1 files changed, 0 insertions, 122 deletions
diff --git a/vendor/code.superseriousbusiness.org/httpsig/digest.go b/vendor/code.superseriousbusiness.org/httpsig/digest.go
deleted file mode 100644
index 140b10ac5..000000000
--- a/vendor/code.superseriousbusiness.org/httpsig/digest.go
+++ /dev/null
@@ -1,122 +0,0 @@
-package httpsig
-
-import (
-	"bytes"
-	"crypto"
-	"encoding/base64"
-	"fmt"
-	"hash"
-	"net/http"
-	"strings"
-)
-
-type DigestAlgorithm string
-
-const (
-	DigestSha256 DigestAlgorithm = "SHA-256"
-	DigestSha512 DigestAlgorithm = "SHA-512"
-)
-
-// hashForDigest returns a hash algorithm for digest algorithm string.
-func hashForDigest(algo DigestAlgorithm) crypto.Hash {
-	switch algo {
-	case DigestSha256:
-		return crypto.SHA256
-	case DigestSha512:
-		return crypto.SHA512
-	default:
-		return 0
-	}
-}
-
-// IsSupportedDigestAlgorithm returns true if hte string is supported by this
-// library, is not a hash known to be weak, and is supported by the hardware.
-func IsSupportedDigestAlgorithm(algo string) bool {
-	uc := DigestAlgorithm(strings.ToUpper(algo))
-	return hashForDigest(uc).Available()
-}
-
-func getHash(algo DigestAlgorithm) (h hash.Hash, toUse DigestAlgorithm, err error) {
-	uc := DigestAlgorithm(strings.ToUpper(string(algo)))
-	c := hashForDigest(uc)
-	if c == 0 {
-		err = fmt.Errorf("unknown or unsupported Digest algorithm: %s", algo)
-	} else if !c.Available() {
-		err = fmt.Errorf("unavailable Digest algorithm: %s", algo)
-	} else {
-		h = c.New()
-		toUse = uc
-	}
-	return
-}
-
-const (
-	digestHeader = "Digest"
-	digestDelim  = "="
-)
-
-func addDigest(r *http.Request, algo DigestAlgorithm, b []byte) (err error) {
-	_, ok := r.Header[digestHeader]
-	if ok {
-		err = fmt.Errorf("cannot add Digest: Digest is already set")
-		return
-	}
-	var h hash.Hash
-	h, algo, err = getHash(algo)
-	if err != nil {
-		return
-	}
-	h.Write(b)
-	sum := h.Sum(nil)
-	r.Header.Add(digestHeader,
-		string(algo)+
-			digestDelim+
-			base64.StdEncoding.EncodeToString(sum[:]))
-	return
-}
-
-func addDigestResponse(r http.ResponseWriter, algo DigestAlgorithm, b []byte) (err error) {
-	_, ok := r.Header()[digestHeader]
-	if ok {
-		err = fmt.Errorf("cannot add Digest: Digest is already set")
-		return
-	}
-	var h hash.Hash
-	h, algo, err = getHash(algo)
-	if err != nil {
-		return
-	}
-	h.Write(b)
-	sum := h.Sum(nil)
-	r.Header().Add(digestHeader,
-		string(algo)+
-			digestDelim+
-			base64.StdEncoding.EncodeToString(sum[:]))
-	return
-}
-
-func verifyDigest(r *http.Request, body *bytes.Buffer) (err error) {
-	d := r.Header.Get(digestHeader)
-	if len(d) == 0 {
-		err = fmt.Errorf("cannot verify Digest: request has no Digest header")
-		return
-	}
-	elem := strings.SplitN(d, digestDelim, 2)
-	if len(elem) != 2 {
-		err = fmt.Errorf("cannot verify Digest: malformed Digest: %s", d)
-		return
-	}
-	var h hash.Hash
-	h, _, err = getHash(DigestAlgorithm(elem[0]))
-	if err != nil {
-		return
-	}
-	h.Write(body.Bytes())
-	sum := h.Sum(nil)
-	encSum := base64.StdEncoding.EncodeToString(sum[:])
-	if encSum != elem[1] {
-		err = fmt.Errorf("cannot verify Digest: header Digest does not match the digest of the request body")
-		return
-	}
-	return
-}