged
 artifacts-master:
 
diff --git a/acme/api/handler.go b/acme/api/handler.go
index dd30c7c1..921e614e 100644
--- a/acme/api/handler.go
+++ b/acme/api/handler.go
@@ -2,6 +2,8 @@ package api
 
 import (
 	"context"
+	"crypto/x509"
+	"encoding/pem"
 	"fmt"
 	"net/http"
 
@@ -162,6 +164,18 @@ func (h *Handler) GetCertificate(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	block, _ := pem.Decode(certBytes)
+	if block == nil {
+		api.WriteError(w, acme.ServerInternalErr(errors.New("failed to decode any certificates from generated certBytes")))
+		return
+	}
+	cert, err := x509.ParseCertificate(block.Bytes)
+	if err != nil {
+		api.WriteError(w, acme.Wrap(err, "failed to parse generated leaf certificate"))
+		return
+	}
+
+	api.LogCertificate(w, cert)
 	w.Header().Set("Content-Type", "application/pem-certificate-chain; charset=utf-8")
 	w.Write(certBytes)
 }
diff --git a/acme/api/handler_test.go b/acme/api/handler_test.go
index ee602da6..7e19ea75 100644
--- a/acme/api/handler_test.go
+++ b/acme/api/handler_test.go
@@ -526,6 +526,43 @@ func TestHandlerGetCertificate(t *testing.T) {
 				problem:    acme.ServerInternalErr(errors.New("force")),
 			}
 		},
+		"fail/decode-leaf-for-loggger": func(t *testing.T) test {
+			acc := &acme.Account{ID: "accID"}
+			ctx := context.WithValue(context.Background(), acme.AccContextKey, acc)
+			ctx = context.WithValue(ctx, chi.RouteCtxKey, chiCtx)
+			return test{
+				auth: &mockAcmeAuthority{
+					getCertificate: func(accID, id string) ([]byte, error) {
+						assert.Equals(t, accID, acc.ID)
+						assert.Equals(t, id, certID)
+						return []byte("foo"), nil
+					},
+				},
+				ctx:        ctx,
+				statusCode: 500,
+				problem:    acme.ServerInternalErr(errors.New("failed to decode any certificates from generated certBytes")),
+			}
+		},
+		"fail/parse-x509-leaf-for-logger": func(t *testing.T) test {
+			acc := &acme.Account{ID: "accID"}
+			ctx := context.WithValue(context.Background(), acme.AccContextKey, acc)
+			ctx = context.WithValue(ctx, chi.RouteCtxKey, chiCtx)
+			return test{
+				auth: &mockAcmeAuthority{
+					getCertificate: func(accID, id string) ([]byte, error) {
+						assert.Equals(t, accID, acc.ID)
+						assert.Equals(t, id, certID)
+						return pem.EncodeToMemory(&pem.Block{
+							Type:  "CERTIFICATE REQUEST",
+							Bytes: []byte("foo"),
+						}), nil
+					},
+				},
+				ctx:        ctx,
+				statusCode: 500,
+				problem:    acme.ServerInternalErr(errors.New("failed to parse generated leaf certificate")),
+			}
+		},
 		"ok": func(t *testing.T) test {
 			acc := &acme.Account{ID: "accID"}
 			ctx := context.WithValue(context.Background(), acme.AccContextKey, acc)
@@ -565,7 +602,7 @@ func TestHandlerGetCertificate(t *testing.T) {
 				prob := tc.problem.ToACME()
 
 				assert.Equals(t, ae.Type, prob.Type)
-				assert.Equals(t, ae.Detail, prob.Detail)
+				assert.HasPrefix(t, ae.Detail, prob.Detail)
 				assert.Equals(t, ae.Identifier, prob.Identifier)
 				assert.Equals(t, ae.Subproblems, prob.Subproblems)
 				assert.Equals(t, res.Header["Content-Type"], []string{"application/problem+json"})
diff --git a/api/api.go b/api/api.go
index 0cabb416..699092a7 100644
--- a/api/api.go
+++ b/api/api.go
@@ -394,7 +394,8 @@ func logOtt(w http.ResponseWriter, token string) {
 	}
 }
 
-func logCertificate(w http.ResponseWriter, cert *x509.Certificate) {
+// LogCertificate add certificate fields to the log message.
+func LogCertificate(w http.ResponseWriter, cert *x509.Certificate) {
 	if rl, ok := w.(logging.ResponseLogger); ok {
 		m := map[string]interface{}{
 			"serial":      cert.SerialNumber,
@@ -412,7 +413,11 @@ func logCertificate(w http.ResponseWriter, cert *x509.Certificate) {
 				if err != nil || len(rest) > 0 {
 					break
 				}
-				m["provisioner"] = fmt.Sprintf("%s (%s)", val.Name, val.CredentialID)
+				if len(val.CredentialID) > 0 {
+					m["provisioner"] = fmt.Sprintf("%s (%s)", val.Name, val.CredentialID)
+				} else {
+					m["provisioner"] = fmt.Sprintf("%s", val.Name)
+				}
 				break
 			}
 		}
diff --git a/api/rekey.go b/api/rekey.go
index 2d24dbb8..c0d88e55 100644
--- a/api/rekey.go
+++ b/api/rekey.go
@@ -54,7 +54,7 @@ func (h *caHandler) Rekey(w http.ResponseWriter, r *http.Request) {
 		caPEM = certChainPEM[1]
 	}
 
-	logCertificate(w, certChain[0])
+	LogCertificate(w, certChain[0])
 	JSONStatus(w, &SignResponse{
 		ServerPEM:    certChainPEM[0],
 		CaPEM:        caPEM,
diff --git a/api/renew.go b/api/renew.go
index bf32518b..74ef2034 100644
--- a/api/renew.go
+++ b/api/renew.go
@@ -25,7 +25,7 @@ func (h *caHandler) Renew(w http.ResponseWriter, r *http.Request) {
 		caPEM = certChainPEM[1]
 	}
 
