filling out base functionality

cryptomap/crypto.go

@@ -0,0 +1,37 @@
+package cryptomap
+
+import (
+	"crypto"
+	_ "crypto/md5"
+	_ "crypto/sha1"
+	_ "crypto/sha256"
+	_ "crypto/sha512"
+	"log"
+	"strings"
+)
+
+var knownCiphers = map[string]crypto.Hash{
+	"md5": crypto.MD5,
+}
+
+func DetermineHash(str string) (h crypto.Hash) {
+	switch strings.ToLower(str) {
+	case "md5":
+		h = crypto.MD5
+	case "sha1":
+		h = crypto.SHA1
+	case "sha224":
+		h = crypto.SHA224
+	case "sha256":
+		h = crypto.SHA256
+	case "sha384":
+		h = crypto.SHA384
+	case "sha512":
+		h = crypto.SHA512
+	default:
+		log.Println("WARNING: unknown cipher %q. using 'sha1'", str)
+		h = crypto.SHA1
+	}
+
+	return h
+}