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Verify key authorization is contained within the TPM quote extraData field

Browse Source
pull/1010/head
Brandon Weeks 2 years ago
parent e1ec31c0ed
commit 77c6d10fd6
3 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File

18
acme/challenge.go
Unescape Escape View File

@ -1,6 +1,7 @@
package acme
import (
"bytes"
"context"
"crypto"
"crypto/sha256"
@ -25,6 +26,7 @@ import (
"github.com/google/go-attestation/attest"
"github.com/google/go-attestation/oid"
x509ext "github.com/google/go-attestation/x509"
"github.com/google/go-tpm/tpm2"
"go.step.sm/crypto/jose"
)
@ -359,6 +361,22 @@ func deviceAttest01Validate(ctx context.Context, ch *Challenge, db DB, jwk *jose
"params.Verify failed: %v", err))
}
attData, err := tpm2.DecodeAttestationData(params.CreateAttestation)
if err != nil {
return WrapErrorISE(err, "error decoding attestation data")
}
keyAuth, err := KeyAuthorization(ch.Token, jwk)
if err != nil {
return err
}
hashedKeyAuth := sha256.Sum256([]byte(keyAuth))
if !bytes.Equal(attData.ExtraData, hashedKeyAuth[:]) {
return storeError(ctx, db, ch, true, NewError(ErrorRejectedIdentifierType,
"key authorization mismatch"))
}
var sanExt pkix.Extension
for _, ext := range akCert.Extensions {
if ext.Id.Equal(oid.SubjectAltName) {

1
go.mod
Unescape Escape View File

@ -22,6 +22,7 @@ require (
github.com/golang/mock v1.6.0
github.com/google/go-attestation v0.4.4-0.20220404204839-8820d49b18d9
github.com/google/go-cmp v0.5.8
github.com/google/go-tpm v0.3.3
github.com/google/uuid v1.3.0
github.com/googleapis/gax-go/v2 v2.1.1
github.com/hashicorp/vault/api v1.3.1

12
go.sum
Unescape Escape View File

@ -139,6 +139,7 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/ThalesIgnite/crypto11 v1.2.4 h1:3MebRK/U0mA2SmSthXAIZAdUA9w8+ZuKem2O6HuR1f8=
github.com/ThalesIgnite/crypto11 v1.2.4 h1:3MebRK/U0mA2SmSthXAIZAdUA9w8+ZuKem2O6HuR1f8=
github.com/ThalesIgnite/crypto11 v1.2.4/go.mod h1:ILDKtnCKiQ7zRoNxcp36Y1ZR8LBPmR2E23+wTQe/MlE=
@ -193,10 +194,17 @@ github.com/aws/aws-sdk-go v1.19.18/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpi
github.com/aws/aws-sdk-go v1.19.45/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.20.6/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.23.20/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.23.20/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.25.11/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.25.11/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.27.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.27.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
github.com/aws/aws-sdk-go v1.37.0 h1:GzFnhOIsrGyQ69s7VgqtrG2BG8v7X7vwB3Xpbd/DBBk=
github.com/aws/aws-sdk-go v1.37.0 h1:GzFnhOIsrGyQ69s7VgqtrG2BG8v7X7vwB3Xpbd/DBBk=
github.com/aws/aws-sdk-go v1.37.0 h1:GzFnhOIsrGyQ69s7VgqtrG2BG8v7X7vwB3Xpbd/DBBk=
github.com/aws/aws-sdk-go v1.37.0/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
github.com/aws/aws-sdk-go v1.37.0/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
github.com/aws/aws-sdk-go v1.37.0/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
github.com/aws/aws-sdk-go-v2 v0.18.0/go.mod h1:JWVYvqSMppoMJC0x5wdwiImzgXTI9FuZwxzkQq9wy+g=
github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59/go.mod h1:q/89r3U2H7sSsE2t6Kca0lfwTK8JdoNGS/yzM/4iH5I=
github.com/benbjohnson/clock v1.0.3/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
@ -319,6 +327,7 @@ github.com/envoyproxy/protoc-gen-validate v0.3.0-java/go.mod h1:iSmxcyjqTsJpI2R4
github.com/etcd-io/gofail v0.0.0-20190801230047-ad7f989257ca/go.mod h1:49H/RkXP8pKaZy4h0d+NW16rSLhyVBt4o6VLJbmOqDE=
github.com/evanphx/json-patch/v5 v5.5.0/go.mod h1:G79N1coSVB93tBe7j6PhzjmR3/2VvlbKOFpnXhI9Bw4=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
@ -550,6 +559,7 @@ github.com/hashicorp/go-cleanhttp v0.5.1/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtng
github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9neXJWAZQ=
github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
github.com/hashicorp/go-hclog v0.9.2/go.mod h1:5CU+agLiy3J7N7QjHK5d05KxGsuXiQLrjA0H7acj2lQ=
github.com/hashicorp/go-hclog v0.14.1/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
github.com/hashicorp/go-hclog v0.16.2 h1:K4ev2ib4LdQETX5cSZBG0DVLk1jwGqSPXBjdah3veNs=
github.com/hashicorp/go-hclog v0.16.2/go.mod h1:whpDNt7SSdeAju8AWKIWsul05p54N/39EeqMAyrmvFQ=
@ -680,6 +690,7 @@ github.com/jackc/puddle v1.2.0/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dv
github.com/jarcoal/httpmock v1.0.5/go.mod h1:ATjnClrvW/3tijVmpL/va5Z3aAyGvqU3gCT8nX0Txik=
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/jhump/protoreflect v1.6.0/go.mod h1:eaTn3RZAmMBcV0fifFvlm6VHNz3wSkYyXYWUh7ymB74=
github.com/jhump/protoreflect v1.6.1/go.mod h1:RZQ/lnuN+zqeRVpQigTwO6o0AJUkxbnSnpuG7toUTG4=
github.com/jhump/protoreflect v1.8.2/go.mod h1:7GcYQDdMU/O/BBrl/cX6PNHpXh6cenjd8pneu5yW7Tg=
@ -854,6 +865,7 @@ github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT9
github.com/otiai10/mint v1.3.1/go.mod h1:/yxELlJQ0ufhjUwhshSj+wFjZ78CnZ48/1wtmBH1OTc=
github.com/pact-foundation/pact-go v1.0.4/go.mod h1:uExwJY4kCzNPcHRj+hCR/HBbOOIwwtUjcrb0b5/5kLM=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pascaldekloe/goe v0.1.0 h1:cBOtyMzM9HTpWjXfbbunk26uA6nG3a8n06Wieeh0MwY=
github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=

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