-	logCertificate(w, certChain[0])
+	LogCertificate(w, certChain[0])
 	JSONStatus(w, &SignResponse{
 		ServerPEM:    certChainPEM[0],
 		CaPEM:        caPEM,
diff --git a/api/revoke.go b/api/revoke.go
index 547ed366..21c3154c 100644
--- a/api/revoke.go
+++ b/api/revoke.go
@@ -91,7 +91,7 @@ func (h *caHandler) Revoke(w http.ResponseWriter, r *http.Request) {
 		// TODO: should probably be checking if the certificate was revoked here.
 		// Will need to thread that request down to the authority, so will need
 		// to add API for that.
-		logCertificate(w, opts.Crt)
+		LogCertificate(w, opts.Crt)
 		opts.MTLS = true
 	}
 
diff --git a/api/sign.go b/api/sign.go
index a834b520..69e9a1a5 100644
--- a/api/sign.go
+++ b/api/sign.go
@@ -82,7 +82,7 @@ func (h *caHandler) Sign(w http.ResponseWriter, r *http.Request) {
 	if len(certChainPEM) > 1 {
 		caPEM = certChainPEM[1]
 	}
-	logCertificate(w, certChain[0])
+	LogCertificate(w, certChain[0])
 	JSONStatus(w, &SignResponse{
 		ServerPEM:    certChainPEM[0],
 		CaPEM:        caPEM,
diff --git a/authority/provisioner/aws.go b/authority/provisioner/aws.go
index 31cf340b..db3389c8 100644
--- a/authority/provisioner/aws.go
+++ b/authority/provisioner/aws.go
@@ -31,6 +31,19 @@ const awsIdentityURL = "http://169.254.169.254/latest/dynamic/instance-identity/
 // awsSignatureURL is the url used to retrieve the instance identity signature.
 const awsSignatureURL = "http://169.254.169.254/latest/dynamic/instance-identity/signature"
 
+// awsAPITokenURL is the url used to get the IMDSv2 API token
+const awsAPITokenURL = "http://169.254.169.254/latest/api/token"
+
+// awsAPITokenTTL is the default TTL to use when requesting IMDSv2 API tokens
+// -- we keep this short-lived since we get a new token with every call to readURL()
+const awsAPITokenTTL = "30"
+
+// awsMetadataTokenHeader is the header that must be passed with every IMDSv2 request
+const awsMetadataTokenHeader = "X-aws-ec2-metadata-token"
+
+// awsMetadataTokenTTLHeader is the header used to indicate the token TTL requested
+const awsMetadataTokenTTLHeader = "X-aws-ec2-metadata-token-ttl-seconds"
+
 // awsCertificate is the certificate used to validate the instance identity
 // signature.
 const awsCertificate = `-----BEGIN CERTIFICATE-----
@@ -60,6 +73,8 @@ const awsSignatureAlgorithm = x509.SHA256WithRSA
 type awsConfig struct {
 	identityURL        string
 	signatureURL       string
+	tokenURL           string
+	tokenTTL           string
 	certificate        *x509.Certificate
 	signatureAlgorithm x509.SignatureAlgorithm
 }
@@ -76,6 +91,8 @@ func newAWSConfig() (*awsConfig, error) {
 	return &awsConfig{
 		identityURL:        awsIdentityURL,
 		signatureURL:       awsSignatureURL,
+		tokenURL:           awsAPITokenURL,
+		tokenTTL:           awsAPITokenTTL,
 		certificate:        cert,
 		signatureAlgorithm: awsSignatureAlgorithm,
 	}, nil
@@ -132,6 +149,7 @@ type AWS struct {
 	Accounts               []string `json:"accounts"`
 	DisableCustomSANs      bool     `json:"disableCustomSANs"`
 	DisableTrustOnFirstUse bool     `json:"disableTrustOnFirstUse"`
+	IMDSVersions           []string `json:"imdsVersions"`
 	InstanceAge            Duration `json:"instanceAge,omitempty"`
 	Claims                 *Claims  `json:"claims,omitempty"`
 	Options                *Options `json:"options,omitempty"`
@@ -186,14 +204,14 @@ func (p *AWS) GetIdentityToken(subject, caURL string) (string, error) {
 	var idoc awsInstanceIdentityDocument
 	doc, err := p.readURL(p.config.identityURL)
 	if err != nil {
-		return "", errors.Wrap(err, "error retrieving identity document, are you in an AWS VM?")
+		return "", errors.Wrap(err, "error retrieving identity document:\n  Are you in an AWS VM?\n  Is the metadata service enabled?\n  Are you using the proper metadata service version?")
 	}
 	if err := json.Unmarshal(doc, &idoc); err != nil {
 		return "", errors.Wrap(err, "error unmarshaling identity document")
 	}
 	sig, err := p.readURL(p.config.signatureURL)
 	if err != nil {
-		return "", errors.Wrap(err, "error retrieving identity document signature, are you in an AWS VM?")
+		return "", errors.Wrap(err, "error retrieving identity document:\n  Are you in an AWS VM?\n  Is the metadata service enabled?\n  Are you using the proper metadata service version?")
 	}
 	signature, err := base64.StdEncoding.DecodeString(string(sig))
 	if err != nil {
@@ -267,6 +285,22 @@ func (p *AWS) Init(config Config) (err error) {
 		return err
 	}
 	p.audiences = config.Audiences.WithFragment(p.GetID())
+
+	// validate IMDS versions
+	if len(p.IMDSVersions) == 0 {
+		p.IMDSVersions = []string{"v2", "v1"}
+	}
+	for _, v := range p.IMDSVersions {
+		switch v {
+		case "v1":
+			// valid
+		case "v2":
+			// valid
+		default:
+			return errors.Errorf("%s: not a supported AWS Instance Metadata Service version", v)
+		}
+	}
+
 	return nil
 }
 
