#ifndef PPP_CRYPTO_H
#define PPP_CRYPTO_H
-
-#ifndef SHA1_SIGNATURE_SIZE
-#ifdef SHA_DIGESTSIZE
-#define SHA1_SIGNATURE_SIZE SHA_DIGESTSIZE
-#else
-#define SHA1_SIGNATURE_SIZE 20
+#ifndef MD5_DIGEST_LENGTH
+#define MD5_DIGEST_LENGTH 16
#endif
+
+#ifndef MD4_DIGEST_LENGTH
+#define MD4_DIGEST_LENGTH 16
#endif
+#ifndef SHA_DIGEST_LENGTH
+#define SHA_DIGEST_LENGTH 20
+#endif
struct _PPP_MD_CTX;
struct _PPP_MD;