init commit
diff --git a/digest_auth_client.go b/digest_auth_client.go
new file mode 100644
index 0000000..474b3e4
--- /dev/null
+++ b/digest_auth_client.go
@@ -0,0 +1,63 @@
+package digest_auth_client
+
+import (
+ "crypto/md5"
+ "crypto/sha256"
+ "fmt"
+ "hash"
+ "io"
+ "strings"
+)
+
+type AuthorizationHeader struct {
+ Algorithm string // unquoted
+ Body string // request value
+ Cnonce string // quoted
+ Method string // request value
+ Nc string // unquoted
+ Opaque string // quoted
+ Qop string // unquoted
+ Realm string // quoted
+ Resposne string // quoted
+ Uri string // quoted
+ Userhash string // quoted
+ Username string // quoted
+ Username_ string // quoted
+}
+
+func (ah *AuthorizationHeader) ComputeResponse() AuthorizationHeader {
+ return *ah
+}
+
+func (ah *AuthorizationHeader) ComputeA1() AuthorizationHeader {
+ return *ah
+}
+
+func (ah *AuthorizationHeader) ComputeA2() (s string) {
+
+ if strings.Compare(ah.Qop, "auth") == 0 || strings.Compare(ah.Qop, "") == 0 {
+ s = fmt.Sprintf("%s:%s", ah.Method, ah.Uri)
+ }
+
+ if strings.Compare(ah.Qop, "auth-int") == 0 {
+ s = fmt.Sprintf("%s:%s", s, ah.Hash(ah.Body))
+ }
+
+ return
+}
+
+func (ah *AuthorizationHeader) Hash(a string) (s string) {
+
+ var h hash.Hash
+
+ if strings.Compare(ah.Algorithm, "MD5") == 0 {
+ h = md5.New()
+ } else if strings.Compare(ah.Algorithm, "SHA-256") == 0 {
+ h = sha256.New()
+ }
+
+ io.WriteString(h, a)
+ s = string(h.Sum(nil))
+
+ return
+}