@@ -353,12 +387,90 @@ func (p *AWS) checkSignature(signed, signature []byte) error {
 // using pkg/errors to avoid verbose errors, the caller should use it and write
 // the appropriate error.
 func (p *AWS) readURL(url string) ([]byte, error) {
-	r, err := http.Get(url)
+	var resp *http.Response
+	var err error
+
+	for _, v := range p.IMDSVersions {
+		switch v {
+		case "v1":
+			resp, err = p.readURLv1(url)
+			if err == nil && resp.StatusCode < 400 {
+				return p.readResponseBody(resp)
+			}
+		case "v2":
+			resp, err = p.readURLv2(url)
+			if err == nil && resp.StatusCode < 400 {
+				return p.readResponseBody(resp)
+			}
+		default:
+			return nil, fmt.Errorf("%s: not a supported AWS Instance Metadata Service version", v)
+		}
+		if resp != nil {
+			resp.Body.Close()
+		}
+	}
+
+	// all versions have been exhausted and we haven't returned successfully yet so pass
+	// the error on to the caller
+	if err != nil {
+		return nil, err
+	}
+	return nil, fmt.Errorf("Request for metadata returned non-successful status code %d",
+		resp.StatusCode)
+}
+
+func (p *AWS) readURLv1(url string) (*http.Response, error) {
+	client := http.Client{}
+
+	req, err := http.NewRequest(http.MethodGet, url, http.NoBody)
+	if err != nil {
+		return nil, err
+	}
+	resp, err := client.Do(req)
 	if err != nil {
 		return nil, err
 	}
-	defer r.Body.Close()
-	b, err := ioutil.ReadAll(r.Body)
+	return resp, nil
+}
+
+func (p *AWS) readURLv2(url string) (*http.Response, error) {
+	client := http.Client{}
+
+	// first get the token
+	req, err := http.NewRequest(http.MethodPut, p.config.tokenURL, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set(awsMetadataTokenTTLHeader, p.config.tokenTTL)
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return nil, fmt.Errorf("Request for API token returned non-successful status code %d", resp.StatusCode)
+	}
+	token, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	// now make the request
+	req, err = http.NewRequest(http.MethodGet, url, http.NoBody)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set(awsMetadataTokenHeader, string(token))
+	resp, err = client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+func (p *AWS) readResponseBody(resp *http.Response) ([]byte, error) {
+	defer resp.Body.Close()
+	b, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
diff --git a/authority/provisioner/aws_test.go b/authority/provisioner/aws_test.go
index 3da945c1..97952911 100644
--- a/authority/provisioner/aws_test.go
+++ b/authority/provisioner/aws_test.go
@@ -104,36 +104,42 @@ func TestAWS_GetIdentityToken(t *testing.T) {
 	p2.Accounts = p1.Accounts
 	p2.config.identityURL = srv.URL + "/bad-document"
 	p2.config.signatureURL = p1.config.signatureURL
+	p2.config.tokenURL = p1.config.tokenURL
 
 	p3, err := generateAWS()
 	assert.FatalError(t, err)
 	p3.Accounts = p1.Accounts
 	p3.config.signatureURL = srv.URL
 	p3.config.identityURL = p1.config.identityURL
+	p3.config.tokenURL = p1.config.tokenURL
 
 	p4, err := generateAWS()
 	assert.FatalError(t, err)
 	p4.Accounts = p1.Accounts
 	p4.config.signatureURL = srv.URL + "/bad-signature"
 	p4.config.identityURL = p1.config.identityURL
+	p4.config.tokenURL = p1.config.tokenURL
 
 	p5, err := generateAWS()
 	assert.FatalError(t, err)
 	p5.Accounts = p1.Accounts
 	p5.config.identityURL = "https://1234.1234.1234.1234"
 	p5.config.signatureURL = p1.config.signatureURL
+	p5.config.tokenURL = p1.config.tokenURL
 
 	p6, err := generateAWS()
 	assert.FatalError(t, err)
 	p6.Accounts = p1.Accounts
 	p6.config.identityURL = p1.config.identityURL
 	p6.config.signatureURL = "https://1234.1234.1234.1234"
+	p6.config.tokenURL = p1.config.tokenURL
 
 	p7, err := generateAWS()
 	assert.FatalError(t, err)
 	p7.Accounts = p1.Accounts
 	p7.config.identityURL = srv.URL + "/bad-json"
 	p7.config.signatureURL = p1.config.signatureURL
+	p7.config.tokenURL = p1.config.tokenURL
 
 	caURL := "https://ca.smallstep.com"
 	u, err := url.Parse(caURL)
@@ -181,6 +187,49 @@ func TestAWS_GetIdentityToken(t *testing.T) {
 	}
 }
 
