- SHA1_Init(&sha1Context);
- SHA1_Update(&sha1Context, MasterKey, 16);
- SHA1_Update(&sha1Context, SHApad1, sizeof(SHApad1));
- SHA1_Update(&sha1Context, s, 84);
- SHA1_Update(&sha1Context, SHApad2, sizeof(SHApad2));
- SHA1_Final(RecvKey, &sha1Context);
-
- mppe_set_keys(SendKey, RecvKey, SHA1_SIGNATURE_SIZE);
+
+ ctx = PPP_MD_CTX_new();
+ if (ctx != NULL) {
+
+ if (PPP_DigestInit(ctx, PPP_sha1())) {
+
+ if (PPP_DigestUpdate(ctx, MasterKey, 16)) {
+
+ if (PPP_DigestUpdate(ctx, SHApad1, sizeof(SHApad1))) {
+
+ if (PPP_DigestUpdate(ctx, s, 84)) {
+
+ if (PPP_DigestUpdate(ctx, SHApad2, sizeof(SHApad2))) {
+
+ KeyLen = SHA_DIGEST_LENGTH;
+ PPP_DigestFinal(ctx, RecvKey, &KeyLen);
+ }
+ }
+ }
+ }
+ }
+
+ PPP_MD_CTX_free(ctx);
+ }
+
+ mppe_set_keys(SendKey, RecvKey, SHA_DIGEST_LENGTH);