+func TestAWS_GetIdentityToken_V1Only(t *testing.T) {
+	aws, srv, err := generateAWSWithServerV1Only()
+	assert.FatalError(t, err)
+	defer srv.Close()
+
+	subject := "foo.local"
+	caURL := "https://ca.smallstep.com"
+	u, err := url.Parse(caURL)
+	assert.Nil(t, err)
+
+	token, err := aws.GetIdentityToken(subject, caURL)
+	assert.Nil(t, err)
+
+	_, c, err := parseAWSToken(token)
+	if assert.NoError(t, err) {
+		assert.Equals(t, awsIssuer, c.Issuer)
+		assert.Equals(t, subject, c.Subject)
+		assert.Equals(t, jose.Audience{u.ResolveReference(&url.URL{Path: "/1.0/sign", Fragment: aws.GetID()}).String()}, c.Audience)
+		assert.Equals(t, aws.Accounts[0], c.document.AccountID)
+		err = aws.config.certificate.CheckSignature(
+			aws.config.signatureAlgorithm, c.Amazon.Document, c.Amazon.Signature)
+		assert.NoError(t, err)
+	}
+}
+
+func TestAWS_GetIdentityToken_BadIDMS(t *testing.T) {
+	aws, srv, err := generateAWSWithServer()
+
+	aws.IMDSVersions = []string{"bad"}
+
+	assert.FatalError(t, err)
+	defer srv.Close()
+
+	subject := "foo.local"
+	caURL := "https://ca.smallstep.com"
+
+	token, err := aws.GetIdentityToken(subject, caURL)
+	assert.Equals(t, token, "")
+
+	badIDMS := errors.New("bad: not a supported AWS Instance Metadata Service version")
+	assert.HasSuffix(t, err.Error(), badIDMS.Error())
+}
+
 func TestAWS_Init(t *testing.T) {
 	config := Config{
 		Claims: globalProvisionerClaims,
@@ -197,6 +246,7 @@ func TestAWS_Init(t *testing.T) {
 		DisableCustomSANs      bool
 		DisableTrustOnFirstUse bool
 		InstanceAge            Duration
+		IMDSVersions           []string
 		Claims                 *Claims
 	}
 	type args struct {
@@ -208,12 +258,16 @@ func TestAWS_Init(t *testing.T) {
 		args    args
 		wantErr bool
 	}{
-		{"ok", fields{"AWS", "name", []string{"account"}, false, false, zero, nil}, args{config}, false},
-		{"ok", fields{"AWS", "name", []string{"account"}, true, true, Duration{Duration: 1 * time.Minute}, nil}, args{config}, false},
-		{"fail type ", fields{"", "name", []string{"account"}, false, false, zero, nil}, args{config}, true},
-		{"fail name", fields{"AWS", "", []string{"account"}, false, false, zero, nil}, args{config}, true},
-		{"bad instance age", fields{"AWS", "name", []string{"account"}, false, false, Duration{Duration: -1 * time.Minute}, nil}, args{config}, true},
-		{"fail claims", fields{"AWS", "name", []string{"account"}, false, false, zero, badClaims}, args{config}, true},
+		{"ok", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{"v1", "v2"}, nil}, args{config}, false},
+		{"ok/v1", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{"v1"}, nil}, args{config}, false},
+		{"ok/v2", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{"v2"}, nil}, args{config}, false},
+		{"ok/empty", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{}, nil}, args{config}, false},
+		{"ok/duration", fields{"AWS", "name", []string{"account"}, true, true, Duration{Duration: 1 * time.Minute}, []string{"v1", "v2"}, nil}, args{config}, false},
+		{"fail type ", fields{"", "name", []string{"account"}, false, false, zero, []string{"v1", "v2"}, nil}, args{config}, true},
+		{"fail name", fields{"AWS", "", []string{"account"}, false, false, zero, []string{"v1", "v2"}, nil}, args{config}, true},
+		{"bad instance age", fields{"AWS", "name", []string{"account"}, false, false, Duration{Duration: -1 * time.Minute}, []string{"v1", "v2"}, nil}, args{config}, true},
+		{"fail/imds", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{"bad"}, nil}, args{config}, true},
+		{"fail claims", fields{"AWS", "name", []string{"account"}, false, false, zero, []string{"v1", "v2"}, badClaims}, args{config}, true},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -224,6 +278,7 @@ func TestAWS_Init(t *testing.T) {
 				DisableCustomSANs:      tt.fields.DisableCustomSANs,
 				DisableTrustOnFirstUse: tt.fields.DisableTrustOnFirstUse,
 				InstanceAge:            tt.fields.InstanceAge,
+				IMDSVersions:           tt.fields.IMDSVersions,
 				Claims:                 tt.fields.Claims,
 			}
 			if err := p.Init(tt.args.config); (err != nil) != tt.wantErr {
diff --git a/authority/provisioner/utils_test.go b/authority/provisioner/utils_test.go
index 9a4f4a09..0f4ceb05 100644
--- a/authority/provisioner/utils_test.go
+++ b/authority/provisioner/utils_test.go
@@ -408,14 +408,17 @@ func generateAWS() (*AWS, error) {
 		return nil, errors.Wrap(err, "error parsing AWS certificate")
 	}
 	return &AWS{
-		Type:     "AWS",
-		Name:     name,
-		Accounts: []string{accountID},
-		Claims:   &globalProvisionerClaims,
-		claimer:  claimer,
+		Type:         "AWS",
+		Name:         name,
+		Accounts:     []string{accountID},
+		Claims:       &globalProvisionerClaims,
+		IMDSVersions: []string{"v2", "v1"},
+		claimer:      claimer,
 		config: &awsConfig{
 			identityURL:        awsIdentityURL,
 			signatureURL:       awsSignatureURL,
+			tokenURL:           awsAPITokenURL,
+			tokenTTL:           awsAPITokenTTL,
 			certificate:        cert,
 			signatureAlgorithm: awsSignatureAlgorithm,
 		},
@@ -452,6 +455,115 @@ func generateAWSWithServer() (*AWS, *httptest.Server, error) {
 		return nil, nil, err
 	}
 
+	sum := sha256.Sum256(doc)
+	signature, err := key.Sign(rand.Reader, sum[:], crypto.SHA256)
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "error signing document")
+	}
+	token := "AQAEAEEO9-7Z88ewKFpboZuDlFYWz9A3AN-wMOVzjEhfAyXW31BvVw=="
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/latest/dynamic/instance-identity/document":
+			// check for API token
+			if r.Header.Get("X-aws-ec2-metadata-token") != token {
+				w.WriteHeader(http.StatusUnauthorized)
+				w.Write([]byte("401 Unauthorized"))
+			}
+			w.Write(doc)
+		case "/latest/dynamic/instance-identity/signature":
+			// check for API token
+			if r.Header.Get("X-aws-ec2-metadata-token") != token {
+				w.WriteHeader(http.StatusUnauthorized)
+				w.Write([]byte("401 Unauthorized"))
+			}
+			w.Write([]byte(base64.StdEncoding.EncodeToString(signature)))
+		case "/latest/api/token":
+			w.Write([]byte(token))
+		case "/bad-document":
+			w.Write([]byte("{}"))
+		case "/bad-signature":
+			w.Write([]byte("YmFkLXNpZ25hdHVyZQo="))
+		case "/bad-json":
+			w.Write([]byte("{"))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	aws.config.identityURL = srv.URL + "/latest/dynamic/instance-identity/document"
+	aws.config.signatureURL = srv.URL + "/latest/dynamic/instance-identity/signature"
+	aws.config.tokenURL = srv.URL + "/latest/api/token"
+	return aws, srv, nil
+}
+
+func generateAWSV1Only() (*AWS, error) {
+	name, err := randutil.Alphanumeric(10)
+	if err != nil {
+		return nil, err
+	}
+	accountID, err := randutil.Alphanumeric(10)
+	if err != nil {
+		return nil, err
+	}
+	claimer, err := NewClaimer(nil, globalProvisionerClaims)
+	if err != nil {
+		return nil, err
+	}
+	block, _ := pem.Decode([]byte(awsTestCertificate))
+	if block == nil || block.Type != "CERTIFICATE" {
+		return nil, errors.New("error decoding AWS certificate")
+	}
+	cert, err := x509.ParseCertificate(block.Bytes)
+	if err != nil {
+		return nil, errors.Wrap(err, "error parsing AWS certificate")
+	}
+	return &AWS{
+		Type:         "AWS",
+		Name:         name,
+		Accounts:     []string{accountID},
+		Claims:       &globalProvisionerClaims,
+		IMDSVersions: []string{"v1"},
+		claimer:      claimer,
+		config: &awsConfig{
+			identityURL:        awsIdentityURL,
+			signatureURL:       awsSignatureURL,
+			tokenURL:           awsAPITokenURL,
+			tokenTTL:           awsAPITokenTTL,
+			certificate:        cert,
+			signatureAlgorithm: awsSignatureAlgorithm,
+		},
+		audiences: testAudiences.WithFragment("aws/" + name),
+	}, nil
+}
+
+func generateAWSWithServerV1Only() (*AWS, *httptest.Server, error) {
+	aws, err := generateAWSV1Only()
+	if err != nil {
+		return nil, nil, err
+	}
+	block, _ := pem.Decode([]byte(awsTestKey))
+	if block == nil || block.Type != "RSA PRIVATE KEY" {
+		return nil, nil, errors.New("error decoding AWS key")
+	}
+	key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "error parsing AWS private key")
+	}
+	doc, err := json.MarshalIndent(awsInstanceIdentityDocument{
+		AccountID:        aws.Accounts[0],
+		Architecture:     "x86_64",
+		AvailabilityZone: "us-west-2b",
+		ImageID:          "image-id",
+		InstanceID:       "instance-id",
+		InstanceType:     "t2.micro",
+		PendingTime:      time.Now(),
+		PrivateIP:        "127.0.0.1",
+		Region:           "us-west-1",
+		Version:          "2017-09-30",
+	}, "", "  ")
+	if err != nil {
+		return nil, nil, err
+	}
+
 	sum := sha256.Sum256(doc)
 	signature, err := key.Sign(rand.Reader, sum[:], crypto.SHA256)
 	if err != nil {
diff --git a/authority/tls.go b/authority/tls.go
index efd02887..30434c97 100644
--- a/authority/tls.go
+++ b/authority/tls.go
@@ -81,7 +81,7 @@ func (a *Authority) Sign(csr *x509.CertificateRequest, signOpts provisioner.Sign
 		case provisioner.CertificateOptions:
 			certOptions = append(certOptions, k.Options(signOpts)...)
 
-		// Validate tie given certificate request.
+		// Validate the given certificate request.
 		case provisioner.CertificateRequestValidator:
 			if err := k.Valid(csr); err != nil {
 				return nil, errs.Wrap(http.StatusUnauthorized, err, "authority.Sign", opts...)
diff --git a/docker/Dockerfile.step-ca b/docker/Dockerfile.step-ca
index f9ba1ab4..5d8fdacd 100644
--- a/docker/Dockerfile.step-ca
+++ b/docker/Dockerfile.step-ca
@@ -1,12 +1,19 @@
+FROM golang:alpine AS builder
+
+RUN mkdir /src
+ADD . /src
+
+RUN apk add --no-cache make git curl && \
+    cd /src && \
+    make V=1 bin/step-ca 
+
 FROM smallstep/step-cli:latest
 
-ARG BINPATH="bin/step-ca"
+COPY --from=builder /src/bin/step-ca /usr/local/bin/step-ca
 
 ENV CONFIGPATH="/home/step/config/ca.json"
 ENV PWDPATH="/home/step/secrets/password"
 
-COPY $BINPATH "/usr/local/bin/step-ca"
-
 USER root
 RUN apk add --no-cache libcap && setcap CAP_NET_BIND_SERVICE=+eip /usr/local/bin/step-ca
 USER step
diff --git a/docs/GETTING_STARTED.md b/docs/GETTING_STARTED.md
index 0e010019..84e968ab 100644
--- a/docs/GETTING_STARTED.md
+++ b/docs/GETTING_STARTED.md
@@ -718,6 +718,11 @@ A few things to consider / implement when running multiple instances of `step-ca
 * Use `MySQL` DB: The default `Badger` DB cannot be read / written by more than one
 process simultaneously. The only supported DB that can support multiple instances
 is `MySQL`. See the [database documentation][4] for guidance on configuring `MySQL`.
+  * The ACME server has known concurrency limitations when using the same account to
+  manage multiple orders. The recommended temporary workaround is to generate
+  an ephemeral account keypair for each new ACME order, or to ensure that ACME
+  orders owned by the same account are managed serially. The issue tracking
+  this limitation can be found [here](https://github.com/smallstep/certificates/issues/341).
 
 * Synchronize `ca.json` across instances: `step-ca` reads all of it's
 configuration (and all of the provisioner configuration) from the `ca.json` file
diff --git a/go.mod b/go.mod
index 086ba27a..440a68b0 100644
--- a/go.mod
+++ b/go.mod
@@ -9,15 +9,17 @@ require (
 	github.com/go-chi/chi v4.0.2+incompatible
 	github.com/go-piv/piv-go v1.5.0
 	github.com/googleapis/gax-go/v2 v2.0.5
+	github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a // indirect
+	github.com/lunixbochs/vtclean v1.0.0 // indirect
 	github.com/newrelic/go-agent v2.15.0+incompatible
 	github.com/pkg/errors v0.9.1
 	github.com/rs/xid v1.2.1
 	github.com/sirupsen/logrus v1.4.2
 	github.com/smallstep/assert v0.0.0-20200723003110-82e2b9b3b262
-	github.com/smallstep/cli v0.14.7-rc.1.0.20200721180458-731b7c4c8c95
+	github.com/smallstep/cli v0.15.0
 	github.com/smallstep/nosql v0.3.0
 	github.com/urfave/cli v1.22.2
-	go.step.sm/crypto v0.1.2-0.20200814221812-7a041a9f5319
+	go.step.sm/crypto v0.2.0
 	golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de
 	golang.org/x/net v0.0.0-20200202094626-16171245cfb2
 	google.golang.org/api v0.15.0
diff --git a/go.sum b/go.sum
index b6858bd4..b64020d6 100644
--- a/go.sum
+++ b/go.sum
@@ -21,20 +21,12 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2oc2f4tzPWic=
 github.com/Masterminds/goutils v1.1.0 h1:zukEsf/1JZwCMgHiK3GZftabmxiCw4apj3a28RPBiVg=
 github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
-github.com/Masterminds/semver v1.4.2 h1:WBLTQ37jOCzSLtXNdoo8bNM8876KhNqOKvrlGITgsTc=
-github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
-github.com/Masterminds/semver/v3 v3.0.1 h1:2kKm5lb7dKVrt5TYUiAavE6oFc1cFT0057UVGT+JqLk=
-github.com/Masterminds/semver/v3 v3.0.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/Masterminds/semver/v3 v3.1.0 h1:Y2lUDsFKVRSYGojLJ1yLxSXdMmMYTYls0rCvoqmMUQk=
 github.com/Masterminds/semver/v3 v3.1.0/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/Masterminds/sprig/v3 v3.0.0 h1:KSQz7Nb08/3VU9E4ns29dDxcczhOD1q7O1UfM4G3t3g=
-github.com/Masterminds/sprig/v3 v3.0.0/go.mod h1:NEUY/Qq8Gdm2xgYA+NwJM6wmfdRV9xkh8h/Rld20R0U=
 github.com/Masterminds/sprig/v3 v3.1.0 h1:j7GpgZ7PdFqNsmncycTHsLmVPf5/3wJtlgW9TNDYD9Y=
 github.com/Masterminds/sprig/v3 v3.1.0/go.mod h1:ONGMf7UfYGAbMXCZmQLy8x3lCDIPrEZE/rU8pmrbihA=
-github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
 github.com/Microsoft/go-winio v0.4.14 h1:+hMXMk01us9KgxGb7ftKQt2Xpf5hH/yky+TDA+qxleU=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
@@ -63,7 +55,6 @@ github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQ
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bombsimon/wsl/v2 v2.0.0 h1:+Vjcn+/T5lSrO8Bjzhk4v14Un/2UyCA1E3V5j9nwTkQ=
 github.com/bombsimon/wsl/v2 v2.0.0/go.mod h1:mf25kr/SqFEPhhcxW1+7pxzGlW+hIl/hYTKY95VwV8U=
-github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
@@ -77,7 +68,6 @@ github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5P
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 h1:q763qf9huN11kDQavWsoZXJNW3xEE4JJyHa5Q25/sd8=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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@@ -93,7 +83,6 @@ github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e h1:Wf6HqHfScWJN9
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@@ -276,14 +265,10 @@ github.com/hashicorp/hcl v0.0.0-20180404174102-ef8a98b0bbce/go.mod h1:oZtUIOe8dh
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@@ -306,7 +291,6 @@ github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a h1:FaWFmfWdAUKbSCtOU
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@@ -389,7 +373,6 @@ github.com/nbutton23/zxcvbn-go v0.0.0-20180912185939-ae427f1e4c1d h1:AREM5mwr4u1
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@@ -478,83 +461,62 @@ github.com/smallstep/assert v0.0.0-20200103212524-b99dc1097b15 h1:kSImCuenAkXtCa
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@@ -562,7 +524,6 @@ github.com/valyala/quicktemplate v1.1.1/go.mod h1:EH+4AkTd43SvgIbQHYu59/cJyxDoOV
 github.com/valyala/quicktemplate v1.2.0/go.mod h1:EH+4AkTd43SvgIbQHYu59/cJyxDoOVRUAfrukLPuGJ4=
 github.com/valyala/tcplisten v0.0.0-20161114210144-ceec8f93295a/go.mod h1:v3UYOV9WzVtRmSR+PDvWpU/qWl4Wa5LApYYX4ZtKbio=
 github.com/weppos/publicsuffix-go v0.4.0/go.mod h1:z3LCPQ38eedDQSwmsSRW4Y7t2L8Ln16JPQ02lHAdn5k=
-github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5Qo6v2eYzo7kUS51QINcR5jNpbZS8=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/zmap/rc2 v0.0.0-20131011165748-24b9757f5521/go.mod h1:3YZ9o3WnatTIZhuOtot4IcUfzoKVjUHqu6WALIyI0nE=
@@ -574,28 +535,25 @@ github.com/zmap/zlint v0.0.0-20190516161541-9047d02cf65a/go.mod h1:xwLbce0UzBXp4
 go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/etcd v3.3.13+incompatible/go.mod h1:yaeTdrJi5lOmYerz05bd8+V7KubZs8YSFZfzsF9A6aI=
-go.etcd.io/etcd v3.3.18+incompatible h1:5aomL5mqoKHxw6NG+oYgsowk8tU8aOalo2IdZxdWHkw=
 go.etcd.io/etcd v3.3.18+incompatible/go.mod h1:yaeTdrJi5lOmYerz05bd8+V7KubZs8YSFZfzsF9A6aI=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2 h1:75k/FF0Q2YM8QYo07VPddOLBslDt1MZOdEslOHvmzAs=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
+go.step.sm/crypto v0.0.0-20200805202904-ec18b6df3cf0 h1:FymMl8TrXGxFf80BWpO0CnkSfLnw0BkDdRrhbMGf5zE=
+go.step.sm/crypto v0.0.0-20200805202904-ec18b6df3cf0/go.mod h1:8VYxmvSKt5yOTBx3MGsD2Gk4F1Es/3FIxrjnfeYWE8U=
 go.step.sm/crypto v0.1.1 h1:xg3kUS30hEnwgbxtKwq9a4MJaeiU616HSug60LU9B2E=
 go.step.sm/crypto v0.1.1/go.mod h1:cIoSWTfTQ5xqvwTeZH9ZXZzi6jdMepjK4A/TDWMUvw8=
-go.step.sm/crypto v0.1.2-0.20200814221812-7a041a9f5319 h1:3y6E6bAbYMRT02hHW/jWJfevUUEx2yYJ2Zelex2sR3E=
-go.step.sm/crypto v0.1.2-0.20200814221812-7a041a9f5319/go.mod h1:YNLnHj4JgABFoRkUq8brkscIB9THdiJUFoDxLQw1tww=
+go.step.sm/crypto v0.2.0 h1:Rx+XqrNO4ZGHWlT9QCXls2L9pvcNiI23zEpAq0fctvY=
+go.step.sm/crypto v0.2.0/go.mod h1:YNLnHj4JgABFoRkUq8brkscIB9THdiJUFoDxLQw1tww=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
-go.uber.org/atomic v1.5.1 h1:rsqfU5vBkVknbhUGbAUwQKR2H4ItV8tjJ+6kJX4cxHM=
 go.uber.org/atomic v1.5.1/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
-go.uber.org/multierr v1.4.0 h1:f3WCSC2KzAcBXGATIxAB1E2XuCpNU255wNKZ505qi3E=
 go.uber.org/multierr v1.4.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
-go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEaUSmT1ysygQC7qYo7sG4=
 go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
-go.uber.org/zap v1.13.0 h1:nR6NoDBgAf67s68NhaXbsojM+2gxp3S1hWkHDl27pVU=
 go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -603,17 +561,13 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20190313024323-a1f597ede03a/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7 h1:0hQKqeLdqlt5iIwVOBErRisrHJAN57yOiPRQItI20fU=
-golang.org/x/crypto v0.0.0-20190911031432-227b76d455e7/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3H3cr1v9wB50oz8l4C4h62xy7jSTY=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20191227163750-53104e6ec876 h1:sKJQZMuxjOAR/Uo2LBfU90onWEf1dF4C+0hPJCc9Mpc=
 golang.org/x/crypto v0.0.0-20191227163750-53104e6ec876/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59 h1:3zb4D3T4G8jdExgVU/95+vQXfpEPiMdCaZgmGVxjNHM=
-golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200414173820-0848c9571904 h1:bXoxMPcSLOq08zI3/c5dEBT6lE4eh+jOh886GHrn6V8=
 golang.org/x/crypto v0.0.0-20200414173820-0848c9571904/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899 h1:DZhuSZLsGlFL4CmhA8BcRA0mnthyA/nZ00AqCUo7vHg=
+golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de h1:ikNHVSjEfnvz6sxdSPCaPt572qowuyMDMJLLm3Db3ig=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -630,7 +584,6 @@ golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f h1:J5lckAjkw6qYlOZNj90mLYNTEKDvWeuc1yieZ8qUzUE=
 golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
@@ -654,11 +607,9 @@ golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191002035440-2ec189313ef0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553 h1:efeOvDhwQ29Dj3SdAV/MJf8oukgn+8D8WgaCaRMchF8=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2 h1:CCH4IOTTfewWjGOlSp+zGcjutRKlBEZQ6wTn8ozI/nI=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -673,7 +624,6 @@ golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20171026204733-164713f0dfce/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -686,7 +636,6 @@ golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -695,7 +644,6 @@ golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191220142924-d4481acd189f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -703,14 +651,12 @@ golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e h1:LwyF2AFISC9nVbS6MgzsaQNSUsRXI49GS+YQ5KX/QH0=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915090833-1cbadb444a80/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20170915040203-e531a2a1c15f/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -750,7 +696,6 @@ golang.org/x/tools v0.0.0-20191113232020-e2727e816f5a/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200106190116-7be0a674c9fc h1:MR2F33ipDGog0C4eMhU6u9o3q6c3dvYis2aG6Jl12Wg=
 golang.org/x/tools v0.0.0-20200106190116-7be0a674c9fc/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -764,7 +709,6 @@ google.golang.org/api v0.15.0 h1:yzlyyDW/J0w8yNFJIhiAJy4kq74S+1DOLdawELNxFMA=
 google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.5.0 h1:KxkO13IPW4Lslp2bz+KHP2E3gtFlrIGNThxkZQ3g+4c=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
@@ -795,13 +739,11 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/cheggaaa/pb.v1 v1.0.28 h1:n1tBJnnK2r7g9OW2btFH91V92STTUevLXYFb8gy9EMk=
 gopkg.in/cheggaaa/pb.v1 v1.0.28/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/ini.v1 v1.51.1 h1:GyboHr4UqMiLUybYjd22ZjQIKEJEpgtLXtuGbR21Oho=
 gopkg.in/ini.v1 v1.51.1/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/square/go-jose.v2 v2.4.0 h1:0kXPskUMGAXXWJlP05ktEMOV0vmzFQUWw6d+aZJQU8A=
@@ -811,7 +753,6 @@ gopkg.in/square/go-jose.v2 v2.5.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -822,21 +763,14 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 howett.net/plist v0.0.0-20181124034731-591f970eefbb/go.mod h1:vMygbs4qMhSZSc4lCUl2OEE+rDiIIJAIdR4m7MiMcm0=
-howett.net/plist v0.0.0-20200419221736-3b63eb3a43b5/go.mod h1:vMygbs4qMhSZSc4lCUl2OEE+rDiIIJAIdR4m7MiMcm0=
-mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed h1:WX1yoOaKQfddO/mLzdV4wptyWgoH/6hwLs7QHTixo0I=
 mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=
-mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b h1:DxJ5nJdkhDlLok9K6qO+5290kphDJbHOQO1DFFFTeBo=
 mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b/go.mod h1:2odslEg/xrtNQqCYg2/jCoyKnw3vv5biOc3JnIcYfL4=
 mvdan.cc/unparam v0.0.0-20190209190245-fbb59629db34/go.mod h1:H6SUd1XjIs+qQCyskXg5OFSrilMRUkD8ePJpHKDPaeY=
 mvdan.cc/unparam v0.0.0-20190720180237-d51796306d8f/go.mod h1:4G1h5nDURzA3bwVMZIVpwbkw+04kSxk3rAtzlimaUJw=
-mvdan.cc/unparam v0.0.0-20191111180625-960b1ec0f2c2 h1:K7wru2CfJGumS5hkiguQ0Rb9ebKM2Jo8s5d4Jm9lFaM=
 mvdan.cc/unparam v0.0.0-20191111180625-960b1ec0f2c2/go.mod h1:rCqoQrfAmpTX/h2APczwM7UymU/uvaOluiVPIYCSY/k=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-sigs.k8s.io/yaml v1.1.0 h1:4A07+ZFc2wgJwo8YNlQpr1rVlgUDlxXHhPJciaPY5gs=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
-sourcegraph.com/sqs/pbtypes v1.0.0 h1:f7lAwqviDEGvON4kRv0o5V7FT/IQK+tbkF664XMbP3o=
 sourcegraph.com/sqs/pbtypes v1.0.0/go.mod h1:3AciMUv4qUuRHRHhOG4TZOB+72GdPVz5k+c648qsFS4=
diff --git a/make/docker.mk b/make/docker.mk
new file mode 100644
index 00000000..1c932d74
--- /dev/null
+++ b/make/docker.mk
@@ -0,0 +1,89 @@
+#########################################
+# Building Docker Image
+#
+# This uses a multi-stage build file. The first stage is a builder (that might
+# be large in size). After the build has succeeded, the statically linked
+# binary is copied to a new image that is optimized for size.
+#########################################
+
+ifeq (, $(shell which docker))
+	DOCKER_CLIENT_OS := linux
+else
+	DOCKER_CLIENT_OS := $(strip $(shell docker version -f '{{.Client.Os}}'))
+endif
+
+DOCKER_PLATFORMS = linux/amd64,linux/386,linux/arm,linux/arm64
+DOCKER_IMAGE_NAME = smallstep/step-ca
+
+docker-prepare:
+	# Ensure, we can build for ARM architecture
+ifeq (linux,$(DOCKER_CLIENT_OS))
+	[ -f /proc/sys/fs/binfmt_misc/qemu-arm ] || docker run --rm --privileged linuxkit/binfmt:v0.8-amd64
+endif
+
+	# Register buildx builder
+	mkdir -p $$HOME/.docker/cli-plugins
+
+	test -f $$HOME/.docker/cli-plugins/docker-buildx || \
+		(wget -q -O $$HOME/.docker/cli-plugins/docker-buildx https://github.com/docker/buildx/releases/download/v0.4.1/buildx-v0.4.1.$(DOCKER_CLIENT_OS)-amd64 && \
+		chmod +x $$HOME/.docker/cli-plugins/docker-buildx)
+
+	docker buildx create --use --name mybuilder --platform="$(DOCKER_PLATFORMS)" || true
+
+.PHONY: docker-prepare
+
+#################################################
+# Releasing Docker Images
+#
+# Using the docker build infrastructure, this section is responsible for
+# logging into docker hub.
+#################################################
+
+# Rely on DOCKER_USERNAME and DOCKER_PASSWORD being set inside the CI or
+# equivalent environment
+docker-login:
+	$Q docker login -u="$(DOCKER_USERNAME)" -p="$(DOCKER_PASSWORD)"
+
+.PHONY: docker-login
+
+#################################################
+# Targets for different type of builds
+#################################################
+
+define DOCKER_BUILDX
+	# $(1) -- Image Tag
+	# $(2) -- Push (empty is no push | --push will push to dockerhub)
+	docker buildx build . --progress plain -t $(DOCKER_IMAGE_NAME):$(1) -f docker/Dockerfile.step-ca --platform="$(DOCKER_PLATFORMS)" $(2)
+endef
+
+# For non-master builds don't build the docker containers.
+docker-branch:
+
+# For master builds don't build the docker containers.
+docker-master:
+
+# For all builds with a release candidate tag build and push the containers.
+docker-release-candidate: docker-prepare docker-login
+	$(call DOCKER_BUILDX,$(VERSION),--push)
+
+# For all builds with a release tag build and push the containers.
+docker-release: docker-prepare docker-login
+	$(call DOCKER_BUILDX,latest,--push)
+	$(call DOCKER_BUILDX,$(VERSION),--push)
+
+.PHONY: docker-branch docker-master docker-release-candidate docker-release
+
+# XXX We put the output for the build in 'output' so we don't mess with how we
+# do rule overriding from the base Makefile (if you name it 'build' it messes up
+# the wildcarding).
+DOCKER_OUTPUT=$(OUTPUT_ROOT)docker/
+
+DOCKER_MAKE=V=$V GOOS_OVERRIDE='GOOS=linux GOARCH=amd64' PREFIX=$(1) make $(1)bin/$(BINNAME)
+DOCKER_BUILD=$Q docker build -t $(DOCKER_IMAGE_NAME):latest -f docker/Dockerfile.step-ca --build-arg BINPATH=$(DOCKER_OUTPUT)bin/$(BINNAME) .
+
+docker-dev: docker/Dockerfile.step-ca
+	mkdir -p $(DOCKER_OUTPUT)
+	$(call DOCKER_MAKE,$(DOCKER_OUTPUT),step-ca)
+	$(call DOCKER_BUILD)
+
+.PHONY: docker-dev
diff --git a/pki/pki.go b/pki/pki.go
index e6df2c69..f58cfb38 100644
--- a/pki/pki.go
+++ b/pki/pki.go
@@ -502,9 +502,19 @@ func (p *PKI) GenerateConfig(opt ...Option) (*authority.Config, error) {
 			HostKey: p.sshHostKey,
 			UserKey: p.sshUserKey,
 		}
+		// Enable SSH authorization for default JWK provisioner
 		prov.Claims = &provisioner.Claims{
 			EnableSSHCA: &enableSSHCA,
 		}
+		// Add default SSHPOP provisioner
+		sshpop := &provisioner.SSHPOP{
+			Type: "SSHPOP",
+			Name: "sshpop",
+			Claims: &provisioner.Claims{
+				EnableSSHCA: &enableSSHCA,
+			},
+		}
+		config.AuthorityConfig.Provisioners = append(config.AuthorityConfig.Provisioners, sshpop)
 	}
 
 	// Apply configuration modifiers